38071 (1999 GU3) Planning

Near-Earth asteroid 38071 (1999 GU3) approaches within 0.082 AU of Earth on April 20, 2002. It will be a strong radar target. 1999 GU3 was discovered on April 10, 1999 by the MIT/Lincoln-Laboratory (LINEAR) search program. We observed it at Goldstone during the discovery apparition and the results were published in the December, 2000 issue of the journal Icarus. 1999 GU3 has been classified as a Potentially Hazardous Asteroid by the Minor Planet Center.

The 1999 echoes yielded a bandwidth of only 0.4 Hz but did not resolve the object in range. In 2002 we plan to image the asteroid at resolutions as high as 19 m per pixel at Goldstone and 7.5 m per pixel at Arecibo. Lightcurves obtained by Petr Pravec and colleagues at Ondrejov Observatory in the Czech Republic indicated that 1999 GU3 is a very slow rotator with a period of about 9 days. The very narrow bandwidth we obtained is consistent with that rotation period. The bandwidth and rotation period suggest that 1999 GU3 is close to 0.6 km in diameter and the substantial lightcurve amplitude also suggests that GU3 is elongated. The slow rotation period hints that 1999 GU3 may be a non-principal axis rotator (like Toutatis and 1999 JM8) and it indicates that rotational smear during a each track will probably be small.

This will be a multi-telescope campaign involving Goldstone DSS-14 (70 m), DSS-13 (34 m), Arecibo (305 m), and Greenbank (100 m). Monostatic observations are scheduled at Arecibo on April 7-12 and at Goldstone on April 27 and 28. Bistatic Arecibo->Greenbank observations are planned on April 13 and 14. Bistatic Goldstone->Greenbank observations are planned on April 21-23. On April 21-23 we will also receive echoes at DSS-13.

Update on 2002 April 16:

Arecibo observations yielded echoes on six days between April 8-15. The bandwidth is only about 0.06 Hz at S-band (0.22 Hz at X-band), which is about 1/2 of the bandwidth that we expected based on the Goldstone detection three years ago. The Arecibo images show a visible range extent that varied from about 240 meters to about 100 meters between the beginning and end of the Arecibo observations. Thus, 1999 GU3 is elongated, which is consistent with expectations from the amplitude of its lightcurve during the 1999 and 2002 apparitions. The asteroid is significantly smaller than the estimate above of ~600 meters, which probably accounts for signal-to-noise ratios that are lower than anticipated. The Arecibo echoes have a circular polarization ratio SC/OC ~ 0.4, which is indicative of a rough near-surface relative to those of other radar-detected near-Earth asteroids and a ratio that is consistent with the the one obtained at X-band in 1999.

Lightcurves obtained by Petr Pravec, Peter Kusnirak, and Lenka Sarounova at Ondrejov Observatory in the Czech Republic this spring have confirmed the 9 day rotation period they obtained from lightcurves three years ago.

A selection of Arecibo delay-Doppler images is available at: http://www.naic.edu/~radarusr/1999GU3pre/

We detected echoes using the bistatic Arecibo->Greenbank configuration. Bistatic delay-Doppler images are still being processed.


Background


Discovery




M.P.E.C. 1999-G22                                Issued 1999 Apr. 12, 18:46 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.

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

                                   1999 GU3

Observations:
     J99G03U* C1999 04 10.23445 13 39 48.53 +24 39 34.7          15.2        704
     J99G03U  C1999 04 10.25365 13 40 31.06 +24 45 45.8                      704
     J99G03U  C1999 04 10.27294 13 41 13.84 +24 51 58.1                      704
     J99G03U  C1999 04 10.29202 13 41 56.21 +24 57 58.6                      704
.
.
.

Observer details:
046 Klet.  Observers J. Ticha, M. Tichy.  Measurer M. Tichy.
    0.57-m f/5.2 reflector + CCD.
151 Eschenberg Observatory, Winterthur.  Observer M. Griesser.  0.25-m f/8.0
    reflector + CCD.
402 Dynic Astronomical Observatory.  Observer A. Sugie.  0.60-m f/3.7 reflector
    + CCD.
422 Loomberah.  Observer G. J. Garradd.  0.45-m f/5.4 reflector + CCD.
704 Lincoln Laboratory ETS, New Mexico.  Observers M. Blythe, F. Shelly,
    M. Bezpalko, M. Elowitz.  Measurers J. Stuart, H. Viggh, R. Sayer.  1.0-m
    f/2.15 reflector + CCD.
713 Thornton.  Observer R. A. Koff.  0.20-m f/10 Schmidt-Cassegrain + CCD.
719 Etscorn Observatory.  Observer D. A. Klinglesmith III.  0.355-m
    Schmidt-Cassegrain + CCD.
732 Oaxaca.  Observer J. Roe.  0.25-m f/3.4 reflector + CCD.
734 Farpoint Observatory.  Observers G. Hug, G. Bell.  0.30-m
    Schmidt-Cassegrain + CCD.
739 Sunflower Observatory, Olathe.  Observer L. Robinson.  0.25-m
    Schmidt-Cassegrain + CCD.
758 BCC Observatory, Cocoa.  Observer I. P. Griffin.  0.30-m f/5 Maksutov
    + CCD.

Orbital elements:
1999 GU3                                                             PHA 0.030A
Epoch 1999 Mar. 23.0 TT = JDT 2451260.5                 Marsden
M 352.82836              (2000.0)            P               Q
n   0.32420763     Peri.    8.63580     -0.91187305     +0.40603526
a   2.0985560      Node   195.74004     -0.38861092     -0.90119212
e   0.5109189      Incl.   12.81960     -0.13217072     -0.15161838
P   3.04           H   19.1           G   0.15
From 78 observations 1999 Apr. 10-12.
.
.
.
Brian G. Marsden             (C) Copyright 1999 MPC           M.P.E.C. 1999-G22


SNR Calculation

 
Below are SNR estimates at Goldstone and Arecibo assuming P = 216 h, D = 0.64 km,
a radar albedo of 0.1, and assuming nominal system parameters.  Dates of scheduled 
observations are highlighted in bold.

