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Radar Astrometry   in .
matching records shown: 71 of 3560   database last updated: 2019-Oct-11

Object Epoch (UT) Measurement Sigma Units freq rcvr xmit bp ref Observer(s) Notes Modified
2P/Encke 1980-11-05 14:44:00 -280334.5 1.0 Hz 2380 -1 -1 P 5 Kamoun,P.G. 2019-Oct-09 11:23
26P/Grigg-Skjellerup 1982-05-26 22:17:00 36969.2 0.5 Hz 2380 -1 -1 P 6 Kamoun,P.G. 2019-Oct-09 11:23
41P/Tuttle-Giacobini-Kresak 2017-03-03 02:51:00 126090.4311 0.500 Hz 2380 -1 -1 C   AV Ephem 41P.s5: Doppler was 126093.9311023 added -3.5 Hz. From CW, BW = 3 Hz. 2017-Jul-20 15:38
41P/Tuttle-Giacobini-Kresak 2017-03-06 03:22:00 112772.5955 0.300 Hz 2380 -1 -1 C   PT EH MN Ephem 41P.s10: Doppler was 112771.1955352 added 1.4 Hz. From CW, BW = 2 Hz. 2017-Jul-20 15:38
41P/Tuttle-Giacobini-Kresak 2017-05-05 07:37:00 -77428.8378 0.200 Hz 2380 -1 -1 C   PT ERV LFZ Ephem 41P.s13: Doppler was -77423.1678019 added -5.67 Hz. From CW, BW ~ 0.5 Hz, significant offset from nominal Doppler. 2017-May-17 11:17
41P/Tuttle-Giacobini-Kresak 2017-05-09 07:00:00 -79880.9088 0.200 Hz 2380 -1 -1 C   ERV,LFZ,BAH Ephem 41P.s18: Doppler was -79878.9087520 added -2 Hz. From cw, bw=0.6. 2017-May-17 11:17
41P/Tuttle-Giacobini-Kresak 2017-05-11 07:00:00 -81607.0057 0.200 Hz 2380 -1 -1 C   ERV,LFZ,BAH Ephem 41P.s20: Doppler was -81605.0056710 added -2 Hz. From cw, bw=0.7. 2017-May-17 11:17
41P/Tuttle-Giacobini-Kresak 2017-05-11 08:00:00 221218228.38 10.00 us 2380 -1 -1 C   EH,MCN Ephem 41P.s22: delay was 221.225146884 added -0.0069185 sec. est dely from 8k,1k 4microsec range. 2017-May-17 11:17
41P/Tuttle-Giacobini-Kresak 2017-05-13 08:00:00 -85073.9245 0.210 Hz 2380 -1 -1 C   EH,MCN,ERV Ephem 41P.s31: Doppler was -85073.5945120 added -0.33 Hz. CW BW=0.7Hz sum of best 5 of 8 runs. 2017-May-17 11:17
41P/Tuttle-Giacobini-Kresak 2017-05-13 08:00:00 227282568.01 2.000 us 2380 -1 -1 C   EH,MCN,ERV Ephem 41P.s31: delay was 227.282550512 added 1.75e-05 sec. Estimated from 2microsec imaging front cap. 2017-May-17 11:17
41P/Tuttle-Giacobini-Kresak 2017-05-14 07:00:00 -84391.8840 0.210 Hz 2380 -1 -1 C   EH,MCN,ERV Ephem 41P.s31: Doppler was -84391.5139651 added -0.37 Hz. CW ctr of BW=0.7Hz. 2017-May-17 11:17
45P/Honda-Mrkos-Pajdusakova 2011-08-19 18:20:00 -1015844.096 15.00 Hz 8560 -14 -14 C   Brozovic,Benner,Giorgini Correction of -13 Hz to s30 from CW echoes w/1 Hz res'n. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2011-08-19 20:10:00 87498320.93 10.00 us 8560 -14 -14 C   Brozovic,Benner,Giorgini GSSR, delay correction based on 10 and 11 usec ranging and 127 code Range correction to s32 is +325 usec 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2011-08-20 20:20:00 -1129074.046 15.00 Hz 8560 -14 -14 C   Brozovic,Giorgini Correction of -6 Hz to s36 from CW echoes w/2 Hz res'n. