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
2002-02-07 11:43:21 C 13 01 09.86 -01 45 33.4 19.2 c 704
2002-02-07 12:05:02 C 13 01 09.91 -01 45 26.7 19.6 c 704
2002-02-07 12:27:17 C 13 01 09.97 -01 45 20.4 19.3 c 704
2002-02-10 10:58:50 C 13 01 18.61 -01 22 43.6 19.0 c 704
2002-02-10 11:19:36 C 13 01 18.60 -01 22 36.1 19.1 c 704
2002-02-10 11:40:21 C 13 01 18.60 -01 22 29.4 19.2 c 704
2002-02-10 12:01:01 C 13 01 18.59 -01 22 22.0 19.2 c 704
2002-02-10 12:21:37 C 13 01 18.50 -01 22 14.8 19.1 c 704
2002-02-15 09:29:40 C 13 01 02.47 -00 39 03.7 18.7 c 704
2002-02-15 09:50:13 C 13 01 02.34 -00 38 56.4 18.9 c 704
2002-02-15 10:11:11 C 13 01 02.23 -00 38 48.0 19.0 c 704
2002-02-15 10:31:50 C 13 01 02.10 -00 38 39.3 19.3 c 704
2002-02-15 10:52:33 C 13 01 02.00 -00 38 30.5 19.3 c 704
2002-03-10 13:46:18 C 12 50 18.78 +04 25 39.4 18.7 c 608
2002-03-10 14:01:24 C 12 50 18.26 +04 25 49.6 18.8 c 608
2002-03-10 14:16:22 C 12 50 17.73 +04 25 59.9 18.7 c 608
2002-03-12 10:04:59 C 12 48 45.62 +04 56 40.5 18.8 c 704
2002-03-12 10:31:14 C 12 48 44.59 +04 56 58.6 19.2 c 704
2002-03-12 10:57:21 C 12 48 43.66 +04 57 17.7 18.4 c 704
2002-03-12 11:23:15 C 12 48 42.73 +04 57 36.3 18.9 c 704
2002-03-13 07:50:04 C 12 47 57.82 +05 12 12.8 17.5 c 704
2002-03-13 08:09:31 C 12 47 57.07 +05 12 26.9 17.6 c 704
2002-03-13 08:28:26 C 12 47 56.33 +05 12 40.8 17.9 c 704
2002-03-15 08:32:59 C 12 46 05.20 +05 47 45.9 c 670
2002-03-15 10:56:20 C 12 45 59.39 +05 49 30.7 c 670
2002-03-20 07:23:38 C 12 41 02.72 +07 17 56.5 18.0 c 704
2002-03-20 07:43:57 C 12 41 01.79 +07 18 12.4 18.0 c 704
2002-03-20 08:13:05 C 12 41 00.43 +07 18 35.4 18.2 c 704
2002-03-21 07:12:19 C 12 39 57.70 +07 36 30.3 17.2 c 704
2002-03-21 07:26:07 C 12 39 57.08 +07 36 41.3 17.5 c 704
2002-03-21 07:30:00 C 12 39 56.87 +07 36 44.4 17.5 c 704
2002-03-21 07:45:34 C 12 39 56.16 +07 36 56.3 17.8 c 704
2002-03-21 07:46:58 C 12 39 56.03 +07 36 57.7 17.8 c 704
2002-03-21 08:03:57 C 12 39 55.24 +07 37 10.9 17.6 c 704
2002-03-21 08:04:53 C 12 39 55.24 +07 37 11.6 17.9 c 704
2002-03-21 08:20:56 C 12 39 54.44 +07 37 24.1 17.6 c 704
2002-03-21 08:23:09 C 12 39 54.37 +07 37 26.0 17.3 c 704
2002-03-21 08:41:18 C 12 39 53.48 +07 37 39.9 17.6 c 704
2002-03-25 23:58:48 C 12 34 32.16 +09 05 55.0 c 198
2002-03-26 00:03:25 C 12 34 31.94 +09 05 58.3 c 198
2002-03-26 00:15:19 C 12 34 31.32 +09 06 07.7 c 198
2002-04-01 10:42:09 C 12 26 27.73 +11 10 18.6 17.2 c 644
2002-04-01 10:57:28 C 12 26 26.89 +11 10 30.8 17.3 c 644
2002-04-01 11:12:35 C 12 26 26.07 +11 10 42.9 17.2 c 644
2002-04-01 21:09:00 C 12 25 54.36 +11 18 40.1 c 198
2002-04-01 21:14:42 C 12 25 54.03 +11 18 44.3 c 198
2002-04-01 21:16:48 C 12 25 53.91 +11 18 45.8 c 198
2002-04-02 22:31:59 C 12 24 31.63 +11 38 53.7 c 113
2002-04-02 22:34:26 C 12 24 31.50 +11 38 55.6 c 113
2002-04-02 22:36:51 C 12 24 31.36 +11 38 57.6 c 113