2001 FE90 Goldstone Radar Observations Planning


Background

2001 FE90 was discovered by the LONEOS program at Lowell Observatory on March 26, 2001.
Its closest approach will be at 0.0180 AU (~7 lunar distances) on June 28, 2009.
We only have rough estimate of its size (within factor of two of 0.35 km) based on 
its absolute visual magnitude of 20.0. 2001 FE90 will be a very  strong radar target at both 
Goldstone and Arecibo and we expect to  image it with the highest available resolutions 
(7.5 m for Arecibo and 19 m for Goldstone).

This object will brighten below 13th magnitude in late June/early July.
2001 FE90 has been classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
Orbital and Physical Characteristics  
 orbit type               Apollo
 semimajor axis           1.930 AU     
 eccentricity             0.49
 inclination              8.8°       
 perihelion distance      0.976 AU     
 aphelion distance        2.885 AU     
 absolute magnitude (H)   20.0
 diameter                 0.35 km  (plus/minus factor of two)
 rotation period          29 minutes (M. D. Hicks, K. Lawrence, J. Pollock, Y. Krugly, R. Durkee, pers. comm.)
 lightcurve amplitude    ~2-2.5 mag
 pole direction           unknown  
 spectral class           A          (M. D. Hicks, K. Lawrence, pers. comm.)
                          S          (A. W. Harris)

Last update: 2009 August 14

Discovery

M.P.E.C. 2001-F48                                Issued 2001 Mar. 28, 23:17 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

                                   2001 FE90

Observations:
     K01F90E* C2001 03 26.30272 13 21 56.93 +45 48 06.6          18.6 R      699
     K01F90E  C2001 03 26.33490 13 22 01.72 +45 49 45.1                      699
     K01F90E  C2001 03 26.36718 13 22 06.44 +45 51 24.7                      699
     K01F90E  C2001 03 26.39945 13 22 11.23 +45 53 02.8                      699
     K01F90E  C2001 03 27.23359 13 24 35.05 +46 35 48.1          18.1 R      699
     K01F90E  C2001 03 27.26287 13 24 39.65 +46 37 20.9                      699
     K01F90E  C2001 03 27.29214 13 24 44.24 +46 38 55.3                      699
     K01F90E  C2001 03 27.32123 13 24 48.83 +46 40 25.0                      699
     K01F90E  C2001 03 27.37943 13 24 57.00 +46 43 21.3          18.9        649
     K01F90E  C2001 03 27.38291 13 24 57.51 +46 43 31.3          18.6        649
     K01F90E  C2001 03 27.38638 13 24 58.03 +46 43 42.8          19.2        649
     K01F90E  C2001 03 27.84086 13 26 22.15 +47 06 58.5                      587
     K01F90E  C2001 03 27.84485 13 26 22.83 +47 07 12.2                      587
     K01F90E  C2001 03 28.27044 13 27 39.08 +47 29 34.2          18.9 R      699
     K01F90E  C2001 03 28.29959 13 27 43.85 +47 31 07.3                      699
     K01F90E  C2001 03 28.32870 13 27 48.65 +47 32 39.0                      699
     K01F90E  C2001 03 28.35780 13 27 53.46 +47 34 09.6                      699
     K01F90E  C2001 03 28.78959 13 29 16.64 +47 56 17.2                      557
     K01F90E  C2001 03 28.79264 13 29 17.19 +47 56 26.6                      557
     K01F90E  C2001 03 28.79417 13 29 17.50 +47 56 32.3                      557
     K01F90E  C2001 03 28.79723 13 29 18.02 +47 56 41.5                      557
     K01F90E  C2001 03 28.80659 13 29 19.74 +47 57 11.7                      557

Observer details:
557 Ondrejov.  Observer P. Kusnirak.  0.65-m f/3.6 reflector + CCD.
587 Sormano.  Observers F. Manca, V. Giuliani.  0.5-m reflector + CCD.
649 Powell Observatory, Louisburg.  Observer K. Smalley.  0.75-m Newtonian
    + CCD.
699 Lowell Observatory-LONEOS.  Observer B. A. Skiff. Measurer B. W. Koehn.
    0.59-m LONEOS Schmidt + CCD.

