2006 VV2 Planning


Background


2006 VV2 was discovered by LINEAR (MIT) on November 11, 2006.  It will approach within 0.023 AU 
(8.8 lunar distances) on March 31 when it will be a very strong radar imaging target.  Its 
physical properties are unknown, but its absolute magnitude of 16.7 suggests a diameter within 
a factor of two of 1.5 km.  If past experience is a guide, then there is a ~1/6 chance that it is a
binary system.

This is the closest approach predicted for an object this intrinsically bright until May 2036, 
when (66391) 1999 KW4 will approach within 6.0 lunar distances.

Goldstone observations are scheduled on March 27, 30, and April 1-3.  
Arecibo observations are scheduled on March 31 and April 1.

We intend to devote some time to testing the chirp/digital receiver system on March 30 and April 1.

We will also observe bistatically on March 30 and April 1, transmitting with DSS-14 and receiving
echoes with the Very Long Baseline Array (VLBA) during part of the tracks.  We will monitor the
observations by receiving at DSS-13 on those days.

2006 VV2 will be an optically bright object: it may reach 10th magnitude at closest approach
and should be visible in small telescopes.  Consequently, it's an excellent target for photometry,
spectroscopy, and infrared radiometry.

Due to the proximity of its orbit to Earth and its diameter, 2006 VV2 has been classified as a 
"Potentially Hazardous Asteroid" by the Minor Planet Center.

Orbital and Physical Characteristics
 orbit type              Apollo
 semimajor axis           2.388 AU     
 eccentricity             0.602        
 inclination             23.6°       
 perihelion distance      0.949 AU     
 aphelion distance        3.826 AU     
 absolute magnitude (H)  16.7
 diameter                 1.5 km +- a factor of two
 rotation period          2.43 h
 pole direction           unknown
 lightcurve amplitude     unknown
 spectral class           unknown

Last updated: 2007 April 04

Discovery



M.P.E.C. 2006-V47                                Issued 2006 Nov. 13, 17:06 UT

     The Minor Planet Electronic Circulars contain information on unusual
         minor planets and routine data on comets.  They are published
   on behalf of Commission 20 of the International Astronomical Union by the
          Minor Planet Center, Smithsonian Astrophysical Observatory,
                          Cambridge, MA 02138, U.S.A.

             Prepared using the Tamkin Foundation Computer Network

                              MPC@CFA.HARVARD.EDU
          URL http://cfa-www.harvard.edu/iau/mpc.html  ISSN 1523-6714

                                   2006 VV2

Observations:
     K06V02V* C2006 11 11.25116 03 05 40.81 +57 03 58.5          18.4   EV047704
     K06V02V  C2006 11 11.26344 03 05 38.28 +57 04 17.1          18.7   EV047704
     K06V02V  C2006 11 11.27606 03 05 35.77 +57 04 35.9          18.7   EV047704
     K06V02V  C2006 11 11.28834 03 05 33.27 +57 04 55.1          18.4   EV047704
     K06V02V  C2006 11 11.30066 03 05 30.55 +57 05 12.3          18.6   EV047704
     K06V02V  C2006 11 11.95517 03 03 20.60 +57 21 42.1          18.1 R EV047204
     K06V02V  C2006 11 11.95875 03 03 19.87 +57 21 47.4                 EV047204
     K06V02V  C2006 11 11.96221 03 03 19.15 +57 21 52.7                 EV047204
     K06V02V  C2006 11 11.98646 03 03 14.17 +57 22 30.6          17.9   EV047176
     K06V02V  C2006 11 11.98731 03 03 14.01 +57 22 31.8          17.7   EV047176
     K06V02V  C2006 11 11.99536 03 03 12.33 +57 22 43.6          17.6   EV047176
     K06V02V  C2006 11 11.99623 03 03 12.13 +57 22 44.8          17.4   EV047176
     K06V02V  C2006 11 11.99708 03 03 12.00 +57 22 46.2          17.5   EV047176
     K06V02V  C2006 11 12.00605 03 03 10.16 +57 22 59.7          18.7 V EV047939
     K06V02V  C2006 11 12.01992 03 03 07.32 +57 23 20.8          18.7 V EV047939
     K06V02V  C2006 11 12.22943 03 02 25.17 +57 28 34.1          18.0 R EV047H36
     K06V02V  C2006 11 12.23491 03 02 23.71 +57 28 44.0          18.0 R EV047H36
     K06V02V  C2006 11 12.25345 03 02 20.20 +57 29 12.3          17.2 V EV047703
     K06V02V  C2006 11 12.26478 03 02 17.80 +57 29 29.6          17.3 V EV047703
     K06V02V  C2006 11 12.27674 03 02 15.27 +57 29 46.7          19.2 R EV047854
     K06V02V  C2006 11 12.27770 03 02 15.03 +57 29 49.0          19.3 R EV047854
     K06V02V  C2006 11 12.27961 03 02 14.66 +57 29 51.3          19.2 R EV047854
     K06V02V  C2006 11 12.56803 03 01 15.60 +57 37 03.0          18.8 V EV047D35
     K06V02V  C2006 11 12.56956 03 01 15.28 +57 37 05.2          18.7 V EV047D35
     K06V02V  C2006 11 12.57112 03 01 14.94 +57 37 07.6          18.6 V EV047D35
     K06V02V  C2006 11 12.79522 03 00 28.60 +57 42 32.6          18.5   EV047130
     K06V02V  C2006 11 12.79647 03 00 28.34 +57 42 34.9          18.8   EV047130
     K06V02V  C2006 11 12.79822 03 00 27.86 +57 42 37.2          19.1   EV047130
     K06V02V  C2006 11 13.16845 02 59 09.58 +57 51 47.8          17.4 R EV047850
     K06V02V  C2006 11 13.17891 02 59 07.18 +57 52 03.2          18.0 R EV047850
     K06V02V  C2006 11 13.18829 02 59 05.00 +57 52 17.4          18.1 R EV047850
     K06V02V 5C2006 11 13.21487302 58 59.863+57 52 54.81         18.0 R EV047673
     K06V02V 5C2006 11 13.22112302 58 58.493+57 53 04.04                EV047673
     K06V02V 5C2006 11 13.23015002 58 56.509+57 53 17.52                EV047673
     K06V02V 5C2006 11 13.23431702 58 55.602+57 53 23.77                EV047673

