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
2017-05-31 04:37:29 C 12 20 24.54 +30 16 34.1 q 703
2017-05-31 05:09:16 C 12 20 24.09 +30 16 38.6 q 703
2017-05-31 05:17:03 C 12 20 23.96 +30 16 40.1 q 703
2017-05-31 05:23:23 C 12 20 23.88 +30 16 41.1 q 703
2017-05-31 20:23:31 C 12 20 13.72 +30 18 59.1 q 160
2017-05-31 20:25:33 C 12 20 13.68 +30 18 59.3 q 160
2017-05-31 20:27:28 C 12 20 13.66 +30 18 59.7 q 160
2017-06-01 22:13:07 C 12 19 58.19 +30 22 36.8 u 118
2017-06-01 22:53:51 C 12 19 57.80 +30 22 41.9 u 118
2017-06-01 23:30:53 C 12 19 57.45 +30 22 46.3 u 118
2017-06-03 06:09:32 C 12 19 44.16 +30 26 37.1 L T08
2017-06-03 06:21:55 C 12 19 44.05 +30 26 38.6 L T08
2017-06-03 06:46:45 C 12 19 43.83 +30 26 41.3 L T08
2017-06-03 07:09:07 C 12 19 43.62 +30 26 43.8 L T08
2017-06-03 20:11:39 C 12 19 39.23 +30 28 04.3 q 160
2017-06-03 20:13:42 C 12 19 39.21 +30 28 04.5 q 160
2017-06-03 20:15:43 C 12 19 39.21 +30 28 04.5 q 160
2017-06-07 20:09:43 C 12 19 31.56 +30 35 14.8 q 160
2017-06-07 20:13:57 C 12 19 31.57 +30 35 15.1 q 160
2017-06-10 02:53:45 C 12 19 46.40 +30 37 00.2 q W33
2017-06-10 03:08:08 C 12 19 46.53 +30 37 01.5 q W33
2017-06-10 21:17:36 C 12 19 54.56 +30 37 11.7 u 118
2017-06-10 22:46:29 C 12 19 55.19 +30 37 11.2 u 118
2017-06-11 20:33:21 C 12 20 07.14 +30 37 15.0 q 160
2017-06-11 20:35:23 C 12 20 07.15 +30 37 14.9 q 160
2017-06-11 20:37:23 C 12 20 07.16 +30 37 14.9 q 160
2017-06-13 07:41:08 C 12 20 30.55 +30 36 50.5 L T05
2017-06-13 07:56:31 C 12 20 30.70 +30 36 49.8 L T05
2017-06-13 08:11:09 C 12 20 30.86 +30 36 49.5 L T05
2017-06-13 08:27:18 C 12 20 31.03 +30 36 48.7 L T05
2017-06-15 21:03:15 C 12 21 24.98 +30 34 30.0 u 118
2017-06-15 21:44:00 C 12 21 25.63 +30 34 27.4 u 118
2017-06-15 22:13:37 C 12 21 26.11 +30 34 25.6 u 118
2017-06-16 07:40:21 C 12 21 35.97 +30 34 00.3 L T08
2017-06-16 07:52:01 C 12 21 36.17 +30 33 59.7 L T08
2017-06-16 08:03:02 C 12 21 36.33 +30 33 58.9 L T08
2017-06-16 08:14:53 C 12 21 36.52 +30 33 58.1 L T08
2017-06-17 04:58:21 C 12 21 59.74 +30 32 40.7 q 703
2017-06-17 05:06:05 C 12 21 59.86 +30 32 40.4 q 703
2017-06-17 05:13:53 C 12 22 00.01 +30 32 38.7 q 703
2017-06-17 05:21:38 C 12 22 00.12 +30 32 38.8 q 703
2017-06-18 21:38:32 C 12 22 50.57 +30 29 33.6 u 118
2017-06-18 22:04:28 C 12 22 51.13 +30 29 31.1 u 118
2017-06-18 22:34:06 C 12 22 51.77 +30 29 28.3 u 118
2017-06-19 21:42:41 C 12 23 23.99 +30 27 24.5 u 118
2017-06-19 22:01:12 C 12 23 24.42 +30 27 22.5 u 118
2017-06-19 22:27:08 C 12 23 25.03 +30 27 19.7 u 118
2017-06-20 02:46:39 C 12 23 31.42 +30 26 59.0 q H45
2017-06-20 02:48:19 C 12 23 31.47 +30 26 58.7 q H45
2017-06-20 02:49:26 C 12 23 31.48 +30 26 58.6 q H45