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
2017-03-15 09:01:54 C 13 41 48.15 +06 00 44.4 u H21
2017-03-15 09:05:00 C 13 41 48.07 +06 00 47.1 u H21
2017-03-15 09:08:06 C 13 41 48.01 +06 00 49.7 u H21
2017-03-15 09:11:11 C 13 41 47.94 +06 00 52.3 u H21
2017-03-15 09:14:17 C 13 41 47.89 +06 00 55.0 u H21
2017-03-15 09:17:23 C 13 41 47.81 +06 00 57.7 u H21
2017-03-15 09:20:28 C 13 41 47.75 +06 01 00.5 u H21
2017-03-15 09:23:34 C 13 41 47.69 +06 01 03.1 u H21
2017-03-15 09:26:34 C 13 41 47.61 +06 01 05.7 u H21
2017-03-16 13:46:27 C 13 41 12.50 +06 25 50.6 L T05
2017-03-16 14:05:36 C 13 41 12.09 +06 26 07.9 L T05
2017-03-16 14:35:59 C 13 41 11.29 +06 26 34.7 L T05
2017-03-16 14:42:54 C 13 41 11.16 +06 26 40.9 L T05
2017-03-17 01:50:25 C 13 40 56.75 +06 36 30.3 q 160
2017-03-17 01:52:17 C 13 40 56.70 +06 36 32.0 q 160
2017-03-17 01:54:08 C 13 40 56.67 +06 36 33.2 q 160
2017-03-18 14:28:49 C 13 40 05.08 +07 09 36.5 L T08
2017-03-18 14:48:14 C 13 40 04.57 +07 09 53.9 L T08
2017-03-18 15:08:26 C 13 40 04.01 +07 10 12.1 L T08
2017-03-18 15:27:28 C 13 40 03.58 +07 10 29.4 L T08
2017-03-19 11:27:43 C 13 39 33.36 +07 28 54.4 q 703
2017-03-19 11:34:48 C 13 39 33.17 +07 29 01.1 q 703
2017-03-19 11:41:51 C 13 39 32.97 +07 29 07.5 q 703
2017-03-19 11:48:54 C 13 39 32.78 +07 29 14.1 q 703
2017-03-20 09:27:53 C 13 38 58.802 +07 49 29.41 L F51
2017-03-20 09:48:16 C 13 38 58.211 +07 49 48.70 L F51
2017-03-20 10:08:37 C 13 38 57.621 +07 50 07.89 L F51
2017-03-20 10:29:03 C 13 38 57.028 +07 50 27.19 L F51
2017-03-20 13:25:54 C 13 38 51.81 +07 53 13.8 L T05
2017-03-20 13:52:18 C 13 38 51.02 +07 53 38.9 L T05
2017-03-20 14:11:32 C 13 38 50.52 +07 53 57.0 L T05
2017-03-20 14:36:38 C 13 38 49.75 +07 54 20.7 L T05
2017-03-22 11:52:42 C 13 37 30.93 +08 37 42.2 q G96
2017-03-22 11:58:52 C 13 37 30.80 +08 37 49.4 q G96
2017-03-22 12:12:45 C 13 37 30.37 +08 38 03.4 q G96
2017-03-25 18:42:11 C 13 34 55.34 +09 56 00.0 q D29
2017-03-25 19:07:39 C 13 34 54.40 +09 56 25.7 q D29
2017-03-25 19:33:05 C 13 34 53.46 +09 56 51.5 q D29
2017-03-27 08:45:24 C 13 33 31.99 +10 34 55.8 q 703
2017-03-27 08:52:30 C 13 33 31.71 +10 35 03.2 q 703
2017-03-27 08:59:36 C 13 33 31.42 +10 35 10.4 q 703
2017-03-27 09:31:33 C 13 33 30.16 +10 35 43.3 q 703
2017-03-27 13:19:26 C 13 33 21.406 +10 39 40.12 L F51
2017-03-27 13:35:48 C 13 33 20.754 +10 39 56.97 L F51
2017-03-27 13:52:09 C 13 33 20.107 +10 40 13.83 L F51
2017-03-27 14:08:41 C 13 33 19.442 +10 40 30.88 L F51
2017-03-28 08:04:42 C 13 32 38.27 +10 59 06.2 q 703
2017-03-28 08:21:16 C 13 32 37.59 +10 59 23.4 q 703
2017-03-28 08:28:14 C 13 32 37.31 +10 59 30.7 q 703
2017-03-28 08:35:11 C 13 32 37.02 +10 59 37.8 q 703