Observer details:
130 Lumezzane.  Observers M. Casali, W. Marinello, M. Micheli, G. Pizzetti,
    A. Soffiantini.  Measurers W. Marinello, M. Micheli.  0.40-m f/4.5
    reflector + CCD.
176 Observatori Astronomic de Consell.  Observers A. Lopez, R. Pacheco.
    0.41-m f/4 reflector + CCD.
204 Schiaparelli Observatory.  Observers L. Buzzi, F. Luppi.  Measurer
    L. Buzzi.  0.60-m f/4.64 reflector + CCD.
673 Table Mountain Observatory, Wrightwood.  Observer J. Young.  0.61-m f/16
    Cassegrain + CCD.
703 Catalina Sky Survey.  Observer A. R. Gibbs.  Measurers E. C. Beshore,
    E. J. Christensen, G. J. Garradd, A. R. Gibbs, A. D. Grauer, R. E. Hill,
    R. A. Kowalski, S. M. Larson, R. H. McNaught.  0.68-m Schmidt + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Bezpalko, L. Manguso,
    D. Torres, R. Kracke, H. Love, G. Spitz, J. Kistler.  Measurers J. Stuart,
    J. Kommers.  1.0-m f/2.15 reflector + CCD.
850 Cordell-Lorenz Observatory, Sewanee.  Observers D. T. Durig, J. G. Vicars.
    0.30-m f/9.7 Schmidt-Cassegrain + 1Kx1K CCD.
854 Sabino Canyon Observatory, Tucson.  Observer J. E. McGaha.  0.36-m f/10.0
    Schmidt-Cassegrain + CCD.
939 Observatorio Rodeno.  Observer J. Castellano.  0.20-m f/3.3
    Schmidt-Cassegrain + CCD.
D35 Lulin Observatory.  Observers H.-C. Lin, C.-S. Lin, Q.-z. Ye.  Measurer
    Q.-z. Ye.  0.41-m f/8.8 Ritchey-Chretien + 2Kx2K CCD.
H36 Sandlot Observatory, Scranton.  Observer G. Hug.  0.30-m
    Schmidt-Cassegrain + CCD.

Orbital elements:
2006 VV2                                            PHA, Earth MOID = 0.0054 AU
Epoch 2006 Sept. 22.0 TT = JDT 2454000.5                MPC
M 321.07228              (2000.0)            P               Q
n   0.24039417     Peri.  145.51626     -0.90145443     -0.42718131
a   2.5616518      Node     9.96445     +0.24599020     -0.63854214
e   0.6384366      Incl.   23.85190     +0.35618636     -0.64014066
P   4.10           H   16.4           G   0.15           U   9
Residuals in seconds of arc
061111 704  0.1+  0.6+    061111 176  0.5+  0.2-    061112 D35  1.1-  0.9+
061111 704  0.2-  0.4+    061112 939  0.3+  0.2-    061112 130  0.2-  0.5-
061111 704  0.2+  0.1-    061112 939  0.8+  0.1+    061112 130  0.1-  0.1-
061111 704  0.2+  0.4+    061112 H36  1.7+  1.1-    061112 130  1.0-  0.4-
061111 704  1.6-  1.1-    061112 H36  0.8-  0.6+    061113 850  1.1+  0.1+
061111 204  0.2+  0.2-    061112 703  0.1+  0.2+    061113 850  0.3+  0.0
061111 204  0.3+  0.3-    061112 703  0.1+  0.4+    061113 850  0.7-  0.4+
061111 204  0.3+  0.2-    061112 854  0.1+  0.5-    061113 673  0.2+  0.2-
061111 176  0.1+  0.1+    061112 854  0.2-  0.4+    061113 673  0.2+  0.3-
061111 176  0.3+  0.0     061112 854  0.1+  0.2-    061113 673  0.1+  0.3-
061111 176  0.3+  0.3-    061112 D35  1.1-  1.0+    061113 673  0.2+  0.2-
061111 176  0.1+  0.4-    061112 D35  1.0-  0.9+

