Comet 73P/Schwassmann-Wachmann 3 Planning

Background

Comet 73P/Schwassmann-Wachmann 3 was discovered by Arnold Schwassmann and Arno Wachmann
on May 2, 1930 at Hamburg Observatory in Germany. It approached within 0.062 AU six
weeks after its discovery, when it reached 6th magnitude. The comet has an orbital period
of 5.36 years, but due to uncertainties in its orbit, faint visual magnitudes, and relatively
close approaches to Jupiter in 1953 and 1965 that altered its orbit, it wasn't recovered until
1979. In the fall of 1995 the comet's magnitude brightened dramatically, and then in December
of that year, multiple fragments were discovered. In other words, the comet's nucleus split.
Three of the fragments, B, C, and E, were observed again during the subsequent perihelion passage in 2001.

Fragment C was recovered in August, 2005 and fragment B was recovered in January, 2006.
The comet has since split multiple times, and as of early May, about dozens of fragments
been observed. Fragment B has split into at least one large fragment and a cloud of smaller ones.
In contrast, fragment C apparently has not split (yet).

During May, 2006 fragments B, C, and most of the others will approach within 0.079 AU.
Fragment E was last observed in December, 2000. It is predicted to approach within 0.051 AU
several days after the other fragments, when we hope to observe it, presuming, of course,
that it still exists.

Sekanina (1989) estimated a pre-breakup (prior to 1995) diameter of about 2 km.

Toth et al. (2005) estimate that fragment C (prior to recent splitting) had a diameter of 1.3 km.

Fragment C is the largest and (as of early May) is already bright enough to see in binoculars.
Fragment B is also visible in binoculars but it's fainter than fragment C. The other fragments
require a telescope to observe.

These will be combined Goldstone and Arecibo observations.
Goldstone observations are scheduled on May 9, 12, 21, and 23 and Arecibo observations are
scheduled on several dates between April 30-May 22. We know little about the sizes and rotation
periods of the fragments, so it's hard to estimate the SNRs. Comet SW3 could be a moderately strong
radar target at Goldstone, and if we're lucky, we may be able to resolve the nucleus with
coarse-resolution ranging. Alternatively, it could be weak, but in any event, we should be able
to detect it.

The approach by Schwassmann-Wachmann 3 will be the closest by any comet since
comet Sugano-Saigusa-Fujikawa approached within 0.063 AU in June, 1983.

Orbital and Physical Characteristics: Fragment C
 orbit type              Jupiter-family periodic comet
 semimajor axis           3.063 AU     
 eccentricity             0.693        
 inclination             11.4°       
 perihelion distance      0.939 AU     
 aphelion distance        5.186 AU     
 orbital period           5.360 years
 diameter                ~1 km (Z. Sekanina, pers. comm.)
 rotation period          unknown
 pole direction           unknown
 lightcurve amplitude     unknown

Orbital parameters for fragment B are similar.

Last updated: 2006 May 17

Discovery

SNR Calculation

Goldstone Track Assignments

Uncertainties

Setups

Discovery



SEE ABOVE FOR A BRIEF DESCRIPTION OF THE COMET'S DISCOVERY

SNR Calculation


SNR estimates below are for the nucleus of fragment C only; echoes from the comae may be much
stronger or much weaker.

Fragment C
Assumptions
Diameter:       1 km (Zdenek Sekanina, pers. comm.)
Period:         4 h (standard guess for near-Earth asteroids)
Radar albedo:   0.1 (probably an overestimate)

                           ------------GOLDSTONE----------  -------------ARECIBO-----------
                                            Max                              Max
                                    Dat     Run    UTC               Dat     Run    UTC
    Date   RA  Decl Delta  Runs     SNR     SNR   Window    Runs     SNR     SNR   Window

