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 16:36:33 C 15 18 22.14 -20 18 00.1 Y 190
2020-05-21 16:37:26 C 15 18 22.16 -20 18 01.2 Y 190
2020-05-21 16:38:20 C 15 18 22.37 -20 18 00.4 Y 190
2020-05-21 16:39:13 C 15 18 22.50 -20 18 00.6 Y 190
2020-05-21 16:40:07 C 15 18 22.53 -20 18 01.5 Y 190
2020-05-21 17:04:47 C 15 18 25.79 -20 18 11.8 Y 190
2020-05-21 17:05:40 C 15 18 25.82 -20 18 11.4 Y 190
2020-05-21 17:06:34 C 15 18 25.97 -20 18 12.6 Y 190
2020-05-21 17:07:27 C 15 18 26.11 -20 18 13.0 Y 190
2020-05-21 17:08:20 C 15 18 26.19 -20 18 13.3 Y 190
2020-05-21 17:09:14 C 15 18 26.27 -20 18 13.5 Y 190
2020-05-21 17:10:07 C 15 18 26.47 -20 18 13.6 Y 190
2020-05-21 17:11:01 C 15 18 26.55 -20 18 13.8 Y 190
2020-05-21 17:11:54 C 15 18 26.68 -20 18 14.0 Y 190
2020-05-21 17:14:34 C 15 18 26.98 -20 18 15.4 Y 190
2020-05-21 17:15:28 C 15 18 27.14 -20 18 15.7 Y 190
2020-05-21 17:16:22 C 15 18 27.24 -20 18 16.3 Y 190
2020-05-21 17:17:15 C 15 18 27.33 -20 18 16.7 Y 190
2020-05-21 17:18:09 C 15 18 27.49 -20 18 16.7 Y 190
2020-05-21 17:19:01 C 15 18 27.59 -20 18 16.9 Y 190
2020-05-21 17:19:55 C 15 18 27.69 -20 18 17.3 Y 190
2020-05-21 17:20:49 C 15 18 27.78 -20 18 18.1 Y 190
2020-05-21 17:21:42 C 15 18 27.95 -20 18 18.1 Y 190
2020-05-21 17:24:23 C 15 18 28.27 -20 18 19.3 Y 190
2020-05-21 17:25:16 C 15 18 28.36 -20 18 19.4 Y 190
2020-05-21 17:26:10 C 15 18 28.45 -20 18 19.7 Y 190
2020-05-21 17:28:50 C 15 18 28.83 -20 18 21.5 Y 190
2020-05-21 17:29:43 C 15 18 28.94 -20 18 21.4 Y 190
2020-05-21 17:30:37 C 15 18 29.02 -20 18 21.6 Y 190
2020-05-21 17:34:10 C 15 18 29.49 -20 18 23.1 Y 190
2020-05-21 17:35:04 C 15 18 29.61 -20 18 23.3 Y 190
2020-05-21 17:35:57 C 15 18 29.74 -20 18 23.8 Y 190
2020-05-21 17:36:51 C 15 18 29.82 -20 18 24.3 Y 190
2020-05-21 17:37:45 C 15 18 29.98 -20 18 24.4 Y 190
2020-05-21 17:38:38 C 15 18 30.11 -20 18 24.7 Y 190
2020-05-21 17:39:32 C 15 18 30.23 -20 18 25.2 Y 190
2020-05-21 17:44:00 C 15 18 30.76 -20 18 26.9 Y 190
2020-05-21 17:44:52 C 15 18 30.90 -20 18 27.5 Y 190
2020-05-21 17:45:46 C 15 18 31.02 -20 18 27.7 Y 190
2020-05-21 17:46:39 C 15 18 31.12 -20 18 27.7 Y 190
2020-05-21 17:48:27 C 15 18 31.35 -20 18 28.5 Y 190
2020-05-21 17:49:20 C 15 18 31.48 -20 18 29.0 Y 190
2020-05-21 17:50:13 C 15 18 31.56 -20 18 29.4 Y 190
2020-05-21 17:53:47 C 15 18 32.02 -20 18 30.4 Y 190
2020-05-21 17:54:40 C 15 18 32.13 -20 18 30.9 Y 190
2020-05-21 17:55:33 C 15 18 32.26 -20 18 31.3 Y 190
2020-05-21 17:56:27 C 15 18 32.34 -20 18 31.7 Y 190
2020-05-21 17:57:20 C 15 18 32.48 -20 18 31.9 Y 190
2020-05-21 17:58:13 C 15 18 32.58 -20 18 32.3 Y 190
2020-05-21 17:59:07 C 15 18 32.71 -20 18 32.5 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)