Ephemeris:
2006 VV2                 a,e,i = 2.56, 0.64, 24                  q = 0.9262
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
.
.
2007 01 30    22 55.11   +59 27.1    0.478    1.029    81.5    71.1    17.4
2007 02 09    22 47.18   +59 55.9    0.416    0.977    76.5    79.0    17.2
2007 02 19    22 35.66   +60 25.0    0.342    0.942    72.2    87.6    17.0
2007 03 01    22 16.01   +60 07.2    0.257    0.927    68.2    96.9    16.8
2007 03 11    21 41.39   +56 56.4    0.166    0.933    64.3   106.4    16.3
2007 03 21    20 35.91   +40 20.4    0.0776   0.961    61.3   114.6    15.2
2007 03 31    18 10.51   -45 58.3    0.0563   1.007    97.2    79.6    12.9
2007 04 10    14 49.16   -70 21.6    0.138    1.068   115.5    57.8    14.3
2007 04 20    13 12.16   -70 10.6    0.231    1.140   120.8    49.2    15.3
2007 04 30    12 39.53   -67 51.0    0.327    1.220   123.9    43.2    16.1
2007 05 10    12 32.40   -65 17.2    0.425    1.304   125.8    38.9    16.7
2007 05 20    12 37.44   -62 44.9    0.527    1.392   126.6    35.7    17.2
2007 05 30    12 49.26   -60 21.4    0.635    1.480   126.2    33.5    17.7
2007 06 09    13 04.93   -58 10.1    0.751    1.569   124.8    32.1    18.1
2007 06 19    13 22.93   -56 12.1    0.875    1.658   122.4    31.2    18.5
2007 06 29    13 42.40   -54 28.6    1.007    1.746   119.2    30.5    18.9
.
.
Kyle E. Smalley              (C) Copyright 2006 MPC           M.P.E.C. 2006-V47

SNR Calculation

Target Name:    2006 VV2
HMag:           16.7
Diameter:       1.5 km  (an educated guess assuming H = 16.7 and an S-class optical albedo)
Period:         2.43 h  (Jozef Vilagi, Leos Kornos, and Stefan Gajdos at Modra Observatory in Slovakia)
                           ------------GOLDSTONE----------  -------------ARECIBO-----------
                                            Max                              Max
                                    Date    Run    UTC               Date    Run    UTC
    Date   RA  Decl Delta  Runs     SNR     SNR   Window    Runs     SNR     SNR   Window
2007  3 22 359  77  0.093   425      86       5  0:00-24:00    0       0       0      -
2007  3 23   1  78  0.083   468     130       7  0:00-24:00    0       0       0      -
2007  3 24   6  80  0.074   520     210      10  0:00-24:00    0       0       0      -
2007  3 25  14  82  0.065   584     350      16  0:00-24:00    0       0       0      -
2007  3 26  37  85  0.056   665     630      26  0:00-24:00    0       0       0      -
2007  3 27  94  85  0.047   700    1200      47  0:00-24:00    0       0       0      -
2007  3 28 133  80  0.039   700    2300      94  0:00-24:00    0       0       0      -
2007  3 29 147  70  0.032   700    4800     200 20:06-38:23    0       0       0      -
2007  3 30 154  55  0.026   700   10100     420 22:30-36:36    0       0       0      -
2007  3 31 157  33  0.023   700   15600     640 23:53-35:30  125  195000   19000  1:30- 3:23
2007  4  1 159   9  0.024   568   11800     550  1:11-10:35  137  187000   17000  1:23- 3:42
2007  4  2 161 -10  0.028   404    5100     280  2:12- 9:35    0       0       0      -
2007  4  3 162 -23  0.035   268    1700     120  3:17- 8:30    0       0       0      -
2007  4  4 163 -31  0.043   166     580      49  4:30- 7:17    0       0       0      -
2007  4  5 163 -37  0.052    81     190      22      -         0       0       0      -
2007  4  6 164 -41  0.061     0       0       0      -         0       0       0      -

Track Assignments


2006 VV2 Goldstone Schedule
P = 2.43 h

      UT        UT       PDT                 AST                    Duration  Round-trip
DOY  Date    TX Window   TX Window           TX Window              hh:mm     time (sec) Rotations       
---  ----    ---------   ---------           ---------              -------   ---------  ---------
086  Mar 27  1020-1430   0320-0730 Mar 27    0620-1030 Mar 27        4:10      43         1.71
089  Mar 30  0245-0645   1945-2345 Mar 29    2245-0245 Mar 28-29     4:00      25         1.65
091  Apr 01  0110-0635   1810-2335 Mar 31    2110-0235 Mar 31-Apr 1  5:25      24         2.23
092  Apr 02  0345-0745   2045-0045 Apr 1-2   2345-0345 Apr 1-2       4:00      30         1.65
093  Apr 03  0355-0700   2055-0000 Apr 2-3   2355-0300 Apr 2-3       3:05      37         1.27
Round-trip times are given during actual tracks, not at 00:00 UTC as in the SNR estimates above.

