(360191) 1988 TA Goldstone Radar Observations Planning


Background


(360191) 1988 TA was discovered by J. Phinney and J. Mueller during the second Palomar Sky Survey on Oct 5, 1988.  
The asteroid's physical characteristics are effectively unknown except for its absolute magnitude of 20.8,
which suggests a diameter within a factor of two of about 0.2 km.   This asteroid has been associated 
with the C-class by Binzel et al. (2003, Asteroids III),  but we did not find an original source
of measurements that would provide a direct link to a dark optical albedo.
G. Kronk (WGN, vol. 17, 1989) suggested that the orbit of 1988 TA resembles two streams in the
Virginid meteor shower.

This asteroid will approach within 0.0336 AU (13.1 lunar distances) on May 10.  
1988 TA should be a moderately strong radar target at Goldstone and a strong radar target at Arecibo.
Imaging may be possible at Goldstone if 1988 TA is a relatively slow rotator.  At Arecibo, the 
signal-to-noise ratios should be strong enough for imaging with 7.5 m resolution.

Five tracks are scheduled at Goldstone from May 7-12 and at Arecibo from May 7-11.

1988 TA will be a good optical target for about two weeks from the end of April to the middle 
of May when it will reach 16th magnitude at favorable solar elongations.  
Lightcurves obtained prior to the radar observations would be particularly helpful.

1988 TA  has been classified as a "Potentially Hazardous Asteroid" (PHA) by the IAU's Minor Planet Center.

********************************************************************************
*** WE ARE GOING TO USE THE TRACK ON MAY 7 TO WORK ON THE POINTING MODEL     ***
*** WE WILL NOT OBSERVE THE ASTEROID ON THE FIRST TRACK ON MAY 7             ***
********************************************************************************

Orbital and Physical Characteristics  
 orbit type               Apollo
 semimajor axis           1.541 AU
 eccentricity             0.479
 inclination              2.5 deg
 perihelion distance      0.803 AU
 aphelion distance        2.279 AU
 absolute magnitude (H)   20.8
 diameter                 200-400 m 
 rotation period          unknown
 pole direction           unknown
 lightcurve amplitude     unknown
 spectral class           unknown, possibly C (Binzel et al, Asteroids III) 

Last update: 2013 May 07

Discovery MPEC

                                                  Circular No. 4662
Central Bureau for Astronomical Telegrams
INTERNATIONAL ASTRONOMICAL UNION
Postal Address: Central Bureau for Astronomical Telegrams
Smithsonian Astrophysical Observatory, Cambridge, MA 02138, U.S.A.
Telephone 617-495-7244/7440/7444 (for emergency use only)
TWX 710-320-6842 ASTROGRAM CAM     EASYLINK 62794505
MARSDEN or GREEN@CFA.BITNET    MARSDEN or GREEN@CFAPS2.SPAN


1988 TA
     J. Mueller and J. Phinney report their discovery, with the 1.2-m
Oschin Schmidt telescope in the course of the second Palomar Sky Survey,
of a fast-moving asteroidal object.  The following observations are
available:

     1988 UT             R.A. (1950) Decl.     Mag.   Observer
     Oct.  5.30556    1 37 12.30   +12 30 54.2  16     Mueller
           5.33681    1 37 03.85   +12 27 39.9          ''
           6.30694    1 34 11.10   +11 00 26.4          ''
           6.32778    1 34 06.76   +10 58 49.6          ''
           9.29809    1 28 32.40   + 8 13 04.7         Shoemaker
          10.32720    1 27 10.10   + 7 35 31.7         Shao
          10.32726    1 27 13.94   + 7 35 43.6         Shoemaker

J. Mueller (Palomar).
C. S. and E. M. Shoemaker (Palomar).  0.46-m Schmidt telescope.
  Images slightly out of focus.  Measured by J. Gibson.
C.-Y. Shao (Oak Ridge).  1.55-m reflector.

