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
2017-07-12 04:18:53 C 12 45 31.52 +28 43 41.1 u H21
2017-07-12 04:20:57 C 12 45 31.61 +28 43 40.7 u H21
2017-07-12 04:22:59 C 12 45 31.74 +28 43 39.8 u H21
2017-07-12 04:25:02 C 12 45 31.83 +28 43 39.0 u H21
2017-07-12 04:27:05 C 12 45 31.98 +28 43 38.8 u H21
2017-07-12 04:29:08 C 12 45 32.08 +28 43 37.9 u H21
2017-07-12 04:30:58 C 12 45 32.17 +28 43 37.7 u H21
2017-07-12 07:01:27 C 12 45 40.85 +28 42 59.2 L T05
2017-07-12 07:13:53 C 12 45 41.55 +28 42 55.4 L T05
2017-07-12 07:25:53 C 12 45 42.20 +28 42 51.9 L T05
2017-07-12 07:38:04 C 12 45 42.88 +28 42 48.1 L T05
2017-07-16 07:03:47 C 12 51 23.99 +28 13 58.4 L T05
2017-07-16 07:16:27 C 12 51 24.74 +28 13 54.1 L T05
2017-07-16 07:28:49 C 12 51 25.48 +28 13 50.0 L T05
2017-07-16 07:41:06 C 12 51 26.23 +28 13 45.9 L T05
2017-07-18 07:00:17 C 12 54 25.43 +27 58 17.4 L T08
2017-07-18 07:12:24 C 12 54 26.19 +27 58 13.3 L T08
2017-07-18 07:24:45 C 12 54 26.96 +27 58 08.9 L T08
2017-07-18 07:36:53 C 12 54 27.72 +27 58 04.6 L T08
2017-07-26 01:00:55 C 13 07 08.76 +26 49 08.9 q I15
2017-07-26 01:04:13 C 13 07 08.99 +26 49 07.6 q I15
2017-07-26 01:07:31 C 13 07 09.21 +26 49 06.3 q I15
2017-07-26 07:08:30 C 13 07 35.21 +26 46 41.3 L T08
2017-07-26 07:20:35 C 13 07 36.06 +26 46 36.2 L T08
2017-07-26 07:32:46 C 13 07 36.93 +26 46 31.0 L T08
2017-07-26 07:45:23 C 13 07 37.82 +26 46 25.4 L T08
2017-07-28 07:10:49 C 13 11 06.90 +26 26 23.9 L T05
2017-07-28 07:23:24 C 13 11 07.80 +26 26 18.3 L T05
2017-07-28 07:35:32 C 13 11 08.68 +26 26 12.8 L T05
2017-07-28 07:48:03 C 13 11 09.60 +26 26 07.2 L T05
2017-07-30 07:05:47 C 13 14 42.99 +26 05 06.1 L T08
2017-07-30 07:17:54 C 13 14 43.89 +26 05 00.4 L T08
2017-07-30 07:30:00 C 13 14 44.78 +26 04 54.6 L T08
2017-07-30 07:40:40 C 13 14 45.59 +26 04 49.5 L T08
2017-07-30 20:55:02 C 13 15 46.22 +25 58 43.5 17.1 o Z22
2017-07-30 20:58:13 C 13 15 46.54 +25 58 41.9 17.8 o Z22
2017-07-30 20:59:59 C 13 15 46.68 +25 58 41.0 16.9 o Z22
2017-07-31 01:22:07 C 13 16 06.75 +25 56 36.9 q I15
2017-07-31 01:26:23 C 13 16 07.07 +25 56 34.8 q I15
2017-07-31 01:29:36 C 13 16 07.32 +25 56 33.3 q I15
2017-08-01 02:10:56 C 13 18 01.28 +25 44 55.2 q W33
2017-08-01 02:34:09 C 13 18 03.06 +25 44 43.6 q W33
2017-08-01 02:45:49 C 13 18 04.01 +25 44 36.7 q W19
2017-08-01 02:50:07 C 13 18 04.34 +25 44 34.5 q W19
2017-08-01 02:54:04 C 13 18 04.62 +25 44 32.4 q W19
2017-08-01 02:58:01 C 13 18 04.93 +25 44 30.4 q W19
2017-08-01 03:02:00 C 13 18 05.22 +25 44 28.7 q W19
2017-08-01 06:51:23 C 13 18 22.93 +25 42 43.6 L T05
2017-08-01 07:04:25 C 13 18 23.92 +25 42 36.9 L T05
2017-08-01 07:12:40 C 13 18 24.54 +25 42 32.9 L T05