Goldstone Radar Observations Planning: 1993 EA, 2003 CY18, and 2022 HT2
5693 1993 EA
1993 EA was discovered by Spacewatch in March, 1993. This object has a relatively rapid rotation period
of 2.5 hours and low lightcurve amplitude of 0.1 mag, which suggests a shape with low elongation.
Vis-IR observations indicate a Q/Sq spectral class that is common in the near-Earth population.
This object is a rapid rotator with a low lightcurve amplitude. Pravec et al. (2006)
reported that about 2/3 of such objects in the near-Earth population have a satellite,
so one of our principal goals is to investigate whether 1993 EA is a binary system.
The diameter has not been measured as far as we know, but its absolute magnitude of
16.7 and its spectral class suggest a diameter of roughly 1.4 km.
1993 EA will approach within 0.069 au on May 28 when it should be a moderately strong
radar target suitable for imaging at 75 m or possibly 37.5 m resolutions.
This asteroid has not been observed with radar previously.
1993 EA is designated as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
2003 CY18
2003 CY18 was discovered by JPL's Near-Earth Asteroid Tracking (NEAT) program on
Haleakala on February 9, 2003. 2003 CY18 will make a relatively distant approach
to Earth at 0.09 au in late May, 2022.
The absolute magnitude of 18.3 suggests a diameter within a factor of two of 800 meters.
2003 CY18 was observed by radar at Arecibo in 2005. The images show a relatively slow rotator
with a pronounced flat facet and a bandwidth of about 5 Hz (when the transmitter frequency is
converted to 8560 MHz). The Arecibo images establish a lower bound on the long axis of
at least 300 meters. A precise estimate of the rotation period is not available.
2022 HT2
2022 HT2 is a target-of-opportunity that will overlap view periods already scheduled for 2003 CY18
on June 3 and 4. This asteroid was discovered by Pan-STARRS 2 on April 26 and it will approach
within about 12 lunar distances on May 30.
The asteroid's absolute magnitude of 21.0 suggests a diameter within a factor of two of 200 meters
but otherwise nothing is known about its physical properties.
The close approach will occur when the asteroid is too far south for Goldstone to track,
so observations on June 3 and 4 will occur when the asteroid is moving away from Earth.
We are expecting signal-to-noise ratios strong enough for CW observations and ranging but
probably not strong enough for detailed delay-Doppler imaging.
2022 HT2 is classified as a "Potentially Hazardous Asteroid" by the Minor Planet Center.
Orbital and Physical Characteristics
Name 1993 EA 2003 CY18 2022 HT2
Number 5693 163692 not numbered
Discoverer Spacewatch 691 NEAT 608 Pan-STARRS 2
Discovery date 1993 March 3 2003 Feb 9 2022 Apr 26
Orbit type Apollo Apollo Apollo
Close approach dist. 0.0686 au 0.0925 au 0.03055 au
Close approach dist. 26.7 lunar distances 36.0 LD 11.9 LD
Close approach date 2022 May 28 2022 Jun 1 2022 May 30
semimajor axis 1.271 au 1.526 au 1.850 au
eccentricity 0.585 0.411 0.578
inclination 5.1 deg 7.2 deg 1.5 deg
Orbital period 1.43 years 1.89 y 2.52 y
perihelion distance 0.527 au 0.8996 au 0.781
aphelion distance 2.015 au 2.152 au 2.919 au
MOID 0.0058 au 0.0927 au 0.021 au
absolute magnitude (H) 16.75 18.3 21.0
Diameter ~1.4 km ~0.8 km ~0.2 km
optical albedo unknown unknown unknown
Rotation period 2.496 h unknown unknown
lightcurve amplitude 0.1 mag unknown unknown
spectral class Sq unknown unknown
PHA PHA
Last update: 2022 June 3
Goldstone Radar Echoes from Asteroid 1993 EA
Echo power spectrum from 1993 EA obtained on May 24.
Echo power in standard deviations is plotted as a function of Doppler frequency.