Arecibo Schedule
090  Mar 31  0119-0338  1819-2038 Mar 30     2119-2338 Mar 30        2:19      23         0.95
091  Apr 01  0123-0330  1823-2030 Mar 31     2123-2330 Mar 31        2:07      24         0.87

Goldstone-VLBA and Arecibo-VLBA Schedules (includes the GBT)
089  Mar 30  0300-0400  Goldstone transmit
091  Apr 01  0100-0300  Arecibo   transmit (note that VV2 does not rise at Arecibo until 0123)
091  Apr 01  0430-0530  Goldstone transmit  <-- NOTE THE CHANGE! We moved it one hour later to improve rotation coverage.

The April 1 Arecibo track entirely overlaps the Goldstone track on that day.
The March 31 Arecibo observations are monostatic only.


Uncertainties


From Jon Giorgini, 2006 December 21:

With 171 optical obs (2002-Oct-4 to 2006-Dec-17), 2006 VV2 solution
#18 was computed. Nominal 3-sigma X-band uncertainties are as shown
below:

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2007-Mar-29 00:00    85.8600319     24.19      0.024508
 2007-Mar-30 00:00    95.4908052     31.78      0.025385
 2007-Mar-31 00:00   139.230914      39.55      0.023742
 2007-Apr-01 00:00   187.886773      42.31      0.018523
 2007-Apr-02 00:00   187.065898      39.91      0.012755
 2007-Apr-03 00:00   161.435073      36.29      0.008990
 2007-Apr-04 00:00   135.215408      33.26      0.007271

- - - - - - - - - - - - - - - - - - - -

From Horizons, 2007 February 05.  Solution #28, # obs: 245 (2002-2007)

 Date__(UT)__HR:MN   R.A._(J2000.0)_DEC.            delta POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2007-Mar-27 00:00    93.54698  85.25469 .047205871586183 23.8068886       1.93       6.91      0.011003
 2007-Mar-28 00:00   133.84527  80.18004 .038928245515984 27.8733246       2.00       7.14      0.011112
 2007-Mar-29 00:00   147.63703  70.32648 .031497770406630 35.2556753       2.23       7.98      0.011071
 2007-Mar-30 00:00   153.77302  54.67885 .025676609526550 52.1586790       2.81      10.06      0.010481
 2007-Mar-31 00:00   157.17646  32.52728 .022751298605389 79.9565030       3.69      13.18      0.008648
 2007-Apr-01 00:00   159.33582   8.47516 .023825947043785 94.3257608       4.31      15.42      0.005870
 2007-Apr-02 00:00   160.83273 -10.55423 .028458984699659 84.6390931       4.43      15.84      0.004158
 2007-Apr-03 00:00   161.93820 -23.26758 .035280626418561 68.4689270       4.32      15.44      0.004115
 2007-Apr-04 00:00   162.79482 -31.57645 .043271671543646 55.0236659       4.17      14.93      0.004610

- - - - - - - - - - - - - - - - - - - -

From Horizons, 2007 March 14.  Solution #32, #obs: 262 (2002-2007)

 2007-Mar-27 00:00    93.55705  85.25645 .047202315417871  9.07559386      1.36       4.88      0.005372
 2007-Mar-28 00:00   133.85937  80.18053 .038924735850508 13.5750656       1.29       4.60      0.005103
 2007-Mar-29 00:00   147.64676  70.32535 .031494404177118 21.5601198       1.13       4.04      0.004606
 2007-Mar-30 00:00   153.78014  54.67523 .025673645445635 34.3785572       0.86       3.08      0.003632
 2007-Mar-31 00:00   157.18203  32.52063 .022749237836956 47.0631821       0.67       2.38      0.002004
 2007-Apr-01 00:00   159.34038   8.46740 .023825175324833 46.5566283       0.96       3.43      0.001212
 2007-Apr-02 00:00   160.83659 -10.56083 .028459313721344 35.5879130       1.31       4.69      0.002383
 2007-Apr-03 00:00   161.94154 -23.27261 .035281656714076 25.3062738       1.52       5.43      0.003233
 2007-Apr-04 00:00   162.79777 -31.58028 .043273117215395 18.3819278       1.63       5.84      0.003705

- - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 March 23:

With 303 optical measurements (2002-Oct-4 to 2007-Mar-23),
2006 VV2 solution #41 was computed. Formal 3-sigma S/X-band 
uncertainties are as shown below.