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-09 12:13:00 102419.9263 0.500 Hz 2380 -1 -1 C   ERV,EH,AV,LFZM,CL Ephem 45P.s43: Doppler was 102415.4262733 added 4.5 Hz. From cw, bw=5. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-09 13:04:00 86295231.84 4.000 us 2380 -1 -1 C   ERV,AV,LFZM Ephem 45P.s48: delay was 86.294130173 added 0.00110167 sec. From 4us ranging, unambiguous, signal in two rows. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-10 11:10:00 83788072.5 0.500 us 2380 -1 -1 C   EH,CL,ERV,CRSV Ephem 45P.s50: delay was 83.788080303 added -7.8e-06 sec. COM est from 0.2 PFS plus est radius 4.3 microsec. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-10 11:35:00 50206.6592 0.500 Hz 2380 -1 -1 C   EH,CL,ERV Ephem 45P.s50: Doppler was 50206.1591587 added 0.5 Hz. From cw, bw=5. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-10 12:55:00 83660154.43 0.500 us 2380 -1 -1 C   EH,CL,ERV,CRSV Ephem 45P.s54: delay was 83.660152926 added 1.5e-06 sec. COM est from 0.2 PFS imaging plus est radius 4.3 microsec. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-11 10:30:00 -3276.6305 0.500 Hz 2380 -1 -1 C   EH,AV,CL,LFZM Ephem 45P.s54: Doppler was -3277.6304932 added 1.0 Hz. From Doppler, bw=4.9Hz. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-11 11:40:00 -8063.3320 0.500 Hz 2380 -1 -1 C   EH,CL,AV,LFZM Ephem 45P.s56: Doppler was -8064.3320103 added 1.0 Hz. from cw bw=4.9 Hz. Originally used small 0.1 err to force fit. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-11 11:40:00 83003139.11 0.400 us 2380 -1 -1 C   EH,CL,AV,LFZM Ephem 45P.s56: delay was 83.003155307 added -1.62e-05 sec. from pfs 0.2 imaging 4smpb est obj ctr. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-12 10:45:00 84230125.98 0.400 us 2380 -1 -1 C   EH,CL,LFZM Ephem 45P.s58: delay was 84.230128984 added -3e-06 sec. est COM from 0.2us PSF imaging. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-13 10:18:00 87362059.29 0.400 us 2380 -1 -1 C   EH,CL,LFZM Ephem 45P.s60: delay was 87.362057582 added 1.71e-06 sec. est COM from PFS 0.2us imaging and avg. radius 4.3us. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-14 09:10:00 92042414.32 0.500 us 2380 -1 -1 C   EH,CL,LFZM Ephem 45P.s60: delay was 92.042409318 added 5e-06 sec. COM est from pfs 0.2us images. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-15 08:55:00 98371717.01 0.500 us 2380 -1 -1 C   EH,CL,LFZM Ephem 45P.s60: delay was 98.371706615 added 1.04e-05 sec. COM est from pfs 0.2us image. 2017-Jul-20 15:42
45P/Honda-Mrkos-Pajdusakova 2017-02-16 08:38:00 105933041.69 0.500 us 2380 -1 -1 C   EH,CL,LFZM Ephem 45P.s62: delay was 105.933039589 added 2.1e-06 sec. est COM from 0.5us imaging and avg radius 4.3us. 2017-Jul-20 15:42
46P/Wirtanen 2018-12-11 02:45:00 83825887.52 4.000 us 2380 -1 -1 C   ERV,PT,EH,MN Ephem 46P.s35: delay was 83.825665926 added 0.00022159 sec. From unambiguous 4 us ranging, signal in one row. 2018-Dec-10 21:41
