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
2020-05-09 17:44:32 C 12 31 23.81 -08 28 37.4 V C40
2020-05-09 17:45:10 C 12 31 24.97 -08 28 44.4 V C40
2020-05-09 17:46:46 C 12 31 27.96 -08 29 02.1 V C40
2020-05-09 17:47:24 C 12 31 29.15 -08 29 09.2 V C40
2020-05-09 17:47:43 C 12 31 29.74 -08 29 12.7 V C40
2020-05-09 17:48:02 C 12 31 30.34 -08 29 16.2 V C40
2020-05-09 17:49:57 C 12 31 33.90 -08 29 37.3 V C40
2020-05-09 18:04:32 C 12 32 00.99 -08 32 18.0 V C40
2020-05-09 18:04:51 C 12 32 01.58 -08 32 21.6 V C40
2020-05-09 18:05:29 C 12 32 02.75 -08 32 28.6 V C40
2020-05-09 18:07:44 C 12 32 06.94 -08 32 53.2 V C40
2020-05-09 18:08:22 C 12 32 08.12 -08 33 00.3 V C40
2020-05-09 18:08:41 C 12 32 08.70 -08 33 03.7 V C40
2020-05-09 18:09:01 C 12 32 09.31 -08 33 07.4 V C40
2020-05-09 18:09:58 C 12 32 11.09 -08 33 17.9 V C40
2020-05-09 18:10:56 C 12 32 12.87 -08 33 28.6 V C40
2020-05-09 18:11:34 C 12 32 14.05 -08 33 35.5 V C40
2020-05-09 18:12:13 C 12 32 15.24 -08 33 42.5 V C40
2020-05-09 18:12:51 C 12 32 16.42 -08 33 49.5 V C40
2020-05-09 18:15:16 C 12 32 20.89 -08 34 15.9 V C40
2020-05-09 18:16:52 C 12 32 23.86 -08 34 33.6 V C40
2020-05-09 18:24:53 C 12 32 38.68 -08 36 01.2 V C40
2020-05-09 18:28:44 C 12 32 45.79 -08 36 43.2 V C40
2020-05-09 18:30:40 C 12 32 49.34 -08 37 04.4 V C40
2020-05-09 18:30:59 C 12 32 49.93 -08 37 07.7 V C40
2020-05-09 19:07:28 C 12 34 03.22 -08 43 28.6 q K73
2020-05-09 19:09:53 C 12 34 07.60 -08 43 54.7 q K73
2020-05-09 19:12:17 C 12 34 11.96 -08 44 20.3 q K73
2020-05-09 19:14:37 C 12 34 16.22 -08 44 45.6 q K73
2020-05-09 19:50:52 C 12 35 16.20 -08 51 27.8 V C40
2020-05-09 19:51:51 C 12 35 17.98 -08 51 38.2 V C40
2020-05-09 19:55:45 C 12 35 25.07 -08 52 19.9 V C40
2020-05-09 19:56:44 C 12 35 26.84 -08 52 30.1 V C40
2020-05-09 19:57:13 C 12 35 27.74 -08 52 35.3 V C40
2020-05-09 20:01:36 C 12 35 35.68 -08 53 21.6 V C40
2020-05-09 20:02:05 C 12 35 36.58 -08 53 27.0 V C40
2020-05-09 20:04:02 C 12 35 40.10 -08 53 47.4 V C40
2020-05-09 20:05:29 C 12 35 42.73 -08 54 02.9 V C40
2020-05-09 20:05:59 C 12 35 43.61 -08 54 07.9 V C40
2020-05-09 21:21:17 C 12 38 05.41 -09 07 23.9 V 595
2020-05-09 21:23:59 C 12 38 10.21 -09 07 51.7 V 595
2020-05-09 21:31:46 C 12 38 24.09 -09 09 12.3 V 595
2020-05-10 10:38:39 C 13 00 34.06 -11 09 39.1 V T08
2020-05-10 10:44:37 C 13 00 43.06 -11 10 27.9 V T08
2020-05-10 10:55:15 C 13 00 59.04 -11 11 54.5 V T08
2020-05-10 11:15:13 C 13 01 29.04 -11 14 36.5 V T08
2020-05-10 17:58:09 C 13 11 46.43 -12 08 28.4 V C40
2020-05-10 18:08:25 C 13 12 00.51 -12 09 44.0 V C40
2020-05-10 18:11:38 C 13 12 04.90 -12 10 07.6 V C40
2020-05-10 18:12:36 C 13 12 06.25 -12 10 14.6 V C40
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)