Solid and dashed curves denote opposite-sense circular and same-sense circular polarizations.
The frequency resolution is 1 Hz and the bandwidth of the echo is about 42 Hz.
The bandwidth and rotation period place a lower bound on the maximum pole-on extent
of about 1 km.
Echo power spectrum obtained on May 29. This is a weighted sum of 64 runs obtained
with solution 383. The bandwidth is about 43 Hz.
This is an integration spanning 2.56 h or slightly more than one rotation.
Goldstone Radar Echoes from Asteroid 2003 CY18
Echo power spectrum from 2003 CY18 obtained on May 27. The frequency
resolution is 0.2 Hz and the bandwidth is about 0.8 Hz, which suggests
relatively slow rotation.
Echo power spectrum from 2003 CY18 obtained on May 29. The frequency
resolution is 0.033 Hz and the bandwidth is about 0.5 Hz.
Delay-Doppler image of 2003 CY18 obtained on June 1. Resolution is 18.75 m x 0.07 Hz.
Range increases down and Doppler frequency increases to the right. The visible extent
of the echo appears to be at least seven rows. The image is a weighted sum of
41 transmit-receive cycles.
Collage of images obtained on June 3 between 09:18:49-13:47:49 UT. Each panel is
a weighted sum of 20 or 21 runs. Resolution is 18.75 m x 0.07 Hz.
The asteroid exhibits a modest amount of rotation in this sequence
and shows evidence for a concavity on the leading edge.
Goldstone Radar Echoes from Asteroid 2022 HT2
Echo power spectrum from 2022 HT2 obtained on June 3. The frequency
resolution is 1.0 Hz and the bandwidth is about 4 Hz.
Discovery IAU Circular.
1993 EA
http://www.cbat.eps.harvard.edu/iauc/05700/05721.html
2003 CY18
https://www.minorplanetcenter.net/mpec/K03/K03C57.html
2022 HT2
https://www.minorplanetcenter.net/mpec/K22/K22H96.html
SNR Calculations
1993 EA
GOLDSTONE SNRs
1993 EA: D = 1.5 km, P = 2.5 h, OC albedo = 0.1
wk DOY start date window RA, dec dist runs SNR/day SNR/run
20 140 2022 May 20 06:25-15:43 287, +5 0.114 146 31 3
20 141 2022 May 21 06:28-15:59 290, +8 0.105 162 44 4
20 142 2022 May 22 06:32-16:19 294, +10 0.096 182 64 5
21 143 2022 May 23 06:39-16:43 299, +13 0.088 203 91 7 Schedule:
21 144 2022 May 24 06:49-17:13 305, +17 0.081 228 130 9 0650-1000
21 145 2022 May 25 07:02-17:49 312, +20 0.075 253 170 12 el > 75 deg
21 146 2022 May 26 07:20-18:31 320, +24 0.071 276 220 14 1206-1341
21 147 2022 May 27 07:45-19:18 330, +28 0.069 294 250 16 1226-1433
21 148 2022 May 28 08:15-20:07 341, +31 0.069 302 260 16 0845-1015 1259-1520 CANCELLED
21 149 2022 May 29 08:50-20:53 353, +33 0.070 299 240 15 1605-2050 1337-1605
22 150 2022 May 30 09:27-21:34 4, +34 0.074 286 190 12 1416-1645
22 151 2022 May 31 10:03-22:07 13, +34 0.080 267 140 10 1451-1720
22 152 2022 Jun 01 10:35-22:33 22, +33 0.086 245 100 7 1521-1748
22 153 2022 Jun 02 11:02-22:52 29, +33 0.094 223 74 5
22 154 2022 Jun 03 11:25-23:07 34, +31 0.103 202 52 4
22 155 2022 Jun 04 11:44-23:18 39, +30 0.112 184 36 3
22 156 2022 Jun 05 11:59-23:26 43, +29 0.122 168 26 2
The the track on May 24 and the second track on May 29 will cover more than one rotation.