Goldstone->Greenbank SNRs/RTT should be about double those shown for monostatic Goldstone 
observations and about 10x those for bistatic DSS-14->DSS-13 observations.  
Arecibo->Greenbank SNRs/RTT should be about 1/3 of those shown for monostatic
Arecibo observations.   

In the tables below, A = Arecibo, G = Goldstone, and GB = Greenbank.

                           ------------GOLDSTONE----------  -------------ARECIBO-----------
                                            Max                              Max
                                    Dat     Run    UTC               Dat     Run    UTC
    Date   RA  Decl Delta  Runs     SNR     SNR   Window    Runs     SNR     SNR   Window
2002  3 30 119  -3  0.138    94      26       3 23:06-31:30    0       0       0      -
2002  3 31 120  -1  0.134    98      29       3 23:00-31:30    8     238      87 23:41-24:11
2002  4  1 121  -0  0.130   102      34       4 22:53-31:36   13     383     116 23:23-24:23
2002  4  2 121   1  0.125   106      39       4 22:48-31:36   17     546     148 23:11-24:36
2002  4  3 122   3  0.121   110      44       5 22:41-31:41   21     737     185 23:00-24:41
2002  4  4 123   4  0.118   142      56       5 22:41-31:41   29    1042     215 22:53-24:48
2002  4  5 124   6  0.114   148      65       6 22:36-31:48   33    1276     242 22:48-24:53
2002  4  6 125   8  0.110   155      75       7 22:30-31:53   37    1532     271 22:41-25:00
2002  4  7 126  10  0.107   163      86       7 22:23-32:00   40    1809     304 22:36-25:06 MONOSTATIC A
2002  4  8 127  12  0.103   171      99       8 22:18-32:06   43    2115     341 22:36-25:11 MONOSTATIC A
2002  4  9 128  14  0.100   179     113       9 22:11-32:12   46    2452     381 22:36-25:11 MONOSTATIC A
2002  4 10 130  16  0.097   188     129      10 22:11-32:17   48    2805     424 22:30-25:18 MONOSTATIC A
2002  4 11 131  19  0.094   197     146      11 22:06-32:30   50    3176     471 22:36-25:18 MONOSTATIC A
2002  4 12 133  21  0.091   206     164      13 22:00-32:36   52    3552     519 22:36-25:23 MONOSTATIC A
2002  4 13 135  24  0.089   216     184      14 22:00-32:47   52    3883     569 22:41-25:23 BISTATIC A->GB
2002  4 14 137  27  0.087   226     203      15 21:53-33:00   51    4144     618 22:48-25:23 BISTATIC A->GB
2002  4 15 139  30  0.085   235     223      16 21:53-33:12   48    4260     665 23:00-25:23
2002  4 16 142  33  0.084   245     241      17 21:48-33:30   43    4102     707 23:18-25:18
2002  4 17 144  36  0.083   254     257      18 21:48-33:42   33    3231     627 23:41-25:11
2002  4 18 147  39  0.082   262     270      19 21:48-34:00   12    1555     457      -
2002  4 19 151  41  0.081   270     280      19 21:53-34:17    0       0       0      -
2002  4 20 155  44  0.081   278     285      19 21:53-34:36    0       0       0      -
2002  4 21 159  47  0.082   284     285      19 22:00-35:00    0       0       0      -      BISTATIC G->GB
2002  4 22 163  49  0.082   289     280      18 22:00-35:23    0       0       0      -      BISTATIC G->GB
2002  4 23 168  51  0.083   293     270      17 22:11-35:47    0       0       0      -      BISTATIC G->GB
2002  4 24 174  53  0.085   295     256      16 22:18-36:12    0       0       0      -
2002  4 25 179  55  0.086   296     239      15 22:30-36:36    0       0       0      -
2002  4 26 185  56  0.088   295     220      14 22:41-37:00    0       0       0      -
2002  4 27 190  57  0.091   292     200      13 23:00-37:23    0       0       0      -      MONOSTATIC G
2002  4 28 196  58  0.093   287     180      12 23:11-37:47    0       0       0      -      MONOSTATIC G
2002  4 29 202  58  0.096   281     160      11 23:30-38:06    0       0       0      -
2002  4 30 207  58  0.099   273     142      10 23:48-38:23    0       0       0      -


Arecibo Track Assignments

                        UTC              PDT           AST/EDT
UTC        UTC    TRANSMIT WINDOW  TRANSMIT WINDOW TRANSMIT WINDOW
2002      April      START STOP       START STOP      START STOP
DOY       Date       hhmm-hhmm        hhmm-hhmm       hhmm-hhmm    Duration

097-098   07-08      2232-0109        1532-1809       1832-2109     02:37
098-099   08-09      2231-0113        1531-1813       1831-2113     02:42
099-100   09-10      2230-0117        1530-1817       1830-2117     02:47
100-101   10-11      2231-0120        1531-1820       1831-2120     02:49
101-102   11-12      2234-0123        1534-1823       1834-2123     02:49
102-103   12-13      2239-0124        1539-1824       1839-2124     02:45
103-104   13-14      2247-0125        1547-1825       1847-2125     02:38
104-105   14-15      2259-0124        1559-1824       1859-2124     02:25

105-106   15-16      2315-0120        1615-1820       1915-2120     02:05
106-107   16-17      2339-0110        1639-1810       1939-2110     01:31

April 15 and 16 are backup dates in the event that a World Day  
postpones the observations on April 13 or 14. 

