438908 (2009 XO)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5433820901 ± 3.71e-09
Semi-major axis (a)1.8591254654 AU ± 2.64e-10
Inclination (i)0.34850554° ± 5.67e-07
Long. of Asc. Node (Ω)27.93296520° ± 4.48e-05
Arg. of Perihelion (ω)140.52573880° ± 4.48e-05
Mean Anomaly (M)83.10089395° ± 2.39e-07
Mean Motion (n)0.3888205647°/day ± 8.27e-11
Perihelion dist (q)0.84890998 AU ± 6.91e-09
Aphelion dist (Q)2.86934095 AU ± 6.92e-09
Orbital Period2.53491295 yr ± 5.39e-10
Physical Parameters
H (abs. magnitude)20.63
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.249″
Uncertainty0
Orbit TypeApollo
MOID0.001829 AU
Observations Used803
Radar Obs Used4
Oppositions7
Arc Total2009-2020
First Observation Used2009-12-09
Last Observation Used2020-07-12
Observations (840)
Date Type RA Dec Mag Band Observatory
2020-05-21 18:00:00 C 15 18 32.84 -20 18 32.8 Y 190
2020-05-21 18:03:34 C 15 18 33.28 -20 18 34.1 Y 190
2020-05-21 18:04:26 C 15 18 33.37 -20 18 34.7 Y 190
2020-05-21 18:05:20 C 15 18 33.46 -20 18 35.1 Y 190
2020-05-21 18:06:14 C 15 18 33.61 -20 18 35.5 Y 190
2020-05-21 18:07:07 C 15 18 33.73 -20 18 35.6 Y 190
2020-05-21 18:08:00 C 15 18 33.81 -20 18 35.9 Y 190
2020-05-21 18:08:53 C 15 18 33.97 -20 18 36.3 Y 190
2020-05-21 18:09:47 C 15 18 34.04 -20 18 36.3 Y 190
2020-05-22 07:38:31 C 15 20 26.30 -20 23 03.9 V 703
2020-05-22 07:46:31 C 15 20 27.24 -20 23 06.2 V 703
2020-05-22 07:54:29 C 15 20 28.17 -20 23 08.6 V 703
2020-05-22 08:02:29 C 15 20 29.10 -20 23 10.9 V 703
2020-05-22 08:48:05 C 15 20 38.07 -20 23 14.4 V T08
2020-05-22 08:51:25 C 15 20 38.45 -20 23 15.4 V T08
2020-05-22 09:00:43 C 15 20 39.49 -20 23 18.7 V T08
2020-05-22 09:51:18 C 15 20 45.19 -20 23 35.1 V T08
2020-05-22 16:43:45 C 15 21 42.01 -20 25 56.1 Y 190
2020-05-22 16:45:41 C 15 21 42.21 -20 25 57.0 Y 190
2020-05-22 16:46:40 C 15 21 42.34 -20 25 56.7 Y 190
2020-05-22 16:54:28 C 15 21 43.30 -20 25 59.5 Y 190
2020-05-22 16:55:27 C 15 21 43.38 -20 26 00.3 Y 190
2020-05-22 16:57:24 C 15 21 43.59 -20 26 01.4 Y 190
2020-05-22 16:58:22 C 15 21 43.69 -20 26 01.6 Y 190
2020-05-22 16:59:20 C 15 21 43.79 -20 26 01.2 Y 190
2020-05-22 17:08:06 C 15 21 44.84 -20 26 04.9 Y 190
2020-05-22 17:13:56 C 15 21 45.46 -20 26 06.2 Y 190
2020-05-22 17:14:54 C 15 21 45.53 -20 26 06.5 Y 190
2020-05-22 17:16:52 C 15 21 45.75 -20 26 07.4 Y 190
2020-05-22 17:17:50 C 15 21 45.87 -20 26 07.5 Y 190
2020-05-22 17:18:48 C 15 21 46.03 -20 26 07.8 Y 190
2020-05-22 17:22:43 C 15 21 46.37 -20 26 09.5 Y 190
2020-05-22 17:26:37 C 15 21 46.84 -20 26 10.5 Y 190
2020-05-22 17:27:35 C 15 21 46.92 -20 26 11.7 Y 190
2020-05-22 17:32:28 C 15 21 47.49 -20 26 12.4 Y 190
2020-05-22 17:33:26 C 15 21 47.62 -20 26 12.7 Y 190
2020-05-22 17:34:24 C 15 21 47.75 -20 26 12.9 Y 190
2020-05-22 17:35:23 C 15 21 47.81 -20 26 13.5 Y 190
2020-05-22 17:36:21 C 15 21 47.93 -20 26 13.5 Y 190
2020-05-22 17:37:20 C 15 21 48.03 -20 26 14.9 Y 190
2020-05-22 17:42:12 C 15 21 48.59 -20 26 15.7 Y 190
2020-05-22 17:43:09 C 15 21 48.70 -20 26 16.0 Y 190
2020-05-22 17:44:07 C 15 21 48.82 -20 26 16.3 Y 190
2020-05-22 17:45:06 C 15 21 48.95 -20 26 16.8 Y 190
2020-05-22 17:46:05 C 15 21 49.00 -20 26 16.9 Y 190
2020-05-22 17:47:04 C 15 21 49.14 -20 26 17.6 Y 190
2020-05-22 17:48:02 C 15 21 49.28 -20 26 17.5 Y 190
2020-05-22 17:51:56 C 15 21 49.69 -20 26 18.7 Y 190
2020-05-22 17:52:54 C 15 21 49.79 -20 26 19.1 Y 190
2020-05-22 17:53:52 C 15 21 49.91 -20 26 19.5 Y 190
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2020-05-03 19:40:00 157212.9187 0.04 Hz 2380 -1 -1
2020-05-03 20:27:00 35122568.63 4 us 2380 -1 -1
2020-05-03 21:35:00 34858545.6 0.5 us 2380 -1 -1
2020-05-07 23:53:00 22876321.67 0.5 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)