2006  4 22 234  27  0.194    93       2       0  3:53-15:00   20      42      10  4:54- 7:24
2006  4 23 236  28  0.186    97       3       0  3:53-15:00   21      50      12  4:54- 7:24
2006  4 24 237  28  0.178   101       3       0  3:53-15:05   21      59      14  5:00- 7:24
2006  4 25 239  29  0.170   105       4       0  3:53-15:05   22      70      16  5:00- 7:24
2006  4 26 240  29  0.163   110       4       0  4:00-15:11   22      82      19  5:05- 7:24
2006  4 27 242  30  0.155   114       5       1  4:00-15:18   23      99      22  5:12- 7:24
2006  4 28 244  31  0.147   120       6       1  4:00-15:24   23     120      27  5:17- 7:30
2006  4 29 246  31  0.140   125       8       1  4:05-15:30   24     140      32  5:24- 7:30
2006  4 30 249  32  0.133   131       9       1  4:12-15:35   24     170      38  5:30- 7:35
2006  5  1 251  32  0.126   137      12       1  4:17-15:48   25     210      46  5:42- 7:42
2006  5  2 255  33  0.119   177      16       1  4:24-15:54   31     270      55  5:47- 7:47
2006  5  3 258  33  0.113   187      20       2  4:30-16:06   31     330      67  6:00- 7:54
2006  5  4 262  33  0.107   197      25       2  4:42-16:18   32     400      81  6:17- 8:05
2006  5  5 266  34  0.101   207      31       2  4:54-16:36   33     480     100  6:30- 8:18
2006  5  6 271  34  0.096   218      38       3  5:12-16:48   35     590     120  6:47- 8:35
2006  5  7 277  34  0.091   228      46       3  5:30-17:06   37     730     140  7:05- 8:54
2006  5  8 283  33  0.087   237      55       4  5:47-17:23   39     900     170  7:17- 9:11
2006  5  9 289  32  0.084   244      65       5  6:12-17:41   43    1100     190  7:35- 9:35
2006  5 10 296  31  0.081   248      73       5  6:35-18:06   47    1300     212  7:54-10:05
2006  5 11 302  30  0.080   250      79       6  7:05-18:23   51    1500     230  8:11-10:35
2006  5 12 309  28  0.079   248      82       6  7:35-18:41   55    1700     240  8:30-11:00
2006  5 13 316  25  0.079   243      81       6  8:00-18:53   57    1700     240  8:54-11:24
2006  5 14 322  23  0.080   236      77       6  8:30-19:11   58    1600     230  9:11-11:48
2006  5 15 328  20  0.082   226      69       5  8:54-19:23   56    1500     210  9:30-12:11
2006  5 16 333  17  0.084   214      60       5  9:18-19:30   54    1300     190  9:48-12:24
2006  5 17 338  14  0.088   202      51       4  9:41-19:41   52    1100     160 10:00-12:41
2006  5 18 342  12  0.092   190      42       3 10:00-19:48   48     900     140 10:18-12:48
2006  5 19 346  10  0.097   178      34       3 10:18-19:48   43     710     120 10:35-12:54
2006  5 20 349   7  0.102   166      27       2 10:35-19:53   38     550      96 10:48-13:00
2006  5 21 352   5  0.108   155      22       2 10:48-19:53   33     420      80 11:05-13:00
2006  5 22 355   4  0.114   145      17       2 11:00-20:00   29     310      66 11:18-13:00
2006  5 23 357   2  0.120   136      14       1 11:11-20:00   24     210      50 11:30-13:00
2006  5 24 360   1  0.127   104      10       1 11:24-20:00   15     130      37 11:48-12:54
2006  5 25   2  -1  0.134    99       8       1 11:30-20:00   11      82      26 12:00-12:48

Notes:
1. Arecibo SNRs assumed that both klystrons are available
2. SNRs are estimates for echoes from the nucleus of fragment C, which is thought to be the
   largest.
3. Fragment E will approach within 0.051 AU on May 18, when it could be a strong target.
   However, it has not yet been recovered.

Track Assignments



Goldstone tracks

          UT            UT         PST        AST         Duration  Delta
DOY      Date  Fragment TX Window  TX Window  TX Window   (hh:mm)   (AU)
---      ----  -------- ---------  ---------  ---------   -------   ----- 
129     May 09   B      0745-1430  0045-0730  0345-1030     6:45    0.078
                 C      0745-1430  0045-0730  0345-1030     6:45    0.082

132     May 12   B      0745-1430  0045-0730  0345-1030     6:45    0.068 Overlaps Arecibo 0901-0914 UTC
                 C      0745-1430  0045-0730  0345-1030     6:45    0.079 Overlaps Arecibo 0836-1113 UTC
                 G      0745-1430  0045-0730  0345-1030     6:45    0.067 Not observable at Arecibo on May 12

