Goldstone Radar Observations Planning: 2020 SO
2020 SO was discovered on September 17, 2020 by Pan-STARRS 1 at Haleaka on Maui.
This object has a very Earth-like orbit, is approaching with an unusually low
delta-V, and may be the booster from the Surveyor 2 robotic mission to the Moon
that launched in 1966.
This object is making two large, eccentric orbits around the Earth-Moon system between
November 2020-March 2021, after which it will drift back into heliocentric space.
During this interval 2020 SO will make two approaches well within one lunar distance
of Earth:
2020 December 1, distance = 0.00033 au (0.13 lunar distances)
2021 February 2, distance = 0.0015 au (0.58 lunar distances.
The rise/set times overlap times previously scheduled for Goldstone observations of
2000 WO107 and 1988 XB in late November and we plan to devote some of our time to
observations of 2020 SO. The principal goals will be to improve the orbit using
radar astrometry and to understand its physical properties in the hope of understanding
whether it is a natural object or an old rocket body.
Due to the close approach distances, the observations in November will be bistatic with transmission
at DSS-14 and reception at DSS-13. Additional observations at Goldstone are possible
on later dates in December, January, and February already scheduled for Ryugu, 2014 SD224,
1998 OK1, 1993 BX3, 2010 JE87, and 2016 CL136.
Optical astrometry is necessary to reduce the pointing uncertainties sufficiently for
radar observations of this object.
Wikipedia article on 2020 SO:
https://en.wikipedia.org/wiki/2020_SO
Orbital and Physical Characteristics
Name 2020 SO
Asteroid number not numbered
Discoverer Pan-STARRS 1
Discovery date 2020 Sep 17
orbit type Apollo
Close approach distance 0.00033 au and 0.0015 au
Close approach date 2020 Dec 01 and 2021 Feb 02
semimajor axis 1.035 au
eccentricity 0.0359
inclination 0.14
Orbital period 1.035 years
perihelion distance 0.9976 au
aphelion distance 1.072 au
MOID 0.0116 au
absolute magnitude (H) 28.6
diameter ~10 meters
optical albedo unknown
rotation period ~9 seconds (P. Birtwhistle)
lightcurve amplitude unknown
pole direction unknown
spectral class unknown
PHA? No
Last update: 2020 December 3
Goldstone Radar Data from Near-Earth Object 2020 SO
Bistatic echo power spectrum from 2020 SO obtained on November 30, 2020. The resolution is 10 Hz.
DSS-14 was used to transmit and DSS-13 was used to receive. These observations used a transmit offset of
500 Hz, so the vertical lines at -500 Hz correspond to the DC spike.
Echo power is plotted in arbitrary units because the data have not yet been properly normalized.
Bistatic echo power spectrum from 2020 SO obtained on November 30, 2020. The resolution is 50 Hz.
DSS-14 was used to transmit and DSS-13 was used to receive. These observations used a transmit
offset of 1000 Hz, so the vertical lines at -1000 Hz correspond to the DC spike.
The bandwidth of the echo exceeds 1000 Hz and implies very rapid rotation. If this object is
an old Centaur stage from Surveyor 2, then given the 10 meter length of the rocket, the rotation
period could be on the order of only about 3-4 seconds. However, the data span several minutes and
many rotations, so the echo has smeared in Doppler frequency and widened. The SNRs are also very
strong so impulse response has caused apparent widening at the positive and negative edges.
Finer time resolution is necessary to see details of the echo power spectra.
The shape of the echo power spectra above,
which were obtained at different times, largely persists, and is puzzling for a rotating object.
One possibility that warrants further investigation is if the shape of the echo could result from
a Centaur stage in rapid, non-principal axis rotation.
Bistatic delay-Doppler echoes from 2020 SO obtained on November 30, 2020.
DSS-14 was used to transmit and DSS-13 was used to receive.
Top: 1 usec x 61 Hz
Bottom: 0.125 usec x 246 Hz
Discovery M.P.E.C.
2020 SO
https://www.minorplanetcenter.net/mpec/K20/K20S78.html
SNR Calculations
Goldstone SNRs
2020 SO: D = 0.01 km, P = 0.5 h, OC albedo = 0.1
<-Monostatic-> DSS14>DSS13
DOY start date window RA, dec dist runs SNR/day SNR/run SNR/RTT
313 2020 Nov 08 02:15-11:12 32, +3 0.010 1608 71 2
314 2020 Nov 09 02:12-11:09 32, +3 0.010 1655 80 2
315 2020 Nov 10 02:08-11:07 32, +3 0.010 1706 89 2
316 2020 Nov 11 02:05-11:05 33, +3 0.009 1761 100 3
317 2020 Nov 12 02:02-11:03 33, +4 0.009 1820 110 3
318 2020 Nov 13 01:59-11:01 33, +4 0.009 1884 130 3
319 2020 Nov 14 01:56-11:00 34, +4 0.008 1955 150 4
320 2020 Nov 15 01:53-10:59 34, +4 0.008 2033 170 4
321 2020 Nov 16 01:51-10:58 35, +5 0.008 2120 200 5
322 2020 Nov 17 01:48-10:57 35, +5 0.007 2217 240 5
323 2020 Nov 18 01:45-10:57 36, +5 0.007 2327 290 6
324 2020 Nov 19 01:43-10:57 37, +6 0.007 2453 350 8
325 2020 Nov 20 01:41-10:59 38, +6 0.006 2600 430 9
326 2020 Nov 21 01:40-11:00 39, +7 0.006 2772 540 11 3
327 2020 Nov 22 01:38-11:03 40, +8 0.006 2978 710 14 3
328 2020 Nov 23 01:37-11:07 41, +9 0.005 3230 950 18 4
329 2020 Nov 24 01:37-11:13 43, +10 0.005 3547 1300 24 6
330 2020 Nov 25 01:38-11:20 45, +11 0.004 3958 2000 34 8 Overlaps 2017 WJ16; 2020 SO not scheduled
331 2020 Nov 26 01:40-11:30 47, +12 0.004 4518 3200 52 13
332 2020 Nov 27 01:44-11:45 51, +14 0.003 5331 5900 87 22 Overlaps 2000 WO107; 2020 SO not scheduled
333 2020 Nov 28 01:52-12:08 55, +16 0.003 6642 13000 170 42 Overlaps 2000 WO107; 2020 SO not scheduled
334 2020 Nov 29 02:06-12:46 62, +20 0.002 9155 43000 480 120 Overlaps 2000 WO107; 2020 SO not scheduled; Scheduled at Canberra
335 2020 Nov 30 02:40-14:32 79, +27 0.001 16424 360000 3100 770 Overlaps 2000 WO107 SCHEDULED 0500-1340; Also scheduled at Canberra
...slightly too far south on Dec. 1 to track at Goldstone...