46P/Wirtanen 2018-12-13 01:35:00 44727.9096 0.300 Hz 2380 -1 -1 C   ERV Ephem 46P.s39: Doppler was 44731.7095742 added -3.8 Hz. BW = 3. 2018-Dec-13 13:52
46P/Wirtanen 2018-12-13 02:55:00 79946279.85 1.000 us 2380 -1 -1 C   ERV,PT,EH Ephem 46P.s47: delay was 79.946300114 added -2.026e-05 sec. From 0.5-us imaging, echo asymmetric and at least 600 m deep. 2018-Dec-13 13:52
46P/Wirtanen 2018-12-14 03:16:00 78605118.75 1.000 us 2380 -1 -1 C   ERV PT EH Ephem 46P.s51: delay was 78.605109462 added 9.29e-06 sec. From 0.5-us imaging. 2018-Dec-14 15:38
46P/Wirtanen 2018-12-15 02:57:00 77732687.34 1.000 us 2380 -1 -1 C   PT ERV EH Ephem 46P.s53: delay was 77.732680041 added 7.3e-06 sec. From 0.3-us, 6-spb imaging, echo asymmetric. 2019-Feb-27 17:52
103P/Hartley 2 2010-10-24 07:50:00 -35963.2427 0.5000 Hz 2380 -1 -1 C   NOLAN,HARMON RADAR/s163: Doppler was -35962.7426624 added -.5 Hz. From CW at .1 Hz res. BW ~ 2 Hz. Observer:Harmon, Measurer:Nolan. 2010-Nov-08 11:44
103P/Hartley 2 2010-10-24 08:02:00 123053086.64 4.000 us 2380 -1 -1 C   NOLAN,HARMON Ephem RADAR/s163: delay was 123.055049164 added -.00196252 s. From unambiguous 4-us ranging. COM=TE depth=2 px. Obs:Harmon, Meas:Nolan 2010-Nov-08 11:44
103P/Hartley 2 2010-10-25 07:34:00 124535088.24 1.500 us 2380 -1 -1 C   HARMON,NOLAN Ephem RADAR/s169: delay was 124.535072244 added .000016 sec. From 1 us imaging 2spb, reasonably broadside. COM=TE. depth=3us. Obs:Harmon, Meas:Nolan 2010-Nov-08 11:44
103P/Hartley 2 2010-10-26 09:26:00 126533148.82 2.000 us 2380 -1 -1 C   HARMON,NOLAN Ephem RADAR/s169: delay was 126.533113325 added 0.0000355 s. From 0.5us x 0.18Hz imaging. Est. COM near TE. Elongated target ~45 deg angle. 2010-Nov-08 11:44
103P/Hartley 2 2010-10-27 07:40:00 128543233.13 3.000 us 2380 -1 -1 C   HARMON,NOLAN Ephem RADAR/s169: delay was 128.543177627 added .0000555 s. From 1us x 0.2Hz imaging. COM near middle of trailing lobe. Observer:Harmon, Measurer:Nolan. 2010-Nov-08 11:44
103P/Hartley 2 2010-10-29 09:34:00 133954458.1 3.000 us 2380 -1 -1 C   HARMON,NOLAN Ephem RADAR/s169: delay was 133.954347099 added .000111 s. COM near center of trailing lobe. ~45 deg orientation. Observer:Harmon, Measurer:Nolan. 2010-Nov-08 11:44
209P/LINEAR 2014-05-22 06:00:00 88216413.95 20.0 us 8560 -14 -14 C   Brozovic,Benner,Busch GSSR, delay correction based on 10 and 11 usec bauds and 127 length code. Range correction to s96 is +390 usec. 2014-Jun-07 16:11
209P/LINEAR 2014-05-23 21:58:00 184855.6996 1.5 Hz 2380 -1 -1 C   EH,MN,PT,AS Ephem 209p.s96: Doppler was 184853.8996196 added 1.8 Hz. cw bw=6.3 Hz edges estimate. 2014-Jun-04 17:11
209P/LINEAR 2014-05-23 22:20:00 76212663.04 4.000 us 2380 -1 -1 C   PT,EH,MN,AS Ephem 209p.s98: delay was 76.213109556 added -0.00044652 sec. From unambiguous 4-us ranging. Echo is 4 rg deep. 2014-Jun-07 16:11