2003 CY18
Goldstone SNRs
2003 CY18: D = 0.8 km, P = 2.2 h, OC albedo = 0.1
wk DOY start date window RA, dec dist runs SNR/day SNR/run
21 143-144 2022 May 23-24 23:59-17:25 253, +68 0.102 305 24 2
21 144-145 2022 May 24-25 23:41-18:23 257, +70 0.100 333 26 2
21 145-146 2022 May 25-26 23:15-20:03 263, +73 0.098 373 30 2 Schedule
21 146-147 2022 May 26-27 22:22-18:47 272, +75 0.096 450 33 2 0020-0200
21 148 2022 May 28 00:51-20:21 283, +77 0.095 456 36 2
21 149 2022 May 29 00:57-22:07 298, +78 0.094 461 38 2 1605-2205 (earlier track was cancelled)
22 150 2022 May 30 01:25-23:11 317, +79 0.093 465 39 2 CANCELLED
22 151 2022 May 31 02:49-23:30 335, +78 0.093 467 39 2
22 152 2022 Jun 01 04:40-23:33 349, +76 0.093 467 39 2 0440-0740
22 153-154 2022 Jun 02-03 06:11-01:26 0, +74 0.093 423 37 2 CANCELLED
22 154-155 2022 Jun 03-04 05:26-00:50 8, +71 0.094 366 35 2 0935-1535 Jun 3
22 155-156 2022 Jun 04-05 06:46-00:29 14, +68 0.095 333 32 2 0930-1530 Jun 4 Engineering tests
22 156-157 2022 Jun 05-06 07:39-00:13 18, +65 0.096 309 30 2
23 157-158 2022 Jun 06-07 08:16-00:00 22, +63 0.098 289 27 2
23 158 2022 Jun 07 08:45-23:49 25, +60 0.100 271 25 2
23 159 2022 Jun 08 09:07-23:39 27, +57 0.102 256 22 2
2003 CY18 is a relatively slow rotator so the SNRs may be
significantly stronger than values listed here.
Update on May 27: the SNRs were NOT significantly stronger.
2022 HT2
2022 HT2: D = 0.21 km, P = 2.2 h, OC albedo = 0.1
start date window RA, dec dist runs SNR/day SNR/run
2022 Jun 1 14:55-18:38 23, -30 0.035 189 75 6
2022 Jun 2 14:05-20:12 30, -20 0.040 274 63 4
2022 Jun 3 13:43-21:00 35, -12 0.046 282 41 3 Scheduled: 1345-1535 Overlaps CY18
2022 Jun 4 13:31-21:29 38, -7 0.053 268 25 2 Engineering tests
2022 Jun 5 13:22-21:49 40, -2 0.061 249 15 1
This object is too far south for Goldstone to track prior to June 1.
Track Assignments
Goldstone tracks:
UT UT PDT RTT SNR/
DOY Date TX Window Target TX Window Dur'n sec run
144 May 24 0650-1000 1993 EA 2350-0300 May 23-24 3:10 81 9
145 May 25 0210-0435 1989 JA 1910-2135 May 24 2:25 34 78
156 May 26 0245-0520 1989 JA 1945-2220 May 25 2:35 29 97
147 May 27 0020-0200 2003 CY18 1720-1900 May 26 1:40 96 2
148 May 28 0845-1015 1993 EA 0145-0315 May 28 1:30 69 16 CANCELLED: Spacecraft safe mode
149 May 29 0100-1020 2003 CY18 1800-0320 May 28-29 9:20 94 2 CANCELLED
149 May 29 0850-1020 1993 EA 0150-0320 May 29 1:30 70 15 CANCELLED
149 May 29 1605-2050 1993 EA 0905-1350 May 29 4:45 70 15
149 May 29 1605-2205 2003 CY18 0905-1505 May 29 6:00 94 2
150 May 30 0130-0250 2003 CY18 1830-1950 May 29 1:20 93 2 CANCELLED
152 Jun 1 0440-0740 2003 CY18 2140-0040 May 31-01 3:00 93 2
153 Jun 2 0910-1110 2003 CY18 0210-0410 Jun 2 2:00 93 2 CANCELLED
