1990 OS Planning

Background 

1990 OS was discovered by Eleanor Helin at Palomar on July 21, 1990.  1990 OS 
will approach within 0.023 AU (8.8 lunar distances) on November 12.  It will be 
a very strong radar target and we expect to image it with a range resolution as 
high as 1/8 usec.

1990 OS was detected at Goldstone during its discovery apparition on
August 2-3, 1990.  The detections were in Doppler-only and yielded an X-band
radar cross section of 0.02 km^2 and SC/OC = 0.23+/-0.03. 

Arecibo delay-Doppler imaging of 1990 OS on November 5-6 revealed that this object is
a binary system with a rapidly rotating spheroidal primary that has a diameter of 
close to 300 meters.  The primary has a bandwidth (when converted to X-band) of about
14 Hz.  The secondary is less than 100 m in diameter and it also appears
to be a relatively rapid rotator.  The orbital period of the system is between 18 - 24 
hours.  Otherwise the rotation period and taxonomic class are unknown.

Arecibo echoes from 1990 OS's satellite were very weak, so we probably will not be 
able to detect the satellite at Goldstone.  

1990 OS will be well-positioned for photometry and vis-IR spectroscopy this fall, beginning
in mid-November, so it is likely that the rotation period and taxonomic class will become 
known shortly after the radar observations conclude.

Due to its size and the proximity of its orbit to that of Earth, 1990 OS has been 
classified as a "Potentially  Hazardous Asteroid" by the International 
Astronomical Union's Minor Planet Center.

These will be combined Goldstone and Arecibo observations.  Arecibo time has been
scheduled from November 5-10 and Goldstone time is scheduled from November 9-13.
We are planning to use some of our time originally allocated for 1990 OS to observe
1937 UB (Hermes) instead because that object is also a binary.


Orbital and Physical Characteristics
 orbit type               Apollo   
 semimajor axis           1.680 AU     
 eccentricity             0.463        
 inclination              1.12°       
 perihelion distance      0.901 AU     
 aphelion distance        2.458 AU     
 absolute magnitude (H)  19.7
 diameter                 0.2 to 0.7 km  
 rotation period          unknown
 pole direction           unknown
 lightcurve amplitude     unknown
 spectral class           unknown      

Last updated: 2003 November 13

Discovery

 

Discovery Announcement

                                                  Circular No. 5064
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


1990 OS
     E. Helin reports her discovery of a fast-moving minor planet on a
July 21 film obtained by B. Roman, K. Lawrence, J. Michaud and herself
with the 0.46-m Schmidt telescope at Palomar.  The object was confirmed
on a July 26 exposure by H. E. Holt and D. H. Levy with the same
telescope.  The following measurements are by Roman and Lawrence:

     1990 UT             R.A. (1950) Decl.       Mag.
     July 21.41111   21 17 55.70   -24 22 57.9   16.0
          21.43889   21 18 03.75   -24 22 49.1
          26.35677   21 53 45.52   -23 33 57.1   16.3
          26.38785   21 54 02.25   -23 33 23.3

     There is noticeable apparent acceleration, and the following orbital
elements, although very uncertain, indicate a close approach to the earth.
Further positions are urgently required.

     T = 1990 Sept. 18.939 ET         Peri. =  27.648
     e = 0.40707                      Node  = 341.819   1950.0
     q = 0.89899 AU                   Incl. =   1.087
       a =  1.51620 AU     n = 0.527924     P =   1.87 years

     1990 ET      R.A. (1950) Decl.     Delta      r        V
     July 28    22 11.66    -22 54.1    0.064    1.074    15.2
          29    22 24.83    -22 20.6
          30    22 40.14    -21 36.0    0.054    1.063    14.9
          31    22 57.97    -20 36.4
     Aug.  1    23 18.73    -19 17.1    0.046    1.052    14.7
           2    23 42.79    -17 32.0
           3     0 10.35    -15 15.1    0.039    1.041    14.6
           4     0 41.29    -12 22.4
           5     1 14.97    - 8 54.5    0.035    1.031    14.8
           6     1 50.22    - 5 00.3
           7     2 25.48    - 0 56.0    0.034    1.020    15.2