337-338 2020 Dec 02-03 23:41-04:30 346, -26 0.002 4580 36000 560 140
338-339 2020 Dec 03-04 23:43-05:26 355, -22 0.003 3982 11000 190 47
339-340 2020 Dec 04-05 23:44-05:55 359, -19 0.003 3510 5300 97 24
340-341 2020 Dec 05-06 23:44-06:13 3, -17 0.004 3167 3000 58 14
341-342 2020 Dec 06-07 23:43-06:26 5, -16 0.004 2910 1900 39 10
342-343 2020 Dec 07-08 23:41-06:35 7, -14 0.005 2711 1300 28 7
343-344 2020 Dec 08-09 23:39-06:42 9, -13 0.005 2551 970 21 5
344-345 2020 Dec 09-10 23:37-06:47 10, -13 0.005 2422 750 17 4
345-346 2020 Dec 10-11 23:35-06:51 11, -12 0.006 2314 590 14 3
346-347 2020 Dec 11-12 23:32-06:55 13, -11 0.006 2223 480 11 3 Overlaps Ryugu on Dec. 12 03:20-05:10
347-348 2020 Dec 12-13 23:30-06:57 14, -10 0.006 2147 410 10
348-349 2020 Dec 13-14 23:27-07:00 14, -10 0.007 2081 350 8 Overlaps Ryugu/Geminids on Dec 14: 03:10-04:55
349-350 2020 Dec 14-15 23:24-07:02 15, -9 0.007 2025 300 7
350-351 2020 Dec 15-16 23:22-07:03 16, -9 0.007 1977 260 7 Overlaps Ryugu on Dec 16: 02:50-04:25
351-352 2020 Dec 16-17 23:19-07:05 17, -8 0.007 1935 240 6
352-353 2020 Dec 17-18 23:16-07:06 18, -7 0.007 1899 210 5
353-354 2020 Dec 18-19 23:14-07:07 19, -7 0.008 1869 200 5
354-355 2020 Dec 19-20 23:11-07:08 19, -6 0.008 1844 180 5
355-356 2020 Dec 20-21 23:09-07:09 20, -6 0.008 1822 170 4
356-357 2020 Dec 21-22 23:06-07:10 21, -5 0.008 1805 160 4
357-358 2020 Dec 22-23 23:03-07:10 22, -5 0.008 1791 150 4 Overlaps 2014 SD224 briefly
358-359 2020 Dec 23-24 23:01-07:11 22, -4 0.008 1780 140 4
359-360 2020 Dec 24-25 22:58-07:11 23, -4 0.008 1773 140 4
360-361 2020 Dec 25-26 22:56-07:12 24, -4 0.008 1768 130 4
361-362 2020 Dec 26-27 22:53-07:12 25, -3 0.009 1766 130 3
362-363 2020 Dec 27-28 22:50-07:13 25, -3 0.009 1767 130 3 Overlaps 2014 SD224
363-364 2020 Dec 28-29 22:48-07:13 26, -2 0.009 1770 130 3
364-365 2020 Dec 29-30 22:45-07:14 27, -2 0.009 1776 130 3
365-366 2020 Dec 30-31 22:43-07:14 28, -1 0.009 1785 130 3
366-001 2020 Dec 31-01 22:40-07:14 28, -1 0.009 1796 130 3
2021 Jan 01-02 22:38-07:15 29, 0 0.009 1809 130 3
2021 Jan 02-03 22:36-07:15 30, 0 0.009 1825 130 3
2021 Jan 03-04 22:33-07:16 30, 0 0.009 1843 130 3
2021 Jan 04-05 22:31-07:16 31, +1 0.009 1865 140 3
2021 Jan 05-06 22:29-07:17 32, +1 0.008 1889 140 4
2021 Jan 06-07 22:26-07:18 33, +2 0.008 1916 150 4
2021 Jan 07-08 22:24-07:18 34, +2 0.008 1946 160 4
2021 Jan 08-09 22:22-07:19 34, +3 0.008 1979 160 4
2021 Jan 09-10 22:20-07:21 35, +3 0.008 2017 170 4
2021 Jan 10-11 22:18-07:22 36, +4 0.008 2059 180 4
2021 Jan 11-12 22:16-07:24 37, +5 0.008 2106 200 5
2021 Jan 12-13 22:15-07:26 38, +5 0.008 2158 210 5
2021 Jan 13-14 22:13-07:28 39, +6 0.008 2217 230 5
2021 Jan 14-15 22:12-07:31 41, +7 0.007 2283 250 6
2021 Jan 15-16 22:11-07:34 42, +7 0.007 2358 280 6
2021 Jan 16-17 22:11-07:38 43, +8 0.007 2442 320 7
2021 Jan 17-18 22:10-07:43 45, +9 0.007 2538 360 8
2021 Jan 18-19 22:10-07:47 46, +10 0.007 2647 410 9
2021 Jan 19-20 22:11-07:53 48, +11 0.006 2774 480 10
2021 Jan 20-21 22:12-08:00 50, +12 0.006 2920 570 11 DSS14>DSS13
2021 Jan 21-22 22:13-08:08 52, +13 0.006 3091 700 13 SNR/RTT
2021 Jan 22-23 22:16-08:17 55, +14 0.005 3294 860 16 4 Overlaps 1998 OK1
2021 Jan 23-24 22:19-08:28 57, +15 0.005 3538 1100 20 5
2021 Jan 24-25 22:24-08:41 61, +17 0.005 3835 1500 25 6
2021 Jan 25-26 22:31-08:57 64, +18 0.004 4204 2000 33 8 Overlaps 1993 BX3
2021 Jan 26-27 22:40-09:17 69, +20 0.004 4672 2900 46 11
2021 Jan 27-28 22:53-09:42 75, +22 0.004 5282 4400 66 16 Overlaps 1993 BX3 briefly
2021 Jan 28-29 23:12-10:16 82, +24 0.003 6102 7400 100 25 Overlaps 1993 BX3
2021 Jan 29-30 23:41-11:03 93, +27 0.003 7241 14000 170 42
2021 Jan 31 00:27-12:11 108, +29 0.002 8854 29000 330 82
32 2021 Feb 01 01:50-13:48 132, +28 0.002 10977 69000 720 180 Overlaps 1993 BX3
33 2021 Feb 02 04:17-15:40 168, +20 0.002 12503 150000 1500 370 Overlaps 2016 CL136; Scheduled at Canberra
34 2021 Feb 03 07:47-17:07 207, 0 0.001 10498 150000 1600 400
35 2021 Feb 04 11:09-17:59 239, -17 0.002 6496 54000 730 180 Scheduled at Canberra
36 2021 Feb 05 13:34-18:35 261, -26 0.002 3872 17000 290 72
37 2021 Feb 06 15:05-19:04 277, -29 0.003 2572 6800 140 35
38 2021 Feb 07 16:01-19:32 288, -30 0.003 1962 3400 79 20
39 2021 Feb 08 16:35-19:59 296, -30 0.004 1680 2000 51 13
40 2021 Feb 09 16:57-20:24 303, -30 0.004 1549 1400 36 9
41 2021 Feb 10 17:10-20:47 309, -30 0.004 1485 980 26 6
42 2021 Feb 11 17:19-21:08 313, -29 0.005 1452 750 21 5
43 2021 Feb 12 17:26-21:26 317, -29 0.005 1433 600 17 4
44 2021 Feb 13 17:30-21:42 321, -28 0.005 1421 490 14
45 2021 Feb 14 17:33-21:56 324, -27 0.006 1412 410 12
46 2021 Feb 15 17:34-22:09 327, -27 0.006 1404 350 10
47 2021 Feb 16 17:35-22:20 329, -26 0.006 1396 310 9
48 2021 Feb 17 17:36-22:30 332, -25 0.006 1389 270 8
49 2021 Feb 18 17:35-22:39 334, -25 0.007 1382 240 7
50 2021 Feb 19 17:35-22:47 336, -24 0.007 1375 210 6
51 2021 Feb 20 17:34-22:54 337, -23 0.007 1368 190 6
52 2021 Feb 21 17:32-23:01 339, -23 0.007 1361 170 5
53 2021 Feb 22 17:31-23:06 340, -22 0.007 1355 160 5
54 2021 Feb 23 17:29-23:11 342, -22 0.008 1348 150 4
55 2021 Feb 24 17:27-23:16 343, -21 0.008 1341 130 4
56 2021 Feb 25 17:25-23:20 344, -20 0.008 1334 120 4
57 2021 Feb 26 17:22-23:24 346, -20 0.008 1327 120 3
58 2021 Feb 27 17:20-23:27 347, -19 0.008 1320 110 3
59 2021 Feb 28 17:17-23:30 348, -19 0.009 1313 100 3
60 2021 Mar 01 17:14-23:33 349, -18 0.009 1307 94 3
61 2021 Mar 02 17:11-23:36 350, -18 0.009 1300 88 3
62 2021 Mar 03 17:08-23:38 351, -17 0.009 1293 83 3
63 2021 Mar 04 17:05-23:40 351, -17 0.009 1286 78 2
64 2021 Mar 05 17:02-23:42 352, -16 0.009 1280 73 2
65 2021 Mar 06 16:59-23:44 353, -15 0.010 1273 69 2
The rotation period of 0.5 h is a guess. If this object is the booster from Surveyor 2,
then the rotation period could be very different, and the radar albedo (and the SNRs)
could be several times higher.