154 Jun 3 0945-1535 2003 CY18 0245-0835 Jun 3 5:50 94 2
154 Jun 3 1345-1535 2022 HT2 0645-0835 Jun 3 1:50 46 3
155 Jun 4 0930-1530 2003 CY18 0230-0830 Jun 4 6:00 95 2 Engineering tests
155 Jun 4 1330-1530 2022 HT2 0630-0830 Jun 4 2:00 53 2 Engineering tests
Uncertainties
1993 EA
JPL/Horizons solution 377, # obs: 2059 (1984-2022)
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2022-May-23 00:00 * 296.46007 11.70798 0.09181228291892 0.832 0.75 2.72 0.000174
2022-May-24 00:00 * 301.71224 14.86273 0.08447310419635 0.902 0.89 3.25 0.000181
2022-May-25 00:00 * 308.06128 18.40154 0.07821310403160 0.964 1.04 3.80 0.000192
2022-May-26 00:00 * 315.69207 22.20180 0.07330335221774 1.009 1.17 4.26 0.000209
2022-May-27 00:00 * 324.69139 26.00018 0.07002525513108 1.025 1.24 4.51 0.000231
2022-May-28 00:00 *m 334.91977 29.40359 0.06861313446679 1.002 1.22 4.44 0.000255
2022-May-29 00:00 *m 345.90824 32.00554 0.06918490974865 0.945 1.12 4.07 0.000278
2022-May-30 00:00 *m 356.91802 33.56826 0.07170018962066 0.867 0.96 3.50 0.000299
2022-May-31 00:00 *m 7.20154 34.12238 0.07597648664087 0.784 0.80 2.91 0.000314
2022-Jun-01 00:00 *m 16.27085 33.89891 0.08175108600721 0.706 0.65 2.38 0.000326
2022-Jun-02 00:00 *m 23.96981 33.18311 0.08874766410644 0.638 0.53 1.94 0.000334
2022-Jun-03 00:00 *m 30.37625 32.21248 0.09671922187009 0.579 0.44 1.60 0.000340
2003 CY18
JPL/Horizons solution 207, # obs: 965 (2003-2022)
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2022-May-23 00:00 * 248.10878 64.59175 0.10515552328306 0.295 0.16 0.57 0.000183
2022-May-24 00:00 * 251.32688 67.02759 0.10271265549976 0.308 0.17 0.62 0.000182
2022-May-25 00:00 * 255.44679 69.48721 0.10049260369857 0.322 0.18 0.67 0.000180
2022-May-26 00:00 * 260.84795 71.91943 0.09851154960457 0.337 0.20 0.72 0.000178
2022-May-27 00:00 * 268.08905 74.23919 0.09678586087663 0.353 0.22 0.78 0.000175
2022-May-28 00:00 *m 277.92291 76.30610 0.09533168398687 0.369 0.23 0.85 0.000172
2022-May-29 00:00 *m 291.08313 77.90032 0.09416446689780 0.385 0.25 0.92 0.000169
2022-May-30 00:00 *m 307.48410 78.73387 0.09329843300883 0.400 0.27 0.99 0.000164
2022-May-31 00:00 *m 325.18552 78.57216 0.09274603936464 0.415 0.29 1.05 0.000160
2022-Jun-01 00:00 *m 341.20102 77.41386 0.09251746135747 0.429 0.31 1.11 0.000155
2022-Jun-02 00:00 *m 353.87579 75.48199 0.09262015055438 0.440 0.32 1.16 0.000150
2022-Jun-03 00:00 *m 3.31715 73.04636 0.09305850972507 0.449 0.33 1.20 0.000145
2022-Jun-04 00:00 *m 10.29351 70.31614 0.09383371888024 0.456 0.34 1.23 0.000140
2022-Jun-05 00:00 *m 15.53397 67.43174 0.09494372936656 0.461 0.34 1.25 0.000135
2022-Jun-06 00:00 *m 19.56846 64.48562 0.09638342289558 0.462 0.35 1.26 0.000131