Orbital elements:
2001 FE90                                                            PHA 0.031
Epoch 2001 Mar. 12.0 TT = JDT 2451980.5                 Spahr
M 334.32675              (2000.0)            P               Q
n   0.37867866     Peri.  145.28361     -0.44077317     +0.88525367
a   1.8921497      Node    98.15536     -0.85379039     -0.36242087
e   0.4849227      Incl.    8.62648     -0.27705773     -0.29150823
P   2.60           H   19.6           G   0.15
From 22 observations 2001 Mar. 26-28.

Ephemeris:
2001 FE90                a,e,i = 1.89, 0.48, 9                   q = 0.9746
Date    TT    R. A. (2000) Decl.     Delta      r     Elong.  Phase     V
2001 03 22    13 11.34   +42 13.1    0.249    1.185   134.7    36.7    18.4
2001 04 01    13 40.40   +50 46.3    0.207    1.126   123.3    47.9    18.2
2001 04 11    14 36.83   +59 45.0    0.172    1.074   110.2    61.1    18.1
2001 04 21    16 41.45   +66 28.4    0.145    1.030    96.0    75.9    18.1
2001 05 01    19 46.27   +62 04.2    0.128    0.998    82.1    90.6    18.3
2001 05 11    21 40.58   +45 26.3    0.126    0.979    72.4   100.5    18.7
2001 05 21    22 37.96   +27 20.0    0.142    0.975    70.9   101.2    19.0
2001 05 31    23 12.72   +13 26.6    0.170    0.986    75.7    94.7    19.1
2001 06 10    23 36.95   +03 45.9    0.202    1.011    83.0    85.5    19.2
2001 06 20    23 54.34   -03 12.0    0.235    1.048    91.3    75.8    19.2
2001 06 30    00 05.59   -08 43.5    0.265    1.096   100.4    65.9    19.2
2001 07 10    00 10.68   -13 32.9    0.293    1.151   110.2    55.9    19.3
2001 07 20    00 09.19   -18 00.8    0.321    1.213   121.0    45.9    19.3
2001 07 30    00 00.94   -22 07.4    0.351    1.278   132.3    36.0    19.3
2001 08 09    23 46.97   -25 36.5    0.388    1.346   143.5    26.6    19.4
2001 08 19    23 29.41   -28 08.1    0.437    1.415   152.9    19.0    19.5
2001 08 29    23 11.43   -29 30.0    0.499    1.484   157.7    15.0    19.8
2001 09 08    22 56.09   -29 45.3    0.578    1.553   155.9    15.4    20.2
2001 09 18    22 45.09   -29 08.9    0.673    1.621   149.6    18.3    20.7
2001 09 28    22 38.94   -27 56.8    0.783    1.688   141.8    21.5    21.3
2001 10 08    22 37.27   -26 22.8    0.907    1.754   133.7    24.3    21.7

Timothy B. Spahr             (C) Copyright 2001 MPC           M.P.E.C. 2001-F48


SNR Calculation

Target Name:    2001 FE90
HMag:           20.0
Diameter:       0.35 km  (plus/minus factor of two)
Period:         2.2 hr   (we assumed very fast rotation to get a lower bound on the SNRs)


                                              #           max
 start date    window       RA, dec   dist    runs   SNR  SNR/run
-----------------------------------------------------------------------------
2009 Jun 20  19:27-08:13    180,  43  0.047    411    140      7
2009 Jun 21  19:42-08:22    184,  42  0.041    450    220     11
2009 Jun 22  20:01-08:33    189,  40  0.036    495    370     18
2009 Jun 23  20:27-08:47    195,  38  0.031    545    650     31
2009 Jun 24  21:03-09:03    203,  34  0.026    597   1200     54
2009 Jun 25  21:51-09:20    213,  27  0.022    642   2200    100
2009 Jun 26  22:56-09:37    224,  18  0.019    658   3800    160
2009 Jun 28  00:17-09:48    237,   5  0.018    615   4800    210
2009 Jun 29  01:52-09:50    250,  -9  0.018    506   3700    180
2009 Jun 30  03:31-09:42    262, -20  0.021    363   1900    110
2009 Jul 01  05:07-09:22    272, -28  0.024    225    760     53
2009 Jul 02  06:47-08:43    281, -33  0.029     90    240     26

