363505 (2003 UC20)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3369206020 ± 2.00e+00
Semi-major axis (a)0.7812413289 AU ± 3.00e+00
Inclination (i)3.77598941° ± 4.00e+00
Long. of Asc. Node (Ω)187.92061629° ± 5.00e+00
Arg. of Perihelion (ω)60.17154525° ± 6.00e+00
Mean Anomaly (M)117.79838381° ± 4.25e-06
Mean Motion (n)1.4273630860°/day ± 8.22e+00
Perihelion dist (q)0.51802503 AU ± 2.53e+00
Aphelion dist (Q)1.04445763 AU ± 4.30e+00
Orbital Period0.69052247 yr ± 3.98e+00
NGA Modelr2
A2-3.65170224e-07 AU/d²
Physical Parameters
H (abs. magnitude)18.48
G (slope)0.15
Alternative Designations

1954 XA

Orbit Solution
SourceIAA
Solution Date2026-04-29
RMS Residual0.018″
Uncertainty0
Orbit TypeAten
MOID0.035536 AU
Observations Used801
Gaia Obs Used106
Oppositions28
Arc Total1954-2017
First Observation Used1954-12-05
Last Observation Used2025-12-19
Observations (1097)
Date Type RA Dec Mag Band Observatory
2014-12-21 01:12:56 C 00 18 06.86 -09 50 54.3 R G45
2014-12-21 01:18:53 C 00 18 07.40 -09 50 49.3 R G45
2014-12-21 01:21:43 C 00 18 07.67 -09 50 46.7 R G45
2014-12-21 01:27:40 C 00 18 08.23 -09 50 41.5 R G45
2014-12-21 01:34:43 C 00 18 08.87 -09 50 35.8 R G45
2014-12-21 01:40:41 C 00 18 09.41 -09 50 30.7 R G45
2014-12-22 01:15:32 C 00 20 28.47 -09 30 28.2 R G45
2014-12-22 01:24:18 C 00 20 29.26 -09 30 20.9 R G45
2014-12-22 01:30:17 C 00 20 29.80 -09 30 15.3 R G45
2014-12-22 01:37:18 C 00 20 30.44 -09 30 09.6 R G45
2014-12-24 01:16:33 C 00 25 05.33 -08 50 26.9 R G45
2014-12-24 01:22:31 C 00 25 05.88 -08 50 20.6 R G45
2014-12-24 01:29:45 C 00 25 06.56 -08 50 15.1 R G45
2014-12-24 01:35:43 C 00 25 07.07 -08 50 09.9 R G45
2014-12-29 00:47:14 S 00 36 04.529 -07 14 40.42 L C51
2015-01-05 18:06:36 C 00 51 58.02 -04 56 58.5 q 160
2015-01-05 18:09:34 C 00 51 58.30 -04 56 56.1 q 160
2015-01-05 18:12:34 C 00 51 58.47 -04 56 53.0 q 160
2015-01-11 05:12:49 C 01 02 31.784 -03 25 28.42 L F51
2015-01-11 05:34:30 C 01 02 33.370 -03 25 13.70 L F51
2015-01-20 03:11:17 C 01 18 46.62 -01 05 45.8 R G45
2015-01-20 03:17:21 C 01 18 47.03 -01 05 42.7 R G45
2015-01-20 03:23:13 C 01 18 47.44 -01 05 38.8 R G45
2015-01-20 03:27:00 C 01 18 47.69 -01 05 36.5 R G45
2015-01-22 01:53:37 C 01 22 10.55 -00 36 43.9 q 703
2015-01-22 02:08:01 C 01 22 11.55 -00 36 33.4 q 703
2015-01-22 02:15:13 C 01 22 11.97 -00 36 29.1 q 703
2015-01-25 02:58:31 C 01 27 21.52 +00 07 43.6 R G45
2015-01-25 03:04:24 C 01 27 21.96 +00 07 48.5 R G45
2015-01-25 03:14:03 C 01 27 22.61 +00 07 54.6 R G45
2015-01-25 03:20:07 C 01 27 22.99 +00 07 57.7 R G45
2015-01-28 02:43:47 C 01 32 17.76 +00 50 06.4 R G45
2015-01-28 02:47:55 C 01 32 18.07 +00 50 08.5 R G45
2015-01-28 03:04:01 C 01 32 19.07 +00 50 16.8 R G45
2015-01-28 03:10:31 C 01 32 19.55 +00 50 22.1 R G45
2015-01-28 03:16:21 C 01 32 19.90 +00 50 25.2 R G45
2017-01-28 02:25:30 C 01 10 12.68 +02 31 38.4 q G96
2017-01-28 02:31:41 C 01 10 13.41 +02 31 42.2 q G96
2017-01-28 02:37:51 C 01 10 14.12 +02 31 46.7 q G96
2017-01-28 02:44:00 C 01 10 14.76 +02 31 51.5 q G96
2017-03-19 02:38:58 C 03 24 36.04 +15 06 02.7 q G96
2017-03-19 02:45:04 C 03 24 36.64 +15 06 04.8 q G96
2017-03-19 02:51:10 C 03 24 37.30 +15 06 08.6 q G96
2017-03-19 02:57:15 C 03 24 37.91 +15 06 11.4 q G96
2017-11-20 14:53:12 C 12 11 29.708 -04 48 43.00 L F51
2017-11-20 15:00:38 C 12 11 31.234 -04 48 52.23 L F51
2017-11-20 15:08:02 C 12 11 32.745 -04 49 01.26 L F51
2017-11-20 15:15:27 C 12 11 34.244 -04 49 10.35 L F51
2019-09-29 11:39:40 C 07 58 51.58 +17 11 54.7 V G96
2019-09-29 11:46:45 C 07 58 52.43 +17 11 51.6 V G96
Radar Observations (8)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2003-10-28 11:12:00 65823.59 3 Hz 2380 -1 -1
2003-10-28 11:22:00 65526.86 1 Hz 2380 -1 -1
2003-10-30 09:41:00 69173.033 0.5 Hz 2380 -1 -1
2003-10-30 10:32:00 141742138.9 8 us 2380 -1 -1
2003-10-30 10:32:00 67625.2096 0.5 Hz 2380 -1 -1
2023-10-20 15:00:00 70129418.56 1.5 us 8560 -14 -14
2023-10-25 15:50:00 50837172.074 0.5 us 8560 -14 -14
2023-11-02 17:07:00 1169.735 0.46 Hz 7159.45 -47 -43
Station codes
-47 DSS-47 ATCA (W196) -43 DSS-43 Tidbinbilla (70-m) -14 DSS-14 Goldstone (70-m) -1 Arecibo (305-m, 1963–2020)