     Orbital elements from the above observations by B. G. Marsden,
Center for Astrophysics, show this to be an Apollo-type object:

     T = 1988 Aug. 13.70 ET           Peri. = 104.31
     e = 0.5029                       Node  = 194.67    1950.0
     q = 0.7964 AU                    Incl. =   2.66
       a =  1.6022 AU      n = 0.48599      P =   2.03 years

     1988 ET      R.A. (1950) Decl.     Delta      r      Mag.
     Oct.  6     1 34.98    +11 26.6    0.054    1.052    16.4
           8     1 30.52    + 9 13.2
          10     1 27.61    + 7 47.6    0.085    1.083    17.2
          12     1 25.55    + 6 48.4
          14     1 24.01    + 6 05.5    0.117    1.114    17.8
          16     1 22.83    + 5 33.2
          18     1 21.92    + 5 08.6    0.150    1.145    18.5
          20     1 21.21    + 4 49.6
          22     1 20.69    + 4 35.0    0.184    1.177    19.1
          24     1 20.32    + 4 23.8
          26     1 20.08    + 4 15.3    0.219    1.209    19.7

1988 October 12                (4662)             Daniel W. E. Green

SNR Calculation

1988TA:  
D = 0.22 km,     (a conservative lower bound)
P = 2.0 h        (We assumed rapid rotation in order to place a conservative lower bound on the SNRs)
OC albedo = 0.1  (a standard guess)
                                                      #         SNR/       SNR/
w DOY start date    window        RA, dec   dist     runs       day        run
18 126 2013 May  4  04:56-14:02   247,  +3  0.056    308         22         1
18 126 2013 May  5  05:00-14:27   252,  +7  0.049    356         35         2
19 127 2013 May  6  05:06-14:59   257, +11  0.044    414         57         3
19 128 2013 May  7  05:18-15:42   265, +16  0.039    481         90         5
19 129 2013 May  8  05:35-16:36   275, +22  0.036    551        130         6
19 130 2013 May  9  06:03-17:41   287, +28  0.034    610        170         8
19 131 2013 May 10  06:42-18:50   302, +33  0.034    637        170         8
19 132 2013 May 11  07:29-19:55   318, +36  0.036    622        140         6
19 133 2013 May 12  08:19-20:46   332, +37  0.039    574        100         5
20 134 2013 May 13  09:04-21:23   343, +36  0.044    514         64         3
20 135 2013 May 14  09:40-21:48   352, +35  0.049    455         40         2
20 136 2013 May 15  10:09-22:06   359, +34  0.055    402         25         1

Goldstone SNRs assume Ptx = 440 kW 


Arecibo SNRs  : Tsys = 23 K,  P = 800 kW,  elev >= 70.31 deg 
                                                 #         SNR/      SNR/
 start date    window        RA, dec   dist    runs        day       run
2013 May  3  05:23-06:27    243,   0  0.063      30         82        16
2013 May  4  05:15-06:55    247,  +3  0.056      51        190        30
2013 May  5  05:15-07:22    251,  +6  0.050      73        370        46
2013 May  6  05:22-07:52    257, +10  0.045      97        640        68
2013 May  7  05:39-08:24    264, +15  0.040     120       1100       100
2013 May  8  06:10-09:00    273, +21  0.036     132       1600       140
2013 May  9  07:00-09:39    285, +27  0.034     133       1900       170
2013 May 10  08:10-10:18    300, +32  0.034     107       1700       180
2013 May 11  09:28-10:56    316, +36  0.035      69        980       130
2013 May 12  10:34-11:36    330, +37  0.038      46        540        83
2013 May 13  11:14-12:23    342, +37  0.043      46        380        59
2013 May 14  11:37-13:05    351, +36  0.048      52        290        44
2013 May 15  11:53-13:38    358, +34  0.054      56        220        33
2013 May 16  12:03-14:02      3, +33  0.061      57        160        24
2013 May 17  12:11-14:20      7, +32  0.067      56        120        17
2013 May 18  12:17-14:34     11, +31  0.074      54         82        12
2013 May 19  12:21-14:43     14, +30  0.081      51         59         9

