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
2006-01-23 02:53:44 C 01 18 30.63 +01 03 18.2 19.8 c 704
2006-01-23 03:12:01 C 01 18 32.26 +01 03 30.2 19.0 c 704
2008-01-21 01:36:56 C 00 33 37.43 -00 30 24.2 o H55
2008-01-21 01:44:19 C 00 33 38.34 -00 30 17.2 o H55
2008-01-21 01:52:02 C 00 33 39.47 -00 30 11.4 o H55
2008-10-01 11:12:44 C 08 34 34.71 +15 16 36.4 r G96
2008-10-01 11:19:13 C 08 34 35.68 +15 16 32.2 r G96
2008-10-01 11:25:41 C 08 34 36.58 +15 16 28.8 r G96
2008-10-01 11:32:09 C 08 34 37.48 +15 16 24.8 r G96
2008-10-28 11:47:13 C 10 11 31.23 +06 49 42.0 r G96
2008-10-28 11:54:23 C 10 11 32.35 +06 49 35.3 r G96
2008-10-28 12:01:42 C 10 11 33.54 +06 49 28.3 r G96
2010-11-13 12:03:44 C 10 08 37.78 +04 08 06.9 r 703
2010-11-13 12:14:43 C 10 08 39.40 +04 07 55.3 r 703
2010-11-13 12:25:39 C 10 08 41.06 +04 07 45.0 r 703
2010-11-13 12:36:27 C 10 08 42.72 +04 07 32.9 r 703
2012-09-27 14:16:48 C 08 07 42.53 +17 26 45.5 o F65
2012-09-27 14:18:40 C 08 07 42.55 +17 26 44.7 o F65
2012-09-27 14:20:29 C 08 07 42.53 +17 26 43.7 o F65
2012-09-27 14:22:16 C 08 07 42.53 +17 26 42.8 o F65
2012-09-27 14:24:06 C 08 07 42.53 +17 26 41.9 o F65
2012-09-27 14:25:52 C 08 07 42.53 +17 26 41.2 o F65
2012-10-15 10:57:36 C 08 17 18.99 +13 06 59.5 r 703
2012-10-15 11:08:13 C 08 17 19.28 +13 06 50.9 r 703
2012-10-15 11:18:56 C 08 17 19.53 +13 06 43.9 r 703
2012-10-21 10:01:03 C 08 22 25.22 +11 22 42.5 q H45
2012-10-21 10:03:13 C 08 22 25.28 +11 22 40.8 q H45
2012-10-21 10:05:13 C 08 22 25.35 +11 22 39.4 q H45
2012-10-21 10:06:25 C 08 22 25.36 +11 22 38.3 q H45
2012-10-21 10:08:41 C 08 22 25.44 +11 22 36.7 q H45
2012-10-21 10:10:52 C 08 22 25.49 +11 22 35.0 q H45
2012-10-22 14:36:02 c 08 23 29.153 +11 00 43.58 L F51
2012-10-22 14:56:21 c 08 23 29.764 +11 00 27.94 L F51
2012-10-25 03:18:10 C 08 25 46.69 +10 11 59.2 t 204
2012-10-25 03:23:48 C 08 25 46.88 +10 11 54.6 t 204
2012-10-25 03:29:26 C 08 25 47.06 +10 11 50.0 t 204
2012-10-27 10:15:47 C 08 27 53.53 +09 26 08.9 r 703
2012-10-27 10:25:56 C 08 27 53.82 +09 25 59.0 r 703
2012-10-27 10:36:03 C 08 27 54.21 +09 25 51.2 r 703
2012-10-27 10:46:16 C 08 27 54.50 +09 25 42.3 r 703
2012-10-30 14:37:57 c 08 30 49.555 +08 18 54.74 L F51
2012-10-30 14:53:22 c 08 30 50.019 +08 18 40.83 L F51
2012-11-10 10:29:31 C 08 40 31.06 +03 51 03.3 18.3 c 704
2012-11-10 10:50:34 C 08 40 31.66 +03 50 40.8 18.8 c 704
2012-11-10 11:11:43 C 08 40 32.16 +03 50 14.1 18.7 c 704
2012-11-10 11:33:18 C 08 40 32.73 +03 49 48.6 18.4 c 704
2012-11-10 11:54:49 C 08 40 33.28 +03 49 24.0 18.5 c 704
2012-11-14 01:06:22 C 08 43 26.77 +02 04 23.6 u 557
2012-11-14 02:09:50 C 08 43 28.43 +02 03 01.8 u 557
2012-11-14 03:18:48 C 08 43 30.15 +02 01 32.7 u 557
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)