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
2020-05-11 21:03:29 C 13 44 30.48 -14 47 07.6 q K73
2020-05-11 21:08:15 C 13 44 35.00 -14 47 29.7 q K73
2020-05-11 22:32:40 C 13 45 58.09 -14 54 13.0 V G33
2020-05-11 22:34:25 C 13 45 59.70 -14 54 20.8 V G33
2020-05-11 22:36:20 C 13 46 01.66 -14 54 30.0 V G33
2020-05-12 10:41:58 C 13 57 14.92 -15 42 51.0 V T05
2020-05-12 10:46:36 C 13 57 18.70 -15 43 07.9 V T05
2020-05-12 10:54:39 C 13 57 25.28 -15 43 36.8 V T05
2020-05-12 11:16:31 C 13 57 43.13 -15 44 55.2 V T05
2020-05-13 05:50:23 C 14 12 18.68 -16 45 08.2 V G96
2020-05-13 05:57:58 C 14 12 23.67 -16 45 29.6 V G96
2020-05-13 06:05:33 C 14 12 28.62 -16 45 50.6 V G96
2020-05-13 06:13:07 C 14 12 33.57 -16 46 11.7 V G96
2020-05-13 09:23:40 C 14 14 44.08 -16 54 20.8 V T05
2020-05-13 09:34:18 C 14 14 50.72 -16 54 48.9 V T05
2020-05-13 09:38:56 C 14 14 53.61 -16 55 00.9 V T05
2020-05-13 10:02:06 C 14 15 08.02 -16 56 01.1 V T05
2020-05-13 17:57:44 C 14 20 21.28 -17 16 21.7 V C40
2020-05-13 17:59:07 C 14 20 22.10 -17 16 25.4 V C40
2020-05-13 18:01:12 C 14 20 23.32 -17 16 30.5 V C40
2020-05-13 18:01:54 C 14 20 23.73 -17 16 32.2 V C40
2020-05-13 18:03:18 C 14 20 24.55 -17 16 35.5 V C40
2020-05-13 18:04:00 C 14 20 24.96 -17 16 37.1 V C40
2020-05-13 18:06:06 C 14 20 26.19 -17 16 42.3 V C40
2020-05-13 18:10:59 C 14 20 29.05 -17 16 54.2 V C40
2020-05-13 18:13:46 C 14 20 30.68 -17 17 01.0 V C40
2020-05-13 18:14:28 C 14 20 31.08 -17 17 02.5 V C40
2020-05-13 18:17:58 C 14 20 33.12 -17 17 10.9 V C40
2020-05-13 18:19:22 C 14 20 33.94 -17 17 14.5 V C40
2020-05-13 18:21:27 C 14 20 35.15 -17 17 19.4 V C40
2020-05-13 18:24:14 C 14 20 36.78 -17 17 26.1 V C40
2020-05-13 18:25:37 C 14 20 37.58 -17 17 29.4 V C40
2020-05-13 18:26:20 C 14 20 38.00 -17 17 31.1 V C40
2020-05-13 18:27:44 C 14 20 38.81 -17 17 34.4 V C40
2020-05-13 18:28:26 C 14 20 39.21 -17 17 36.1 V C40
2020-05-13 18:31:54 C 14 20 41.24 -17 17 44.5 V C40
2020-05-13 18:33:19 C 14 20 42.05 -17 17 47.8 V C40
2020-05-13 18:36:06 C 14 20 43.67 -17 17 54.6 V C40
2020-05-13 18:41:24 C 14 20 46.75 -17 18 07.2 V C40
2020-05-13 18:42:07 C 14 20 47.16 -17 18 08.8 V C40
2020-05-13 18:43:30 C 14 20 47.95 -17 18 12.1 V C40
2020-05-13 18:44:11 C 14 20 48.36 -17 18 13.9 V C40
2020-05-13 18:44:53 C 14 20 48.77 -17 18 15.4 V C40
2020-05-13 18:45:36 C 14 20 49.17 -17 18 17.2 V C40
2020-05-13 18:48:23 C 14 20 50.78 -17 18 23.8 V C40
2020-05-13 18:52:35 C 14 20 53.20 -17 18 33.8 V C40
2020-05-13 18:53:16 C 14 20 53.60 -17 18 35.4 V C40
2020-05-13 18:53:59 C 14 20 54.01 -17 18 37.1 V C40
2020-05-13 18:54:39 C 14 20 54.40 -17 18 38.7 V C40
2020-05-13 18:55:22 C 14 20 54.80 -17 18 40.3 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)