2022-Jun-07 00:00 *m 22.75506 61.54004 0.09814491293354 0.461 0.34 1.25 0.000127
2022-Jun-08 00:00 *m 25.33321 58.63812 0.10021795098861 0.457 0.34 1.24 0.000124
2022-Jun-09 00:00 *m 27.46505 55.81010 0.10259039243238 0.452 0.33 1.21 0.000122
2022-Jun-10 00:00 *m 29.26262 53.07705 0.10524867612769 0.444 0.32 1.18 0.000120
2022 HT2
JPL/Horizons solution 14, # obs: 84 (61 days)
2022 May 31
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2022-May-31 00:00 *m 359.42756 -49.25978 0.03059787331339 5.286 5.68 20.64 0.002043
2022-Jun-01 00:00 *m 15.24590 -37.57358 0.03216563205931 6.083 6.03 21.92 0.001988
2022-Jun-02 00:00 *m 24.97345 -26.45282 0.03600136310036 5.984 6.75 24.53 0.002067
2022-Jun-03 00:00 *m 31.23309 -17.46654 0.04148362437849 5.420 7.89 28.67 0.002265 *
2022-Jun-04 00:00 *m 35.51305 -10.61691 0.04805813098098 4.763 9.04 32.85 0.002547
2022-Jun-05 00:00 *m 38.60034 -5.43737 0.05534511187014 4.170 9.97 36.24 0.002883
JPL/Horizons solution 2:
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2022-May-31 00:00 *m 359.46769 -49.23992 0.03059306276144 2698.282 3288.93 11953.45 0.074043
2022-Jun-01 00:00 *m 15.27275 -37.54990 0.03216576352088 2574.976 2959.42 10755.89 0.055257
2022-Jun-02 00:00 *m 24.99171 -26.43114 0.03600550827854 2165.944 2202.15 8003.60 0.141970
2022-Jun-03 00:00 *m 31.24623 -17.44868 0.04149057114741 1717.685 1498.82 5447.38 0.206762 *
2022-Jun-04 00:00 *m 35.52301 -10.60264 0.04806689982926 1346.714 1003.56 3647.40 0.250846
2022-Jun-05 00:00 *m 38.60825 -5.42594 0.05535503659467 1067.775 686.45 2494.85 0.280798
Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination:
1993 EA
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu%
2022-May-10 00:00 269.80986 -5.76315 0.22657568566330 15.362 n.a. 136.4613 /L 115.8/ 59.8307
2022-May-11 00:00 270.72542 -5.17997 0.21500167421929 15.245 n.a. 136.2700 /L 104.9/ 69.5472
2022-May-12 00:00 271.72367 -4.53656 0.20354913935237 15.125 n.a. 135.9689 /L 93.7/ 78.7322
2022-May-13 00:00 272.81908 -3.82303 0.19222701503223 15.002 n.a. 135.5399 /L 82.3/ 86.9049
2022-May-14 00:00 274.02935 -3.02730 0.18104678909631 14.877 n.a. 134.9610 /L 70.9/ 93.5225
2022-May-15 00:00 275.37625 -2.13460 0.17002332833255 14.751 n.a. 134.2054 /L 59.6/ 98.0316
2022-May-16 00:00 276.88687 -1.12684 0.15917599820693 14.622 n.a. 133.2400 /L 48.9/ 99.9547
2022-May-17 00:00 278.59513 0.01828 0.14853018711168 14.493 n.a. 132.0242 /L 39.5/ 98.9953
2022-May-18 00:00 280.54396 1.32812 0.13811938553930 14.364 n.a. 130.5072 /L 32.7/ 95.1235
2022-May-19 00:00 282.78808 2.83604 0.12798802467135 14.237 n.a. 128.6259 /L 30.1/ 88.6013
2022-May-20 00:00 285.39774 4.58212 0.11819534027455 14.115 n.a. 126.3018 /L 32.0/ 79.9353
