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
2010-01-06 11:32:39 C 11 47 03.57 +06 10 13.7 o H21
2010-01-06 11:36:41 C 11 47 07.10 +06 09 50.9 o H21
2010-01-06 11:41:02 C 11 47 10.86 +06 09 26.9 o H21
2010-01-06 11:45:36 C 11 47 14.90 +06 09 01.4 o H21
2010-01-07 11:28:52 C 12 08 46.94 +03 53 16.6 o 291
2010-01-07 11:34:18 C 12 08 51.77 +03 52 44.2 o 291
2010-01-07 11:40:04 C 12 08 56.91 +03 52 10.1 o 291
2010-01-08 08:09:07 C 12 27 48.74 +01 52 28.0 r I20
2010-01-08 08:21:03 C 12 27 59.40 +01 51 17.2 r I20
2010-01-08 11:10:36 C 12 30 36.48 +01 32 23.6 o 695
2010-01-08 11:11:34 C 12 30 37.34 +01 32 17.8 o 695
2010-01-08 11:12:23 C 12 30 38.08 +01 32 12.9 o 695
2010-01-08 11:13:13 C 12 30 38.83 +01 32 08.0 o 695
2010-01-08 11:38:57 C 12 31 01.84 +01 29 32.1 r 703
2010-01-08 11:45:38 C 12 31 07.82 +01 28 52.5 r 703
2010-01-08 11:52:17 C 12 31 13.80 +01 28 12.9 r 703
2010-01-08 13:25:06 C 12 32 37.09 +01 18 56.7 o 695
2010-01-08 13:26:03 C 12 32 37.93 +01 18 51.0 o 695
2010-01-08 13:26:54 C 12 32 38.67 +01 18 46.0 o 695
2010-01-08 13:27:43 C 12 32 39.43 +01 18 41.1 o 695
2010-01-08 13:35:36 C 12 32 46.39 +01 17 52.6 r G96
2010-01-08 13:36:02 C 12 32 46.78 +01 17 50.2 r G96
2010-01-08 13:36:27 C 12 32 47.14 +01 17 47.6 r G96
2010-01-08 13:36:53 C 12 32 47.54 +01 17 44.9 r G96
2010-01-08 13:37:38 C 12 32 48.22 +01 17 39.9 r G96
2010-01-08 13:38:03 C 12 32 48.58 +01 17 38.2 r G96
2010-01-08 13:38:29 C 12 32 48.98 +01 17 35.7 r G96
2010-01-08 13:38:53 C 12 32 49.34 +01 17 33.0 r G96
2010-01-08 13:40:01 C 12 32 50.31 +01 17 26.1 r G96
2010-01-08 13:40:27 C 12 32 50.74 +01 17 23.6 r G96
2010-01-08 13:40:48 C 12 32 51.03 +01 17 21.5 r G96
2010-01-08 13:41:01 C 12 32 51.33 +01 17 21.4 o 695
2010-01-08 13:41:14 C 12 32 51.43 +01 17 18.6 r G96
2010-01-08 13:43:25 C 12 32 53.48 +01 17 06.9 o 695
2010-01-08 13:45:12 C 12 32 55.09 +01 16 56.3 o 695
2010-01-08 13:46:47 C 12 32 56.47 +01 16 46.6 o 695
2010-01-10 09:47:08 C 13 13 08.08 -03 04 08.7 o H21
2010-01-10 09:49:27 C 13 13 10.11 -03 04 21.8 o H21
2010-01-10 09:51:48 C 13 13 12.11 -03 04 35.7 o H21
2010-01-10 09:54:06 C 13 13 14.16 -03 04 48.7 o H21
2010-01-10 11:52:26 C 13 14 56.88 -03 16 08.9 o H21
2010-01-10 11:56:36 C 13 15 00.48 -03 16 32.9 o H21
2010-01-10 12:00:38 C 13 15 03.98 -03 16 55.8 o H21
2010-01-10 12:04:32 C 13 15 07.36 -03 17 18.4 o H21
2010-01-11 12:49:53 C 13 36 43.48 -05 34 32.6 o 291
2010-01-11 13:02:03 C 13 36 53.55 -05 35 38.0 o 291
2010-01-12 11:00:06 C 13 55 10.93 -07 28 45.4 17.8 c 704
2010-01-12 11:18:10 C 13 55 25.18 -07 30 15.4 18.2 c 704
2010-01-12 11:36:14 C 13 55 39.38 -07 31 44.8 18.2 c 704
2010-01-12 11:54:18 C 13 55 53.58 -07 33 14.0 18.4 c 704
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)