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
2021-11-11 01:15:48 S 09 12 05.32 +05 31 11.7 L C51
2021-11-11 04:23:13 S 09 12 23.88 +05 27 58.8 L C51
2021-11-11 05:53:56 S 09 14 02.772 +05 29 30.34 V C57
2021-11-11 05:53:56 s 1 +106629.26 2 +334344.36 6710.0 C57
2021-11-11 05:58:00 S 09 12 33.27 +05 26 23.0 L C51
2021-11-11 06:03:56 S 09 14 03.720 +05 29 26.45 V C57
2021-11-11 06:03:56 s 1 +106323.69 2 +334649.94 1420.0 C57
2021-11-11 07:32:05 S 09 12 42.61 +05 24 46.5 L C51
2021-11-11 07:43:56 S 09 14 13.656 +05 27 32.76 V C57
2021-11-11 07:43:56 s 1 +103249.09 5 +337646.03 5560.0 C57
2021-11-11 07:53:56 S 09 14 14.909 +05 27 25.13 V C57
2021-11-11 07:53:56 s 1 +102939.77 9 +337939.69 7810.0 C57
2021-11-11 09:06:08 S 09 12 51.95 +05 23 10.0 L C51
2021-11-11 10:40:23 S 09 13 01.320 +05 21 33.55 L C51
2021-11-11 12:13:44 S 09 13 10.57 +05 19 56.0 L C51
2021-11-11 13:48:31 S 09 13 20.04 +05 18 19.5 L C51
2021-11-11 13:48:43 S 09 13 20.05 +05 18 20.1 L C51
2021-11-11 15:22:46 S 09 13 29.42 +05 16 42.8 L C51
2021-11-11 16:56:51 S 09 13 38.79 +05 15 05.6 L C51
2021-11-11 18:30:55 S 09 13 48.17 +05 13 28.2 L C51
2021-11-11 20:04:59 S 09 13 57.56 +05 11 50.6 L C51
2021-11-11 21:39:03 S 09 14 06.95 +05 10 12.9 L C51
2021-11-11 21:39:14 S 09 14 06.97 +05 10 13.2 L C51
2021-11-11 23:13:18 S 09 14 16.37 +05 08 35.4 L C51
2021-11-12 00:47:22 S 09 14 25.78 +05 06 57.4 L C51
2021-11-12 03:55:30 S 09 14 44.64 +05 03 41.4 L C51
2021-11-12 07:03:49 S 09 15 03.51 +05 00 24.7 L C51
2021-11-12 10:11:57 S 09 15 22.418 +04 57 07.49 L C51
2021-11-12 11:33:56 S 09 16 59.558 +04 57 28.76 V C57
2021-11-12 11:33:56 s 1 +48013.256 0 +372146.28 8420.0 C57
2021-11-12 13:19:21 S 09 15 41.25 +04 53 48.9 L C51
2021-11-12 14:03:56 S 09 17 13.745 +04 54 40.57 V C57
2021-11-12 14:03:56 s 1 +42797.278 0 +373849.22 3950.0 C57
2021-11-12 14:09:32 C 09 15 48.12 +04 52 42.8 V T05
2021-11-12 14:18:47 C 09 15 49.04 +04 52 33.9 V T05
2021-11-12 14:23:56 S 09 17 16.121 +04 54 27.04 V C57
2021-11-12 14:23:56 s 1 +42099.770 0 +374059.23 480.0 C57
2021-11-12 14:25:28 C 09 15 49.66 +04 52 26.9 V T05
2021-11-12 14:45:47 C 09 15 51.55 +04 52 05.1 V T05
2021-11-12 16:28:24 S 09 16 00.33 +04 50 31.3 L C51
2021-11-12 19:36:32 S 09 16 19.32 +04 47 12.3 L C51
2021-11-12 22:03:56 S 09 18 01.044 +04 46 01.49 V C57
2021-11-12 22:03:56 s 1 +25947.257 0 +377786.20 6400.0 C57
2021-11-12 22:44:40 S 09 16 38.33 +04 43 52.7 L C51
2021-11-13 01:52:59 S 09 16 57.41 +04 40 32.7 L C51
2021-11-13 02:03:56 S 09 18 24.223 +04 41 28.43 V C57
2021-11-13 02:03:56 s 1 +17455.749 0 +378893.91 3890.0 C57
2021-11-13 02:33:56 S 09 18 27.360 +04 40 56.64 V C57
2021-11-13 02:33:56 s 1 +16392.158 0 +378992.11 6920.0 C57
2021-11-13 03:13:56 S 09 18 31.234 +04 40 10.60 V C57
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)