Update on 2020 Dec 2: photometry strongly suggests that the rotation period is roughly 9 seconds.
Consequently, and all else being equal, the SNRs will be about 7% of the values above.
The SNRs need to be further calibrated by the radar albedo, which has not yet been estimated.
The schedules for 1988 XB and 2020 SO do not overlap. Neither does the schedule for 2018 PK21.
Track Assignments
DOY BOA BOT EOT EOA
334 1545 1915 DSS-35 2020 SO and 2000 WO107 AUSTRALIA; receive at ATCA
334 1725 2005 DSS-36 2020 SO and 2000 WO107 AUSTRALIA; receive at ATCA
335 0500 1340 DSS-14 2020 SO Overlaps 2000 WO107
335 0500 1340 DSS-13 2020 SO
335 1345 1525 DSS-35 2020 SO and 2000 WO107 AUSTRALIA; receive at ATCA
33 1330 1905 DSS-35 2020 SO AUSTRALIA; receive at ATCA
35 1520 1730 DSS-35 2020 SO AUSTRALIA; receive at ATCA
Goldstone tracks (DSS-14 and DSS-13):
UT UT PST Duration Round-trip
DOY Date TX Window TX Window hh:mm time (sec) SNR/run
334 Nov 29 DSS-35 1545-1915 0745-1115 3:15 ~2 seconds 2020 SO and 2000 WO107: receive at ATCA
334 Nov 29 DSS-36 1725-2005 0925-1205 2:40 ~2 seconds 2020 SO and 2000 WO107: receive at ATCA
335 Nov 30 DSS-14 0500-1340 2100-0540 Nov 29-30 8:40 ~1 second a lot RTT varies considerably. Overlaps 2000 WO107
335 Nov 30 DSS-13 0500-1340 2100-0540 8:40
335 Nov 30 DSS-35 1345-1525 0545-0725 1:40 ~1 second 2020 SO and 2000 WO107: receive at ATCA
33 Feb 2 DSS-35 1330-1905 0530-1105 5:35 ~2 seconds 2020 SO: receive at ATCA
35 Feb 4 DSS-35 1520-1730 0720-0930 2:10 ~2 seconds 2020 SO: receive at ATCA
Plans for Nov. 30:
0500-0550 DSS-14 > DSS-13 bistatic CW; Svetloe will eavesdrop.
0555-0625 DSS-14 > Svetloe (Russia) BPC 10 usec; eavesdrop at DSS-13 (in collaboration with Yuri Bondarenko).
0630-0830 DSS-14 > DSS-13. Tests by Clement and Joseph.
0830-end DSS-14 monostatic observations of 2000 WO107 and 1988 XB.
Due to the asteroid's very close approach,
the pointing uncertainties will nearly double between the start and end of the Nov. 30 track, so
we're going to observe 2020 SO at the beginning of the track when the uncertainties are smallest.
Uncertainties
2020 SO
JPL/Horizons solution 56, # obs: 353 (102 days)
2020 Nov 29
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-29 15:00 * 64.46009 21.17015 0.00189848063096 2.311 0.51 1.87 0.000078
2020-Nov-29 16:00 * 65.08336 21.30264 0.00187301146270 2.437 0.52 1.87 0.000078
2020-Nov-29 17:00 * 65.78855 21.45207 0.00184601148910 2.582 0.52 1.88 0.000079
2020-Nov-29 18:00 * 66.56706 21.62386 0.00181712028297 2.747 0.52 1.88 0.000080
2020-Nov-29 19:00 * 67.40739 21.82269 0.00178608365139 2.933 0.52 1.89 0.000081
2020-Nov-29 20:00 * 68.29575 22.05231 0.00175276523609 3.142 0.53 1.91 0.000082
2020-Nov-29 21:00 * 69.21685 22.31541 0.00171715105522 3.373 0.53 1.94 0.000082
2020-Nov-29 22:00 * 70.15465 22.61347 0.00167934725975 3.627 0.55 1.99 0.000083
2020-Nov-29 23:00 * 71.09317 22.94667 0.00163957154298 3.902 0.57 2.06 0.000084
2020-Nov-30 00:00 * 72.01737 23.31375 0.00159813874310 4.200 0.59 2.15 0.000085
2020-Nov-30 01:00 Cm 72.91406 23.71193 0.00155544126723 4.518 0.63 2.28 0.000086
2020-Nov-30 02:00 Am 73.77284 24.13689 0.00151192508549 4.856 0.67 2.43 0.000087
2020-Nov-30 03:00 m 74.58713 24.58280 0.00146806223213 5.212 0.72 2.61 0.000088
2020-Nov-30 04:00 m 75.35517 25.04248 0.00142432102353 5.586 0.78 2.82 0.000089
2020-Nov-30 05:00 m 76.08084 25.50765 0.00138113555138 5.977 0.84 3.04 0.000090
2020-Nov-30 06:00 m 76.77440 25.96947 0.00133887638191 6.385 0.90 3.28 0.000091
2020-Nov-30 07:00 m 77.45274 26.41911 0.00129782469831 6.813 0.97 3.52 0.000093
2020-Nov-30 08:00 m 78.13924 26.84849 0.00125815223757 7.264 1.03 3.76 0.000094
2020-Nov-30 09:00 m 78.86312 27.25106 0.00121990917174 7.744 1.09 3.98 0.000096
2020-Nov-30 10:00 m 79.65818 27.62244 0.00118302149220 8.263 1.15 4.17 0.000098
2020-Nov-30 11:00 m 80.56128 27.96089 0.00114729850087 8.832 1.19 4.33 0.000099
2020-Nov-30 12:00 m 81.61062 28.26743 0.00111244984018 9.470 1.22 4.45 0.000101
2020-Nov-30 13:00 m 82.84414 28.54563 0.00107811034459 10.197 1.24 4.51 0.000103
2020-Nov-30 14:00 Nm 84.29841 28.80112 0.00104387012352 11.038 1.24 4.52 0.000105
- - - - - - - - - -
JPL/Horizons solution 52, # obs: 334 (80 days)
2020 Nov 28
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-29 15:00 * 64.46028 21.16952 0.00189831851118 4.445 0.87 3.15 0.000137
2020-Nov-29 16:00 * 65.08359 21.30201 0.00187284859585 4.691 0.86 3.13 0.000138
2020-Nov-29 17:00 * 65.78883 21.45144 0.00184584780486 4.971 0.86 3.12 0.000139
2020-Nov-29 18:00 * 66.56740 21.62323 0.00181695570939 5.288 0.85 3.10 0.000141
2020-Nov-29 19:00 * 67.40780 21.82205 0.00178591811423 5.644 0.85 3.10 0.000142