209P/LINEAR 2014-05-24 21:56:00 164876.2874 0.500 Hz 2380 -1 -1 C   EH,PT,LF Ephem 209p.s100: Doppler was 164875.5373979 added 0.75 Hz. cw BW=7.9 Hz center estimated. 2014-Jun-04 17:11
209P/LINEAR 2014-05-24 22:44:00 69794222.24 2.000 us 2380 -1 -1 C   EH,LF,PT Ephem 209p.s104: delay was 69.794223541 added -1.3e-06 sec. COM=TE 0.5 us imaging. Depth = 10 us. 2014-Jun-07 16:11
209P/LINEAR 2014-05-25 23:00:00 64276904.24 2.000 us 2380 -1 -1 C   EH,PT,LF,AS Ephem 209p.s108: delay was 64.276966244 added -6.2e-05 sec. COM estimated from trailing edge of 0.5 microsec image. 2014-Jun-04 17:11
209P/LINEAR 2014-05-26 04:10:00 455770.407 6.0 Hz 8560 -14 -14 C   Brozovic,Benner,Busch Correction of +5 Hz to s108 from CW echoes w/2 Hz res'n. Echo is ~40 Hz wide. 2014-Jun-07 16:11
209P/LINEAR 2014-05-26 04:40:00 63147344.84 8.0 us 8560 -14 -14 C   Brozovic,Benner,Busch GSSR, delay correction based on 4 usec baud and 127 length code. Range correction to s108 is -72 usec. 2014-Jun-07 16:11
209P/LINEAR 2014-05-26 21:20:00 398896.130 4.0 Hz 8560 -14 -14 C   Brozovic,Benner,Busch Correction of 0 Hz to s110 from CW echoes w/2 Hz res'n. Echo is 25-30 Hz wide. 2014-Jun-07 16:11
209P/LINEAR 2014-05-27 00:00:00 59762372.59 4.0 us 8560 -14 -14 C   Brozovic,Benner,Busch GSSR, delay correction based on 2 usec baud and 127 length code. Range correction to s110 is -2 usec. 2014-Jun-04 17:11
209P/LINEAR 2014-05-27 22:00:00 57001270.29 8.0 us 8560 -14 -14 C   Brozovic,Benner,Busch GSSR, delay correction based on 2 usec baud and 127 length code. Range correction to s112 is -6 usec. 2014-Jun-04 17:11
209P/LINEAR 2014-05-29 05:50:00 55332511.42 6.0 us 8560 -14 -14 C   Brozovic,Benner GSSR, delay correction based on 1 usec baud and 127 length code. Range correction to s116 is -19 usec. 2014-Jun-04 17:11
209P/LINEAR 2014-05-31 02:30:00 57970520.82 5.0 us 8560 -14 -14 C   Brozovic,Benner GSSR, delay correction based on 1 usec baud and 127 length code. Range correction to s118 is -9 usec. 2014-Jun-04 17:11
300P/Catalina 2005-06-12 00:11:00 150140.8326 2.0000 Hz 2380 -1 -1 C   HARMON,NOLAN Ephem 2005JQ5.s6:Doppler was 150136.3325858 added 4.5 Hz From 1 Hz resolution CW summing 13 runs. 2014-Apr-17 07:47
300P/Catalina 2005-06-25 19:46:00 103993844.78 1.500 us 2380 -1 -1 C   NOLAN,HARMON s10:delay was 103.992825080 added .0010197 sec From 0.5 us ranging 2014-Apr-17 07:47
300P/Catalina 2005-06-27 20:09:00 103139981.41 1.500 us 2380 -1 -1 C   NOLAN,HARMON Ephem s10:delay was 103.139015709 added .0009657 sec From 0.5 us ranging 2014-Apr-17 07:47
C/1983 H1 (IRAS-Araki-Alcock) 1983-05-11 22:00:00 -221306.40 0.1 Hz 2380 -1 -1 P 4 Harmon,J.K Radar Observations of Comet IRAS-Araki-Alcock 1983d", Ap.J. 338:1071-1093 2017-Jul-28 17:01