1990 July 28                   (5064)              Brian G. Marsden

SNR Calculation

 
HMag:           19.7
Diameter:       0.363
Period:         4

                           ------------GOLDSTONE----------  -------------ARECIBO-----------
                                            Max                              Max
                                    Dat     Run    UTC               Dat     Run    UTC
    Date   RA  Decl Delta  Runs     SNR     SNR   Window    Runs     SNR     SNR   Window
2003 11  4 243  -4  0.049   282      96       6 17:00-25:18    0       0       0      -
2003 11  5 241  -1  0.045   317     148       9 16:41-25:11   32    1368     255 17:18-17:53
2003 11  6 239   2  0.040   360     233      14 16:18-25:11   65    3703     523 16:36-18:11
2003 11  7 236   7  0.036   411     376      20 15:54-25:11   93    7468     840 16:06-18:11
2003 11  8 232  12  0.032   473     613      31 15:18-25:06  120   13169    1274 15:35-18:06
2003 11  9 227  18  0.028   547     990      46 14:35-25:00  140   21580    1916 15:05-17:48
2003 11 10 221  26  0.025   629    1515      67 13:48-24:48  144   31067    2757 14:41-17:11
2003 11 11 212  35  0.024   700    2070      87 12:41-24:36   95   26590    3051 14:30-16:00
2003 11 12 199  44  0.023   700    2341      96 11:18-24:06    0       0       0      -
2003 11 13 182  52  0.023   700    2158      88  9:41-23:18    0       0       0      -
2003 11 14 163  55  0.025   700    1677      68  8:05-22:11    0       0       0      -
2003 11 15 145  56  0.028   700    1166      48  6:47-21:00    0       0       0      -
2003 11 16 131  54  0.031   694     760      32  5:54-19:53    0       0       0      -
2003 11 17 121  52  0.035   616     475      21  5:24-19:00    0       0       0      -
2003 11 18 113  50  0.039   548     301      14  5:00-18:18    0       0       0      -
2003 11 19 108  47  0.044   490     195      10  4:42-17:41    0       0       0      -

Arecibo SNRs above assume nominal system parameters, which are about a factor of four larger
than the current system sensitivity (due to the klystron failure).

Goldstone Track Assignments

 
              

       UT       UT                Duration
DOY  Date    TX Window   PST TX    (hhmm)
---  ----    ---------   --------  -------
315 Nov 11   1300-2330  0500-1530   1030
316 Nov 12   1100-1745  0300-0945   0615 
317 Nov 13   1045-2130  0245-1330   1045

The last parts of these windows might be used for Hermes:
315 Nov 11   1725-2330  0925-1530
316 Nov 12   1710-2120  0910-1320
317 Nov 13   1650-2130  0850-1330 



Sky Motion

Uncertainties

 

From Horizons (2003 October 30): JPL solution # 13, # obs: 33 (1990-2003)

 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.         delta POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2003-Nov-05 00:00     240.90711  -0.98792  0.0445231643 39.3713632       3.13      11.18      0.011895
 2003-Nov-06 00:00     238.69225   2.37651  0.0399023465 46.4698918       2.92      10.46      0.011437
 2003-Nov-07 00:00     235.88101   6.56892  0.0355477972 55.6287085       2.72       9.74      0.010854
 2003-Nov-08 00:00     232.23656  11.82744  0.0315586753 67.3709371       2.56       9.17      0.010090
 2003-Nov-09 00:00     227.39376  18.39342  0.0280791570 81.8772831       2.50       8.94      0.009077
 2003-Nov-10 00:00     220.78620  26.37210  0.0253079378 98.1073834       2.61       9.34      0.007778
 2003-Nov-11 00:00     211.57175  35.42717  0.0234850349 112.611132       2.91      10.42      0.006323
 2003-Nov-12 00:00     198.72021  44.41306  0.0228279300 119.963601       3.30      11.82      0.005222
 2003-Nov-13 00:00     181.77763  51.47968  0.0234261790 116.872961       3.62      12.96      0.005163