 Date__(UT)__HR:MN   POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2007-Mar-27 00:00    4.61107638      0.82       2.93      0.003873
 2007-Mar-28 00:00    7.71542009      0.74       2.65      0.003704
 2007-Mar-29 00:00   13.3873445       0.59       2.13      0.003376
 2007-Mar-30 00:00   22.7772860       0.35       1.25      0.002698
 2007-Mar-31 00:00   32.6035525       0.30       1.09      0.001463
 2007-Apr-01 00:00   33.1710267       0.70       2.50      0.000357
 2007-Apr-02 00:00   25.7515864       0.98       3.52      0.001372
 2007-Apr-03 00:00   18.4407080       1.13       4.04      0.002061
 2007-Apr-04 00:00   13.4157801       1.20       4.29      0.002444

- - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 March 26:

With 390 optical measurements (2002-Oct-4 to 2007-Mar-26),
2006 VV2 solution #46 was estimated. Formal 3-sigma X-band
uncertainties are shown below:

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2007-Mar-27 00:00    0.969895973     1.06      0.001518
 2007-Mar-28 00:00    1.95006918      0.93      0.001480
 2007-Mar-29 00:00    3.94291657      0.73      0.001392
 2007-Mar-30 00:00    7.52968699      0.56      0.001182
 2007-Mar-31 00:00   11.7570619       0.90      0.000754
 2007-Apr-01 00:00   12.7958960       1.45      0.000203
 2007-Apr-02 00:00   10.4853386       1.78      0.000323
 2007-Apr-03 00:00    7.84687100      1.92      0.000606
 2007-Apr-04 00:00    5.92102804      1.98      0.000772

OSOD and nominal predicts have been established on stealth.
Horizons has been updated with the new solution #46.

- - - - - - - - - - - - - - - - - - - -

From Jon Giorgini, 2007 March 28:

Lance reported no apparent Doppler offset and a -2+/-3 usec delay
correction from the DSS-14 March 27 track (relative to pre-experiment
solution #46).

Considering the formal 3-sigma uncertainty was 1501 usec and 1.00 Hz,
this was a 0.004_sigma delay acquisition.  Subsequent optical data
was generally within 0.1" of that prediction as well.

So the pre-experiment prediction, based opn optical measurements, was 
basically dead-on.

However, that DSS-14 delay measurement and 71 newly reported optical 
measurements have been incorporated into a new solution:

With 461 optical measurements spanning 2002-Oct-4 to 2007-Mar 28,
the single DSS-14 delay,  solution #50 was estimated.  Nominal 3-sigma
uncertainties X/S-band uncertainties are as shown below:

 Date__(UT)__HR:MN   POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2007-Mar-27 00:00   .405696325       0.21       0.76      0.000011
 2007-Mar-28 00:00   .505521656       0.20       0.72      0.000011
 2007-Mar-29 00:00   .640082853       0.18       0.64      0.000022
 2007-Mar-30 00:00   .787604410       0.14       0.51      0.000040
 2007-Mar-31 00:00   .859446373       0.12       0.41      0.000061
 2007-Apr-01 00:00   .805217282       0.14       0.51      0.000076
 2007-Apr-02 00:00   .711978958       0.19       0.66      0.000084
 2007-Apr-03 00:00   .626112020       0.21       0.75      0.000088
 2007-Apr-04 00:00   .555329875       0.22       0.80      0.000092

This solution #50 is now in Horizons.


Setups


WE WILL START WITH SOLUTION 50

Here's the plan for the 2006 VV2 Goldstone tracks:

March 27 (DOY 86)
-----------------
Start with our standard approach for the first day of any experiment: 
Monostatic CW 
10 usec, 11 usec, and 1 usec ranging
1/8 usec imaging
No chirping.
VV2 is circumpolar on March 27 so we need to pay careful attention to the PRDX and PUNCH files.

March 30 (DOY 89)
-----------------
Start with CW set up for the VLBA and DSS-13 from 0245-0400.
Switch to binary-phase coded 1/8 usec imaging. (monostatic) 
Test the chirp/digital receiver in the last 45 minutes (monostatic)


April 01 (DOY 91)
-----------------
Start with 1/8 usec binary-phase coded imaging. (monostatic or bistatic with DSS13)
Switch to CW for the VLBA observations (and DSS-13)
If the chirp system works on March 30, use it again at the end of the April 1 track.


April 02 (DOY 92)
-----------------
Start with ~10 runs of monostatic CW.
Then do 1/8 usec monostatic imaging for the rest of the track
No chirping.


April 03 (DOY 93)
-----------------
This is a really short track--only about 3 hours--so do 1/8 usec imaging only.
No chirping.