2020-Nov-29 20:00 * 68.29623 22.05167 0.00175259865777 6.040 0.86 3.11 0.000143
2020-Nov-29 21:00 * 69.21741 22.31478 0.00171698335319 6.477 0.87 3.15 0.000144
2020-Nov-29 22:00 * 70.15530 22.61285 0.00167917834463 6.955 0.89 3.23 0.000146
2020-Nov-29 23:00 * 71.09392 22.94606 0.00163940131653 7.472 0.92 3.35 0.000147
2020-Nov-30 00:00 * 72.01823 23.31315 0.00159796709628 8.028 0.97 3.52 0.000149
2020-Nov-30 01:00 Cm 72.91503 23.71135 0.00155526807852 8.622 1.03 3.74 0.000150
2020-Nov-30 02:00 Am 73.77392 24.13634 0.00151175021976 9.251 1.11 4.02 0.000152
2020-Nov-30 03:00 m 74.58834 24.58228 0.00146788554004 9.913 1.20 4.35 0.000153
2020-Nov-30 04:00 m 75.35650 25.04199 0.00142414234176 10.606 1.30 4.72 0.000155
2020-Nov-30 05:00 m 76.08230 25.50720 0.00138095470337 11.329 1.41 5.13 0.000157
2020-Nov-30 06:00 m 76.77599 25.96906 0.00133869317923 12.084 1.53 5.56 0.000160
2020-Nov-30 07:00 m 77.45447 26.41874 0.00129763894231 12.872 1.65 5.98 0.000162
2020-Nov-30 08:00 m 78.14113 26.84817 0.00125796372125 13.701 1.76 6.39 0.000165
2020-Nov-30 09:00 m 78.86518 27.25079 0.00121971768156 14.580 1.86 6.77 0.000167
2020-Nov-30 10:00 m 79.66043 27.62222 0.00118282681000 15.527 1.95 7.09 0.000170
2020-Nov-30 11:00 m 80.56375 27.96071 0.00114710040594 16.562 2.02 7.34 0.000173
2020-Nov-30 12:00 m 81.61336 28.26728 0.00111224811181 17.717 2.06 7.50 0.000176
2020-Nov-30 13:00 m 82.84721 28.54551 0.00107790476532 19.028 2.08 7.56 0.000179
2020-Nov-30 14:00 Nm 84.30187 28.80103 0.00104366048371 20.541 2.07 7.51 0.000183
- - - - - - - - - - -
JPL/Horizons solution 49
2020 Nov 25
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-29 15:00 * 64.45713 21.16802 0.00189864393579 12.498 2.07 7.53 0.000340
2020-Nov-29 16:00 * 65.08026 21.30047 0.00187317695135 13.146 2.05 7.44 0.000343
2020-Nov-29 17:00 * 65.78528 21.44986 0.00184617905425 13.881 2.02 7.34 0.000346
2020-Nov-29 18:00 * 66.56362 21.62160 0.00181728981511 14.711 2.00 7.26 0.000349
2020-Nov-29 19:00 * 67.40374 21.82038 0.00178625504614 15.639 1.98 7.20 0.000352
2020-Nov-29 20:00 * 68.29188 22.04994 0.00175293840201 16.669 1.98 7.19 0.000355
2020-Nov-29 21:00 * 69.21274 22.31298 0.00171732592156 17.804 2.00 7.27 0.000358
2020-Nov-29 22:00 * 70.15026 22.61097 0.00167952378394 19.041 2.05 7.44 0.000361
2020-Nov-29 23:00 * 71.08850 22.94409 0.00163974971726 20.381 2.13 7.74 0.000364
2020-Nov-30 00:00 * 72.01239 23.31108 0.00159831859975 21.820 2.25 8.16 0.000368
2020-Nov-30 01:00 Cm 72.90875 23.70916 0.00155562288178 23.353 2.40 8.74 0.000371
2020-Nov-30 02:00 Am 73.76717 24.13401 0.00151210857742 24.977 2.60 9.45 0.000375
2020-Nov-30 03:00 m 74.58110 24.57981 0.00146824776229 26.684 2.83 10.30 0.000379
2020-Nov-30 04:00 m 75.34874 25.03935 0.00142450878823 28.470 3.10 11.26 0.000384
2020-Nov-30 05:00 m 76.07401 25.50439 0.00138132577274 30.332 3.38 12.30 0.000388
2020-Nov-30 06:00 m 76.76714 25.96606 0.00133906929488 32.272 3.68 13.38 0.000394
2020-Nov-30 07:00 m 77.44502 26.41555 0.00129802053491 34.295 3.98 14.45 0.000400
2020-Nov-30 08:00 m 78.13106 26.84479 0.00125835120928 36.417 4.25 15.46 0.000406
2020-Nov-30 09:00 m 78.85444 27.24721 0.00122011145123 38.665 4.50 16.36 0.000412
2020-Nov-30 10:00 m 79.64896 27.61846 0.00118322719565 41.077 4.71 17.11 0.000419
2020-Nov-30 11:00 m 80.55149 27.95679 0.00114750767184 43.709 4.86 17.65 0.000427
2020-Nov-30 12:00 m 81.60018 28.26321 0.00111266243585 46.634 4.94 17.96 0.000434
2020-Nov-30 13:00 m 82.83300 28.54132 0.00107832622436 49.945 4.95 18.00 0.000442
2020-Nov-30 14:00 Nm 84.28645 28.79676 0.00104408903987 53.754 4.88 17.73 0.000449
- - - - - - - - - -
JPL/Horizons solution 48, # obs: 284 (86 days)
2020 Nov 24
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-29 15:00 * 64.44967 21.16445 0.00189929059592 36.797 5.22 18.98 0.000888
2020-Nov-29 16:00 * 65.07241 21.29682 0.00187382909971 38.555 5.12 18.61 0.000896
2020-Nov-29 17:00 * 65.77698 21.44613 0.00184683656039 40.546 5.01 18.22 0.000904
2020-Nov-29 18:00 * 66.55481 21.61778 0.00181795255076 42.788 4.92 17.87 0.000911
2020-Nov-29 19:00 * 67.39438 21.81645 0.00178692290346 45.293 4.85 17.62 0.000918
2020-Nov-29 20:00 * 68.28189 22.04590 0.00175361131314 48.071 4.82 17.53 0.000926
2020-Nov-29 21:00 * 69.20206 22.30880 0.00171800387882 51.127 4.86 17.67 0.000933
2020-Nov-29 22:00 * 70.13884 22.60664 0.00168020685943 54.460 4.98 18.09 0.000940
2020-Nov-29 23:00 * 71.07627 22.93958 0.00164043808053 58.067 5.19 18.85 0.000948
2020-Nov-30 00:00 * 71.99930 23.30636 0.00159901253191 61.939 5.50 19.99 0.000956
2020-Nov-30 01:00 Cm 72.89473 23.70420 0.00155632278440 66.066 5.92 21.53 0.000965