Goldstone SNRs assume Ptx = 450 kW 

Track Assignments


Goldstone Schedule

         UT           UT       PST                 AST                  Duration  Round-trip
DOY      Date      TX Window   TX Window           TX Window            hh:mm     time (sec)  SNR/Run 
---      ----      ---------   ---------           ---------            --------- -------     -------
174      Jun 23    0100-0345   1800-2045 Jun 22    2100-2345 Jun 22     2:45      36           20
177      Jun 26    0130-0740   1830-0040 Jun 25/26 2130-0340 Jun 25/26  6:10      23          100 cancelled
178      Jun 27    0110-0320   1810-2020 Jun 26    2110-2320 Jun 26     2:10      20          160 cancelled
181      Jun 30    0435-0750   2135-0050 Jun 29/30 0035-0350 Jun 29/30  3:15      21          110

Arecibo Schedule

176/177  Jun 25/26 2300-0131   1600-1831 Jun 25    1900-2131 Jun 25     2:31      23          1500 cancelled   
177/178  Jun 26/27 2330-0222   1630-1922 Jun 26	   1930-2222 Jun 26     2:52      20          2500 28 s of data
178      Jun 28    0033-0250   1733-1950 Jun 27	   2033-2250 Jun 27     2:17      18          3400 cancelled

Arecibo SNRs assume Ptx = 700 kW


Uncertainties

From Jon Giorgini, Jun 29 2009:

With 171 optical measurements 2001-Mar-26 to 2009-Jun-27,
2001 FE90 s37 was computed. 3-sigma X-band uncertainties are below.

 Date__(UT)__HR:MN   POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2009-Jun-23 00:00        0.553         3.48       0.000093
 2009-Jun-24 00:00        0.608         3.60       0.000095
 2009-Jun-25 00:00        0.673         3.78       0.000099
 2009-Jun-26 00:00        0.742         4.02       0.000105
 2009-Jun-27 00:00        0.808         4.32       0.000111
 2009-Jun-28 00:00        0.893         4.50       0.000115
 2009-Jun-29 00:00        1.020         4.56       0.000112
 2009-Jun-30 00:00        1.104         4.32       0.000104
 2009-Jul-01 00:00        1.096         4.08       0.000095

From Jon Giorgini, Jun 28 2009:

With 151 optical measurements (2001-Mar-26 to 2009-Jun-27),
formal s35 3-sigma X-band uncertainties are below.

 Date__(UT)__HR:MN   POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2009-Jun-23 00:00        0.658         3.96       0.000371
 2009-Jun-24 00:00        0.698         4.14       0.000375
 2009-Jun-25 00:00        0.810         4.38       0.000377
 2009-Jun-26 00:00        1.151         4.68       0.000372
 2009-Jun-27 00:00        1.905         5.10       0.000352
 2009-Jun-28 00:00        2.982         5.52       0.000302
 2009-Jun-29 00:00        3.809         5.64       0.000224
 2009-Jun-30 00:00        3.927         5.52       0.000146
 2009-Jul-01 00:00        3.556         5.22       0.000099


From Jon Giorgini, Jun 22 2009:

With 88 optical measurements (2001-Mar-26 to 2009-Jun-21),
s33 3-sigma uncertainties are:

 Date__(UT)__HR:MN   POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2009-Jun-22 00:00        1.418         6.36       0.002577
 2009-Jun-23 00:00        2.013         6.00       0.002560
 2009-Jun-24 00:00        3.335         5.64       0.002525
 2009-Jun-25 00:00        5.808         5.28       0.002453
 2009-Jun-26 00:00       10.040         5.34       0.002302
 2009-Jun-27 00:00       16.416         6.60       0.002003
 2009-Jun-28 00:00       23.522         9.12       0.001484
 2009-Jun-29 00:00       27.339        11.82       0.000794
 2009-Jun-30 00:00       25.917        13.56       0.000246
 2009-Jul-01 00:00       21.826        14.28       0.000537


From Jon Giorgini, Jun 18 2009:

With 78 optical measurements (2001-Mar-26 to 2009-Jun-13), 2001 FE90
solution #31 was estimated.  3-sigma X-band uncertainties are below.

