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
2020-05-13 18:56:04 C 14 20 55.21 -17 18 42.1 V C40
2020-05-13 18:56:45 C 14 20 55.61 -17 18 43.5 V C40
2020-05-13 19:01:38 C 14 20 58.43 -17 18 55.1 V C40
2020-05-13 19:03:44 C 14 20 59.64 -17 19 00.0 V C40
2020-05-13 19:05:07 C 14 21 00.44 -17 19 03.3 V C40
2020-05-13 19:06:31 C 14 21 01.24 -17 19 06.7 V C40
2020-05-13 19:07:14 C 14 21 01.65 -17 19 08.3 V C40
2020-05-13 19:07:56 C 14 21 02.04 -17 19 09.9 V C40
2020-05-13 19:08:37 C 14 21 02.45 -17 19 11.7 V C40
2020-05-13 19:10:43 C 14 21 03.65 -17 19 16.6 V C40
2020-05-13 19:12:06 C 14 21 04.44 -17 19 19.8 V C40
2020-05-13 19:14:13 C 14 21 05.65 -17 19 24.6 V C40
2020-05-13 19:14:53 C 14 21 06.04 -17 19 26.3 V C40
2020-05-13 19:15:36 C 14 21 06.45 -17 19 27.9 V C40
2020-05-13 19:16:18 C 14 21 06.85 -17 19 29.5 V C40
2020-05-13 19:19:05 C 14 21 08.45 -17 19 36.2 V C40
2020-05-13 19:29:55 C 14 21 14.66 -17 20 01.4 V C40
2020-05-13 19:34:07 C 14 21 17.05 -17 20 11.2 V C40
2020-05-13 19:34:48 C 14 21 17.44 -17 20 12.7 V C40
2020-05-13 19:35:30 C 14 21 17.86 -17 20 14.4 V C40
2020-05-13 19:38:17 C 14 21 19.43 -17 20 20.8 V C40
2020-05-13 19:41:47 C 14 21 21.43 -17 20 28.8 V C40
2020-05-13 19:43:52 C 14 21 22.63 -17 20 33.7 V C40
2020-05-13 19:45:16 C 14 21 23.42 -17 20 36.9 V C40
2020-05-13 19:50:51 C 14 21 26.61 -17 20 49.7 V C40
2020-05-13 19:52:58 C 14 21 27.80 -17 20 54.7 V C40
2020-05-13 20:01:20 C 14 21 32.55 -17 21 13.7 V C40
2020-05-13 20:04:07 C 14 21 34.15 -17 21 20.2 V C40
2020-05-13 20:09:42 C 14 21 37.31 -17 21 33.0 V C40
2020-05-13 20:10:24 C 14 21 37.70 -17 21 34.4 V C40
2020-05-13 20:11:05 C 14 21 38.10 -17 21 36.1 V C40
2020-05-14 08:53:28 C 14 28 50.974 -17 47 24.90 U F52
2020-05-14 09:27:13 C 14 29 07.351 -17 48 29.87 U F52
2020-05-14 09:44:07 C 14 29 15.513 -17 49 01.91 U F52
2020-05-16 08:53:13 C 14 49 27.65 -18 57 05.8 V T05
2020-05-16 09:23:20 C 14 49 36.96 -18 57 39.1 V T05
2020-05-16 09:47:46 C 14 49 44.49 -18 58 05.6 V T05
2020-05-16 09:53:09 C 14 49 46.14 -18 58 11.3 V T05
2020-05-17 12:09:40 C 14 57 50.74 -19 22 49.4 V T05
2020-05-17 12:24:19 C 14 57 54.46 -19 23 00.0 V T05
2020-05-17 12:42:26 C 14 57 59.09 -19 23 12.9 V T05
2020-05-17 12:51:08 C 14 58 01.32 -19 23 19.1 V T05
2020-05-18 08:50:36 C 15 03 14.09 -19 38 33.6 V 703
2020-05-18 08:58:07 C 15 03 15.73 -19 38 38.0 V 703
2020-05-18 09:05:37 C 15 03 17.36 -19 38 42.6 V 703
2020-05-18 09:13:08 C 15 03 19.01 -19 38 47.1 V 703
2020-05-18 19:45:19 C 15 05 50.68 -19 45 50.8 V C40
2020-05-18 19:51:43 C 15 05 51.97 -19 45 55.1 V C40
2020-05-18 20:04:35 C 15 05 54.59 -19 46 03.3 V C40
2020-05-18 20:07:47 C 15 05 55.24 -19 46 05.2 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)