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

From Jon Giorgini (2003 November 7):

  1990 OS sol #19 has been established on stealth.  Nominal predicts 
run from Nov 8-14. Optical data spans 1990-Jul-21 to 2003-Jun-16,
with 2 delay and 4 Doppler. The resulting 3-sigma X-band uncertainties 
are tabulated below:

      DATE          Pointing  X-band Dop     Delay  
                      (")         Hz         (sec)  
-----------------  ---------  ----------  ----------
 8-NOV-2003 00:00     19.500       2.739    0.000021
 9-NOV-2003 00:00     22.172       2.916    0.000041
10-NOV-2003 00:00     24.892       3.018    0.000066
11-NOV-2003 00:00     27.079       2.975    0.000095
12-NOV-2003 00:00     28.195       2.732    0.000125
13-NOV-2003 00:00     27.743       2.298    0.000153
14-NOV-2003 00:00     26.010       1.759    0.000177

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

From Jon Giorgini (2003 November 11):

   Here is the evolution of the uncertainties as new
radar data was incorporated.

   New optical data will probably reduce pointing
uncertainties in about 1 week, when sky brightness 
is again favorable, but it's an unusual situation 
until then.

      DATE          Pointing  X-band Dop     Delay  
                      (")         Hz         (sec)  
-----------------  ---------  ----------  ----------
 3-NOV-2003 00:00     29.682      12.734    0.012980
 4-NOV-2003 00:00     34.105      12.053    0.012655
 5-NOV-2003 00:00     39.820      11.315    0.012271
 6-NOV-2003 00:00     16.456       2.780    0.000032
 7-NOV-2003 00:00     17.115       2.533    0.000005
 8-NOV-2003 00:00     19.500       2.739    0.000021
 9-NOV-2003 00:00     22.172       2.916    0.000041
10-NOV-2003 00:00     24.892       3.018    0.000066
11-NOV-2003 00:00     27.079       2.975    0.000095
12-NOV-2003 00:00     26.408       2.491    0.000005
13-NOV-2003 00:00     25.995       2.091    0.000022
14-NOV-2003 00:00     24.379       1.594    0.000043
15-NOV-2003 00:00     22.234       1.091    0.000067

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

From Jon Giorgini (2003 November 12):

  I've excluded the Arecibo delay/outlier, two optical observations
from 1990 with ~2.8 sigma outliers, and deweighted the 1990 Palomar 
data from 2" to 3" (it's inconsistent with other data reported at 
the time, not unusual for Palomar).

  Solution #27 was then generated on stealth. With usuable optical
observations spanning 1990-Jul-21 to 2003-Jun-16, 4 delay and
4 Doppler, formal 3-sigma X-band uncertainties are:

      DATE          Pointing  X-band Dop     Delay  
                      (")         Hz         (sec)  
-----------------  ---------  ----------  ----------
12-NOV-2003 00:00     29.178       2.832    0.000005
13-NOV-2003 00:00     11.966       0.675    0.000005
14-NOV-2003 00:00     11.201       0.547    0.000011
15-NOV-2003 00:00     10.196       0.416    0.000017

Setups

 

WE WILL START THE NOVEMBER 13 TRACK WITH SOLUTION 25

Initial CW setup for the Nov. 13 track:           

TX polarization           RCP
RCV polarization          LCP
Frequencies:              2
Dwell:                    10 seconds
Bandwidth:                4000 Hz 
Sampling interval:        2500 x 0.1 usec 
VME FFT for PSD files:    4096 for 0.9766-Hz resolution


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

127 x 64 10-usec single sample

baud            10 usec
code            127
gates           127
FFT             64
CLT             11
ncoh            2
bandwidth       394 Hz   
resolution      6.15 Hz
TXOFF           +60 Hz -> echo will be centered at +9.75 bins or in bin 32+10 = 42
incoh sums      64 => 10.4 sec/record

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

127 x 64 11-usec single sample, 5.6-Hz resolution.