2020-Nov-30 02:00 Am 73.75218 24.12879 0.00151281497450 70.432 6.45 23.45 0.000974
2020-Nov-30 03:00 m 74.56508 24.57429 0.00146896129417 75.023 7.08 25.73 0.000984
2020-Nov-30 04:00 m 75.33164 25.03351 0.00142523019631 79.823 7.79 28.30 0.000996
2020-Nov-30 05:00 m 76.05578 25.49820 0.00138205587523 84.825 8.55 31.07 0.001008
2020-Nov-30 06:00 m 76.74774 25.95950 0.00133980895427 90.029 9.33 33.93 0.001021
2020-Nov-30 07:00 m 77.42439 26.40861 0.00129877061900 95.449 10.11 36.73 0.001036
2020-Nov-30 08:00 m 78.10913 26.83746 0.00125911254832 101.125 10.83 39.35 0.001052
2020-Nov-30 09:00 m 78.83113 27.23951 0.00122088479415 107.123 11.45 41.63 0.001069
2020-Nov-30 10:00 m 79.62416 27.61039 0.00118401316814 113.545 11.96 43.46 0.001087
2020-Nov-30 11:00 m 80.52504 27.94839 0.00114830673836 120.534 12.30 44.72 0.001105
2020-Nov-30 12:00 m 81.57190 28.25454 0.00111347486645 128.278 12.46 45.30 0.001124
2020-Nov-30 13:00 m 82.80260 28.53243 0.00107915206620 137.019 12.41 45.12 0.001143
2020-Nov-30 14:00 Nm 84.25361 28.78771 0.00104492809174 147.048 12.13 44.10 0.001161
- - - - - - - - - -
JPL/Horizons solution 46, # obs: 264 (84 days)
2020 Nov 22
Hourly intervals:
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-29 15:00 * 64.44277 21.16146 0.00189986938806 51.550 7.10 25.82 0.001218
2020-Nov-29 16:00 * 65.06515 21.29377 0.00187441284148 53.976 6.96 25.28 0.001228
2020-Nov-29 17:00 * 65.76932 21.44300 0.00184742512761 56.723 6.80 24.71 0.001239
2020-Nov-29 18:00 * 66.54670 21.61458 0.00181854582286 59.813 6.66 24.21 0.001249
2020-Nov-29 19:00 * 67.38576 21.81316 0.00178752077992 63.267 6.56 23.83 0.001259
2020-Nov-29 20:00 * 68.27271 22.04250 0.00175421373121 67.096 6.52 23.69 0.001269
2020-Nov-29 21:00 * 69.19226 22.30528 0.00171861083156 71.307 6.57 23.87 0.001279
2020-Nov-29 22:00 * 70.12837 22.60298 0.00168081841317 75.900 6.72 24.44 0.001289
2020-Nov-29 23:00 * 71.06507 22.93576 0.00164105439050 80.870 7.01 25.48 0.001299
2020-Nov-30 00:00 * 71.98732 23.30236 0.00159963385453 86.205 7.44 27.05 0.001310
2020-Nov-30 01:00 Cm 72.88192 23.69999 0.00155694948485 91.889 8.02 29.16 0.001322
2020-Nov-30 02:00 Am 73.73848 24.12435 0.00151344752803 97.903 8.75 31.81 0.001334
2020-Nov-30 03:00 m 74.55045 24.56958 0.00146960027997 104.226 9.62 34.95 0.001348
2020-Nov-30 04:00 m 75.31604 25.02852 0.00142587628327 110.837 10.59 38.49 0.001363
2020-Nov-30 05:00 m 76.03917 25.49289 0.00138270979951 117.724 11.64 42.31 0.001380
2020-Nov-30 06:00 m 76.73006 25.95387 0.00134047148954 124.886 12.72 46.23 0.001399
2020-Nov-30 07:00 m 77.40561 26.40264 0.00129944254094 132.345 13.78 50.08 0.001419
2020-Nov-30 08:00 m 78.08918 26.83114 0.00125979459580 140.151 14.76 53.65 0.001440
2020-Nov-30 09:00 m 78.80993 27.23285 0.00122157762979 148.397 15.62 56.77 0.001463
2020-Nov-30 10:00 m 79.60162 27.60342 0.00118471734062 157.220 16.30 59.24 0.001487
2020-Nov-30 11:00 m 80.50102 27.94113 0.00114902264856 166.818 16.76 60.91 0.001512
2020-Nov-30 12:00 m 81.54621 28.24702 0.00111420273814 177.447 16.96 61.65 0.001538
2020-Nov-30 13:00 m 82.77503 28.52472 0.00107989192095 189.435 16.88 61.34 0.001564
2020-Nov-30 14:00 Nm 84.22385 28.77987 0.00104567972679 203.184 16.47 59.86 0.001589
Daily intervals:
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-25 00:00 *m 44.55955 10.25948 0.00460504797174 3.333 1.51 5.50 0.000693
2020-Nov-26 00:00 *m 46.93610 11.57755 0.00412225167258 5.321 1.89 6.86 0.000755
2020-Nov-27 00:00 *m 50.02158 13.23617 0.00359735813047 8.806 2.44 8.86 0.000835
2020-Nov-28 00:00 *m 54.26391 15.42041 0.00301704668443 15.363 3.26 11.85 0.000941
2020-Nov-29 00:00 *m 60.50994 18.46633 0.00235974913247 30.162 3.92 14.23 0.001076
2020-Nov-30 00:00 * 71.98732 23.30236 0.00159963385453 86.205 7.44 27.05 0.001310
2020-Dec-01 00:00 * 118.74287 30.65135 0.00064352071571 619.352 23.95 87.04 0.001657
2020-Dec-02 00:00 * 316.75579 -35.38937 0.00089682298079 231.198 19.36 70.36 0.001604
2020-Dec-03 00:00 * 345.34113 -26.42392 0.00179198669968 20.234 6.98 25.37 0.001237
2020-Dec-04 00:00 * 354.50870 -21.97039 0.00250523822274 26.382 2.78 10.09 0.001063
2020-Dec-05 00:00 * 359.55097 -19.20522 0.00311113099809 37.349 0.96 3.49 0.000973
2020-Dec-06 00:00 * 2.92556 -17.23701 0.00364338658291 43.319 0.28 1.03 0.000928
2020-Dec-07 00:00 * 5.42926 -15.71858 0.00412025258087 47.068 0.81 2.94 0.000910
2020-Dec-08 00:00 * 7.41065 -14.48295 0.00455300022493 49.707 1.26 4.59 0.000911
2020-Dec-09 00:00 * 9.05106 -13.43798 0.00494920550586 51.732 1.61 5.86 0.000925
2020-Dec-10 00:00 * 10.45635 -12.52780 0.00531424617367 53.392 1.89 6.88 0.000951
2020-Dec-11 00:00 * 11.69360 -11.71607 0.00565206891276 54.827 2.12 7.71 0.000985
.
