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
2020-05-10 18:14:50 C 13 12 09.30 -12 10 30.9 V C40
2020-05-10 18:17:17 C 13 12 12.65 -12 10 49.0 V C40
2020-05-10 18:30:05 C 13 12 30.13 -12 12 22.5 V C40
2020-05-10 18:32:20 C 13 12 33.18 -12 12 38.9 V C40
2020-05-10 18:47:27 C 13 12 53.75 -12 14 28.7 V C40
2020-05-10 18:50:39 C 13 12 58.09 -12 14 51.9 V C40
2020-05-10 19:06:07 C 13 13 19.04 -12 16 43.5 V C40
2020-05-10 19:08:41 C 13 13 22.49 -12 17 02.0 V C40
2020-05-10 19:09:58 C 13 13 24.23 -12 17 11.3 V C40
2020-05-10 19:50:46 C 13 14 19.13 -12 22 02.0 V C40
2020-05-10 19:56:22 C 13 14 26.61 -12 22 41.5 V C40
2020-05-10 19:57:08 C 13 14 27.64 -12 22 46.9 V C40
2020-05-10 19:57:13 C 13 14 30.35 -12 22 56.2 V L18
2020-05-10 19:57:35 C 13 14 30.91 -12 22 58.5 V L18
2020-05-10 19:57:57 C 13 14 31.51 -12 22 59.8 V L18
2020-05-10 19:58:20 C 13 14 31.99 -12 23 03.6 V L18
2020-05-10 19:58:31 C 13 14 32.18 -12 23 05.2 V L18
2020-05-10 19:58:42 C 13 14 32.50 -12 23 08.0 V L18
2020-05-10 19:58:54 C 13 14 32.62 -12 23 07.3 V L18
2020-05-10 19:59:26 C 13 14 30.73 -12 23 03.1 V C40
2020-05-10 20:04:01 C 13 14 36.84 -12 23 35.2 V C40
2020-05-10 20:09:41 C 13 14 44.41 -12 24 15.1 V C40
2020-05-10 20:12:54 C 13 14 48.70 -12 24 37.7 V C40
2020-05-10 20:13:32 C 13 14 49.56 -12 24 42.1 V C40
2020-05-10 20:16:07 C 13 14 52.99 -12 25 00.3 V C40
2020-05-10 20:20:18 C 13 14 58.57 -12 25 29.4 V C40
2020-05-10 20:20:56 C 13 14 59.42 -12 25 33.8 V C40
2020-05-10 20:21:54 C 13 15 00.70 -12 25 40.6 V C40
2020-05-10 20:24:09 C 13 15 03.70 -12 25 56.5 V C40
2020-05-10 20:41:27 C 13 15 26.72 -12 27 56.5 V C40
2020-05-10 21:11:17 C 13 16 06.26 -12 31 22.0 V C40
2020-05-10 21:12:14 C 13 16 07.52 -12 31 28.6 V C40
2020-05-10 21:16:05 C 13 16 12.61 -12 31 54.8 V C40
2020-05-10 21:24:06 C 13 16 23.22 -12 32 49.7 V C40
2020-05-11 14:42:28 C 13 37 46.655 -14 15 52.04 V O85
2020-05-11 14:43:31 C 13 37 47.754 -14 15 57.44 V O85
2020-05-11 14:49:05 C 13 37 53.574 -14 16 26.09 V O85
2020-05-11 14:50:08 C 13 37 54.656 -14 16 31.35 V O85
2020-05-11 14:56:45 C 13 38 01.587 -14 17 05.58 V O85
2020-05-11 14:57:49 C 13 38 02.677 -14 17 11.04 V O85
2020-05-11 15:05:29 C 13 38 10.691 -14 17 50.16 V O85
2020-05-11 15:06:33 C 13 38 11.778 -14 17 55.62 V O85
2020-05-11 17:41:09 C 13 41 04.62 -14 31 07.3 V C40
2020-05-11 17:45:06 C 13 41 08.66 -14 31 27.1 V C40
2020-05-11 17:48:45 C 13 41 12.38 -14 31 45.4 V C40
2020-05-11 18:31:25 C 13 41 55.59 -14 35 15.3 V C40
2020-05-11 18:43:47 C 13 42 08.02 -14 36 15.4 V C40
2020-05-11 18:49:15 C 13 42 13.50 -14 36 41.7 V C40
2020-05-11 18:59:05 C 13 42 23.35 -14 37 29.0 V C40
2020-05-11 20:58:05 C 13 44 25.24 -14 46 42.5 q K73
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)