Track Assignments

DOY START BOT  EOT  END FACILITY USER   ACTIVITY    
127 0440 0610 1050 1120  DSS-14  GSSR   AST 1988 TA 
128 0405 0535 1130 1200  DSS-14  GSSR   AST 1988 TA 
130 0515 0645 1115 1145  DSS-14  GSSR   AST 1988 TA 
131 0600 0730 1325 1355  DSS-14  GSSR   AST 1988 TA 
132 1130 1300 1635 1705  DSS-14  GSSR   AST 1988 TA 


Goldstone tracks:

         UT       UT           PDT                 AST                Duration   Round-trip  SNR/
 DOY     Date     TX Window    TX Window           TX window          hh:mm      time (sec)  Run 
 ---     ----     ---------    ---------           ---------          ---------  ---------   ----
 127     May  7   0515-1050    2215-0350 May  6-7  0115-0650  May  7   5:35       45          3  WE WILL USE THE TIME TO IMPROVE THE POINTING MODEL
 128     May  8   0535-1130    2235-0430 May  7-8  0135-0730  May  8   5:55       40          5  Overlap with Arecibo from 0610-0901 UT
 129     May  9   ...no track..
 130     May 10   0645-1115    2345-0415 May  9-10 0245-0715  May 10   4:30       34          8  Overlap with Arecibo from 0809-1018 UT
 131     May 11   0730-1325    0030-0625 May 11    0330-0925  May 11   5:55       34          8  Overlap with Arecibo from 0928-1056 UT
 132     May 12   1200-1635    0500-0935 May 12    0800-1235  May 12   4:35       36          6
 
NOTE: TXON in the table above corresponds to when transmit authorization starts.

Elevations will exceed ~77 degrees on May 10 from 11:40-13:25 UT and on May 11 from 12:40-14:40 UT
so pointing could be a problem during those intervals.  Fortunately, those intervals do not correspond
to times when the Goldstone and Arecibo schedules overlap.


Arecibo tracks:
         UT       UT           PDT                AST                 Duration   Round-trip   SNR/  
 DOY     Date     TX Window    TX Window          TX window           hh:mm      time (sec)   Run 
 ---     ----     ---------    ---------          ---------           ---------  ---------    ----
 128     May  7   0539-0825    2239-0125 May  6-7 0139-0424  May  7    2:45        40         100    Cancelled due to equipment problems
 129     May  8   0610-0901    2310-0201 May  7-8 0210-0500  May  8    2:50        36         140    Overlap with Goldstone
 130     May  9   0700-0939    0000-0239 May  9   0300-0539  May  9    2:39        34         170    
 131     May 10   0809-1018    0109-0318 May 10   0410-0618  May 10    2:08        34         180    Overlap with Goldstone
 132     May 11   0928-1056    0228-0356 May 11   0528-0656  May 11    1:28        35         130    Overlap with Goldstone


Uncertainties

From Jon Giorgini, 2013 May 8:

For Marina's s30 update of 1988 TA last night, 3-sigma S/X-band 
uncertainties are now:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2013-May-08 00:00       0.465        0.12        0.44       0.000006
 2013-May-09 00:00       0.509        0.14        0.52       0.000007
 2013-May-10 00:00       0.533        0.15        0.56       0.000010
 2013-May-11 00:00       0.530        0.15        0.54       0.000015
 2013-May-12 00:00       0.505        0.13        0.49       0.000019

- - - - - - - - - - 

From Jon Giorgini, 2013 May 7:

Based on 176 measurements (1988-Oct-5 to 2013-May-6).

Formal 3-sigma S/X-band uncertainties:

Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
2013-May-07 00:00       0.825        0.66        2.41       0.000254
2013-May-08 00:00       1.090        0.98        3.58       0.000232
2013-May-09 00:00       1.384        1.36        4.95       0.000200
2013-May-10 00:00       1.625        1.66        6.02       0.000160
2013-May-11 00:00       1.724        1.72        6.26       0.000122
2013-May-12 00:00       1.671        1.56        5.67       0.000103
2013-May-13 00:00       1.523        1.29        4.69       0.000108

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

From Jon Giorgini, 2013 May 1:

Based on 108 optical measurements 1988-Oct-5 to 2013-Apr-30,
360191 (1988 TA) orbit solution #25 was estimated. 

