144901 (2004 WG1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5219161608 ± 1.35e-08
Semi-major axis (a)1.6399046216 AU ± 3.63e-09
Inclination (i)13.03627510° ± 4.26e-06
Long. of Asc. Node (Ω)41.97768639° ± 6.91e-06
Arg. of Perihelion (ω)232.48782326° ± 7.83e-06
Mean Anomaly (M)98.80911219° ± 1.27e-05
Mean Motion (n)0.4693365661°/day ± 1.56e-09
Perihelion dist (q)0.78401190 AU ± 2.22e-08
Aphelion dist (Q)2.49579735 AU ± 2.28e-08
Orbital Period2.10004154 yr ± 6.97e-09
Physical Parameters
H (abs. magnitude)17.54
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.381″
Uncertainty0
Orbit TypeApollo
MOID0.055629 AU
Observations Used626
Radar Obs Used4
Oppositions1
Arc Total2004-2006
First Observation Used2004-09-22
Last Observation Used2025-12-25
Observations (714)
Date Type RA Dec Mag Band Observatory
2008-04-10 04:48:51 C 09 03 19.11 +38 17 02.5 r 703
2008-04-10 04:56:47 C 09 03 18.68 +38 16 56.6 r 703
2008-04-17 05:57:40 C 08 57 43.77 +36 11 44.3 r 703
2008-04-17 06:09:31 C 08 57 43.38 +36 11 35.4 r 703
2008-04-17 06:21:29 C 08 57 43.20 +36 11 25.3 r 703
2008-04-27 03:30:05 C 08 55 07.11 +32 49 52.2 18.8 c 704
2008-04-27 03:59:16 C 08 55 07.00 +32 49 23.7 19.0 c 704
2008-04-27 04:13:47 C 08 55 07.03 +32 49 09.1 19.3 c 704
2008-04-27 04:28:38 C 08 55 06.91 +32 48 57.1 19.2 c 704
2008-05-01 03:33:02 C 08 55 27.24 +31 20 35.2 19.6 c 704
2008-05-01 03:48:29 C 08 55 27.27 +31 20 20.0 19.5 c 704
2008-05-01 04:03:52 C 08 55 27.32 +31 20 05.0 19.5 c 704
2008-05-01 04:19:15 C 08 55 27.38 +31 19 50.6 19.4 c 704
2008-05-01 04:34:40 C 08 55 27.51 +31 19 36.2 19.3 c 704
2008-09-06 18:38:10 C 04 15 46.94 -08 58 17.1 r E12
2008-09-06 18:52:56 C 04 15 45.18 -08 58 09.3 r E12
2008-09-06 19:22:06 C 04 15 41.68 -08 57 52.6 r E12
2008-09-14 03:52:11 C 03 54 29.54 -07 19 37.1 r J51
2008-09-14 03:58:01 C 03 54 28.74 -07 19 33.6 r J51
2008-09-14 04:03:53 C 03 54 27.93 -07 19 30.4 r J51
2008-09-15 02:26:36 C 03 51 35.81 -07 07 09.6 v 204
2008-09-15 02:31:14 C 03 51 35.19 -07 07 06.8 v 204
2008-09-21 15:42:40 C 03 30 20.59 -05 39 25.0 r E12
2008-09-21 15:55:08 C 03 30 18.75 -05 39 19.2 r E12
2008-09-21 16:07:38 C 03 30 16.88 -05 39 10.8 r E12
2008-09-21 16:20:08 C 03 30 15.12 -05 39 04.2 r E12
2008-10-01 09:06:01 C 02 56 08.73 -03 29 48.5 r 703
2008-10-01 09:17:42 C 02 56 07.00 -03 29 42.8 r 703
2008-10-01 09:29:30 C 02 56 05.13 -03 29 35.3 r 703
2008-10-01 09:41:17 C 02 56 03.26 -03 29 28.7 r 703
2008-10-05 21:30:18 C 02 40 03.74 -02 29 33.8 17.0 o 084
2008-10-06 01:46:16 C 02 39 25.32 -02 27 08.4 i 071
2008-10-06 01:47:40 C 02 39 25.15 -02 27 08.4 i 071
2008-10-07 20:30:09 C 02 33 13.50 -02 03 35.0 16.2 o 084
2008-10-08 00:08:18 C 02 32 41.41 -02 01 35.2 17.1 o 084
2008-10-08 00:11:32 C 02 32 40.98 -02 01 33.6 16.8 o 084
2008-10-08 09:22:34 C 02 31 21.75 -01 56 23.8 r 703
2008-10-08 09:31:52 C 02 31 20.38 -01 56 18.9 r 703
2008-10-08 09:41:27 C 02 31 18.94 -01 56 13.6 r 703
2008-10-08 09:51:04 C 02 31 17.54 -01 56 08.4 r 703
2008-10-09 01:23:45 C 02 29 04.28 -01 47 43.3 16.7 o 084
2008-10-09 01:26:59 C 02 29 03.80 -01 47 41.0 16.6 r 084
2008-10-12 20:40:48 C 02 16 26.09 -00 58 14.4 16.9 r 084
2008-10-20 20:43:47 C 01 52 42.27 +00 41 03.8 17.1 r 084
2008-10-20 20:47:00 C 01 52 41.84 +00 41 04.6 17.3 r 084
2008-10-22 07:44:24 C 01 48 52.41 +00 58 24.7 r G96
2008-10-22 07:51:59 C 01 48 51.58 +00 58 28.6 r G96
2008-10-22 07:59:40 C 01 48 50.72 +00 58 32.3 r G96
2008-10-22 08:07:11 C 01 48 49.89 +00 58 35.9 r G96
2008-10-23 20:29:43 C 01 45 02.75 +01 16 09.2 17.2 o 084
Radar Observations (4)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2006-04-11 09:55:00 114230.3266 2 Hz 2380 -1 -1
2006-04-11 10:52:00 91075429.82 3 us 2380 -1 -1
2006-04-11 10:52:00 111851.1004 2 Hz 2380 -1 -1
2006-04-13 09:21:00 64713.2365 2 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)