 

Goldstone Track Assignments

                        UTC              PDT          AST/EDT
UTC        UTC    TRANSMIT WINDOW  TRANSMIT WINDOW TRANSMIT WINDOW
2002      April      START STOP       START STOP      START STOP
DOY       Date       hhmm-hhmm        hhmm-hhmm       hhmm-hhmm    Duration

111-112   21-22      2255-0820        1555-0120       1855-0420     09:25
112-113   22-23      2310-0900        1610-0200       1910-0500     09:50
113-114   23-24      2345-0935        1645-0235       1945-0535     09:50
117       27         0130-1130        1830-0430       2130-0730     10:00
118       28         0045-0605        1745-2305       2045-0205     05:20

 

Greenbank Track Assignments

                        UTC              PDT          AST/EDT
UTC        UTC    TRANSMIT WINDOW  TRANSMIT WINDOW TRANSMIT WINDOW
2002      April      START STOP       START STOP      START STOP               Bistatic
DOY       Date       hhmm-hhmm        hhmm-hhmm       hhmm-hhmm    Duration  Configuration

103-104   13-14      2247-0125        1547-1825       1847-2125     02:38       A->GB
104-105   14-15      2259-0124        1559-1824       1859-2124     02:25       A->GB
111-112   21-22      2255-0820        1555-0120       1855-0420     09:25       G->GB
112-113   22-23      2310-0900        1610-0200       1910-0500     09:50       G->GB
113-114   23-24      2345-0935        1645-0235       1945-0535     09:50       G->GB


MASTER SCHEDULE

DOY 097 098 099 100 101 102 103 104 111 112 113 116 117 UTC AST/EDT PDT Apr 07 08 09 10 11 12 13 14 21 22 23 26 27 2200 18:00 15:00 Sun Mon Tue Wed Thu 15 eve eve eve eve eve Fri Sat 30 A A A A A eve eve Sun Sun 45 A A A A A A AGB eve aft Mon 2300 19:00 16:00 A A A A A A AGB AGB GGB aft 15 A A A A A A AGB AGB GGB GGB Tue 30 A A A A A A AGB AGB GGB GGB aft 45 A A A A A A AGB AGB GGB GGB GGB 0000 20:00 17:00 A A A A A A AGB AGB GGB GGB GGB 15 A A A A A A AGB AGB GGB GGB GGB Sat 30 A A A A A A AGB AGB GGB GGB GGB aft 45 A A A A A A AGB AGB GGB GGB GGB G 0100 21:00 18:00 A A A A A A AGB AGB GGB GGB GGB Fri G 15 A A A A A A AGB AGB GGB GGB GGB eve G 30 Sun Mon Tue Wed A A AGB AGB GGB GGB GGB G G 45 eve eve eve eve Thu Fri Sat Sun GGB GGB GGB G G 0200 22:00 19:00 eve eve eve eve GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0300 23:00 20:00 GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0400 00:00 21:00 GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0500 01:00 22:00 GGB GGB GGB G G 15 GGB GGB GGB G G 30 GGB GGB GGB G G 45 GGB GGB GGB G G 0600 02:00 23:00 GGB GGB GGB G G 15 GGB GGB GGB G Sat 30 GGB GGB GGB G pm 45 GGB GGB GGB G 0700 03:00 00:00 GGB GGB GGB G 15 GGB GGB GGB G 30 GGB GGB GGB G 45 GGB GGB GGB G 0800 04:00 01:00 GGB GGB GGB G 15 GGB GGB GGB G 30 Mon GGB GGB G 45 am GGB GGB G 0900 05:00 02:00 GGB GGB G 15 Tue GGB G 30 am GGB G 45 Wed G 1000 06:00 03:00 am G 15 G 30 G 45 G 1100 07:00 04:00 G 15 G 30 G 45 Sat 1200 08:00 05:00 am DOY 098 099 100 101 102 103 104 105 112 113 114 117 118 UTC AST/EDT PDT Apr 08 09 10 11 12 13 14 15 22 23 24 27 28

Sky Motion

Sky motion between 0 h UTC on April 8-28 is about 65 degrees.

Uncertainties


From Horizons (2002 March 19):

Using 276 optical observations from April 11, 1999-March, 2002 and two Dopplers
from April, 1999: 
*******************************************************************************************************
 Date__(UT)__HR:MN     R.A._(a-appar)_DEC.         delta POS_3sigma  DOP_S-sig  DOP_X-sig  RT_delay-sig
*******************************************************************************************************
$$SOE
 2002-Apr-07 00:00 *   125.74396   9.84933  0.1065645728 1.19479148       0.28       1.00      0.001850
 2002-Apr-08 00:00 *   126.89513  11.89153  0.1031689242 1.26485638       0.28       1.00      0.001848
 2002-Apr-09 00:00 *   128.15885  14.06064  0.0999398069 1.35943627       0.28       1.00      0.001842
 2002-Apr-10 00:00 *   129.54813  16.35919  0.0968964366 1.48114531       0.28       1.00      0.001831
 2002-Apr-11 00:00 *m  131.07781  18.78721  0.0940593245 1.63125056       0.28       1.00      0.001815
 2002-Apr-12 00:00 *m  132.76480  21.34142  0.0914500409 1.80946244       0.28       1.00      0.001792
 2002-Apr-13 00:00 *m  134.62827  24.01428  0.0890908475 2.01385377       0.28       1.01      0.001763
 2002-Apr-14 00:00 *m  136.68979  26.79308  0.0870041788 2.24084930       0.29       1.02      0.001725
 2002-Apr-15 00:00 *m  138.97337  29.65905  0.0852119714 2.48526564       0.29       1.03      0.001680
 2002-Apr-16 00:00 *m  141.50529  32.58674  0.0837348538 2.74043300       0.29       1.05      0.001627
 2002-Apr-17 00:00 *m  144.31359  35.54371  0.0825912402 2.99845473       0.30       1.06      0.001565
 2002-Apr-18 00:00 *m  147.42705  38.49087  0.0817963997 3.25064705       0.30       1.08      0.001494
 2002-Apr-19 00:00 *m  150.87341  41.38329  0.0813615953 3.48815582       0.31       1.10      0.001416
 2002-Apr-20 00:00 *m  154.67662  44.17193  0.0812933993 3.70268651       0.31       1.11      0.001332
 2002-Apr-21 00:00 *m  158.85287  46.80591  0.0815932775 3.88723293       0.32       1.13      0.001241
 2002-Apr-22 00:00 *m  163.40551  49.23542  0.0822575059 4.03666971       0.32       1.14      0.001147
 2002-Apr-23 00:00 *m  168.31937  51.41507  0.0832774311 4.14809858       0.32       1.16      0.001051
 2002-Apr-24 00:00 *m  173.55549  53.30729  0.0846400341 4.22089675       0.33       1.17      0.000954
 2002-Apr-25 00:00 *m  179.04838  54.88547  0.0863287151 4.25648837       0.33       1.18      0.000857
 2002-Apr-26 00:00 *   184.70738  56.13630  0.0883241962 4.25791693       0.33       1.19      0.000764
 2002-Apr-27 00:00 *   190.42357  57.06082  0.0906054387 4.22932274       0.34       1.20      0.000674
 2002-Apr-28 00:00 *   196.08131  57.67378  0.0931504955 4.17542329       0.34       1.21      0.000588