OSOD w/nominal predicts was established on aardvark (DSS-14) 
and rserv (AO) in the /a360191 sub-directories.

Formal 3-sigma S/X-band uncertainties:

 Date__(UT)__HR:MN  POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2013-May-07 00:00       2.705        2.13        7.76       0.000403
 2013-May-08 00:00       3.241        2.87       10.43       0.000348
 2013-May-09 00:00       3.717        3.57       12.99       0.000289
 2013-May-10 00:00       3.957        3.94       14.31       0.000258
 2013-May-11 00:00       3.853        3.75       13.62       0.000282
 2013-May-12 00:00       3.476        3.15       11.44       0.000342
 2013-May-13 00:00       2.997        2.45        8.90       0.000406

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

From Jon Giorgini, 2013 Apr 29:

Here is the current s22, 107 obs., 1988-Oct-05 to 2013-Apr-20:

 Date__(UT)__HR:MN  RA_3sigma DEC_3sigma POS_3sigma  DOP_S_3sig  DOP_X_3sig  RT_delay_3sig
 2013-May-05 00:00      2.544      1.460      2.933        1.77        6.45       0.000546
 2013-May-06 00:00      3.062      1.695      3.499        2.42        8.79       0.000496
 2013-May-07 00:00      3.683      1.935      4.161        3.27       11.88       0.000433
 2013-May-08 00:00      4.358      2.112      4.843        4.26       15.47       0.000365
 2013-May-09 00:00      4.928      2.130      5.369        5.11       18.58       0.000326
 2013-May-10 00:00      5.132      2.004      5.509        5.40       19.63       0.000364
 2013-May-11 00:00      4.777      1.981      5.172        4.93       17.90       0.000464
 2013-May-12 00:00      3.978      2.135      4.515        3.97       14.43       0.000575
 2013-May-13 00:00      3.065      2.231      3.791        2.98       10.82       0.000667
 2013-May-14 00:00      2.284      2.180      3.157        2.19        7.94       0.000736
 2013-May-15 00:00      1.704      2.038      2.657        1.62        5.90       0.000786
 2013-May-16 00:00      1.303      1.865      2.276        1.24        4.51       0.000823

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

Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination:

 Date__(UT)__HR:MN     R.A._(J2000.0)_DEC.  APmag              delta     S-O-T /r  T-O-M/Illu%
 2013-May-01 00:00 A   237.38277  -3.84929  16.43   0.07879639722316  158.0406 /L   56.0/ 66.1
 2013-May-02 00:00 A   239.58845  -2.21375  16.28   0.07165931441227  155.9531 /L   67.5/ 55.1
 2013-May-03 00:00 A   242.25047  -0.22871  16.13   0.06474921345682  153.2596 /L   78.2/ 44.1
 2013-May-04 00:00 A   245.51478   2.20773  15.98   0.05813010764743  149.7914 /L   87.8/ 33.6
 2013-May-05 00:00 A   249.58623   5.22475  15.84   0.05189633009741  145.3219 /L   95.9/ 24.0
 2013-May-06 00:00 A   254.75140   8.97026  15.74   0.04618709057706  139.5596 /L  102.0/ 15.8
 2013-May-07 00:00 A   261.39861  13.56893  15.68   0.04120436271862  132.1712 /L  105.6/  9.1
 2013-May-08 00:00 A   270.00350  19.00622  15.70   0.03722545104622  122.8843 /L  106.1/  4.2
 2013-May-09 00:00 A   280.99387  24.91646  15.86   0.03458495041190  111.7242 /L  103.5/  1.1
 2013-May-10 00:00 A   294.36798  30.42454  16.19   0.03358934956581   99.3110 /L   98.9/  0.0  New Moon
 2013-May-11 00:00 A   309.18398  34.44276  16.70   0.03437485741900   86.8542 /L   94.3/  0.8
 2013-May-12 00:00 Am  323.65968  36.42992  17.35   0.03682433293002   75.5973 /L   91.5/  3.4
 2013-May-13 00:00 Am  336.23215  36.70421  18.07   0.04063788834748   66.2253 /L   91.3/  7.6
 2013-May-14 00:00 Am  346.34101  35.96190  18.80   0.04547617871770   58.8050 /L   94.0/ 13.5
 2013-May-15 00:00 Am  354.20128  34.77768   n.a.   0.05105331394146   53.0725 /L   98.9/ 20.6
 2013-May-16 00:00 Am    0.28713  33.48278   n.a.   0.05715967647391   48.6848 /L  105.6/ 28.9

After mid-May, 1988 TA will be too close to the Sun to observe with most optical telescopes.