baud            11 usec
code            127
gates           127
PRP             1397
FFT             64
CLT             11
ncoh            2
bandwidth       357.9 Hz   
resolution      5.59 Hz
TXOFF           TBD
-------------------------------------------------------------------------

127 x 64 11-usec single sample, 11.2-Hz resolution

baud            11 usec
code            127
gates           127
PRP             1397
FFT             64
CLT             11
ncoh            1
bandwidth       715.8 Hz   
resolution      11.2 Hz
TXOFF           +60 -> echo would be centered at +5 bins w/perfect ephemeris

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

127 x 64 7-usec single sample
------------------------------
baud            7 usec
code            127
gates           127
PRP             889
FFT             64
CLT             11
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             13 & 14, about evenly divided
ncoh            15
bandwidth       525 Hz   
resolution      8.2 Hz
TXOFF           +50 -> echo would be centered at +6.1 bins w/perfect ephemeris

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

0.125-usec ranging
------------------
setup           JX1XS001  
baud            0.125 usec
code            127
gates           127
FFT             64
ncoh            1968
bandwidth       32.008 Hz     
resolution      0.5001 Hz
TXOFF           6 Hz = 12 cells, => cell 44
incoh sums      4 looks=> 8 sec/record => expect records per run ~ RTT/8
CLT gate        34.8

_____________________________________________________________________
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/1990os/raw/

1990 OS POINTING: 


   OSOD and initial predicts have been set-up at
Goldstone on stealth:

   /export/data2/osod/ops/1990os/PRDX.OUT.s25      
   /export/data2/osod/ops/1990os/PUNCH.OUT.s25
   /export/data2/osod/ops/1990os/EPH.OUT.s25

The predicts are also available at:
   /export/data0/rosema/1990os/support/


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

2003 11 11   315  130000 205.3551 40.4269  A                      22.9  19
2003 11 11   315  140000 204.8004 40.8173  A                      22.9
2003 11 11   315  150000 204.2308 41.2042  A     0.0037   0.0024  22.9
2003 11 11   315  160000 203.6475 41.5863  AB                     22.8
2003 11 11   315  170000 203.0521 41.9626  AB                     22.8
2003 11 11   315  180000 202.4467 42.3326   B    0.0039   0.0023  22.8
2003 11 11   315  190000 201.8336 42.6957   B                     22.8
2003 11 11   315  200000 201.2152 43.0519   BC                    22.8
2003 11 11   315  210000 200.5938 43.4015    C                    22.8
2003 11 11   315  220000 199.9712 43.7450    C   0.0039   0.0022  22.8
2003 11 11   315  230000 199.3490 44.0833    C                    22.8
2003 11 12   316  000000 198.7281 44.4173    C                    22.8

2003 11 12   316  110000 191.6894 48.0222  A                      22.9  19
2003 11 12   316  120000 190.9812 48.3407  A     0.0046   0.0020  22.9
2003 11 12   316  130000 190.2566 48.6531  AB                     22.9
2003 11 12   316  140000 189.5166 48.9581   BC   0.0048   0.0019  23.0
2003 11 12   316  150000 188.7629 49.2544   BC                    23.0
2003 11 12   316  160000 187.9976 49.5411    C   0.0050   0.0018  23.0
2003 11 12   316  170000 187.2234 49.8176    C                    23.0
2003 11 12   316  180000 186.4434 50.0834    C                    23.1

2003 11 13   317  110000 173.2718 53.6858  A                      24.0  19
2003 11 13   317  120000 172.4442 53.8599  A                      24.1
2003 11 13   317  130000 171.6066 54.0248  A     0.0057   0.0011  24.2
2003 11 13   317  140000 170.7612 54.1794  AB                     24.2
2003 11 13   317  150000 169.9108 54.3230  AB                     24.3
2003 11 13   317  160000 169.0586 54.4553   B    0.0058   0.0009  24.4
2003 11 13   317  170000 168.2078 54.5762   B                     24.5
2003 11 13   317  180000 167.3618 54.6862   BC                    24.6
2003 11 13   317  190000 166.5233 54.7861    C                    24.7
2003 11 13   317  200000 165.6947 54.8768    C   0.0057   0.0006  24.7
2003 11 13   317  210000 164.8778 54.9599    C                    24.8
2003 11 13   317  220000 164.0733 55.0365    C                    24.9