.
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2021-Jan-25 00:00 *m 61.41813 16.90240 0.00481523337602 320.868 10.18 37.00 0.006126
2021-Jan-26 00:00 *m 65.28471 18.50213 0.00445686482396 365.185 10.55 38.34 0.006350
2021-Jan-27 00:00 *m 69.97682 20.29004 0.00407671606991 424.140 10.47 38.05 0.006577
2021-Jan-28 00:00 * 75.84736 22.28522 0.00367502955636 505.522 9.39 34.13 0.006785
2021-Jan-29 00:00 * 83.47543 24.47183 0.00325326010650 622.655 6.17 22.42 0.006934
2021-Jan-30 00:00 * 93.85344 26.71185 0.00281574745978 799.145 2.70 9.80 0.006932
2021-Jan-31 00:00 * 108.69518 28.46950 0.00237405031233 1075.941 22.49 81.72 0.006568
2021-Feb-01 00:00 * 130.57044 28.02456 0.00195804834803 1505.484 69.46 252.46 0.005361
2021-Feb-02 00:00 * 161.00635 21.32768 0.00163963565624 2027.317 153.10 556.45 0.002444
2021-Feb-03 00:00 * 195.51718 5.61753 0.00154266110503 2124.581 191.14 694.70 0.002380
2021-Feb-04 00:00 * 226.31915 -11.35134 0.00173120294702 1491.329 104.71 380.56 0.006346
2021-Feb-05 00:00 * 250.10532 -21.86283 0.00210612161985 830.192 23.05 83.78 0.007746
- - - - - - - - - -
JPL/Horizons solution 16, # obs: 78 (55 days)
2020 Oct 13
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta POS_3sigma DOP_S_3sig DOP_X_3sig RT_delay_3sig
2020-Nov-25 00:00 *m 44.51950 10.24142 0.00462359857756 184.160 45.91 166.86 0.021608
2020-Nov-26 00:00 *m 46.87916 11.55141 0.00414239688415 260.494 56.16 204.10 0.023495
2020-Nov-27 00:00 *m 49.93642 13.19700 0.00361951514477 386.304 71.20 258.79 0.025867
2020-Nov-28 00:00 *m 54.12721 15.35869 0.00304185801258 611.033 93.31 339.12 0.028984
2020-Nov-29 00:00 *m 60.25742 18.35998 0.00238785905379 1093.712 105.42 383.15 0.032837
2020-Nov-30 00:00 * 71.28907 23.07375 0.00163344619215 2826.311 203.85 740.89 0.039452
2020-Dec-01 00:00 * 113.76604 30.82814 0.00068549020815 17026.134 553.35 2011.12 0.049325
2020-Dec-02 00:00 * 315.12565 -35.82134 0.00085643365074 6076.139 602.03 2188.06 0.047562
2020-Dec-03 00:00 * 345.52607 -26.47290 0.00176160848751 845.399 189.98 690.47 0.035610
2020-Dec-04 00:00 * 354.88494 -21.89508 0.00247934680567 1641.827 58.34 212.05 0.030343
2020-Dec-05 00:00 * 359.98059 -19.07759 0.00308741960591 1928.249 2.49 9.05 0.027852
2020-Dec-06 00:00 * 3.37661 -17.08075 0.00362066361537 2064.923 28.83 104.76 0.026791
2020-Dec-07 00:00 * 5.89090 -15.54395 0.00409778094954 2144.366 48.87 177.62 0.026615
2020-Dec-08 00:00 * 7.87844 -14.29517 0.00453027012189 2197.609 63.19 229.65 0.027050
2020-Dec-09 00:00 * 9.52300 -13.24003 0.00492583765200 2237.479 74.12 269.38 0.027942
2020-Dec-10 00:00 * 10.93148 -12.32147 0.00528994416465 2270.104 82.87 301.17 0.029192
.
.
2021-Jan-25 00:00 *m 63.96194 17.98451 0.00462066310787 12310.289 431.34 1567.69 0.244799
2021-Jan-26 00:00 *m 68.26795 19.67815 0.00425389940731 14229.250 452.46 1644.43 0.255542
2021-Jan-27 00:00 *m 73.57492 21.56659 0.00386505809121 16868.014 449.81 1634.81 0.266651
2021-Jan-28 00:00 * 80.34389 23.65190 0.00345508373366 20654.334 389.37 1415.13 0.277037
2021-Jan-29 00:00 * 89.34506 25.86238 0.00302700744227 26341.591 195.59 710.86 0.284214
2021-Jan-30 00:00 * 101.90008 27.88748 0.00258875475098 35281.161 317.38 1153.51 0.282464
2021-Jan-31 00:00 * 120.15200 28.68580 0.00216039106497 49659.964 1597.25 5805.14 0.258215
2021-Feb-01 00:00 * 146.41637 25.40635 0.00179126694071 70774.860 4392.60 15964.71 0.181754
2021-Feb-02 00:00 * 179.29645 13.83332 0.00158335654510 88100.791 7734.12 28109.29 0.018014
2021-Feb-03 00:00 * 211.57284 -3.50320 0.00164582341334 76713.853 6403.37 23272.74 0.180092
2021-Feb-04 00:00 * 237.84545 -17.06181 0.00194556493857 48989.756 2433.05 8842.80 0.288521
2021-Feb-05 00:00 * 257.63918 -24.46889 0.00235450232123 28951.883 426.18 1548.91 0.314668
Apparent Magnitudes, Solar Elongations, Lunar Elongations, and Lunar Illumination:
JPL/Horizons solution 48
Date__(UT)__HR:MN R.A._(a-appar)_DEC. delta APmag S-brt S-O-T /r T-O-M/MN_Illu%
2020-Nov-20 00:00 37.36173 6.46226 0.00660835025757 19.002 n.a. 157.6545 /T 94.6/ 28.1324
2020-Nov-21 00:00 38.31596 7.05566 0.00624905688685 18.874 n.a. 157.8227 /T 82.6/ 38.0548
2020-Nov-22 00:00 39.42199 7.73822 0.00587224994025 18.728 n.a. 158.1613 /T 71.2/ 48.1500
2020-Nov-23 00:00 40.71759 8.53007 0.00547509806559 18.558 n.a. 158.7123 /T 60.3/ 58.0290
2020-Nov-24 00:00 42.25715 9.45982 0.00505416283454 18.357 n.a. 159.5354 /T 50.0/ 67.3808
2020-Nov-25 00:00 44.12306 10.56986 0.00460508544141 18.116 n.a. 160.7202 /T 40.2/ 75.9488
2020-Nov-26 00:00 46.44798 11.92650 0.00412203769393 17.820 n.a. 162.4088 /T 30.9/ 83.5098
2020-Nov-27 00:00 49.46214 13.64058 0.00359664217316 17.440 n.a. 164.8444 /T 22.5/ 89.8600
2020-Nov-28 00:00 53.59847 15.91260 0.00301543451673 16.925 n.a. 168.4742 /T 15.1/ 94.8098
2020-Nov-29 00:00 59.66792 19.12062 0.00235663013531 16.147 n.a. 174.1116 /T 9.655/ 98.1857
2020-Nov-30 00:00 70.80507 24.35778 0.00159353386759 15.239 n.a. 175.2022 /L 9.382/ 99.8393