Setups



We don't know anything about the spin state of 1988 TA so we're going to start with our standard
CW setup in the hope of obtaining an echo quickly and resolving the object in Doppler frequency.

CW setup:
---------------------------------------------------------------------------
TX polarization           RCP
RCV polarization          LCP & RCP
Frequency hops:           2
Dwell:                    20 seconds
Bandwidth:                4000 Hz 
Sampling interval:        2500 x 0.1 usec 
PFS FFT:                  2048 for 1.95 Hz resolution 

Ranging setups:
---------------------------------------------------------------------------
10-usec
baud             10 usec
code            127
PRP            1270 usec
FFT             128   
ncoh              1 
bandwidth       787 Hz   
resolution        6.15 Hz
TXOFF          +100 Hz  (echo in bin 64+16=80)
---------------------------------------------------------------------------
11-usec 
baud             11 usec
code            127
PRP            1397 usec
FFT             128  
ncoh              1 
bandwidth       716 Hz   
resolution      5.6 Hz
TXOFF          +100 Hz  (echo in bin 64+18=82) 
-------------------------------------------------------------------------
1-usec 
baud            1 usec
code            127
FFT             512
ncoh             128
bandwidth        61.3 Hz   
resolution       0.12 Hz
TXOFF           +8 Hz -> echo would be centered at 256 + 67=323
-------------------------------------------------------------------------------
0.25-usec ranging 
baud            0.25 usec
code            255
FFT             128
ncoh             16
bandwidth       980  Hz     
resolution       7.7 Hz
TXOFF          +80 Hz -> echo would be centered at 64 + 10 = 74
-------------------------------------------------------------------------------
0.125-usec ranging 
baud            0.125 usec
code            255
FFT             128
ncoh             32
bandwidth       980  Hz     
resolution       7.7 Hz
TXOFF          +80 Hz -> echo would be centered at 64 + 10 = 74

_____________________________________________________________________
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/data0/1988TA/raw/

1988 TA POINTING:

  OSOD and predicts are aardvark:

Monostatic predicts for the new waveform generator:
/export/data3/osod/ops/a360191/PRDX.OUT.14v-14-14.s30
                              /PUNCH.OUT.14v-14-14.s30
                              /EPH.OUT.s30
POINTING 
                                                         TX Offset
Date (UTC)   DOY  hhmmss    RA        Dec      Macro   LHA    Dec    RTT    OSOD
2013 05 10   130  060000    298.1446  31.6458    A    -5.70   1.90   33.5   s30
2013 05 10   130  070000    298.7575  31.8411    A    -5.70   1.80   33.5
2013 05 10   130  080000    299.3679  32.0331    A    -5.70   1.80   33.5
2013 05 10   130  090000    299.9758  32.2212    A    -5.70   1.70   33.6
2013 05 10   130  100000    300.5817  32.4049    A    -5.70   1.70   33.6
2013 05 10   130  110000    301.1862  32.5838    A    -5.60   1.60   33.6
2013 05 10   130  120000    301.7900  32.7575    A    -5.60   1.60   33.6

Transmit offsets are given in millidegrees.  