PRDX.OUT.s23
TRANSMITTER: STATION #14,     RECEIVER: STATION #14
RECEIVER    U.T.         RANGE         DOPPLER      LHA      DEC      RA      EL

 2003 NOV 12 11:00     22.8959355515   -38660.912 267.5846  48.0210 191.689  24.075 
 2003 NOV 12 11:10     22.8986758619   -39534.617 270.2084  48.0744 191.572  25.674 
 2003 NOV 12 11:20     22.9014785179   -40439.559 272.8326  48.1277 191.454  27.291 
 2003 NOV 12 11:30     22.9043456887   -41375.584 275.4572  48.1808 191.336  28.925 
 2003 NOV 12 11:40     22.9072795509   -42342.474 278.0823  48.2338 191.218  30.574 
 2003 NOV 12 11:50     22.9102822640   -43339.945 280.7079  48.2867 191.100  32.238 
 2003 NOV 12 12:00     22.9133559544   -44367.649 283.3339  48.3394 190.980  33.916 
 2003 NOV 12 12:10     22.9165027221   -45425.173 285.9604  48.3919 190.861  35.605 
 2003 NOV 12 12:20     22.9197246515   -46512.042 288.5873  48.4443 190.741  37.305 
 2003 NOV 12 12:30     22.9230237761   -47627.717 291.2147  48.4964 190.620  39.014 
 2003 NOV 12 12:40     22.9264020944   -48771.602 293.8425  48.5484 190.499  40.731 
 2003 NOV 12 12:50     22.9298615612   -49943.038 296.4708  48.6002 190.378  42.454 
 2003 NOV 12 13:00     22.9334040830   -51141.309 299.0995  48.6518 190.256  44.183 
 2003 NOV 12 13:10     22.9370315143   -52365.644 301.7287  48.7032 190.133  45.915 
 2003 NOV 12 13:20     22.9407456478   -53615.215 304.3582  48.7543 190.011  47.649 
 2003 NOV 12 13:30     22.9445482330   -54889.142 306.9882  48.8053 189.888  49.382 
 2003 NOV 12 13:40     22.9484409393   -56186.494 309.6186  48.8560 189.764  51.114 
 2003 NOV 12 13:50     22.9524253693   -57506.290 312.2494  48.9065 189.640  52.841 
 2003 NOV 12 14:00     22.9565030660   -58847.504 314.8806  48.9568 189.516  54.561 
 2003 NOV 12 14:10     22.9606754933   -60209.062 317.5121  49.0068 189.391  56.272 
 2003 NOV 12 14:20     22.9649440386   -61589.850 320.1441  49.0566 189.266  57.970 
 2003 NOV 12 14:30     22.9693100096   -62988.714 322.7764  49.1061 189.141  59.650 
 2003 NOV 12 14:40     22.9737746265   -64404.459 325.4091  49.1554 189.015  61.309 
 2003 NOV 12 14:50     22.9783390349   -65835.860 328.0421  49.2044 188.889  62.940 
 2003 NOV 12 15:00     22.9830042884   -67281.654 330.6754  49.2531 188.762  64.537 
 2003 NOV 12 15:10     22.9877713511   -68740.553 333.3091  49.3016 188.635  66.092 
 2003 NOV 12 15:20     22.9926410900   -70211.240 335.9430  49.3498 188.508  67.594 
 2003 NOV 12 15:30     22.9976142954   -71692.372 338.5773  49.3977 188.381  69.031 
 2003 NOV 12 15:40     23.0026916354   -73182.587 341.2118  49.4454 188.253  70.387 
 2003 NOV 12 15:50     23.0078737151   -74680.504 343.8467  49.4928 188.125  71.644 
 2003 NOV 12 16:00     23.0131610143   -76184.727 346.4817  49.5398 187.997  72.778 
 2003 NOV 12 16:10     23.0185539312   -77693.845 349.1171  49.5866 187.868  73.763 
 2003 NOV 12 16:20     23.0240527538   -79206.441 351.7526  49.6331 187.740  74.570 
 2003 NOV 12 16:30     23.0296576870   -80721.087 354.3884  49.6794 187.611  75.170 
 2003 NOV 12 16:40     23.0353688135   -82236.356 357.0244  49.7253 187.481  75.537 
 2003 NOV 12 16:50     23.0411861267   -83750.818 359.6606  49.7709 187.352  75.653 
 2003 NOV 12 17:00     23.0471095311   -85263.046   2.2969  49.8163 187.223  75.513 
 2003 NOV 12 17:10     23.0531388091   -86771.617   4.9334  49.8613 187.093  75.124 
 2003 NOV 12 17:20     23.0592736548   -88275.120   7.5701  49.9061 186.963  74.506 
 2003 NOV 12 17:30     23.0655136749   -89772.151  10.2069  49.9505 186.833  73.687 
 2003 NOV 12 17:40     23.0718583558   -91261.325  12.8438  49.9947 186.703  72.696 
 2003 NOV 12 17:50     23.0783070986   -92741.270  15.4809  50.0385 186.573  71.562 