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

From Jon Giorgini (2002 April 5):

With 287 optical obs spanning Apr 11, 1999 to Apr 4, 2002, 2 Doppler 
measurements on Apr 17, 1999, numbered asteroid (38071) 1999 GU3 
solution #15 was determined. 3-sigma S-band uncertainties are below.

      DATE          Pointing  S-band Dop     Delay  
                      (")         Hz         (sec)  
-----------------  ---------  ----------  ----------
 7-APR-2002 00:00      0.676      <1.000    0.001142
 9-APR-2002 00:00      0.771      <1.000    0.001139
11-APR-2002 00:00      0.934      <1.000    0.001126
13-APR-2002 00:00      1.167      <1.000    0.001098
15-APR-2002 00:00      1.457      <1.000    0.001052
17-APR-2002 00:00      1.773      <1.000    0.000986

OSOD, delay, Doppler and pointing predict files have been established 
at Arecibo:

  utuado:/share/trabuco4/jplephem/osod/ops/1999gu3/user_files/

Due to the low uncertainties, I do not expect a further update prior to 
the experiment.

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

From Jon Giorgini (2002 April 17):

  With 337 optical observations spanning 11 Apr 1999 to
15 Apr 2002, 2 delay and 3 Doppler, solution #21 3-sigma
X-band uncertainties are as follows:

      DATE          Pointing  X-band Dop     Delay  
                      (")         Hz         (sec)  
-----------------  ---------  ----------  ----------
19-APR-2002 00:00      0.200       0.508    0.000045
20-APR-2002 00:00      0.197       0.538    0.000053
21-APR-2002 00:00      0.195       0.564    0.000061
22-APR-2002 00:00      0.194       0.588    0.000069
23-APR-2002 00:00      0.193       0.609    0.000077
24-APR-2002 00:00      0.194       0.626    0.000085
25-APR-2002 00:00      0.196       0.640    0.000093
26-APR-2002 00:00      0.198       0.652    0.000101
27-APR-2002 00:00      0.202       0.660    0.000109
28-APR-2002 00:00      0.207       0.666    0.000116

  Predicts for Apr 21-23 (only) are on Intruder. XMIT is
for DSS-14 -> Greenbank (constant rcv freq of 8560 MHz).
RCV is for DSS-14 reception of its transmission for 
Greenbank.

  There are rise/set problems that mean post Apr 23
predicts will have to be generated separately (and later).




Setups


During the first Goldstone track on April 21 (!), the strategy is 
to move from cw to hi-resolution bistatic (DSS-14->GBT and DSS-14->DSS-13)
imaging as soon as possible.

We're going to start with monostatic cw to verify that we have echoes, to
measure a Doppler correction, and to resolve the echoes in Doppler frequency.  
Then we'll update the range using 10 usec and 1 usec setups.  

After that we'll do bistatic Goldstone->Greenbank (and DSS-14->DSS-13) CW for several minutes 
to verify that we have echoes at Greenbank.  This may require using much
larger transmit offsets (e.g. 500 Hz) than we normally use for monostatic 
Goldstone observations.  We want to devote the rest of the track to 1/8 usec Goldstone->Greenbank
imaging.  We will also receive 1/8 usec echoes at DSS-13 while we are receiving at
Greenbank.

Starting monostatic CW setup for the first track:

 TX  polarization             RCP
 RCV polarization             both
 Frequencies:                 2
 Dwell:                       30 seconds
 Bandwidth:                   2000 Hz
 Sampling interval:           500 x 0.1 usec
 VME FFT for PSD files:	      16384 for 0.12207-Hz resolution

Possible ranging setups to match-filter the echo in Doppler:
255 code x 256 FFT single sample:
---------------------------------------------------------------------------
Modified from TU1XS80  
baud		10 usec
code		255
gates		255
FFT		256
CLT		11
ncoh		15
bandwidth   	26.14 Hz   
resolution	0.102 Hz
TXOFF		TBD
incoh sums	1 => 9.792 sec/record (we'll get 6-7 records/run)
---------------------------------------------------------------------------
TU1XS08
baud		1 usec
code		255
gates		255
FFT		256
CLT		34
ncoh		153
bandwidth   	25.6 Hz   
resolution	0.100 Hz
TXOFF		TBD
incoh sums	1 => 10 sec/record  (we'll get 6-7 records/run)
 


STANDARD 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		TBD
incoh sums	64 => 10.4 sec/record
---------------------------------------------------------------------------
127 x 64 11-usec single sample.