C/1983 J1 (Sugano-Saigusa-Fujikawa) 1983-06-10 09:18:00 612020.20 0.5 Hz 2380 -1 -1 P 1 Harmon, J.K. BW 2 Hz from Planetary and Space Science 47 (1999). Campbell et al, BAAS v15:p800 (1983). 2017-Jul-28 23:23
C/1983 J1 (Sugano-Saigusa-Fujikawa) 1983-06-11 07:13:00 472540.3 0.5 Hz 2380 -1 -1 P 1 Harmon, J.K. BW 2 Hz from Planetary and Space Science 47 (1999). Campbell et al, BAAS v15:p800 (1983). 2017-Jul-28 23:23
C/1983 J1 (Sugano-Saigusa-Fujikawa) 1983-06-12 06:19:00 200135.4 0.5 Hz 2380 -1 -1 P 1 Harmon, J.K. BW 2 Hz from Planetary and Space Science 47 (1999). Campbell et al, BAAS v15:p800 (1983). 2017-Jul-28 23:23
C/1996 B2 (Hyakutake) 1996-03-24 06:10:00 1052374 10.0 Hz 8510 -14 -14 C 18 Ostro,S.J. from 30 20-Hz-resn cw runs between 04:47 and 06:57 2005-Oct-29 12:39
C/1996 B2 (Hyakutake) 1996-03-24 08:30:00 956063 5.0 Hz 8510 -14 -14 C 18 Ostro,S.J. from 11 2-Hz-resolution cw runs between 08:00 and 09:00 2005-Oct-29 12:39
C/1996 B2 (Hyakutake) 1996-03-25 07:30:00 -13870.5 20.0 Hz 8510 -14 -14 C 18 Ostro,S.J. from 13-run sum with 20-Hz-resn 2005-Oct-29 12:39
P/2016 BA14 (PANSTARRS) 2016-03-17 01:00:00 714819.846 1.000 Hz 8560 -14 -14 C   SN,LB +6 Hz correction to s20 based on 0.2 Hz CW. Echo was 3-5 Hz wide. 2016-Mar-17 14:46
P/2016 BA14 (PANSTARRS) 2016-03-17 02:20:00 50546380.032 20.00 us 8560 -14 -14 C   SN -1360 us correction to s22 based on 10 us and 11 us ranging. Echo split in 2 range bins. 2016-Mar-17 14:46
P/2016 BA14 (PANSTARRS) 2016-03-17 02:40:00 50447438.339 3.000 us 8560 -14 -14 C   SN +7 us correction to s24 based on 1 us images. COM assumed at TE. Echo extent was 3-4 range bins. 2016-Mar-17 14:46
P/2016 BA14 (PANSTARRS) 2016-03-17 03:40:00 50152359.333 1.000 us 8560 -14 -14 C   SN,LB,MWB -2.5 us correction to s26 based on 1/4 us image. Echo extent about 7 range pixels. 2016-Mar-17 14:46
P/2016 BA14 (PANSTARRS) 2016-03-17 04:00:00 696389.508 0.500 Hz 8560 -14 -14 C   SN,LB,MWB +0.5 Hz correction to s28 based on 0.2 Hz CW. Echo BW=2.5 Hz. 2016-Mar-17 14:46
P/2016 BA14 (PANSTARRS) 2016-03-21 00:30:00 336538.808 1.000 Hz 7190 -9 -13 C   SN,MB +1.5 Hz correction to s30 based on 0.1 Hz CW. Echo BW=3 Hz. 2016-Mar-23 15:57
P/2016 BA14 (PANSTARRS) 2016-03-21 04:20:00 26379916.151 1.000 us 8560 -14 -14 C   SN,MB,LB +6 us correction to s32 based on 0.1 us imaging. Echo extent was 40 range bins. 2016-Mar-23 15:57
P/2016 BA14 (PANSTARRS) 2016-03-22 00:30:00 152391.632 0.500 Hz 7190 -9 -13 C   SN,LB,MB +0.5 Hz correction to s34 based on 0.1 Hz CW. Echo BW ~ 2 Hz. 2016-Mar-23 15:57
P/2016 BA14 (PANSTARRS) 2016-03-23 02:20:00 -94500.624 1.000 Hz 7190 -9 -13 C   SN,LB,MB 0 Hz correction to s36 based on 0.1 Hz CW. Echo BW was ~2Hz. 2016-Mar-23 15:57
P/2016 BA14 (PANSTARRS) 2016-03-23 05:40:00 24051455.584 1.000 us 8560 -14 -14 C   SN,MB +5 us correction to s38 based on 1 us imaging. Echo was 5 range bins. COM=LE+3 bins. 2016-Mar-23 15:57

Table Legend

Object  Full name/designation of the small-body.