2022-May-21 00:00 288.46337 6.61293 0.10882056467613 14.001 n.a. 123.4382 /L 37.0/ 69.7769
2022-May-22 00:00 292.10101 8.97899 0.09996967097352 13.902 n.a. 119.9191 /L 43.2/ 58.8148
2022-May-23 00:00 296.45735 11.72738 0.09178348682989 13.826 n.a. 115.6117 /L 49.2/ 47.6927
2022-May-24 00:00 301.71105 14.88489 0.08444584013852 13.786 n.a. 110.3788 /L 54.4/ 36.9658
2022-May-25 00:00 308.06248 18.42667 0.07818789422054 13.800 n.a. 104.1084 /L 58.1/ 27.0884
2022-May-26 00:00 315.69677 22.22974 0.07328084422289 13.891 n.a. 96.7687 /L 60.1/ 18.4194
2022-May-27 00:00 324.70076 26.03018 0.07000615200354 14.085 n.a. 88.4805 /L 60.4/ 11.2332
2022-May-28 00:00 334.93462 29.43425 0.06859804691931 14.403 n.a. 79.5705 /L 59.4/ 5.7291
2022-May-29 00:00 345.92842 32.03508 0.06917417752010 14.855 n.a. 70.5401 /L 58.0/ 2.0367
2022-May-30 00:00 356.94221 33.59521 0.07169377834028 15.432 n.a. 61.9302 /L 57.1/ 0.2201
2022-May-31 00:00 7.22774 34.14600 0.07597402788159 16. n.a. 54.1588 /L 57.7/ 0.2813
2022-Jun-01 00:00 16.29722 33.91919 0.08175201681998 17. n.a. 47.4388 /L 60.3/ 2.1667
2022-Jun-02 00:00 23.99512 33.20047 0.08875137110832 18. n.a. 41.8009 /L 64.7/ 5.7750
2022-Jun-03 00:00 30.39988 32.22744 0.09672513434982 18. n.a. 37.1631 /L 70.7/ 10.9678
2022-Jun-04 00:00 35.69421 31.16040 0.10547224349799 19. n.a. 33.3963 /L 78.1/ 17.5789
2022-Jun-05 00:00 40.07924 30.09358 0.11483747157151 20. n.a. 30.3645 /L 86.4/ 25.4196
2003 CY18
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu%
2022-May-10 00:00 233.25953 40.02552 0.15140117248773 16.277 n.a. 122.1074 /L 71.1/ 59.8307
2022-May-11 00:00 233.72828 41.46329 0.14712260567589 16.251 n.a. 120.4664 /L 65.6/ 69.5472
2022-May-12 00:00 234.24538 42.96326 0.14294332614995 16.227 n.a. 118.7575 /L 61.7/ 78.7322
2022-May-13 00:00 234.81911 44.52957 0.13886669352125 16.205 n.a. 116.9778 /L 59.8/ 86.9049
2022-May-14 00:00 235.45954 46.16649 0.13489688159855 16.187 n.a. 115.1243 /L 60.4/ 93.5225
2022-May-15 00:00 236.17907 47.87830 0.13103897296496 16.171 n.a. 113.1937 /L 63.4/ 98.0316
2022-May-16 00:00 236.99317 49.66922 0.12729904896791 16.158 n.a. 111.1827 /L 68.4/ 99.9547
2022-May-17 00:00 237.92136 51.54313 0.12368426700284 16.150 n.a. 109.0879 /L 74.8/ 98.9953
2022-May-18 00:00 238.98881 53.50332 0.12020291770955 16.146 n.a. 106.9061 /L 81.8/ 95.1235
2022-May-19 00:00 240.22841 55.55213 0.11686445804003 16.148 n.a. 104.6345 /L 88.7/ 88.6013
2022-May-20 00:00 241.68407 57.69033 0.11367952006898 16.155 n.a. 102.2706 /L 94.8/ 79.9353
2022-May-21 00:00 243.41548 59.91642 0.11065989669100 16.170 n.a. 99.8131 /L 99.6/ 69.7769
2022-May-22 00:00 245.50563 62.22543 0.10781850242300 16.192 n.a. 97.2614 /L 102.5/ 58.8148
2022-May-23 00:00 248.07241 64.60722 0.10516930197117 16.223 n.a. 94.6167 /L 103.3/ 47.6927
