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
2009-12-09 03:38:52 C 07 33 04.47 +23 00 56.5 r J75
2009-12-09 03:57:35 C 07 33 06.68 +23 00 53.1 r J75
2009-12-09 04:16:28 C 07 33 08.82 +23 00 50.3 r J75
2009-12-09 05:11:58 C 07 33 15.23 +23 00 41.3 r J75
2009-12-09 05:43:15 C 07 33 18.92 +23 00 34.9 r J75
2009-12-09 20:01:20 C 07 35 08.01 +22 58 11.3 o 151
2009-12-09 20:11:37 C 07 35 09.30 +22 58 10.1 o 151
2009-12-09 20:21:54 C 07 35 10.58 +22 58 08.8 o 151
2009-12-09 21:42:54 C 07 35 20.60 +22 57 59.2 c 595
2009-12-09 21:57:23 C 07 35 22.36 +22 57 57.8 c 595
2009-12-09 21:58:48 C 07 35 22.62 +22 57 57.9 w 160
2009-12-09 22:02:35 C 07 35 23.08 +22 57 57.4 w 160
2009-12-09 22:06:32 C 07 35 23.56 +22 57 57.0 w 160
2009-12-09 22:10:18 C 07 35 24.03 +22 57 56.5 w 160
2009-12-09 22:12:10 C 07 35 24.19 +22 57 55.5 c 595
2009-12-09 22:14:25 C 07 35 24.52 +22 57 56.0 w 160
2009-12-09 22:18:33 C 07 35 25.02 +22 57 55.4 w 160
2009-12-09 22:22:25 C 07 35 25.49 +22 57 54.9 w 160
2009-12-09 22:26:24 C 07 35 25.97 +22 57 54.2 w 160
2009-12-09 22:36:01 C 07 35 27.51 +22 57 54.1 r J75
2009-12-09 22:41:42 C 07 35 28.19 +22 57 53.4 r J75
2009-12-09 22:47:24 C 07 35 28.89 +22 57 52.5 r J75
2009-12-09 22:56:54 C 07 35 29.66 +22 57 48.9 v 204
2009-12-09 23:01:26 C 07 35 30.21 +22 57 48.1 v 204
2009-12-09 23:05:57 C 07 35 30.76 +22 57 47.7 v 204
2009-12-09 23:10:28 C 07 35 31.30 +22 57 47.0 v 204
2009-12-09 23:12:34 C 07 35 31.80 +22 57 49.8 w B49
2009-12-09 23:13:30 C 07 35 31.67 +22 57 46.6 v 204
2009-12-09 23:19:01 C 07 35 32.59 +22 57 47.6 w B49
2009-12-09 23:37:51 C 07 35 34.53 +22 57 43.1 o A99
2009-12-09 23:39:01 C 07 35 34.63 +22 57 43.2 o A99
2009-12-09 23:40:10 C 07 35 34.87 +22 57 44.8 o A99
2009-12-09 23:48:51 C 07 35 35.87 +22 57 42.1 o A99
2009-12-09 23:52:30 C 07 35 36.41 +22 57 41.9 c A24
2009-12-09 23:53:09 C 07 35 36.40 +22 57 41.3 o A99
2009-12-09 23:55:19 C 07 35 36.64 +22 57 41.5 o A99
2009-12-09 23:56:02 C 07 35 36.81 +22 57 41.1 c A24
2009-12-09 23:57:27 C 07 35 36.95 +22 57 40.9 o A99
2009-12-09 23:59:32 C 07 35 37.25 +22 57 40.4 c A24
2009-12-10 00:03:03 C 07 35 37.59 +22 57 39.9 c A24
2009-12-10 00:06:33 C 07 35 38.12 +22 57 40.1 c A24
2009-12-10 00:13:54 C 07 35 39.334 +22 57 40.95 r J75
2009-12-10 00:23:23 C 07 35 40.483 +22 57 39.71 r J75
2009-12-10 00:32:32 C 07 35 41.579 +22 57 38.33 r J75
2009-12-10 03:34:14 C 07 36 03.262 +22 57 09.28 r J75
2009-12-10 03:53:15 C 07 36 05.529 +22 57 06.05 r J75
2009-12-10 04:02:43 C 07 36 06.679 +22 57 04.26 r J75
2009-12-10 04:13:22 C 07 36 07.951 +22 57 02.33 r J75
2009-12-10 22:51:57 C 07 38 34.91 +22 53 40.6 r J95
2009-12-10 23:00:16 C 07 38 35.98 +22 53 39.0 r J95
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)