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
1954-12-05 09:33:59 A 07 10 13.81 -21 20 45.9 675
1954-12-05 10:23:59 A 07 09 58.86 -21 23 39.4 675
1954-12-05 10:23:59 X 07 10.0 -21 24 17.0 675
1954-12-05 10:36:00 A 07 09 55.32 -21 24 21.0 675
1954-12-11 09:15:00 A 06 20 41.51 -30 02 39.7 675
1954-12-11 09:24:59 A 06 20 37.87 -30 03 09.7 675
2001-11-20 11:02:05 C 10 09 13.50 +01 31 42.3 c 699
2001-11-20 11:15:44 C 10 09 15.47 +01 31 24.9 c 699
2001-11-20 11:29:26 C 10 09 17.48 +01 31 09.5 c 699
2001-11-20 11:43:10 C 10 09 19.47 +01 30 53.0 c 699
2001-11-23 15:06:50 C 10 20 46.41 -00 01 54.5 c 608
2001-11-23 15:21:53 C 10 20 48.70 -00 02 13.6 c 608
2001-11-23 15:36:57 C 10 20 50.96 -00 02 33.4 c 608
2003-10-21 11:11:29 C 08 40 54.38 +07 20 49.7 18.7 c 704
2003-10-21 11:28:08 C 08 40 52.99 +07 20 33.0 19.0 c 704
2003-10-21 11:44:50 C 08 40 51.56 +07 20 16.8 18.4 c 704
2003-10-21 12:01:34 C 08 40 50.15 +07 20 00.4 18.8 c 704
2003-10-22 10:07:10 C 08 39 12.98 +06 57 51.4 18.2 c 704
2003-10-22 10:23:57 C 08 39 11.62 +06 57 33.9 18.5 c 704
2003-10-22 10:31:49 C 08 39 10.97 +06 57 26.6 18.1 c 704
2003-10-22 10:40:29 C 08 39 10.26 +06 57 17.7 19.5 c 704
2003-10-22 10:48:56 C 08 39 09.50 +06 57 09.0 18.4 c 704
2003-10-22 10:56:56 C 08 39 08.83 +06 57 01.2 19.4 c 704
2003-10-22 11:06:11 C 08 39 08.08 +06 56 51.9 18.7 c 704
2003-10-22 11:13:24 C 08 39 07.42 +06 56 44.2 19.0 c 704
2003-10-22 11:23:21 C 08 39 06.62 +06 56 34.6 18.8 c 704
2003-10-22 11:34:35 C 08 39 05.89 +06 56 25.3 c 926
2003-10-22 11:36:47 C 08 39 05.68 +06 56 22.8 c 926
2003-10-22 11:39:01 C 08 39 05.46 +06 56 20.4 c 926
2003-10-22 11:40:39 C 08 39 05.12 +06 56 17.4 18.8 c 704
2003-10-22 12:19:41 C 08 39 02.26 +06 55 37.1 c 673
2003-10-22 12:22:39 C 08 39 01.95 +06 55 33.5 c 673
2003-10-22 12:25:30 C 08 39 01.76 +06 55 31.1 c 673
2003-10-22 12:28:20 C 08 39 01.51 +06 55 28.2 c 673
2003-10-22 12:31:09 C 08 39 01.26 +06 55 25.3 c 673
2003-10-22 12:33:59 C 08 39 01.02 +06 55 22.6 c 673
2003-10-23 10:21:27 C 08 37 23.69 +06 32 47.5 17.6 c 704
2003-10-23 10:37:56 C 08 37 22.29 +06 32 30.6 17.9 c 704
2003-10-23 10:49:29 C 08 37 21.26 +06 32 18.0 17.7 c 704
2003-10-23 10:54:29 C 08 37 20.87 +06 32 12.5 18.0 c 704
2003-10-23 11:07:09 C 08 37 19.74 +06 31 59.8 17.9 c 704
2003-10-23 11:11:14 C 08 37 19.43 +06 31 55.3 17.7 c 704
2003-10-23 11:16:29 C 08 37 19.38 +06 31 48.8 c 673
2003-10-23 11:19:30 C 08 37 19.15 +06 31 46.2 c 673
2003-10-23 11:22:30 C 08 37 18.90 +06 31 42.5 c 673
2003-10-23 11:25:06 C 08 37 18.20 +06 31 40.9 17.9 c 704
2003-10-23 11:28:03 C 08 37 17.98 +06 31 38.0 18.2 c 704
2003-10-23 11:43:01 C 08 37 16.61 +06 31 22.5 17.8 c 704
2003-10-24 10:33:35 C 08 35 32.60 +06 06 55.0 18.5 c 704
2003-10-24 10:50:45 C 08 35 31.13 +06 06 36.2 18.6 c 704
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)