2022-May-24 00:00 251.28708 67.04365 0.10272719421665 16.264 n.a. 91.8817 /L 102.1/ 36.9658
2022-May-25 00:00 255.40339 69.50405 0.10050783720326 16.315 n.a. 89.0616 /L 99.1/ 27.0884
2022-May-26 00:00 260.80133 71.93731 0.09852740127572 16.379 n.a. 86.1644 /L 94.7/ 18.4194
2022-May-27 00:00 268.04093 74.25846 0.09680224242528 16.456 n.a. 83.2010 /L 89.3/ 11.2332
2022-May-28 00:00 277.87802 76.32709 0.09534849565492 16.547 n.a. 80.1859 /L 83.6/ 5.7291
2022-May-29 00:00 291.05131 77.92310 0.09418159825374 16.654 n.a. 77.1373 /L 78.0/ 2.0367
2022-May-30 00:00 307.47852 78.75774 0.09331576441514 16.776 n.a. 74.0768 /L 73.1/ 0.2201
2022-May-31 00:00 325.21143 78.59562 0.09276344412950 16.914 n.a. 71.0295 /L 69.4/ 0.2813
2022-Jun-01 00:00 341.24876 77.43559 0.09253480850291 17.067 n.a. 68.0235 /L 67.6/ 2.1667
2022-Jun-02 00:00 353.93162 75.50163 0.09263730804615 17.235 n.a. 65.0885 /L 67.9/ 5.7750
2022-Jun-03 00:00 3.37260 73.06421 0.09307534793414 17.416 n.a. 62.2554 /L 70.5/ 10.9678
2022-Jun-04 00:00 10.34517 70.33266 0.09385011400079 17.607 n.a. 59.5547 /L 75.2/ 17.5789
2022-Jun-05 00:00 15.58099 67.44734 0.09495956651212 17.806 n.a. 57.0152 /L 81.8/ 25.4196
2022-Jun-06 00:00 19.61097 64.50059 0.09639859863749 18. n.a. 54.6628 /L 90.0/ 34.2790
2022-Jun-07 00:00 22.79353 61.55457 0.09815933712256 18. n.a. 52.5193 /L 99.2/ 43.9163
2022-Jun-08 00:00 25.36815 58.65232 0.10023154779535 18. n.a. 50.6012 /L 109.3/ 54.0455
2022-Jun-09 00:00 27.49694 55.82402 0.10260310063308 19. n.a. 48.9195 /L 119.8/ 64.3137
2022-Jun-10 00:00 29.29186 53.09075 0.10526044873392 19. n.a. 47.4790 /L 130.4/ 74.2811
2022 HT2
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu%
2022-May-20 00:00 247.56524 -36.80076 0.10415351308155 17.236 n.a. 160.6687 /L 41.2/ 79.9353
2022-May-21 00:00 248.88477 -38.09795 0.09529946852804 17.062 n.a. 159.6176 /L 53.9/ 69.7769
2022-May-22 00:00 250.52363 -39.62543 0.08658047771389 16.882 n.a. 158.2360 /L 66.0/ 58.8148
2022-May-23 00:00 252.61257 -41.44464 0.07802300918915 16.697 n.a. 156.4306 /L 77.3/ 47.6927
2022-May-24 00:00 255.36114 -43.63464 0.06966737615664 16.506 n.a. 154.0659 /L 87.8/ 36.9658
2022-May-25 00:00 259.12302 -46.29107 0.06157615165628 16.314 n.a. 150.9422 /L 97.0/ 27.0884
2022-May-26 00:00 264.53002 -49.50699 0.05384866051432 16.126 n.a. 146.7620 /L 104.6/ 18.4194
2022-May-27 00:00 272.76816 -53.28805 0.04664586497004 15.956 n.a. 141.0875 /L 110.1/ 11.2332
2022-May-28 00:00 286.03964 -57.25428 0.04023067726369 15.834 n.a. 133.3135 /L 112.5/ 5.7291
2022-May-29 00:00 307.32285 -59.84297 0.03501986538652 15.812 n.a. 122.7584 /L 111.2/ 2.0367
2022-May-30 00:00 335.19022 -57.73784 0.03159882777524 15.981 n.a. 109.1241 /L 106.2/ 0.2201