134     May 14   B      1045-1835  0345-1135  0645-1435     7:50    0.067 Overlaps Arecibo 1045-1107 UTC
                 C      1045-1835  0345-1135  0645-1435     7:50    0.081 Overlaps Arecibo 1045-1200 UTC
                 G      1045-1835  0345-1135  0645-1435     7:50    0.065 Observable at Arecibo 0912-1045

141     May 21   B      1035-1840  0335-1140  0635-1440     8:05    0.091 Overlaps Arecibo 
                 C      1045-1840  0345-1140  0645-1440     7:55    0.111 Overlaps Arecibo
                 E      1025-1840  0325-1140  0625-1440     8:15    0.060 This fragment has not been recovered

143     May 23   B      1130-1610  0430-0910  0730-1210     4:40    0.097  CANCELLED
                 C      1130-1610  0430-0910  0730-1210     4:40    0.124  CANCELLED
                 E      1130-1610  0430-0910  0730-1210     4:40    0.070  CANCELLED

Arecibo tracks (proposal R2183, Mike Nolan, John Harmon, et al.)
120     Apr 30   B      0502-0645  2202-2345  0102-0245     1:43    0.136 
                 C      0529-0737  2229-0037  0129-0337     2:08    0.131

121     May 01   B      0512-0644  2212-2344  0112-0244     2:32    0.128 
                 C      0538-0743  2238-0043  0138-0343     2:05    0.124

126     May 06   C      0648-0839  2348-0139  0248-0439     1:51    0.094

127     May 07   C      0705-0859  0005-0159  0305-0459     1:54    0.090

131     May 11   C      0818-1045  0118-0345  0418-0645             0.079

132     May 12   C      0836-1113  0136-0413  0436-0713             0.079

133     May 13   C      0855-1138  0155-0438  0455-0738             0.079
                 B      0856-1020  0156-0320  0456-0620             0.067

134     May 14   B      0906-1107  0206-0407  0506-0707             0.067
                 C      0913-1200  0213-0500  0513-0800             0.080

135     May 15   B      0921-1145  0221-0445  0521-0745             0.068
                 C      0931-1219  0231-0519  0531-0819             0.083

136     May 16   B      0936-1216  0236-0516  0536-0816             0.069
                 C      0949-1234  0249-0534  0549-0834             0.086

137     May 17   B      0953-1239  0253-0539  0553-0839             0.072
                 C      1006-1245  0306-0545  0606-0845             0.090

140     May 20   B      1041-1316  0341-0616  0641-0919             0.085
                 C      1054-1302  0354-0602  0654-0902             0.105

141     May 21   B      1056-1321  0356-0621  0556-0921             0.090
                 C      1108-1303  0408-0603  0708-0903             0.111

142     May 22   B      1110-1322  0410-0622  0710-0922             0.096
                 C      1123-1301  0423-0601  0723-0901             0.117

Uncertainties


FRAGMENT C

From Jon Giorgini, 2006 May 02:

With 1393 optical observations (2006-Jan-2 to 2006-Apr-26),
73P-C solution #30 was computed.  Current apparition data only.  

Formal 3-sigma X-band uncertainties are shown below. Because
it's an active comet with unpredicted outgassing, actual 
errors could exceed these statistical bounds.

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2006-May-08 00:00   4.11606310       2.65      0.003023
 2006-May-09 00:00   4.80625205       2.08      0.002862
 2006-May-10 00:00   5.50859628       1.64      0.002676
 2006-May-11 00:00   6.17635146       1.56      0.002466
 2006-May-12 00:00   6.75694142       1.92      0.002239
 2006-May-13 00:00   7.20307124       2.54      0.002003
 2006-May-14 00:00   7.48422503       3.24      0.001771
 2006-May-15 00:00   7.59327890       3.92      0.001560

From Jon Giorgini, 2006 May 07:

Using the 2 Dopplers and 1 delay from Arecibo, and updating to include the 
latest current optical astrometry, while truncating the data arc to begin
on March 2 (the rough time of an apparent dynamical discontinuity revealed by 
the radar data, which may explain the 6-sigma delay acquisition) such that 
the optical arc is now 1417 measurements (2006-Mar-2 to 2006-May-6), 
73P-C solution #36 was computed.