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
-------------------------------------------------------------------------
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 
____________________________________________________________________
RANGING SETUPS from Toutatis 1992: (code=255, FFT=256, 1 channel)
____________________________________________________________________
Setup     Baud   NACC       bandwidth  resolution   1/res'n   nom
                               Hz         Hz          sec     gate
____________________________________________________________________

TU1XS01   0.125    123      255.06      0.9963        1.00    34
                   890       35.25      0.1377        7.26
                  1471       21.327     0.08331      12.00
                  2210       14.196     0.05545      18.03
                  2942       10.664     0.04166      24.01
                  3309        9.4810    0.03704      27.00
                  3700        8.4791    0.03312      30.19
                  7400        4.2395    0.01656      60.38
                 14800        2.1198    0.00828     120.77
                     
TU1XS02   0.25     123      127.5       0.498    
TU1XS04   0.500    307       25.5       0.100      
TU1XS08   1.000    153       25.6       0.100      
TU1XS16   2.000      4      490.2       1.915     
TU1XS32   4.000      2      490.2       1.915      
TU1XS33   4.125      2      475.3       1.857      
TU1XS80  10.000      1      392.2       1.532                 11      
TU1XS88  11.000      1      356.5       1.393                 11 



Instructions

NOTE: Data should be moved to the appropriate subdirectories in intruder:/d1/1999GU3/raw/

1999 GU3 POINTING:


For these observations, we need the following files:

            PRDX.OUT.14-14.Apr23-30.s27
           PUNCH.OUT.14-14.Apr23-30.s27

These files are created in:  intruder:/export/data2/osod/ops/1999gu3/

and are copied to:           intruder:/d1/1999GU3/support/

POINTING  

Date (UTC) DOY hhmmss   RA      Dec   MACRO  TX Offsets     RTT  OSOD
                                            LHA      Dec     
2002 04 21 111 230000 163.2104 49.1342 A                    82.1  21
2002 04 22 112 000000 163.4054 49.2354 A                    82.1
2002 04 22 112 010000 163.5988 49.3358 A  -0.0044   0.0022  82.1
2002 04 22 112 020000 163.7907 49.4350 A                    82.1
2002 04 22 112 030000 163.9816 49.5329 AB                   82.2
2002 04 22 112 040000 164.1720 49.6293  B                   82.2
2002 04 22 112 050000 164.3625 49.7240  B                   82.3
2002 04 22 112 060000 164.5537 49.8170  B -0.0044   0.0021  82.3
2002 04 22 112 070000 164.7463 49.9084  B                   82.3
2002 04 22 112 080000 164.9410 49.9983  B                   82.4
2002 04 22 112 090000 165.1380 50.0869  B                   82.4

2002 04 22 112 230000 168.1091 51.3249  A                   83.1  25
2002 04 23 113 000000 168.3192 51.4150  A                   83.1
2002 04 23 113 010000 168.5274 51.5043  A  -0.0048   0.0021 83.2
2002 04 23 113 020000 168.7340 51.5925  A                   83.2
2002 04 23 113 030000 168.9393 51.6793  AB                  83.2
2002 04 23 113 040000 169.1438 51.7645   B                  83.3
2002 04 23 113 050000 169.3482 51.8480   B                  83.3
2002 04 23 113 060000 169.5530 51.9298   B -0.0047   0.0018 83.4
2002 04 23 113 070000 169.7591 52.0098   B                  83.5
2002 04 23 113 080000 169.9669 52.0882   B                  83.5
2002 04 23 113 090000 170.1770 52.1652   B                  83.6

2002 04 23 113 230000 173.3322 53.2296 A                    84.4  27
2002 04 24 114 000000 173.5553 53.3073 A                    84.5
2002 04 24 114 010000 173.7764 53.3841 A  -0.0051   0.0018  84.5
2002 04 24 114 020000 173.9954 53.4598 AB                   84.6
2002 04 24 114 030000 174.2130 53.5342 AB                   84.6
2002 04 24 114 040000 174.4294 53.6070  B                   84.7
2002 04 24 114 050000 174.6454 53.6780  B                   84.8
2002 04 24 114 060000 174.8616 53.7473  B -0.0051   0.0016  84.8
2002 04 24 114 070000 175.0787 53.8147  B                   84.9
2002 04 24 114 080000 175.2972 53.8805  B                   85.0
2002 04 24 114 090000 175.5179 53.9447  B                   85.1
2002 04 24 114 100000 175.7411 54.0076  B                   85.1

2002 04 27 117 010000 190.6602 57.0972 A                    90.5  27
2002 04 27 117 020000 190.8943 57.1328 A                    90.6
2002 04 27 117 030000 191.1260 57.1673 A  -0.0058   0.0009  90.7
2002 04 27 117 040000 191.3554 57.2005 AB                   90.8
2002 04 27 117 050000 191.5833 57.2321 AB                   90.9
2002 04 27 117 060000 191.8102 57.2620  B                   91.1
2002 04 27 117 070000 192.0367 57.2901  B                   91.1
2002 04 27 117 080000 192.2636 57.3165  B -0.0058   0.0007  91.2
2002 04 27 117 090000 192.4915 57.3413  B                   91.3
2002 04 27 117 100000 192.7210 57.3647  B                   91.4
2002 04 27 117 110000 192.9525 57.3868  B                   91.5
2002 04 27 117 120000 193.1864 57.4080  B                   91.7