CW setup for the March 30 track (bistatic)
------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:             NONE--NO HOPPING
Dwell:                     30 seconds
Bandwidth:               4000 Hz  
Sampling interval:       2500 x 0.1 usec 
VME FFT for PSD files:   4096 for 0.98-Hz resolution  


Monostatic CW setup 
------------------- 
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:             2
Dwell:                     10 seconds
Bandwidth:               4000 Hz  
Sampling interval:       2500 x 0.1 usec 
VME FFT for PSD files:   2048 for 1.95-Hz resolution  


Possible ranging setups:
---------------------------------------------------------------------------

127 x 64 10-usec single sample

baud             10 usec
code            127
gates           127
PRP            1270 usec
FFT              64   
CLT       VME     ?
          PFS     ?
ncoh              1
bandwidth       787.4 Hz   
resolution       12.3 Hz
TXOFF          +100 Hz -> echo will be centered at +8 bins or in bin 32 + 8 = 40

---------------------------------------------------------------------------

127 x 64 11-usec single sample

baud             11 usec
code            127
gates           127
PRP            1397 usec
FFT              64  
CLT       VME     ?
          PFS     ?
ncoh              1
bandwidth       715.8 Hz   
resolution       11.2 Hz
TXOFF          +100 Hz --> echo will be centered at +9 bins or in bin 32 + 9 = 41

-------------------------------------------------------------------------

127 x 64 7-usec single sample
------------------------------
baud              7 usec
code            127
gates           127
PRP             889
FFT              64
CLT        VME    ?
           PFS    ?
ncoh              1
bandwidth      1124.9 Hz   
resolution       17.6 Hz
TXOFF           +60 -> echo would be centered at +3.4 bins w/perfect ephemeris

-------------------------------------------------------------------------
127 x 64 1-usec single sample
------------------------------
baud            1 usec
code            127
gates           127
PRP             127
FFT             64
CLT             4
ncoh            15
bandwidth       525 Hz   
resolution      8.2 Hz
TXOFF           +100 -> echo would be centered at +12.2 bins  or in bin 32 + 12.2 = 44

-------------------------------------------------------------------------------
0.125-usec ranging (left over from the 1992 UY4 observations in August, 2005)
------------------
setup           JX1XS001 revised 
baud            0.125 usec
code            127
gates           127
FFT             64
ncoh            984
bandwidth       64.016384 Hz     
resolution      1.000256 Hz
TXOFF           We used 10 Hz, placing COM in cell 32+10=42
                Henceforth use 15 Hz, to put COM in 32+15=47
incoh sums      4 looks=> 8 sec/record => expect records per run ~ RTT/8
PFS CLT gate    21

_____________________________________________________________________
POSSIBLE RANGING SETUPS: (code=127, FFT=64, single-pol'n) 
   These are from JX, w/ max-band (min-acc) options from Ray Jurgens.
   Currently configured for 5-sec records.
_______________________________________________________________________
 Setup        Baud        RP         1-acc 1-acc      
            usec   m      usec        band   res    acc  band     res 
_______________________________________________________________________
 
JX1XS110  11.000 1650    1397.0      715.8  11.2      2   358     5.6
JX1XS070   7.000 1050     889.0     1124.9  17.6      3   375     5.9
                                                      
JX1XS020   2.000  300     254.0     3937.0  61.5     12   328     5.1
                                                      4   984    15.4 

JX1XS010   1.000  150     127.0     7874.0 123.0     41   192     3.0 
                                                      8   984    15.4 

JX1XS005   0.500   75      63.5    15748.0 246.1    123   128     2.0 
                                                     15  1050    16.4 

JX1XS002   0.250   37.5    31.75   31496.1 492.1    492    64     1.0
                                                     30  1050    16.4 
 
JX1XS001   0.125   18.75   15.875  62992.1 984.3   1970    32     0.5 
                                                     60  1050    16.4 
____________________________________________________________________


Instructions

NOTE: Data should be moved to the appropriate subdirectories in stealth:/export/data0/rosema/2006VV2/raw/

2006 VV2 POINTING:

   OSOD and predicts are at Goldstone on stealth:

   /export/data3/osod/ops/2006vv2/2006vv2.PRDX.OUT.Mar30-Apr04.DSS14-mono.s50
                                 /2006vv2.PUNCH.OUT.Mar30-Apr04.DSS14-mono.s50

                                 /2006vv2.PRDX.OUT.Mar30-Apr02.DSS14-GEO_DSS13.s50
                                 /2006vv2.PUNCH.OUT.Mar30-Apr02.DSS14-GEO_DSS13.s50

                                 /EPH.OUT.s50

and have been copied to:
   /export/data0/rosema/2006VV2/support/


SUMMARY OF GOLDSTONE PRDX FILES
We need:
-a standard monostatic ephemeris for DSS-14 to be used during the normal observations.

For the VLBA observations:
A DSS-14 ephemeris with Doppler taken out on transmit, so that the 
frequency at Earth COM is constant.