 Date__(UT)__HR:MN   POS_3sigma   DOP_X_3sig  RT_delay_3sig
 2009-Jun-22 00:00        4.926         8.34       0.002652
 2009-Jun-23 00:00        5.800         8.22       0.002635
 2009-Jun-24 00:00        7.170         8.10       0.002601
 2009-Jun-25 00:00        9.469         8.22       0.002531
 2009-Jun-26 00:00       13.362         8.88       0.002387
 2009-Jun-27 00:00       19.312        10.50       0.002104
 2009-Jun-28 00:00       25.986        13.02       0.001626
 2009-Jun-29 00:00       29.456        15.42       0.001044
 2009-Jun-30 00:00       27.810        16.80       0.000716
 2009-Jul-01 00:00       23.568        17.10       0.000847

From Horizons, 2009 May 20: JPL Solution 27, #obs = 76 (2001-2009)

 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC. delta              POS_3sigma   DOP_S-sig    DOP_X-sig  RT_delay-sig
 2009-Jun-23 00:00 *m  188.42605  40.38104 .036584382079772        9.009       0.38         1.37       0.003131
 2009-Jun-24 00:00 *m  194.36516  37.98713 .031654150130671       10.576       0.37         1.32       0.003116
 2009-Jun-25 00:00 *m  201.77521  34.31269 .027066270184552       13.030       0.37         1.34       0.003067
 2009-Jun-26 00:00 *m  210.93638  28.60188 .023033424852959       17.152       0.44         1.57       0.002941
 2009-Jun-27 00:00 *m  221.91640  19.94574 .019904509227689       23.726       0.59         2.11       0.002658
 2009-Jun-28 00:00 *m  234.30444   8.06500 .018162623901331       31.620       0.81         2.88       0.002133
 2009-Jun-29 00:00 *m  247.11154  -5.34890 .018219873431646       36.289       1.00         3.58       0.001421
 2009-Jun-30 00:00 *m  259.13684 -17.24279 .020069712505801       34.966       1.11         3.96       0.000839
 2009-Jul-01 00:00 *m  269.55059 -25.97444 .023296697519282       30.249       1.13         4.06       0.000764
---------------------------------------------------------