2002 04 28 118 000000 196.0811 57.6738  A                   93.0  27
2002 04 28 118 010000 196.3139 57.6976  A                   93.1
2002 04 28 118 020000 196.5438 57.7208  A                   93.2
2002 04 28 118 030000 196.7709 57.7430  A                   93.3
2002 04 28 118 040000 196.9956 57.7641  A -0.0058   0.0005  93.4
2002 04 28 118 050000 197.2184 57.7836  A                   93.5
2002 04 28 118 060000 197.4398 57.8016  A                   93.6
2002 04 28 118 070000 197.6604 57.8179  A                   93.7
2002 04 28 118 080000 197.8811 57.8326  A                   93.8

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

PRDX.OUT.14-14.Apr23-30.s27
 2002 APR 27 01:30     90.5647693392  -229567.526 289.7001  57.1151 190.778  39.488   
 2002 APR 27 01:40     90.5808730226  -229927.564 292.1679  57.1211 190.817  40.822   
 2002 APR 27 01:50     90.5970026372  -230307.316 294.6359  57.1270 190.856  42.160   
 2002 APR 27 02:00     90.6131595490  -230706.407 297.1039  57.1328 190.894  43.499   
 2002 APR 27 02:10     90.6293450993  -231124.426 299.5719  57.1387 190.933  44.838   
 2002 APR 27 02:20     90.6455606023  -231560.927 302.0401  57.1445 190.972  46.175   
 2002 APR 27 02:30     90.6618073338  -232015.431 304.5083  57.1502 191.010  47.508   
 2002 APR 27 02:40     90.6780865380  -232487.423 306.9766  57.1560 191.049  48.835   
 2002 APR 27 02:50     90.6943994246  -232976.358 309.4449  57.1617 191.088  50.154   
 2002 APR 27 03:00     90.7107471579  -233481.659 311.9133  57.1673 191.126  51.461 
 2002 APR 27 03:10     90.7271308671  -234002.716 314.3818  57.1730 191.164  52.755 
 2002 APR 27 03:20     90.7435516312  -234538.893 316.8503  57.1786 191.203  54.032 
 2002 APR 27 03:30     90.7600104900  -235089.526 319.3189  57.1841 191.241  55.290 
 2002 APR 27 03:40     90.7765084296  -235653.921 321.7875  57.1896 191.279  56.523 
 2002 APR 27 03:50     90.7930463897  -236231.361 324.2562  57.1951 191.317  57.729 
 2002 APR 27 04:00     90.8096252643  -236821.105 326.7249  57.2005 191.355  58.901 
 2002 APR 27 04:10     90.8262458808  -237422.387 329.1937  57.2059 191.394  60.036 
 2002 APR 27 04:20     90.8429090260  -238034.422 331.6625  57.2112 191.432  61.128 
 2002 APR 27 04:30     90.8596154256  -238656.404 334.1314  57.2165 191.470  62.170 
 2002 APR 27 04:40     90.8763657465  -239287.508 336.6002  57.2217 191.507  63.155 
 2002 APR 27 04:50     90.8931605972  -239926.894 339.0692  57.2269 191.545  64.076 
 2002 APR 27 05:00     90.9100005327  -240573.704 341.5381  57.2321 191.583  64.924 
 2002 APR 27 05:10     90.9268860384  -241227.068 344.0071  57.2372 191.621  65.692 
 2002 APR 27 05:20     90.9438175431  -241886.103 346.4761  57.2422 191.659  66.370 
 2002 APR 27 05:30     90.9607954157  -242549.917 348.9451  57.2473 191.697  66.951 
 2002 APR 27 05:40     90.9778199597  -243217.607 351.4142  57.2522 191.735  67.425 
 2002 APR 27 05:50     90.9948914121  -243888.265 353.8832  57.2571 191.772  67.785 
 2002 APR 27 06:00     91.0120099517  -244560.976 356.3523  57.2620 191.810  68.027 
 2002 APR 27 06:10     91.0291756902  -245234.822 358.8214  57.2668 191.848  68.145 
 2002 APR 27 06:20     91.0463886721  -245908.882   1.2905  57.2716 191.886  68.137 
 2002 APR 27 06:30     91.0636488802  -246582.235   3.7596  57.2763 191.923  68.004 
 2002 APR 27 06:40     91.0809562384  -247253.963   6.2287  57.2809 191.961  67.748 
 2002 APR 27 06:50     91.0983105920  -247923.149   8.6978  57.2856 191.999  67.374 
 2002 APR 27 07:00     91.1157117395  -248588.881  11.1668  57.2901 192.037  66.887 
 2002 APR 27 07:10     91.1331594013  -249250.254  13.6359  57.2946 192.074  66.295 
 2002 APR 27 07:20     91.1506532404  -249906.371  16.1050  57.2991 192.112  65.607 
 2002 APR 27 07:30     91.1681928601  -250556.345  18.5740  57.3035 192.150  64.831 
 2002 APR 27 07:40     91.1857777991  -251199.300  21.0430  57.3079 192.188  63.975 
 2002 APR 27 07:50     91.2034075322  -251834.373  23.5120  57.3123 192.226  63.048 
 2002 APR 27 08:00     91.2210814800  -252460.716  25.9810  57.3165 192.264  62.059 
 2002 APR 27 08:10     91.2387989985  -253077.497  28.4499  57.3208 192.302  61.014 
 2002 APR 27 08:20     91.2565593916  -253683.902  30.9189  57.3250 192.339  59.920 
 2002 APR 27 08:30     91.2743619014  -254279.135  33.3877  57.3291 192.377  58.784 
 2002 APR 27 08:40     91.2922057203  -254862.423  35.8566  57.3332 192.415  57.612 
 2002 APR 27 08:50     91.3100899845  -255433.013  38.3254  57.3373 192.453  56.407 
 2002 APR 27 09:00     91.3280137757  -255990.177  40.7942  57.3413 192.492  55.176 
 2002 APR 27 09:10     91.3459761279  -256533.211  43.2629  57.3453 192.530  53.922 
 2002 APR 27 09:20     91.3639760296  -257061.437  45.7315  57.3493 192.568  52.648 
 2002 APR 27 09:30     91.3820124173  -257574.205  48.2002  57.3532 192.606  51.359 
 2002 APR 27 09:40     91.4000841883  -258070.895  50.6687  57.3570 192.644  50.056 
 2002 APR 27 09:50     91.4181901918  -258550.913  53.1373  57.3609 192.683  48.744 
 2002 APR 27 10:00     91.4363292397  -259013.700  55.6057  57.3647 192.721  47.423 
 2002 APR 27 10:10     91.4545001081  -259458.726  58.0741  57.3684 192.759  46.098 
 2002 APR 27 10:20     91.4727015344  -259885.494  60.5425  57.3722 192.798  44.768 
 2002 APR 27 10:30     91.4909322174  -260293.544  63.0108  57.3759 192.837  43.438 
 2002 APR 27 10:40     91.5091908350  -260682.446  65.4790  57.3796 192.875  42.108 
 2002 APR 27 10:50     91.5274760314  -261051.808  67.9472  57.3832 192.914  40.779 
 2002 APR 27 11:00     91.5457864188  -261401.274  70.4153  57.3868 192.953  39.455 
 2002 APR 27 11:10     91.5641205966  -261730.525  72.8833  57.3904 192.991  38.135 
 2002 APR 27 11:20     91.5824771352  -262039.278  75.3513  57.3940 193.030  36.823  
 2002 APR 27 11:30     91.6008545918  -262327.289  77.8192  57.3975 193.069  35.518 