Formal 3-sigma S/X band uncertainties are below:

 Date__(UT)__HR:MN   POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
 2006-May-07 00:00   .762124203       1.04       3.72      0.000020
 2006-May-08 00:00   .907805037       0.92       3.29      0.000022
 2006-May-09 00:00   1.06857151       0.78       2.79      0.000034
 2006-May-10 00:00   1.23717547       0.63       2.24      0.000053
 2006-May-11 00:00   1.40306793       0.46       1.65      0.000083
 2006-May-12 00:00   1.55373788       0.30       1.07      0.000126
 2006-May-13 00:00   1.67721064       0.19       0.66      0.000182
 2006-May-14 00:00   1.76485875       0.23       0.81      0.000249
 2006-May-15 00:00   1.81326978       0.37       1.32      0.000326

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

FRAGMENT B

With 876 optical obs (2006-Jan-6 to 2006-Apr-25, current apparition 
only), 73P-B solution #18 was computed.

Formal 3-sigma X-band uncertainties are shown below. Because
it's an active comet with unpredicted outgassing, actual
errors could exceed these statistical bounds.

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2006-May-08 00:00   5.48536734       5.87      0.004857
 2006-May-09 00:00   6.65479854       5.05      0.004647
 2006-May-10 00:00   7.98133660       4.13      0.004391
 2006-May-11 00:00   9.41810337       3.15      0.004081
 2006-May-12 00:00   10.8756076       2.23      0.003714
 2006-May-13 00:00   12.2244113       1.78      0.003295
 2006-May-14 00:00   13.3183177       2.25      0.002839
 2006-May-15 00:00   14.0353993       3.28      0.002375

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

FRAGMENT G

From Jon Giorgini, 2006 May 10:

With 394 optical observation (2006-Apr-2 to 2006-May-3) included,
solution #16 was computed. Formal 3-sigma uncertainties are shown
below, but there is evidence of unmodelled dynamics in the optical
residuals. Therefore, these uncertainties could easily be too small.

 Date__(UT)__HR:MN   POS_3sigma  DOP_X-sig  RT_delay-sig
 2006-May-11 00:00   10.1340593     148.38      0.039702
 2006-May-12 00:00   12.7758235     108.72      0.038026
 2006-May-13 00:00   15.5824623      64.46      0.036663
 2006-May-14 00:00   18.3081502      17.26      0.035650
 2006-May-15 00:00   20.6695375      32.48      0.035025

Setups


Plans for the May 21 track
-------------------------

We will start with CW on fragment B using solution 32 using the following setup:

TX polarization           RCP
RCV polarization          LCP
Frequencies:              2
Dwell:                    30 seconds
Bandwidth:              10000 Hz  
Sampling interval:       1000 x 0.1 usec 
VME FFT for PSD files:   1024 for 9.78-Hz resolution

We plan to do fragment B for about 1/2 of the track.  Then we'll use the same
setup on fragment C for the remainder of the track.


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

127 x 64 10-usec single sample

baud            10 usec
code            127
gates           127
FFT             64
CLT             2  (VME)
ncoh            1
bandwidth       787.4 Hz   
resolution      12.30 Hz
TXOFF           +100 Hz -> echo will be centered at +8.1 bins or in bin 32 + 8.1 = 40

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

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

baud            11 usec
code            127
gates           127
PRP             1397
FFT             64
CLT             2 (VME)
ncoh            1
bandwidth       715.8 Hz   
resolution      11.18 Hz
TXOFF           +100 Hz --> echo will be centered at +8.9 bins or in bin 32 + 8.9 = 41

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

127 x 64 7-usec single sample
------------------------------
baud            7 usec
code            127
gates           127
PRP             889
FFT             64
CLT             ??
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/73p/fragmentB/raw/
stealth:/export/data0/rosema/73p/fragmentC/raw/