2020-Dec-01 00:00 117.87200 34.14219 0.00062754011117 14.541 n.a. 134.3751 /L 39.4/ 99.6593
2020-Dec-02 00:00 316.68144 -32.85828 0.00091256993032 18.426 n.a. 60.3719 /T 136.7/ 97.5846
2020-Dec-03 00:00 344.73257 -25.29862 0.00180905151808 18.491 n.a. 84.9621 /T 123.5/ 93.6156
2020-Dec-04 00:00 353.98105 -21.21946 0.00252222311693 18.858 n.a. 93.4104 /T 126.4/ 87.8209
2020-Dec-05 00:00 359.09391 -18.62549 0.00312808809409 19.155 n.a. 97.8978 /T 133.5/ 80.3429
2020-Dec-06 00:00 2.52035 -16.75606 0.00366041250704 19.395 n.a. 100.6840 /T 142.4/ 71.4001
2020-Dec-07 00:00 5.06300 -15.30233 0.00413742424203 19.594 n.a. 102.5505 /T 152.2/ 61.2929
2020-Dec-08 00:00 7.07467 -14.11258 0.00457037526652 19.765 n.a. 103.8527 /T 162.2/ 50.4100
2020-Dec-09 00:00 8.73933 -13.10198 0.00496682716002 19.914 n.a. 104.7803 /T 169.4/ 39.2368
2020-Dec-10 00:00 10.16450 -12.21857 0.00533214708029 20.045 n.a. 105.4461 /T 165.8/ 28.3544
2020-Dec-11 00:00 11.41836 -11.42836 0.00567027376082 20.162 n.a. 105.9226 /T 155.0/ 18.4194
2020-Dec-12 00:00 12.54684 -10.70797 0.00598414622955 20.267 n.a. 106.2592 /T 142.4/ 10.1109
2020-Dec-13 00:00 13.58221 -10.04081 0.00627596541472 20.362 n.a. 106.4907 /T 129.2/ 4.0429
2020-Dec-14 00:00 14.54777 -9.41486 0.00654737151874 20.449 n.a. 106.6425 /T 115.8/ 0.6595
2020-Dec-15 00:00 15.46055 -8.82128 0.00679957910482 20.527 n.a. 106.7332 /T 102.3/ 0.1504
2020-Dec-16 00:00 16.33305 -8.25359 0.00703348859765 20.599 n.a. 106.7765 /T 89.1/ 2.4236
2020-Dec-17 00:00 17.17441 -7.70697 0.00724977910455 20.664 n.a. 106.7825 /T 76.2/ 7.1476
2020-Dec-18 00:00 17.99131 -7.17782 0.00744898149449 20.723 n.a. 106.7587 /T 63.6/ 13.8415
2020-Dec-19 00:00 18.78868 -6.66335 0.00763153094045 20.777 n.a. 106.7104 /T 51.6/ 21.9735
2020-Dec-20 00:00 19.57023 -6.16136 0.00779780137990 20.826 n.a. 106.6421 /T 39.9/ 31.0367
2020-Dec-21 00:00 20.33886 -5.67003 0.00794812728809 20.870 n.a. 106.5570 /T 28.8/ 40.5890
2020-Dec-22 00:00 21.09689 -5.18780 0.00808281899152 20.909 n.a. 106.4578 /T 18.3/ 50.2617
2020-Dec-23 00:00 21.84633 -4.71330 0.00820217596794 20.944 n.a. 106.3470 /T 9.759/ 59.7476
2020-Dec-24 00:00 22.58890 -4.24528 0.00830649872945 20.975 n.a. 106.2264 /T 9.900/ 68.7819
2020-Dec-25 00:00 23.32609 -3.78264 0.00839609659791 21.003 n.a. 106.0981 /T 18.4/ 77.1206
2020-Dec-26 00:00 24.05920 -3.32438 0.00847128947173 21.026 n.a. 105.9634 /T 28.7/ 84.5247
2020-Dec-27 00:00 24.78935 -2.86961 0.00853240564592 21.046 n.a. 105.8237 /T 39.4/ 90.7513
2020-Dec-28 00:00 25.51752 -2.41746 0.00857977961828 21.063 n.a. 105.6803 /T 50.5/ 95.5543
2020-Dec-29 00:00 26.24468 -1.96706 0.00861375177100 21.076 n.a. 105.5343 /T 61.8/ 98.6948
2020-Dec-30 00:00 26.97183 -1.51751 0.00863466896132 21.086 n.a. 105.3871 /T 73.3/ 99.9604
2020-Dec-31 00:00 27.70015 -1.06780 0.00864288384733 21.093 n.a. 105.2400 /T 85.1/ 99.1908
2021-Jan-01 00:00 28.43107 -0.61680 0.00863875111145 21.097 n.a. 105.0948 /T 97.1/ 96.3041
2021-Jan-02 00:00 29.16635 -0.16320 0.00862261972877 21.097 n.a. 104.9534 /T 109.3/ 91.3179
2021-Jan-03 00:00 29.90821 0.29446 0.00859482145317 21.095 n.a. 104.8186 /T 121.7/ 84.3623
2021-Jan-04 00:00 30.65935 0.75789 0.00855565644706 21.089 n.a. 104.6933 /T 134.2/ 75.6822
2021-Jan-05 00:00 31.42306 1.22898 0.00850537731406 21.080 n.a. 104.5812 /T 146.9/ 65.6315
2021-Jan-06 00:00 32.20318 1.70983 0.00844417275250 21.068 n.a. 104.4866 /T 159.4/ 54.6627
2021-Jan-07 00:00 33.00419 2.20275 0.00837215187357 21.052 n.a. 104.4144 /T 170.9/ 43.3122
2021-Jan-08 00:00 33.83113 2.71021 0.00828933023859 21.032 n.a. 104.3699 /T 170.7/ 32.1808
2021-Jan-09 00:00 34.68966 3.23483 0.00819561904721 21.008 n.a. 104.3594 /T 158.9/ 21.9020
2021-Jan-10 00:00 35.58595 3.77939 0.00809081949495 20.979 n.a. 104.3892 /T 146.0/ 13.0947
2021-Jan-11 00:00 36.52668 4.34672 0.00797462456534 20.945 n.a. 104.4665 /T 132.9/ 6.2986
2021-Jan-12 00:00 37.51896 4.93979 0.00784662973621 20.906 n.a. 104.5987 /T 119.8/ 1.9060
2021-Jan-13 00:00 38.57041 5.56162 0.00770635197792 20.860 n.a. 104.7936 /T 107.0/ 0.1093
2021-Jan-14 00:00 39.68923 6.21544 0.00755325365456 20.808 n.a. 105.0594 /T 94.5/ 0.8854
2021-Jan-15 00:00 40.88444 6.90470 0.00738676592156 20.749 n.a. 105.4054 /T 82.4/ 4.0210
2021-Jan-16 00:00 42.16626 7.63325 0.00720630612695 20.681 n.a. 105.8416 /T 70.7/ 9.1717
2021-Jan-17 00:00 43.54659 8.40550 0.00701128553164 20.604 n.a. 106.3798 /T 59.5/ 15.9298
2021-Jan-18 00:00 45.03974 9.22666 0.00680110618058 20.517 n.a. 107.0338 /T 48.7/ 23.8820
2021-Jan-19 00:00 46.66333 10.10294 0.00657514768769 20.419 n.a. 107.8207 /T 38.3/ 32.6462
2021-Jan-20 00:00 48.43953 11.04185 0.00633274565314 20.307 n.a. 108.7614 /T 28.4/ 41.8855
2021-Jan-21 00:00 50.39688 12.05267 0.00607316442767 20.181 n.a. 109.8828 /T 18.8/ 51.3045
2021-Jan-22 00:00 52.57298 13.14687 0.00579557074490 20.038 n.a. 111.2196 /T 9.552/ 60.6353
2021-Jan-23 00:00 55.01869 14.33885 0.00549902519161 19.874 n.a. 112.8182 /T 3.057/ 69.6190