PRDX.OUT.14-14.Apr23-30.s27
 2002 APR 28 00:40     93.0318906962  -253112.135 272.6925  57.6897 196.237  30.688 
 2002 APR 28 00:50     93.0496390754  -253311.820 275.1606  57.6937 196.275  31.944 
 2002 APR 28 01:00     93.0674021878  -253532.450 277.6289  57.6976 196.314  33.213 
 2002 APR 28 01:10     93.0851814956  -253773.922 280.0972  57.7015 196.352  34.493 
 2002 APR 28 01:20     93.1029784572  -254036.090 282.5656  57.7054 196.391  35.782 
 2002 APR 28 01:30     93.1207945122  -254318.773 285.0341  57.7093 196.429  37.080  
 2002 APR 28 01:40     93.1386310959  -254621.750 287.5027  57.7132 196.467  38.384 
 2002 APR 28 01:50     93.1564896195  -254944.763 289.9713  57.7170 196.506  39.695 
 2002 APR 28 02:00     93.1743714770  -255287.515 292.4400  57.7208 196.544  41.009 
 2002 APR 28 02:10     93.1922780431  -255649.675 294.9089  57.7246 196.582  42.327 
 2002 APR 28 02:20     93.2102106631  -256030.874 297.3777  57.7283 196.620  43.645 
 2002 APR 28 02:30     93.2281706572  -256430.708 299.8467  57.7321 196.658  44.962 
 2002 APR 28 02:40     93.2461593191  -256848.738 302.3157  57.7358 196.696  46.277 
 2002 APR 28 02:50     93.2641779052  -257284.491 304.7848  57.7394 196.733  47.587 
 2002 APR 28 03:00     93.2822276403  -257737.463 307.2540  57.7430 196.771  48.891 
 2002 APR 28 03:10     93.3003097150  -258207.114 309.7232  57.7466 196.809  50.185 
 2002 APR 28 03:20     93.3184252764  -258692.878 312.1925  57.7502 196.846  51.468 
 2002 APR 28 03:30     93.3365754352  -259194.154 314.6619  57.7537 196.884  52.737 
 2002 APR 28 03:40     93.3547612545  -259710.316 317.1313  57.7572 196.921  53.988 
 2002 APR 28 03:50     93.3729837574  -260240.707 319.6008  57.7606 196.958  55.218 
 2002 APR 28 04:00     93.3912439149  -260784.647 322.0704  57.7641 196.996  56.423 
 2002 APR 28 04:10     93.4095426521  -261341.428 324.5400  57.7674 197.033  57.599 
 2002 APR 28 04:20     93.4278808460  -261910.318 327.0096  57.7708 197.070  58.742 
 2002 APR 28 04:30     93.4462593191  -262490.565 329.4793  57.7740 197.107  59.847 
 2002 APR 28 04:40     93.4646788379  -263081.393 331.9491  57.7773 197.144  60.907 
 2002 APR 28 04:50     93.4831401163  -263682.009 334.4188  57.7805 197.181  61.916 
 2002 APR 28 05:00     93.5016438168  -264291.598 336.8887  57.7836 197.218  62.869 
 2002 APR 28 05:10     93.5201905321  -264909.332 339.3585  57.7867 197.255  63.756 
 2002 APR 28 05:20     93.5387808085  -265534.366 341.8284  57.7898 197.292  64.572 
 2002 APR 28 05:30     93.5574151276  -266165.842 344.2984  57.7928 197.329  65.307 
 2002 APR 28 05:40     93.5760939081  -266802.889 346.7684  57.7958 197.366  65.954 
 2002 APR 28 05:50     93.5948175119  -267444.626 349.2383  57.7987 197.403  66.504 
 2002 APR 28 06:00     93.6135862344  -268090.163 351.7084  57.8016 197.440  66.951 
 2002 APR 28 06:10     93.6324003130  -268738.604 354.1784  57.8045 197.477  67.287    

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

ARECIBO MASTERLOG
-----------------

April 8-9 UT (April 8 AST)
==========================
tapes: 802339, DLT 221 & 222
/share/olda/datafile.08apr02.r1602.1 CW     soln 15
/share/olda/datafile.08apr02.r1602.2 4.0 us soln 15
/share/olda/datafile.08apr02.r1602.3 4.5 us soln 15
/share/olda/datafile.08apr02.r1602.4 CW     soln 15
/share/olda/datafile.08apr02.r1602.5 CW     soln 17
/share/olda/datafile.08apr02.r1602.6 0.5 us soln 17 part of 1 run (rest is on tape) 