PRDX.OUT.14f-14-14.s30 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2013 MAY 10 06:00 33.5257430548 -15881.354 263.1712 31.6458 298.145 12.805 2013 MAY 10 06:10 33.5268972213 -17056.069 265.5757 31.6786 298.247 14.531 2013 MAY 10 06:20 33.5281348118 -18261.578 267.9803 31.7113 298.349 16.275 2013 MAY 10 06:30 33.5294579759 -19497.902 270.3850 31.7438 298.451 18.037 2013 MAY 10 06:40 33.5308688829 -20765.009 272.7897 31.7764 298.554 19.814 2013 MAY 10 06:50 33.5323696779 -22062.812 275.1945 31.8088 298.656 21.606 2013 MAY 10 07:00 33.5339625128 -23391.169 277.5994 31.8411 298.758 23.413 2013 MAY 10 07:10 33.5356495230 -24749.885 280.0043 31.8734 298.859 25.233 2013 MAY 10 07:20 33.5374328283 -26138.709 282.4093 31.9055 298.961 27.066 2013 MAY 10 07:30 33.5393145235 -27557.339 284.8144 31.9376 299.063 28.911 2013 MAY 10 07:40 33.5412966961 -29005.419 287.2196 31.9695 299.165 30.767 2013 MAY 10 07:50 33.5433813838 -30482.542 289.6248 32.0014 299.266 32.634 2013 MAY 10 08:00 33.5455706143 -31988.248 292.0301 32.0331 299.368 34.511 2013 MAY 10 08:10 33.5478663762 -33522.027 294.4355 32.0647 299.469 36.398 2013 MAY 10 08:20 33.5502706102 -35083.321 296.8409 32.0962 299.571 38.293 2013 MAY 10 08:30 33.5527852242 -36671.520 299.2464 32.1277 299.672 40.197 2013 MAY 10 08:40 33.5554120865 -38285.969 301.6520 32.1590 299.773 42.108 2013 MAY 10 08:50 33.5581530130 -39925.966 304.0576 32.1901 299.875 44.027 2013 MAY 10 09:00 33.5610097685 -41590.764 306.4633 32.2212 299.976 45.952 2013 MAY 10 09:10 33.5639840587 -43279.570 308.8690 32.2521 300.077 47.884 2013 MAY 10 09:20 33.5670775377 -44991.551 311.2748 32.2829 300.178 49.822 2013 MAY 10 09:30 33.5702918047 -46725.832 313.6806 32.3136 300.279 51.765 2013 MAY 10 09:40 33.5736283860 -48481.499 316.0865 32.3442 300.380 53.713 2013 MAY 10 09:50 33.5770887527 -50257.599 318.4925 32.3746 300.481 55.665 2013 MAY 10 10:00 33.5806743026 -52053.145 320.8985 32.4049 300.582 57.621 2013 MAY 10 10:10 33.5843863528 -53867.113 323.3045 32.4351 300.683 59.581 2013 MAY 10 10:20 33.5882261682 -55698.447 325.7105 32.4651 300.783 61.543 2013 MAY 10 10:30 33.5921949285 -57546.063 328.1166 32.4950 300.884 63.508 2013 MAY 10 10:40 33.5962937305 -59408.844 330.5227 32.5247 300.985 65.475 2013 MAY 10 10:50 33.6005235977 -61285.649 332.9289 32.5543 301.085 67.443 2013 MAY 10 11:00 33.6048854774 -63175.311 335.3350 32.5838 301.186 69.411 2013 MAY 10 11:10 33.6093802242 -65076.641 337.7412 32.6131 301.287 71.378 2013 MAY 10 11:20 33.6140086137 -66988.429 340.1474 32.6423 301.387 73.344 2013 MAY 10 11:30 33.6187713411 -68909.446 342.5536 32.6713 301.488 75.305 2013 MAY 10 11:40 33.6236690047 -70838.446 344.9598 32.7002 301.589 77.259 2013 MAY 10 11:50 33.6287021200 -72774.171 347.3660 32.7289 301.689 79.202 2013 MAY 10 12:00 33.6338711193 -74715.350 349.7722 32.7575 301.790 81.125

1988 TA GOLDSTONE MASTERLOG

============================================================================== Receive TX Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes ------------------------------------------------------------------------------
Dr. Lance A. M. Benner | PHONE: (818) 354-7412 Mail Stop 183-610 | FAX: (818) 393-4445 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/1988TA/1988TA_planning.html

Asteroid Radar Astronomy
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