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
2009-12-25 22:29:02 C 08 56 13.94 +20 01 39.8 r J95
2009-12-25 22:36:14 C 08 56 16.48 +20 01 32.8 r J95
2009-12-25 22:43:33 C 08 56 19.05 +20 01 24.9 r J95
2009-12-26 07:59:11 C 08 59 42.51 +19 51 06.4 o 291
2009-12-26 08:05:04 C 08 59 44.61 +19 50 59.8 o 291
2009-12-26 08:10:43 C 08 59 46.66 +19 50 52.6 o 291
2009-12-27 05:45:17 C 09 08 11.54 +19 23 08.0 o H01
2009-12-27 05:57:13 C 09 08 16.27 +19 22 52.3 o H01
2009-12-27 06:05:32 C 09 08 19.58 +19 22 41.4 o H01
2009-12-27 06:17:10 C 09 08 24.19 +19 22 26.2 o H01
2009-12-28 04:00:15 C 09 17 34.59 +18 50 13.6 u 932
2009-12-28 04:03:16 C 09 17 35.88 +18 50 08.8 u 932
2009-12-28 04:08:36 C 09 17 38.16 +18 50 00.8 u 932
2009-12-28 04:10:58 C 09 17 39.21 +18 49 57.3 u 932
2009-12-29 06:52:25 C 09 29 59.54 +18 03 46.2 r 932
2009-12-29 06:55:51 C 09 30 01.16 +18 03 39.6 r 932
2009-12-29 07:00:45 C 09 30 03.47 +18 03 30.5 r 932
2009-12-29 09:25:15 C 09 31 12.81 +17 58 57.6 o H21
2009-12-29 09:28:45 C 09 31 14.48 +17 58 50.9 o H21
2009-12-29 09:30:45 C 09 31 15.43 +17 58 47.0 o H21
2009-12-29 09:32:46 C 09 31 16.39 +17 58 43.1 o H21
2009-12-29 09:37:08 C 09 31 18.46 +17 58 34.7 o H21
2009-12-29 15:52:24 C 09 34 28.60 +17 46 19.3 r 900
2009-12-29 15:57:40 C 09 34 31.16 +17 46 08.9 r 900
2009-12-29 16:02:56 C 09 34 33.73 +17 45 58.7 r 900
2010-01-02 06:24:26 C 10 26 03.34 +13 53 02.3 r 448
2010-01-02 06:28:20 C 10 26 06.06 +13 52 48.7 r 448
2010-01-02 06:32:15 C 10 26 08.71 +13 52 35.3 r 448
2010-01-03 09:27:42 C 10 45 35.90 +12 10 49.9 u 448
2010-01-03 09:33:02 C 10 45 39.87 +12 10 28.4 u 448
2010-01-03 09:39:05 C 10 45 44.29 +12 10 03.6 u 448
2010-01-03 10:15:43 C 10 46 09.41 +12 07 24.1 o H21
2010-01-03 10:19:45 C 10 46 12.38 +12 07 07.7 o H21
2010-01-03 10:23:56 C 10 46 15.47 +12 06 50.3 o H21
2010-01-03 10:27:51 C 10 46 18.34 +12 06 34.3 o H21
2010-01-03 11:25:44 C 10 47 01.02 +12 02 35.3 o H21
2010-01-03 11:28:42 C 10 47 03.25 +12 02 23.1 o H21
2010-01-03 11:31:16 C 10 47 05.16 +12 02 13.0 o H21
2010-01-03 11:33:17 C 10 47 06.61 +12 02 04.1 o H21
2010-01-04 08:14:16 C 11 03 22.42 +10 32 02.6 o H21
2010-01-04 08:20:36 C 11 03 27.39 +10 31 34.3 o H21
2010-01-04 08:31:13 C 11 03 35.73 +10 30 45.6 o H21
2010-01-04 08:34:55 C 11 03 38.64 +10 30 28.1 o H21
2010-01-04 08:37:42 C 11 03 40.82 +10 30 15.9 o H21
2010-01-04 08:41:56 C 11 03 44.16 +10 29 56.7 o H21
2010-01-05 09:54:10 C 11 24 41.88 +08 27 40.7 o 291
2010-01-05 09:59:52 C 11 24 46.60 +08 27 12.3 o 291
2010-01-05 10:05:19 C 11 24 51.19 +08 26 44.1 o 291
2010-01-06 11:23:15 C 11 46 55.41 +06 11 07.4 o H21
2010-01-06 11:28:21 C 11 46 59.83 +06 10 37.8 o H21
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)