Apparent Magnitudes and Solar Elongations:
 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC.  APmag            delta    S-O-T /r
 2009-Jun-10 00:00 *   161.01586  46.20831  19.00 .107924846591807    68.8147 /T
 2009-Jun-11 00:00 *   161.92194  46.13308  18.91 .102350670547697    68.6918 /T
 2009-Jun-12 00:00 *   162.90566  46.04405  18.81 .096769831801204    68.6283 /T
 2009-Jun-13 00:00 *   163.98205  45.93731  18.70 .091185565302804    68.6357 /T
 2009-Jun-14 00:00 *   165.16987  45.80767  18.58 .085601459409109    68.7282 /T
 2009-Jun-15 00:00 *   166.49276  45.64811  18.45 .080021619644827    68.9241 /T
 2009-Jun-16 00:00 *   167.98081  45.44894  18.29 .074450906917496    69.2471 /T
 2009-Jun-17 00:00 *   169.67274  45.19653  18.12 .068895290867613    69.7283 /T
 2009-Jun-18 00:00 *   171.61891  44.87130  17.92 .063362386364590    70.4094 /T
 2009-Jun-19 00:00 *   173.88555  44.44447  17.69 .057862289523297    71.3474 /T
 2009-Jun-20 00:00 *m  176.56066  43.87254  17.43 .052408917787370    72.6218 /T
 2009-Jun-21 00:00 *m  179.76200  43.08800  17.13 .047022223826607    74.3461 /T
 2009-Jun-22 00:00 *m  183.64740  41.98307  16.77 .041731971291884    76.6865 /T
 2009-Jun-23 00:00 *m  188.42605  40.38104  16.35 .036584382079772    79.8919 /T
 2009-Jun-24 00:00 *m  194.36516  37.98713  15.85 .031654150130671    84.3416 /T
 2009-Jun-25 00:00 *m  201.77521  34.31269  15.26 .027066270184552    90.6102 /T
 2009-Jun-26 00:00 *m  210.93638  28.60188  14.59 .023033424852959    99.5101 /T
 2009-Jun-27 00:00 *m  221.91640  19.94574  13.88 .019904509227689   111.9168 /T
 2009-Jun-28 00:00 *m  234.30444   8.06500  13.22 .018162623901331   127.9040 /T
 2009-Jun-29 00:00 *m  247.11154  -5.34890  12.76 .018219873431646   145.3519 /T
 2009-Jun-30 00:00 *m  259.13684 -17.24279  12.53 .020069712505801   160.5106 /T
 2009-Jul-01 00:00 *m  269.55059 -25.97444  12.53 .023296697519282   170.1001 /T
 2009-Jul-02 00:00 *m  278.11169 -31.82118  12.86 .027425935499738   170.8617 /T
 2009-Jul-03 00:00 *m  284.97813 -35.65604  13.35 .032117823695135   167.0654 /L
 2009-Jul-04 00:00 *   290.45236 -38.20629  13.80 .037166110162350   163.4356 /L
 2009-Jul-05 00:00 *   294.83565 -39.94686  14.19 .042449877206533   160.5976 /L
 2009-Jul-06 00:00 *   298.37762 -41.16835  14.52 .047897208620561   158.4454 /L
 2009-Jul-07 00:00 *   301.27077 -42.04775  14.81 .053464063821163   156.8198 /L
 2009-Jul-08 00:00 *   303.65960 -42.69474  15.08 .059122660709280   155.5919 /L
 2009-Jul-09 00:00 *   305.65197 -43.17910  15.31 .064855045845401   154.6663 /L
 2009-Jul-10 00:00 *   307.32871 -43.54640  15.52 .070649436553865   153.9730 /L

Setups



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:    1028 for 3.9 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
-------------------------------------------------------------------------
1 usec ranging
baud            1 usec
code            1023
FFT             128
ncoh            1
bandwidth       977.5 Hz   
resolution      7.64 Hz
TXOFF           +100 -> echo would be centered in bin 64 + 13 = 77 

-------------------------------------------------------------------------------
0.25-usec ranging 
baud            0.25 usec
code            127
FFT             128 
ncoh            40 
bandwidth       787  Hz     
resolution      6.2  Hz
TXOFF          +100 Hz to put echo at 64 + 16 = bin 80 
_____________________________________________________________________
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 aardvark:/export/data0/2001FE90/raw/

2001 FE90 POINTING:

  OSOD and predicts are on aardvark:

/export/data3/osod/ops/2001fe90/PRDX.OUT.s37
                              /PUNCH.OUT.s37
                              /EPH.OUT.s37


POINTING  
                                                            TX Offsets    
Date (UTC)   DOY  hhmmss    RA        Dec         Macro    LHA      Dec      RTT    OSOD
2009 06 30   181  040000    261.1121 -18.9680                                20.5
2009 06 30   181  050000    261.5486 -19.3791             		     20.6
2009 06 30   181  060000    261.9794 -19.7825       A     -2.50    -2.30     20.7   s37
2009 06 30   181  070000    262.4061 -20.1780             		     20.8
2009 06 30   181  080000    262.8303 -20.5656             		     20.9

Transmit offsets are given in millidegrees.  