2022-May-31 00:00 359.50675 -49.25980 0.03056294775765 16.436 n.a. 93.3949 /L 98.9/ 0.2813
2022-Jun-01 00:00 15.31882 -37.55257 0.03213759648899 17.189 n.a. 78.0114 /L 92.6/ 2.1667
2022-Jun-02 00:00 25.03441 -26.42225 0.03598065029576 18.131 n.a. 65.1835 /L 89.7/ 5.7750
2022-Jun-03 00:00 31.28379 -17.43460 0.04146915416380 19. n.a. 55.5372 /L 90.7/ 10.9678
2022-Jun-04 00:00 35.55587 -10.58708 0.04804844693797 20. n.a. 48.6117 /L 94.9/ 17.5789
2022-Jun-05 00:00 38.63718 -5.41058 0.05533895256149 21. n.a. 43.7062 /L 101.3/ 25.4196
2022-Jun-06 00:00 40.95954 -1.44664 0.06310436808209 21. n.a. 40.2348 /L 109.4/ 34.2790
2022-Jun-07 00:00 42.77392 1.64898 0.07120037076171 22. n.a. 37.7776 /L 118.6/ 43.9163
Setups
CW setup:
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: no hopping
Bandwidth: 5000 Hz
TXoffset +500 Hz
FFT 5000 for 1 Hz resolution
Ranging setups:
---------------------------------------------------------------------------
10-usec
baud 10 usec
code 127
PRP 1270 usec
FFT 128
ncoh 1
bandwidth 787 Hz
resolution 12.3 Hz
TXOFF +100 Hz (echo in bin 32 + 8 = 40)
---------------------------------------------------------------------------
11-usec
baud 11 usec
code 127
PRP 1397 usec
FFT 64
ncoh 1
bandwidth 716 Hz
resolution 11.2 Hz
TXOFF +100 Hz (echo in bin 32 + 9 = 41)
-------------------------------------------------------------------------
1-usec
baud 1 usec
code 255
FFT 256
ncoh 16
bandwidth 245 Hz
resolution 0.96 Hz
TXOFF +50 Hz
Time delay extent: 38250 meters
---------------------------------------------------------------------
1/2-usec
baud 1/2 usec
code 255
FFT 256
ncoh 16
bandwidth 490.2 Hz
resolution 1.9 Hz
TXOFF +50 Hz
---------------------------------------------------------------------
NOTE: Data should be moved to the appropriate subdirectories in
aardvark:/export/data0/a5693/raw/
OSOD and predicts will be on aardvark:
...not available yet...
POINTING
TX Offsets
Date (UTC) DOY hhmmss RA Dec Macro LHA Dec RTT OSOD
... to be added ...
Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.??
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
==============================================================================
Receive TX
Setup hops dwell code ncoh FFT runs start -stop OSOD offset Poln Notes
------------------------------------------------------------------------------
Dr. Lance A. M. Benner | PHONE: (818) 354-7412
Mail Stop 183-601 | FAX: (818) 393-4445
Jet Propulsion Laboratory | email: lance.benner@jpl.nasa.gov
California Institute of Technology | Plan: To live long and prosper
Pasadena, CA 91109-8099
https://echo.jpl.nasa.gov/asteroids/1993EA/1993EA.2022.goldstone.planning.html
Asteroid Radar Astronomy