 
GOLDSTONE MASTERLOG


MASTERLOG
===================================================================================================
                                              RCV      
file         setup                   runs start -stop   osod OFFSET TX Poln    
---------------------------------------------------------------------------------------------------

November 11

CW   4 kHz, 4096 FFT                  42  130512-133841  19  none   RCP   VME & PFS

10 us x 12.3 Hz  127 code, 64 FFT      2  140314-140422  19  +50    RCP   VME & PFS

11 us x 11.2 Hz  127 code, 64 FFT      4  143915-144203  19  +50    RCP   VME & PFS

1/8 us x 2.0 Hz  127 code, 64 FFT    173  150434-172357  19  +10    RCP   VME & PFS

1/8 us x 2.0 Hz  127 code, 64 FFT     27  173304-175433  21  +10    RCP   VME & PFS

1/8 us x 2.0 Hz  127 code, 64 FFT     51  210424-214507  21  +10    RCP   VME & PFS

1.0 us x 2.0 Hz  127 code, 64 FFT      8  220140-220741  21  +10    RCP   VME & PFS

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

November 12

CW   4 kHz, 4096 FFT                  10  112030-112811  23   none   RCP

CW bistatic, xmit 8560 MHz                112920-130120  23   none   RCP

10 us bistatic                            130120-140110  23   none   RCP

10 us x 12.3 Hz  127 code, 64 FFT      3  142513-142712  23   +50 Hz RCP 463 kW

1 us x 2 Hz  127 code, 64 FFT          6  144507-144930  23   +10 Hz RCP 457 kW

1/8 us x 2.0 Hz  127 code, 64 FFT     25  151618-153605  23   +10 Hz RCP 450 kW

1/8 us x 2.0 Hz  127 code, 64 FFT     21  154857-160525  23   +10 Hz RCP 450 kW

CW   4 kHz, 4096 FFT                  79  161900-172219  23   none   RCP 466 kW

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

November 13

CW   4 kHz, 4096 FFT                   4  104535-104827  27   none   RCP

CW bistatic                               104845-113000  27   none   RCP

CW   4 kHz, 4096 FFT                 179  113052-140100  27   none   RCP

1/8 us x 2.0 Hz, 127 code, 64 FFT    180  142917-170053  27   +10 Hz RCP

===================================================================================================

ASTROMETRY
==========

  2003 11 11 14:20:00    R 22.880622    10.0   8560.D6  -14      Benner, L.A.M.
  Correction of -60 us to solution 19 from 10 us and 11 us ranging
  using the VME and PFS datataking systems. 

  2003 11 11 22:00:00    R 22.774376     1.0   8560.D6  -14      Benner, L.A.M.
  Correction of -2 us to solution 21 from 1.0 us and 1/8 usec ranging.
  Echo is about nine 1/8 usec range gates 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







Asteroid Radar Astronomy