PRDX.OUT.s37 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2009 JUN 30 04:00 20.4535787579 -268405.529 320.3602 -18.9680 261.112 23.892 2009 JUN 30 04:10 20.4724466672 -269961.979 322.7939 -19.0370 261.185 25.116 2009 JUN 30 04:20 20.4914243272 -271536.875 325.2277 -19.1059 261.258 26.280 2009 JUN 30 04:30 20.5105129862 -273128.955 327.6617 -19.1745 261.331 27.381 2009 JUN 30 04:40 20.5297138050 -274736.926 330.0959 -19.2429 261.404 28.416 2009 JUN 30 04:50 20.5490278497 -276359.457 332.5303 -19.3111 261.476 29.382 2009 JUN 30 05:00 20.5684560936 -277995.192 334.9648 -19.3791 261.549 30.274 2009 JUN 30 05:10 20.5879994146 -279642.742 337.3995 -19.4469 261.621 31.090 2009 JUN 30 05:20 20.6076585913 -281300.696 339.8343 -19.5144 261.693 31.826 2009 JUN 30 05:30 20.6274343024 -282967.620 342.2693 -19.5818 261.765 32.479 2009 JUN 30 05:40 20.6473271255 -284642.059 344.7044 -19.6489 261.836 33.047 2009 JUN 30 05:50 20.6673375365 -286322.540 347.1397 -19.7158 261.908 33.525 2009 JUN 30 06:00 20.6874659065 -288007.579 349.5751 -19.7825 261.979 33.913 2009 JUN 30 06:10 20.7077125030 -289695.675 352.0106 -19.8490 262.051 34.208 2009 JUN 30 06:20 20.7280774869 -291385.321 354.4462 -19.9152 262.122 34.409 2009 JUN 30 06:30 20.7485609144 -293075.003 356.8818 -19.9813 262.193 34.514 2009 JUN 30 06:40 20.7691627340 -294763.203 359.3176 -20.0471 262.264 34.523 2009 JUN 30 06:50 20.7898827889 -296448.404 1.7535 -20.1127 262.335 34.436 2009 JUN 30 07:00 20.8107208164 -298129.088 4.1894 -20.1780 262.406 34.254 2009 JUN 30 07:10 20.8316764467 -299803.744 6.6255 -20.2432 262.477 33.977 2009 JUN 30 07:20 20.8527492038 -301470.868 9.0615 -20.3081 262.548 33.607 2009 JUN 30 07:30 20.8739385077 -303128.965 11.4977 -20.3728 262.618 33.146 2009 JUN 30 07:40 20.8952436738 -304776.557 13.9338 -20.4373 262.689 32.595 2009 JUN 30 07:50 20.9166639148 -306412.176 16.3700 -20.5016 262.760 31.958 2009 JUN 30 08:00 20.9381983391 -308034.378 18.8063 -20.5656 262.830 31.237

2001 FE90 GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------ Jun 23 2009 (DOY 174) TX UTC Receive Setup hops dwell code ncoh FFT Bandwidth OSOD offset Runs Start -Stop CW 2 10 s 4096 20000 Hz 31 0 15 011452-013242 10 us 127 1 64 787.4 Hz 31 +100 21 014752-021305 CW 2 10 s 4096 20000 Hz 31 0 57 022233-033240 *note: we never got the echo with 10 usec ranging (low SNR + bad weather at Goldstone) Jun 26 2009 (DOY 177) track cancelled Jun 27 2009 (DOY 178) track cancelled Jun 30 2009 (DOY 181) TX UTC Receive Setup hops dwell code ncoh FFT Bandwidth OSOD offset Runs Start -Stop CW 2 10 s 1024 4000 37 0 40 053926-060821 1.0 us 1023 1 128 977.5 37 +100 4 062129-062359 0.25 us 127 40 128 787.4 37 +100 13 063527-064433 0.25 us 127 40 128 787.4 39 +100 40 070219-073111 0.25 us* 39 +100 35 075402-081917 *note: chirp test (did not work) ------------------------------------------------------------------------------------ Radar Astrometry 2009 06 30 06:20:00 R 20.72782549 4.00 8560.D6 -14 Brozovic, Benner GSSR, delay correction based on 1 usec ranging and 1023 code Range correction to s37 is -252 usec ==============================================================================
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov California Institute of Technology | Plan: To live long and prosper Pasadena, CA 91109-8099 http://echo.jpl.nasa.gov/asteroids/2001FE90/2001FE90_planning.html

Asteroid Radar Astronomy