73P/Schwassmann-Wachmann 3 POINTING:
OSOD and predicts are at Goldstone on stealth: /export/data2/osod/ops/73p-c/PRDX.OUT.s48 FRAGMENT C /PUNCH.OUT.s48 FRAGMENT C /EPH.OUT.s48 FRAGMENT C and /export/data2/osod/ops/73p-b/PRDX.OUT.s32 FRAGMENT B /PUNCH.OUT.s32 FRAGMENT B /EPH.OUT.s32 FRAGMENT B and have been copied to: /export/data0/rosema/73p/fragmentC/support/ and /export/data0/rosema/73p/fragmentB/support/ POINTING FRAGMENT C TX Offsets Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD 2006 05 21 141 110000 353.4279 4.6004 A 110.2 48 2006 05 21 141 120000 353.5401 4.5277 A 110.4 2006 05 21 141 130000 353.6509 4.4553 A 110.7 2006 05 21 141 140000 353.7604 4.3831 A 110.9 2006 05 21 141 150000 353.8690 4.3112 A -0.0034 -0.0022 111.2 2006 05 21 141 160000 353.9770 4.2395 A 111.4 2006 05 21 141 170000 354.0847 4.1680 A 111.7 2006 05 21 141 180000 354.1923 4.0967 A 111.9 2006 05 21 141 190000 354.3003 4.0258 A 112.2 FRAGMENT B 2006 05 21 141 100000 353.9648 9.7314 A 89.8 32 2006 05 21 141 110000 354.0966 9.6262 A 90.0 2006 05 21 141 120000 354.2263 9.5214 A -0.0032 -0.0026 90.2 2006 05 21 141 130000 354.3541 9.4170 AB 90.4 2006 05 21 141 140000 354.4803 9.3129 AB 90.7 2006 05 21 141 150000 354.6051 9.2091 B 90.9 2006 05 21 141 160000 354.7292 9.1055 B -0.0031 -0.0026 91.1 2006 05 21 141 170000 354.8527 9.0022 B 91.4 2006 05 21 141 180000 354.9761 8.8992 B 91.6 2006 05 21 141 190000 355.0997 8.7966 B 91.9
FRAGMENT C PRDX.OUT.s48 TRANSMITTER: STATION #14, RECEIVER: STATION #14 RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL 2006 MAY 21 10:40 110.0874353779 -575083.376 288.6564 4.6247 353.390 17.852 2006 MAY 21 10:50 110.1277638178 -575627.628 291.1443 4.6126 353.409 19.852 2006 MAY 21 11:00 110.1681317193 -576209.385 293.6323 4.6004 353.428 21.845 2006 MAY 21 11:10 110.2085416988 -576827.991 296.1203 4.5883 353.447 23.827 2006 MAY 21 11:20 110.2489963046 -577482.720 298.6084 4.5762 353.466 25.797 2006 MAY 21 11:30 110.2894980514 -578172.776 301.0965 4.5640 353.484 27.753 2006 MAY 21 11:40 110.3300493760 -578897.297 303.5847 4.5519 353.503 29.692 2006 MAY 21 11:50 110.3706526622 -579655.354 306.0729 4.5398 353.522 31.613 2006 MAY 21 12:00 110.4113102316 -580445.956 308.5612 4.5277 353.540 33.513 2006 MAY 21 12:10 110.4520243240 -581268.047 311.0494 4.5157 353.559 35.388 2006 MAY 21 12:20 110.4927971230 -582120.514 313.5378 4.5036 353.577 37.235 2006 MAY 21 12:30 110.5336306927 -583002.185 316.0261 4.4915 353.596 39.051 2006 MAY 21 12:40 110.5745270572 -583911.830 318.5145 4.4794 353.614 40.832 2006 MAY 21 12:50 110.6154881132 -584848.170 321.0030 4.4674 353.633 42.572 2006 MAY 21 13:00 110.6565157055 -585809.869 323.4915 4.4553 353.651 44.268 2006 MAY 21 13:10 110.6976115636 -586795.549 325.9800 4.4433 353.669 45.912 2006 MAY 21 13:20 110.7387772991 -587803.781 328.4685 4.4312 353.688 47.499 2006 MAY 21 13:30 110.7800144516 -588833.095 330.9571 4.4192 353.706 49.021 2006 MAY 21 13:40 110.8213244560 -589881.980 333.4457 4.4072 353.724 50.470 2006 MAY 21 13:50 110.8627086105 -590948.887 335.9343 4.3952 353.742 51.838 2006 MAY 21 14:00 110.9041681430 -592032.234 338.4230 4.3831 353.760 53.115 2006 MAY 21 14:10 110.9457041397 -593130.405 340.9117 4.3711 353.779 54.292 2006 MAY 21 14:20 110.9873175723 -594241.757 343.4004 4.3591 353.797 55.356 2006 MAY 21 14:30 111.0290093263 -595364.620 345.8891 4.3471 353.815 56.299 2006 MAY 21 14:40 111.0707801396 -596497.303 348.3779 4.3351 353.833 57.108 2006 MAY 21 14:50 111.1126306407 -597638.096 350.8667 4.3232 353.851 57.773 2006 MAY 21 15:00 111.1545613278 -598785.270 353.3555 4.3112 353.869 58.285 2006 MAY 21 15:10 111.1965726072 -599937.088 355.8443 4.2992 353.887 58.637 2006 MAY 21 15:20 111.2386647332 -601091.800 358.3331 4.2873 353.905 58.823 2006 MAY 21 15:30 111.2808378471 -602247.651 0.8219 4.2753 353.923 58.840 2006 MAY 21 15:40 111.3230919574 -603402.883 3.3108 4.2633 353.941 58.688 2006 MAY 21 15:50 111.3654269790 -604555.740 5.7997 4.2514 353.959 58.368 2006 MAY 21 16:00 111.4078426737 -605704.468 8.2886 4.2395 353.977 57.887 2006 MAY 21 16:10 111.4503386812 -606847.322 10.7774 4.2275 353.995 57.251 2006 MAY 21 16:20 111.4929145484 -607982.565 13.2663 4.2156 354.013 56.469 2006 MAY 21 16:30 111.5355696715 -609108.475 15.7552 4.2037 354.031 55.551 2006 MAY 21 16:40 111.5783033365 -610223.349 18.2441 4.1918 354.049 54.509 2006 MAY 21 16:50 111.6211147104 -611325.502 20.7330 4.1799 354.067 53.352 2006 MAY 21 17:00 111.6640028333 -612413.273 23.2220 4.1680 354.085 52.092 2006 MAY 21 17:10 111.7069666592 -613485.028 25.7109 4.1561 354.103 50.739 2006 MAY 21 17:20 111.7500049991 -614539.161 28.1998 4.1442 354.121 49.302 2006 MAY 21 17:30 111.7931165623 -615574.102 30.6887 4.1323 354.138 47.791 2006 MAY 21 17:40 111.8362999594 -616588.314 33.1776 4.1205 354.156 46.213 2006 MAY 21 17:50 111.8795536646 -617580.300 35.6665 4.1086 354.174 44.575 2006 MAY 21 18:00 111.9228760785 -618548.604 38.1554 4.0967 354.192 42.885 2006 MAY 21 18:10 111.9662655010 -619491.813 40.6443 4.0849 354.210 41.149 2006 MAY 21 18:20 112.0097201149 -620408.563 43.1331 4.0731 354.228 39.370 2006 MAY 21 18:30 112.0532380190 -621297.539 45.6220 4.0612 354.246 37.555 FRAGMENT B PRDX.OUT.s32 2006 MAY 21 10:30 89.8686450860 -537537.300 285.5087 9.6787 354.031 18.194 2006 MAY 21 10:40 89.9063423147 -538096.543 287.9936 9.6612 354.053 20.208 2006 MAY 21 10:50 89.9440800580 -538693.368 290.4786 9.6437 354.075 22.220 2006 MAY 21 11:00 89.9818609460 -539327.223 292.9636 9.6262 354.097 24.228 2006 MAY 21 11:10 90.0196875388 -539997.485 295.4487 9.6087 354.118 26.231 2006 MAY 21 11:20 90.0575623648 -540703.464 297.9339 9.5912 354.140 28.227 2006 MAY 21 11:30 90.0954879015 -541444.397 300.4191 9.5738 354.162 30.215 2006 MAY 21 11:40 90.1334665802 -542219.460 302.9043 9.5563 354.183 32.192 2006 MAY 21 11:50 90.1715007624 -543027.758 305.3896 9.5389 354.205 34.156 2006 MAY 21 12:00 90.2095927262 -543868.337 307.8750 9.5214 354.226 36.105 2006 MAY 21 12:10 90.2477447178 -544740.179 310.3604 9.5040 354.248 38.037 2006 MAY 21 12:20 90.2859588821 -545642.207 312.8459 9.4866 354.269 39.948 2006 MAY 21 12:30 90.3242372956 -546573.285 315.3314 9.4692 354.290 41.835 2006 MAY 21 12:40 90.3625819535 -547532.222 317.8170 9.4518 354.312 43.694 2006 MAY 21 12:50 90.4009947748 -548517.774 320.3026 9.4344 354.333 45.522 2006 MAY 21 13:00 90.4394775613 -549528.645 322.7883 9.4170 354.354 47.312 2006 MAY 21 13:10 90.4780320598 -550563.490 325.2740 9.3996 354.375 49.061 2006 MAY 21 13:20 90.5166598932 -551620.920 327.7598 9.3823 354.396 50.760 2006 MAY 21 13:30 90.5553625946 -552699.499 330.2456 9.3649 354.417 52.404 2006 MAY 21 13:40 90.5941415950 -553797.753 332.7314 9.3476 354.438 53.983 2006 MAY 21 13:50 90.6329982210 -554914.168 335.2173 9.3302 354.459 55.488 2006 MAY 21 14:00 90.6719336916 -556047.196 337.7032 9.3129 354.480 56.909 2006 MAY 21 14:10 90.7109491161 -557195.255 340.1891 9.2956 354.501 58.234 2006 MAY 21 14:20 90.7500454920 -558356.737 342.6751 9.2783 354.522 59.449 2006 MAY 21 14:30 90.7892237030 -559530.003 345.1611 9.2610 354.543 60.541 2006 MAY 21 14:40 90.8284845172 -560713.395 347.6472 9.2437 354.564 61.495 2006 MAY 21 14:50 90.8678285856 -561905.231 350.1333 9.2264 354.584 62.296 2006 MAY 21 15:00 90.9072564407 -563103.817 352.6194 9.2091 354.605 62.932 2006 MAY 21 15:10 90.9467684865 -564307.440 355.1055 9.1918 354.626 63.388 2006 MAY 21 15:20 90.9863650346 -565514.380 357.5916 9.1745 354.647 63.657 2006 MAY 21 15:30 91.0260462476 -566722.908 0.0778 9.1573 354.667 63.731 2006 MAY 21 15:40 91.0658121761 -567931.292 2.5640 9.1400 354.688 63.610 2006 MAY 21 15:50 91.1056627398 -569137.800 5.0502 9.1227 354.709 63.296 2006 MAY 21 16:00 91.1455977653 -570340.700 7.5364 9.1055 354.729 62.795 2006 MAY 21 16:10 91.1856169205 -571538.268 10.0227 9.0883 354.750 62.118 2006 MAY 21 16:20 91.2257197901 -572728.789 12.5089 9.0710 354.770 61.278 2006 MAY 21 16:30 91.2659058016 -573910.559 14.9952 9.0538 354.791 60.288 2006 MAY 21 16:40 91.3061743011 -575081.891 17.4814 9.0366 354.812 59.163 2006 MAY 21 16:50 91.3465244794 -576241.117 19.9677 9.0194 354.832 57.917 2006 MAY 21 17:00 91.3869554489 -577386.589 22.4540 9.0022 354.853 56.565 2006 MAY 21 17:10 91.4274661694 -578516.685 24.9403 8.9850 354.873 55.119 2006 MAY 21 17:20 91.4680555166 -579629.813 27.4265 8.9679 354.894 53.590 2006 MAY 21 17:30 91.5087222553 -580724.409 29.9128 8.9507 354.914 51.989 2006 MAY 21 17:40 91.5494650139 -581798.945 32.3991 8.9335 354.935 50.326 2006 MAY 21 17:50 91.5902823526 -582851.930 34.8854 8.9164 354.955 48.607 2006 MAY 21 18:00 91.6311726999 -583881.912 37.3717 8.8992 354.976 46.841 2006 MAY 21 18:10 91.6721343936 -584887.482 39.8579 8.8821 354.997 45.033 2006 MAY 21 18:20 91.7131656744 -585867.276 42.3442 8.8650 355.017 43.189 2006 MAY 21 18:30 91.7542646889 -586819.978 44.8304 8.8479 355.038 41.314 2006 MAY 21 18:40 91.7954294932 -587744.323 47.3167 8.8308 355.058 39.410

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

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/73PSW3/html/73PSW3.planning.html

Asteroid Radar Astronomy