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
2014-12-08 10:59:01 C 03 59 37.154 +21 24 19.04 L F51
2014-12-10 01:34:50 C 03 55 29.10 +21 13 46.0 t 204
2014-12-10 01:55:52 C 03 55 26.80 +21 13 40.1 t 204
2014-12-10 02:20:17 C 03 55 24.06 +21 13 32.4 t 204
2014-12-10 10:28:24 C 03 54 31.498 +21 11 27.18 L F51
2014-12-10 10:45:52 C 03 54 29.494 +21 11 22.02 L F51
2014-12-10 11:03:24 C 03 54 27.485 +21 11 16.84 L F51
2014-12-10 11:20:51 C 03 54 25.498 +21 11 11.56 L F51
2014-12-11 04:43:39 C 03 52 32.58 +21 06 09.8 o 691
2014-12-11 05:18:03 C 03 52 28.61 +21 05 59.9 o 691
2014-12-11 05:52:28 C 03 52 24.62 +21 05 49.9 o 691
2014-12-15 02:12:59 C 03 42 03.75 +20 37 03.4 o 691
2014-12-15 03:45:17 C 03 41 52.76 +20 36 34.9 o 691
2014-12-15 05:22:35 C 03 41 41.14 +20 36 02.8 o 691
2014-12-23 02:25:55 C 03 19 59.17 +19 27 10.2 q 703
2014-12-23 02:33:08 C 03 19 58.29 +19 27 06.3 q G96
2014-12-23 02:33:10 C 03 19 58.21 +19 27 07.0 q 703
2014-12-23 02:40:27 C 03 19 57.35 +19 27 04.5 q 703
2014-12-23 02:47:43 C 03 19 56.58 +19 27 01.0 q 703
2014-12-23 02:51:18 C 03 19 56.13 +19 26 59.7 q G96
2014-12-23 02:58:40 C 03 19 55.27 +19 26 57.1 q G96
2014-12-23 03:06:02 C 03 19 54.36 +19 26 54.3 q G96
2014-12-28 03:29:50 C 03 06 32.15 +18 38 57.4 R G45
2014-12-28 03:35:48 C 03 06 31.46 +18 38 55.1 R G45
2014-12-28 03:47:50 C 03 06 30.09 +18 38 50.0 R G45
2014-12-28 03:57:35 C 03 06 28.99 +18 38 46.4 R G45
2014-12-30 03:23:05 C 03 01 26.93 +18 19 38.2 R G45
2014-12-30 03:29:09 C 03 01 26.21 +18 19 35.8 R G45
2014-12-30 03:35:08 C 03 01 25.54 +18 19 33.5 R G45
2014-12-30 03:50:50 C 03 01 23.78 +18 19 27.1 R G45
2015-01-10 06:29:41 C 02 36 09.929 +16 35 44.22 L F51
2015-01-10 06:48:36 C 02 36 08.177 +16 35 37.09 L F51
2015-01-10 07:07:38 C 02 36 06.422 +16 35 29.84 L F51
2015-01-10 07:26:33 C 02 36 04.675 +16 35 22.59 L F51
2015-01-16 03:15:33 C 02 24 57.22 +15 45 38.7 R G45
2015-01-16 04:06:24 C 02 24 53.05 +15 45 21.1 R G45
2015-01-16 05:20:56 C 02 24 47.00 +15 44 52.6 R G45
2015-01-16 05:27:00 C 02 24 46.57 +15 44 51.0 R G45
2015-01-16 05:39:22 C 02 24 45.54 +15 44 45.5 R G45
2015-01-17 03:19:16 C 02 23 09.34 +15 37 25.7 R G45
2015-01-17 03:25:14 C 02 23 08.88 +15 37 23.8 R G45
2015-01-17 03:38:55 C 02 23 07.75 +15 37 19.5 R G45
2015-01-17 03:47:13 C 02 23 07.10 +15 37 16.1 R G45
2015-01-17 03:59:08 C 02 23 06.16 +15 37 11.5 R G45
2015-01-17 04:32:30 C 02 23 03.51 +15 37 02.2 q 703
2015-01-17 04:44:02 C 02 23 02.61 +15 36 57.3 q 703
2015-01-17 04:49:48 C 02 23 02.13 +15 36 54.9 q 703
2015-01-17 05:17:17 C 02 22 59.91 +15 36 44.2 R G45
2015-01-17 05:35:57 C 02 22 58.45 +15 36 36.4 R G45
2015-01-18 03:09:04 C 02 21 24.22 +15 29 23.2 R G45
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)