2021-Jan-24 00:00 57.80478 15.64671 0.00518252234083 19.687 n.a. 114.7418 /T 9.705/ 77.9876
2021-Jan-25 00:00 61.03212 17.09285 0.00484509998845 19.471 n.a. 117.0782 /T 18.3/ 85.4507
2021-Jan-26 00:00 64.84776 18.70383 0.00448598133675 19.219 n.a. 119.9522 /T 26.7/ 91.6921
2021-Jan-27 00:00 69.47250 20.50834 0.00410470081760 18.922 n.a. 123.5438 /T 34.8/ 96.3782
2021-Jan-28 00:00 75.25185 22.52976 0.00370130089837 18.568 n.a. 128.1229 /T 42.1/ 99.1834
2021-Jan-29 00:00 82.75416 24.76127 0.00327689474129 18.136 n.a. 134.1101 /T 48.3/ 99.8288
2021-Jan-30 00:00 92.95931 27.08504 0.00283521227883 17.598 n.a. 142.1798 /T 52.6/ 98.1300
2021-Jan-31 00:00 107.58427 29.00968 0.00238669991664 16.907 n.a. 153.3482 /T 53.5/ 94.0400
2021-Feb-01 00:00 129.30098 28.88638 0.00195938367655 16.032 n.a. 167.1758 /T 48.8/ 87.6767
2021-Feb-02 00:00 159.97446 22.59448 0.00162378360411 15.974 n.a. 156.5659 /L 35.0/ 79.3242
2021-Feb-03 00:00 195.23436 6.81802 0.00150977820778 16.792 n.a. 122.1767 /L 12.9/ 69.4105
2021-Feb-04 00:00 226.70660 -10.63896 0.00169366899757 18.211 n.a. 88.1170 /L 11.9/ 58.4687
2021-Feb-05 00:00 250.79442 -21.40805 0.00207342295638 19.926 n.a. 64.2343 /L 22.3/ 47.0930
2021-Feb-06 00:00 268.28135 -26.56441 0.00251859195658 22. n.a. 49.0231 /L 24.9/ 35.8975
2021-Feb-07 00:00 281.08363 -28.82052 0.00296678947825 23. n.a. 39.0360 /L 22.5/ 25.4778
2021-Feb-08 00:00 290.76148 -29.67866 0.00339575668379 24. n.a. 32.1404 /L 17.4/ 16.3756
Setups
CW setup:
---------------------------------------------------------------------------
TX polarization RCP
RCV polarization LCP & RCP
Frequency hops: no hopping
Bandwidth: 5000 Hz
TXoffset +500 Hz
FFT 5000 for 1.0 Hz resolution
Ranging setups:
---------------------------------------------------------------------------
10-usec
baud 10 usec
code 127
PRP 1270 usec
ncoh 1
bandwidth 787 Hz
FFT 128
resolution 6.15 Hz
TXoffset +100 Hz (echo in column 80)
---------------------------------------------------------------------------
11-usec
baud 11 usec
code 127
PRP 1397 usec
ncoh 1
bandwidth 716 Hz
FFT 128
resolution 5.6 Hz
TXoffset +100 Hz (echo in column 82)
-------------------------------------------------------------------------
1-usec
baud 1 usec
code 255
ncoh 8
bandwidth 245 Hz
FFT 128
resolution 3.8 Hz
TXoffset +50 Hz (echo in column 116)
---------------------------------------------------------------------
NOTE: Data should be moved to the appropriate subdirectories in
aardvark:/export/data0/2020so/raw/
OSOD and predicts are on aardvark:
/export/data3/osod/ops/2020so/EPH.OUT.s56
Transmit with DSS-14, receive at DSS-13:
/export/data3/osod/ops/2020so/PRDX.OUT.14f-13-13.s56
/export/data3/osod/ops/2020so/PRDX.OUT.14v-13-13.s56
/export/data3/osod/ops/2020so/PUNCH.OUT.14f-13-13.s56
/export/data3/osod/ops/2020so/PUNCH.OUT.14v-13-13.s56
Transmit with DSS-14, receive constant frequency at Svetloe, eavesdrop at DSS-13:
/export/data3/osod/ops/2020so/PRDX.OUT.14v-58-13.s56
/export/data3/osod/ops/2020so/PUNCH.OUT.14v-58-13.s56
Transmit with DSS-14, receive with DSS-14 (Note: we aren't planning to do this):
/export/data3/osod/ops/2020so/PRDX.OUT.14f-14-14.s56
/export/data3/osod/ops/2020so/PRDX.OUT.14v-14-14.s56
/export/data3/osod/ops/2020so/PUNCH.OUT.14f-14-14.s56
/export/data3/osod/ops/2020so/PUNCH.OUT.14v-14-14.s56
POINTING
...Not yet available...
Transmit offsets are given in millidegrees.
PRDX.OUT.14f-14-14.s56
TRANSMITTER: STATION #14, RECEIVER: STATION #14
RECEIVER U.T. RANGE DOPPLER LHA DEC RA EL
==============================================================================
-----------------------------------------------------
2020 November 30 (DOY 335)
Observer: Benner
Ptx = 440 kW
<--- UTC --->
TX txsta txend
Setup ncoh Code Bandwidth OSOD FFT delta f Offset Runs HHMMSS-HHMMSS
CW - - 5000 Hz 56 5000 10 Hz +500 Hz - 042628-045520 14 > 13; eavesdrop at Svetloe
CW - - 5000 Hz 56 100 50 Hz +1000 Hz - 045615-051440 14 > 13; eavesdrop at Svetloe
10 usec 1 127 787 Hz 56 128 6 Hz +100 Hz - 051752-052147 14 > 13; error: no Doppler in WFG
1.0 usec 1 127 7874 Hz 56 128 61.5 Hz +1000 Hz - 052337-053730 14 > 13; eavesdrop at Svetloe
1/8 usec 1 127 62992 Hz 56 256 246 Hz +2000 Hz - 053739-055052 14 > 13; eavesdrop at Svetloe
1/8 usec 1 127 62992 Hz 56 256 246 Hz +2000 Hz - 060500-062545 14 > Svetloe; eavesdrop at DSS-13
Times refer to the *transmit* start and stop. In most cases, receive
start and end were only a couple of seconds later.
CW observations with an offset of +500 Hz used frequency resolutions of 1 Hz, 0.2 Hz, and 10 Hz.
CW observations with an offset of +1000 Hz used frequency resolutions of 10 Hz and 50 Hz.
Reception at Svetloe stopped at 06:25 when the elevation there dropped to 8 degrees.
-----------------------------------------------------
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/2020SO/2020so.2020.goldstone.planning.html
Asteroid Radar Astronomy
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