                                             <--- AST ---> <--- UTC --->
                                             rcsta  rcend  rcsta  rcend
setup    code    Bandwidth  osod  TXoff Runs HHMMSS-HHMMSS HHMMSS-HHMMSS Comments
------------------------------------------------------------------------------------------
CW no hopping     5000       15   +200   6   183351-185208 223351-225208
4.0 us   8191       30.5     15     +2   4   185521-190653 225521-230653
4.5 us   8191       27.1     15     +2   3   191000-191812 231000-231812
CW no hopping     5000       15   +200   5   192608-194104 232608-234104
CW no hopping     5000       17   +200   1   194448-194620 234448-234620
0.5 us  65535       30.5     17     +2   5   195138-201138 235138-001138 
0.2 us  65535       76.3     17     +2  10   203933-211105 003933-011105

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

April 10-11 UT (April 10 AST)
===========================
tapes: 802341, DLT 223 & 224
/share/olda/datafile.10apr02.r1602.1 0.5 us soln 17
/share/olda/datafile.10apr02.r1602.2 CW     soln 17
0.5 us  65535       30.5     17     +2   2   183354-183831 223354-223831
CW no hopping     5000       17   +200  11   184539-191835 224539-231835
0.1 us 65535       152.6     17    +10  29   192247-210751 232247-010751

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

April 11-12 UT (April 11 AST)
-----------------------------
tapes: 802343, DLT 225 & 226
/share/olda/datafile.11apr02.r1602.1 CW     soln 19
CW no hopping     5000       19   +200   5   183924-185326 223924-225326 BAD DATA
                                        10   185912-193126 225912-233126 GOOD DATA
0.1 us 65535       152.6     19    +10  30   193207-210257 233207-011057    

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

April 12-13 UT (April 12 AST)
-----------------------------
tape: 802344, DLT 227 & 228
/share/olda/datafile.12apr02.r1602.1 CW     soln 19
CW no hopping     5000       19   +200   5   184137-185837 224137-225837
0.1 us 65535       152.6     19    +10  38   190253-210023 230253-010023

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

April 13-14 UT (April 13 AST)
-----------------------------
tape: 802344
/share/olda/datafile.13apr02.r1602.1 CW     soln 19 monostatic
/share/olda/datafile.13apr02.r1602.2 CW     soln 19 monostatic
CW no hopping     5000       19   +200   1   184946-185105 224946-225105 monostatic
CW no hopping                19   +200       185924-190113 225924-230113 tx bistatic
0.1 us 65535       152.6     19    +10       190304-203503 230304-003503 tx bistatic
CW no hopping     5000       19   +200   3   203704-204413 003704-004413 monostatic

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

April 14-15 UT (April 14 AST)
-----------------------------
tapes: 802345, DLT 221 & 222 (same as April 8)
/share/olda/datafile.14apr02.r1602.1 CW     soln 19 monostatic
CW no hopping     5000       19   +200   1   190106-190224 230106-230224    monostatic
CW no hopping                19   +200       190343-190543 230343-230543 tx bistatic
0.1 us 65535       152.6     19    +10   3   190803-191508 230803-231508    monostatic
CW no hopping                19  +2000       191753-191953 231753-231953 tx bistatic
0.1 us 65535       152.6     19    +10   3   192033-192738 232033-232738   monostatic
0.1 us 65535       152.6     19    +10       193004-205730 233004-005730 tx bistatic

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

GOLDSTONE MASTERLOG
-------------------
                                              RCV      
file         setup                   runs start -stop    osod    OFFSET    TX Poln    
---------------------------------------------------------------------------------------------------
PSD0211.1999GU3,VOLT0211.1999GU3
CW 2 kHz, 2 hop, 30 s dwell,16kFFT   10   231820-234440  23      none      RCP monostatic
gu11103   10 us x 0.1 Hz              5   002955-004249  23      +3 Hz     RCP monostatic 3 looks/record
gu11104   10 us x 0.1 Hz              6   004657-010228  23      +3 Hz     RCP monostatic 1 look/record
gu11107    1 us x 0.1 Hz             11   012552-015739  23      +3 Hz     RCP monostatic
GBT CW  no hops                        tx 020620-022030  23   +2000 Hz     RCP bistatic Greenbank

GBT CW  no hops                        tx 041300-044025  23   +2000 Hz     RCP bistatic Greenbank
PSD02111RH.1999GU3,VOLT02111RH.1999gu3
also cw DSS13                             042830-044025  23   +2000 Hz     RCP bistatic DSS-13 no echo

PSD0211132K.1999gu3,VOLT0211132K.1999gu3
CW 2 kHz, 2 hops, 30 s dwell,32kFFT   4   045606-050547  23      none      RCP monostatic

           1/8 us 255 code             tx 054340-062334  23     none       RCP bistatic Greenbank
gu11108    1/8 us x 0.083 Hz              054502-062045  23     none       RCP bistatic DSS-13 bad data

           1/8 us 255 code             tx 062335-0730xx  25      +3 Hz     RCP bistatic Greenbank
gu11109    1/8 us x 0.083 Hz              064345-0730xx  25     none       RCP bistatic DSS-13 bad data
gu11110    1/8 us x 0.083 Hz              073250-081815  25     none       RCP bistatic DSS-13 no data

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

Last modified: 2002 April 22


Dr. Lance A. M. Benner | PHONE: (818) 354-7412 MS 300-233 | FAX: (818) 354-9476 Jet Propulsion Laboratory | email: lance@reason.jpl.nasa.gov Pasadena, CA 91109-8099

Asteroid Radar Astronomy