2329 Orthos (1976 WA)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6533456164 ± 5.97e-09
Semi-major axis (a)2.4113099256 AU ± 1.95e-09
Inclination (i)24.46389629° ± 2.94e-07
Long. of Asc. Node (Ω)169.24806462° ± 7.20e-07
Arg. of Perihelion (ω)146.10872860° ± 9.78e-07
Mean Anomaly (M)71.29202635° ± 1.34e-06
Mean Motion (n)0.2632283887°/day ± 3.20e-10
Perihelion dist (q)0.83589116 AU ± 1.44e-08
Aphelion dist (Q)3.98672870 AU ± 1.48e-08
Orbital Period3.74437684 yr ± 4.55e-09
Physical Parameters
H (abs. magnitude)14.57
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.022″
Uncertainty0
Orbit TypeApollo
MOID0.094617 AU
Observations Used1705
Gaia Obs Used109
Oppositions30
Arc Total1976-2026
First Observation Used1976-05-31
Last Observation Used2026-03-04
Observations (1882)
Date Type RA Dec Mag Band Observatory
2009-02-19 06:44:33 C 10 48 27.50 +00 53 34.9 r 703
2009-02-19 06:56:07 C 10 48 27.07 +00 53 39.0 r 703
2009-02-19 07:07:44 C 10 48 26.56 +00 53 42.9 r 703
2009-02-19 07:19:13 C 10 48 26.17 +00 53 47.2 r 703
2009-02-27 06:20:35 C 10 40 56.35 +02 04 22.2 19.6 c 704
2009-02-27 06:36:44 C 10 40 55.69 +02 04 27.0 19.7 c 704
2009-02-27 06:53:26 C 10 40 54.98 +02 04 34.0 19.6 c 704
2009-02-27 07:00:18 C 10 40 54.69 +02 04 37.5 r 703
2009-02-27 07:11:01 C 10 40 54.23 +02 04 41.2 19.3 c 704
2009-02-27 07:14:58 C 10 40 54.04 +02 04 42.4 r 703
2009-02-27 07:26:55 C 10 40 53.59 +02 04 46.7 20.2 c 704
2009-02-27 07:29:39 C 10 40 53.47 +02 04 48.7 r 703
2009-02-27 07:44:17 C 10 40 52.86 +02 04 53.9 r 703
2009-03-03 23:22:01 C 10 36 21.29 +02 48 40.0 c A50
2009-03-03 23:24:18 C 10 36 21.17 +02 48 40.7 c A50
2009-03-04 00:11:42 C 10 36 19.24 +02 48 59.3 c A50
2009-03-14 21:20:37 C 10 25 52.24 +04 34 28.8 r J75
2009-03-14 21:38:40 C 10 25 51.56 +04 34 36.8 r J75
2009-03-14 21:57:04 C 10 25 50.83 +04 34 44.1 r J75
2009-03-26 08:48:15 C 10 15 56.12 +06 22 57.5 r G96
2009-03-26 08:58:24 C 10 15 55.72 +06 23 01.7 r G96
2009-03-26 09:08:32 C 10 15 55.44 +06 23 05.3 r G96
2009-03-26 09:18:42 C 10 15 55.11 +06 23 09.0 r G96
2010-11-02 14:09:16 C 07 37 15.993 -06 48 35.32 L F51
2010-11-02 14:22:47 C 07 37 15.947 -06 48 40.05 L F51
2010-12-08 12:46:25 C 07 17 31.01 -10 19 08.5 568
2010-12-08 12:53:51 C 07 17 30.69 -10 19 09.2 568
2010-12-08 12:59:06 C 07 17 30.48 -10 19 09.6 568
2012-01-06 06:19:18 C 09 30 09.89 -03 29 09.8 L W91
2012-01-06 06:35:27 C 09 30 09.46 -03 29 08.7 L W91
2012-01-06 06:39:29 C 09 30 09.37 -03 29 08.4 L W91
2012-01-06 06:45:39 C 09 30 09.19 -03 29 08.0 L W91
2012-01-06 06:48:40 C 09 30 09.12 -03 29 07.7 L W91
2012-01-25 09:53:50 C 09 15 56.691 -02 30 18.34 L F51
2012-01-25 10:14:24 C 09 15 55.949 -02 30 14.57 L F51
2012-01-25 10:35:02 C 09 15 55.211 -02 30 10.75 L F51
2012-01-25 10:55:41 C 09 15 54.465 -02 30 06.83 L F51
2013-01-26 05:54:13 C 12 06 07.77 -02 11 01.0 L 309
2013-01-26 06:03:46 C 12 06 07.72 -02 10 59.2 L 309
2013-01-26 06:08:30 C 12 06 07.68 -02 10 58.3 L 309
2013-01-26 06:13:31 C 12 06 07.65 -02 10 57.3 L 309
2013-01-26 06:16:31 C 12 06 07.61 -02 10 56.5 u 807
2013-01-26 06:25:10 C 12 06 07.56 -02 10 55.0 u 807
2013-01-26 06:33:01 C 12 06 07.51 -02 10 53.6 u 807
2013-02-07 11:13:13 C 12 02 37.49 -01 00 00.4 o 691
2013-02-07 11:35:06 C 12 02 37.07 -00 59 54.0 o 691
2013-02-07 11:56:59 C 12 02 36.65 -00 59 47.4 o 691
2013-02-14 09:48:18 C 11 59 00.88 -00 04 48.2 r 703
2013-02-14 10:02:58 C 11 59 00.42 -00 04 41.8 r 703
2013-02-14 10:17:38 C 11 59 00.06 -00 04 36.8 r 703