Epoch (UT)  Epoch of the measurement in UT.
Measurement  The radar delay or Doppler measurement in units specified under the units column.
Sigma  Estimated 1-sigma uncertainty of the measurement.
Units  Units associated with the radar measurement. Delay measurements are 'us' and Doppler are 'Hz'.
freq  Frequency of the transmitter in MHz.
rcvr  Station code for the radar receiver.
xmit  Station code for the radar transmitter.
bp  Measurement reference (i.e. bounce point) with possible values of 'P' (peak power) and 'C' (center of mass).
ref  Reference publication (if any). See the table below.
Observer(s)  List of observers.
Notes  Notes specific to the measurement.
Modified  Date and time the record was last modified.

References

  1      Campbell, D.B., et al. (1983) "Radar Observations of Comets IRAS-Araki-Alcock and Sugano-Saigusa-Fujikawa", BAAS 15:800  
  2      Campbell, D.B., et al. (1976) "70-cm Radar Observations of 433 Eros", Icarus 28:17-20  
  3      Goldstein, R.M. (1969) "Radar Observations of Icarus", Science 162:903-904  
  4      Harmon, J.K., et al. (1989) "Radar Observations of Comet IRAS-Araki-Alcock 1983d", Ap.J. 338:1071-1093  
  5      Kamoun, P.G., et al. (1982) "Comet Encke: Radar Detection of Nucleus", Science 216:293-295  
  6      Kamoun, P.G. (1983) "Radar Observations of Cometary Nuclei", Ph.D. Thesis, MIT  
  7      Ostro, S.J., et al. (1983) "Radar Observations of Asteroid 1685 Toro", Astron. J. 88:565-576  
  8      Ostro, S.J., et al. (1984) "Radar and Photoelectric Observations of Asteroid 2100 Ra-Shalom", Icarus 60:391-403  
  9      Ostro, S.J., et al. (1985) "Mainbelt Asteroids: Dual-polarization Radar Observations", Science 224:442-446  
  10      Ostro, S.J., et al. (1989) "Radar Observations of Asteroid 1986 JK", Icarus 78:382-394  
  11      Ostro, S.J., et al. (1990) "Radar Images of Asteroid 1627 Ivar", Astron.J. 99:2012-2018  
  12      Ostro, S.J., et al. (1990) "Radar Images of Asteroid 1989 PB", Science 248:1523-1528  
  13      Ostro, S.J., et al. (1991) "Asteroid 1986 DA: Radar Evidence for a Metallic Composition", Science 252:1399-1404  
  14      Ostro, S.J., et al. (1991) "Asteroid Radar Astrometry", Astron.J. 102:1490-1502  
  15      Ostro, S.J., et al. (1991) "High-resolution Radar Ranging to Near-Earth Asteroids", BAAS 23:1144  
  16      Ostro, S.J., et al. (1995) "Radar images of asteroid 4179 Toutatis", Science 270:80-83  
  17      Ostro, S.J., et al. (1996) "Radar Observations of Asteroid 1620 Geographos", Icarus 121:46-66  
  18      Ostro, S.J., et al. (1996) "Near-Earth-Object Radar Astronomy at Goldstone in 1996", BAAS 28:1105  
  19      Pettengill, G.H., et al. (1969) "Radar Observations of Icarus", Icarus 10:432-435  
  20      Pettengill, G.H., et al. (1979) "Radar Observations of Asteroid 1580 Betulia", Icarus 40:350-354  
  21      Zaitsev, L.Z., et al. (1997) "Intercontinental Bistatic Radar Observations of 6489 Golevka (1991 JX)", Planet. Space Sci. 45(7):771-778  
  22      Benner, L.A., et al. (1999) "Radar Observations of Asteroid 7822 (1991 CS)", Icarus 137:247-259  
  23      Ostro, S.J., et al. (1999) "Asteroid 4179: 1999 Radar Observations", Icarus 137:122-139  
  24      Benner, L.A., et al. (1999) "Radar Observations of Asteroid 2063 Bacchus", Icarus 139:309-327  
  25      Ostro, S.J., et al. (1998) "Near-Earth-Asteroid Radar at Goldstone, Aug 1996 - Jun 1998", BAAS 30:1036  
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