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
2003-10-24 11:08:51 C 08 35 29.45 +06 06 16.8 19.2 c 704
2003-10-24 11:25:49 C 08 35 28.00 +06 05 58.6 18.6 c 704
2003-10-24 11:26:35 C 08 35 27.95 +06 05 57.6 18.8 c 704
2003-10-24 11:43:16 C 08 35 26.45 +06 05 39.9 18.7 c 704
2003-10-24 11:43:20 C 08 35 26.40 +06 05 40.2 18.9 c 704
2003-10-24 11:43:20 C 08 35 26.91 +06 05 38.7 c 673
2003-10-24 11:46:20 C 08 35 26.64 +06 05 35.0 c 673
2003-10-24 11:53:59 C 08 35 25.97 +06 05 27.1 c 673
2003-10-24 11:57:00 C 08 35 25.69 +06 05 23.8 c 673
2003-10-24 12:00:49 C 08 35 24.86 +06 05 20.6 18.6 c 704
2003-10-24 12:02:09 C 08 35 25.24 +06 05 18.3 c 673
2003-10-24 12:06:29 C 08 35 24.87 +06 05 13.7 c 673
2003-10-25 01:10:36 C 08 34 24.11 +05 50 39.0 d A50
2003-10-25 01:12:39 C 08 34 23.95 +05 50 36.3 d A50
2003-10-25 01:14:43 C 08 34 23.73 +05 50 34.3 d A50
2003-10-25 01:16:46 C 08 34 23.61 +05 50 31.5 d A50
2003-10-25 01:18:50 C 08 34 23.35 +05 50 30.3 d A50
2003-10-25 01:21:19 C 08 34 23.14 +05 50 27.8 d A50
2003-10-25 01:23:21 C 08 34 22.93 +05 50 24.2 d A50
2003-10-25 01:25:26 C 08 34 22.76 +05 50 22.7 d A50
2003-10-25 01:27:28 C 08 34 22.65 +05 50 20.6 d A50
2003-10-25 01:29:32 C 08 34 22.41 +05 50 19.2 d A50
2003-10-25 10:26:43 C 08 33 40.76 +05 40 31.0 17.3 c 704
2003-10-25 10:44:21 C 08 33 39.19 +05 40 11.8 17.6 c 704
2003-10-25 11:01:29 C 08 33 37.65 +05 39 52.3 17.5 c 704
2003-10-25 11:18:25 C 08 33 36.10 +05 39 33.8 17.8 c 704
2003-10-25 11:35:23 C 08 33 34.57 +05 39 14.7 17.7 c 704
2003-10-26 10:07:29 C 08 31 47.28 +05 13 29.2 17.5 c 704
2003-10-26 10:24:48 C 08 31 45.72 +05 13 09.4 17.7 c 704
2003-10-26 10:42:04 C 08 31 44.14 +05 12 49.8 17.7 c 704
2003-10-26 10:59:19 C 08 31 42.55 +05 12 29.8 17.6 c 704
2003-10-26 11:16:27 C 08 31 40.95 +05 12 10.1 17.8 c 704
2003-10-27 10:03:58 C 08 29 49.18 +04 45 15.4 17.6 c 704
2003-10-27 10:05:32 C 08 29 49.05 +04 45 13.8 17.6 c 704
2003-10-27 10:20:26 C 08 29 47.63 +04 44 56.3 18.0 c 704
2003-10-27 10:21:59 C 08 29 47.49 +04 44 54.4 18.0 c 704
2003-10-27 10:36:54 C 08 29 46.08 +04 44 36.9 18.1 c 704
2003-10-27 10:38:28 C 08 29 45.96 +04 44 35.1 18.3 c 704
2003-10-27 10:53:18 C 08 29 44.54 +04 44 17.3 18.3 c 704
2003-10-27 10:54:52 C 08 29 44.39 +04 44 15.6 18.0 c 704
2003-10-27 11:09:43 C 08 29 42.97 +04 43 57.6 18.0 c 704
2003-10-27 11:11:16 C 08 29 42.82 +04 43 55.9 17.9 c 704
2003-11-02 11:15:07 C 08 16 14.61 +01 32 27.9 c 670
2003-11-02 12:42:52 C 08 16 04.04 +01 30 19.3 c 670
2003-11-11 19:36:22 C 07 45 44.18 -04 57 48.6 m 379
2003-11-11 19:39:31 C 07 45 43.58 -04 57 55.0 m 379
2003-11-13 18:48:17 C 07 37 00.52 -06 37 28.2 m 379
2003-11-13 18:54:44 C 07 36 59.08 -06 37 42.5 m 379
2003-11-13 18:56:53 C 07 36 58.62 -06 37 46.4 m 379
2003-11-13 18:59:03 C 07 36 58.17 -06 37 51.3 m 379
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)