A DSS-13 ephemeris with Doppler from Earth COM taken out on receive.  
The plan is to receive CW with DSS-13 during the VLBA tracks to make sure 
that DSS-14 is pointed properly and the frequency of the signal is constant at 
the geocenter.

Pointing ephemerides for the 10 VLBA stations and the GBT during the 
Goldstone-VLBA tracks.  The stations are only doing receive, and require 
a constant geocenter frequency.  We need a separate ephemeris for each station 
because parallax is in the arcminute range, approximately the size of an antenna beamwidth.

POINTING  
                                                  TX Offsets    
Date (UTC)   DOY  hhmmss    RA       Dec   Macro  LHA      Dec    RTT  OSOD

2007 03 27   086  090000 113.6303 83.9297  A                      43.9  46
2007 03 27   086  100000 115.4595 83.7256  A                      43.6
2007 03 27   086  110000 117.2262 83.5128  A                      43.3
2007 03 27   086  120000 118.9303 83.2919  A    -0.0199  -0.0027  42.9
2007 03 27   086  130000 120.5710 83.0637  A                      42.6
2007 03 27   086  140000 122.1472 82.8289  A                      42.2
2007 03 27   086  150000 123.6574 82.5881  A                      41.9

2007 03 30   089  010000 154.0794 53.8667  A                      25.4  50
2007 03 30   089  020000 154.2384 53.0680  A    -0.0011  -0.0056  25.2
2007 03 30   089  030000 154.3867 52.2547  AB                     25.1
2007 03 30   089  040000 154.5262 51.4260   B   -0.0009  -0.0058  24.9
2007 03 30   089  050000 154.6591 50.5815   BC                    24.7
2007 03 30   089  060000 154.7876 49.7211    C  -0.0009  -0.0059  24.5
2007 03 30   089  070000 154.9141 48.8450    C                    24.4

2007 04 01   091  010000 159.5093  7.5201  A                      23.9  50
2007 04 01   091  020000 159.5718  6.6076  A    -0.0004  -0.0061  24.0
2007 04 01   091  030000 159.6286  5.7047  AB                     24.2
2007 04 01   091  040000 159.6809  4.8118   B   -0.0003  -0.0060  24.3
2007 04 01   091  050000 159.7298  3.9292   BC                    24.5
2007 04 01   091  060000 159.7768  3.0575    C  -0.0003  -0.0060  24.6
2007 04 01   091  070000 159.8235  2.1969    C                    24.8

2007 04 02   092  020000 161.0249 -11.8790  A                     28.9  50
2007 04 02   092  030000 161.0644 -12.5059  A   -0.0003  -0.0051  29.1
2007 04 02   092  040000 161.1003 -13.1214  AB                    29.4
2007 04 02   092  050000 161.1336 -13.7252   B  -0.0003  -0.0049  29.6
2007 04 02   092  060000 161.1654 -14.3173   BC                   29.9
2007 04 02   092  070000 161.1970 -14.8978    C -0.0003  -0.0048  30.2
2007 04 02   092  080000 161.2296 -15.4668    C                   30.5

2007 04 03   093  030000 162.1323 -24.5602  A                     36.1  50
2007 04 03   093  040000 162.1582 -24.9619  A                     36.4
2007 04 03   093  050000 162.1820 -25.3552  A   -0.0003  -0.0039  36.8
2007 04 03   093  060000 162.2046 -25.7401  A                     37.0
2007 04 03   093  070000 162.2271 -26.1168  A                     37.4


2006vv2.PRDX.OUT.Mar30-Apr04.DSS14-mono.s50 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2007 APR 01 01:10 23.9180765562 -300173.211 290.1154 7.3674 159.520 20.625 2007 APR 01 01:20 23.9392137856 -302947.714 292.6116 7.2149 159.531 22.558 2007 APR 01 01:30 23.9605465972 -305753.672 295.1079 7.0627 159.541 24.482 2007 APR 01 01:40 23.9820771707 -308590.382 297.6044 6.9107 159.552 26.397 2007 APR 01 01:50 24.0038076315 -311457.070 300.1011 6.7590 159.562 28.298 2007 APR 01 02:00 24.0257400572 -314352.885 302.5980 6.6076 159.572 30.184 2007 APR 01 02:10 24.0478764543 -317276.908 305.0950 6.4564 159.582 32.053 2007 APR 01 02:20 24.0702187639 -320228.151 307.5921 6.3056 159.591 33.901 2007 APR 01 02:30 24.0927688642 -323205.557 310.0894 6.1549 159.601 35.724 2007 APR 01 02:40 24.1155285431 -326208.006 312.5869 6.0046 159.610 37.520 2007 APR 01 02:50 24.1384995141 -329234.313 315.0845 5.8545 159.619 39.284 2007 APR 01 03:00 24.1616834153 -332283.232 317.5822 5.7047 159.629 41.011 2007 APR 01 03:10 24.1850817765 -335353.461 320.0801 5.5552 159.638 42.698 2007 APR 01 03:20 24.2086960473 -338443.640 322.5780 5.4060 159.646 44.337 2007 APR 01 03:30 24.2325275784 -341552.355 325.0761 5.2570 159.655 45.924 2007 APR 01 03:40 24.2565776188 -344678.143 327.5743 5.1083 159.664 47.451 2007 APR 01 03:50 24.2808473106 -347819.493 330.0726 4.9599 159.672 48.910 2007 APR 01 04:00 24.3053376921 -350974.849 332.5710 4.8118 159.681 50.294 2007 APR 01 04:10 24.3300496849 -354142.612 335.0695 4.6640 159.689 51.593 2007 APR 01 04:20 24.3549841034 -357321.145 337.5681 4.5164 159.697 52.798 2007 APR 01 04:30 24.3801416480 -360508.777 340.0668 4.3692 159.706 53.899 2007 APR 01 04:40 24.4055228912 -363703.804 342.5655 4.2223 159.714 54.885 2007 APR 01 04:50 24.4311282925 -366904.491 345.0643 4.0756 159.722 55.745 2007 APR 01 05:00 24.4569581912 -370109.080 347.5632 3.9292 159.730 56.470 2007 APR 01 05:10 24.4830127946 -373315.791 350.0621 3.7832 159.738 57.049 2007 APR 01 05:20 24.5092921899 -376522.825 352.5610 3.6374 159.746 57.475 2007 APR 01 05:30 24.5357963371 -379728.366 355.0600 3.4920 159.753 57.740 2007 APR 01 05:40 24.5625250635 -382930.592 357.5591 3.3468 159.761 57.841 2007 APR 01 05:50 24.5894780744 -386127.667 0.0581 3.2020 159.769 57.776 2007 APR 01 06:00 24.6166549479 -389317.756 2.5572 3.0575 159.777 57.545 2007 APR 01 06:10 24.6440551247 -392499.020 5.0563 2.9132 159.785 57.151 2007 APR 01 06:20 24.6716779257 -395669.624 7.5554 2.7693 159.792 56.601 2007 APR 01 06:30 24.6995225381 -398827.742 10.0544 2.6258 159.800 55.900 2007 APR 01 06:40 24.7275880246 -401971.556 12.5535 2.4825 159.808 55.059

2006 VV2 GOLDSTONE MASTERLOG

============================================================================== RCV TX setup runs start -stop osod OFFSET Poln Notes ------------------------------------------------------------------------------ March 27 CW 4 kHz, 2 hops, 10 s dwell 10 112604-113957 46 None RCP 10 usec, 127 code ncoh=1 4 115756-120301 46 +200 RCP 11 usec, 127 code ncoh=1 2 121824-122033 46 +200 RCP 1 usec, 127 code ncoh=15 7 124806-125735 46 +100 RCP 1/8 usec, 127 code ncoh=120 9 132145-133525 46 +60 RCP weak echoes 1/2 usec, 127 code ncoh= 3 140358-140735 46 +60 RCP no echoes CW 4 kHz, 2 hops, 10 s dwell 10 141535-142928 46 None RCP ------------------------------------------------------------------------------ March 30 CW 4 KHz, nohops 30 s dwell -- 024520-040000 50 none RCP rx at DSS13 & VLBA 1/8 usec, 127 code ncoh=246 34 042717-045613 50 +60 RCP 1/8 usec, 127 code ncoh=246 77 050213-060824 50 +60 RCP We had several bad runs from 0520-0527 due to transposed digits with pointing macro C (runs 23-29) chirp tests 40 MHz 29 062013-064451 50 ------------------------------------------------------------------------------ April 1 1/8 usec, 127 code ncoh=246 221 011107-042618 50 +60 RCP CW 4 KHz, nohops 30 s dwell -- ~0425??-0530?? 50 none RCP rx at DSS13 & VLBA chirp tests 40 MHz 37 054732-063514 50 ------------------------------------------------------------------------------ April 2 1/8 usec, 127 code ncoh=246 41 034554-042622 50 +60 RCP bad ME: pointing mediocre ...break to work on master equatorial... 1/8 usec, 127 code ncoh=246 113 055302-074506 50 +60,+50 rows RCP pointing good chirp tests during postcal ------------------------------------------------------------------------------ April 3 1/8 usec, 255 code ncoh=123 142 040042-065952 50 +60 RCP ============================================================================== RADAR ASTROMETRY 2007 03 27 12:50:00 R 42.624164 3.0 8560.D6 -14 Benner,L.A.M. Correction of -2 usec to solution 46 from 10, 11, and 1 usec ranging. Placed COM at TE of 1 usec echo, which is 6 rows deep. ==============================================================================
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov Pasadena, CA 91109-8099 | Plan: To live long and prosper http://echo.jpl.nasa.gov/asteroids/2006VV2/html/2006VV2_planning.html

Asteroid Radar Astronomy