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
2017-05-14 08:41:49 C 12 31 42.72 +28 07 50.9 L T08
2017-05-14 09:00:49 C 12 31 41.87 +28 08 00.2 L T08
2017-05-14 21:21:51 C 12 31 10.75 +28 13 57.0 q Z80
2017-05-14 21:24:10 C 12 31 10.63 +28 13 58.2 q Z80
2017-05-14 21:26:09 C 12 31 10.56 +28 13 59.7 q Z80
2017-05-14 21:28:17 C 12 31 10.52 +28 14 00.0 q Z80
2017-05-14 21:30:26 C 12 31 10.36 +28 14 01.1 q Z80
2017-05-14 21:32:35 C 12 31 10.29 +28 14 02.4 q Z80
2017-05-14 21:34:44 C 12 31 10.19 +28 14 04.2 q Z80
2017-05-14 21:36:46 C 12 31 10.10 +28 14 04.8 q Z80
2017-05-14 21:39:02 C 12 31 09.98 +28 14 05.5 q Z80
2017-05-15 04:53:21 C 12 30 51.74 +28 17 35.4 q H45
2017-05-15 04:54:49 C 12 30 51.68 +28 17 36.1 q H45
2017-05-15 04:56:36 C 12 30 51.61 +28 17 36.8 q H45
2017-05-15 04:57:51 C 12 30 51.56 +28 17 37.5 q H45
2017-05-15 04:58:53 C 12 30 51.51 +28 17 38.0 q H45
2017-05-15 04:59:57 C 12 30 51.47 +28 17 38.5 q H45
2017-05-15 22:36:44 C 12 30 08.28 +28 25 50.2 u 118
2017-05-15 23:43:55 C 12 30 05.50 +28 26 20.3 u 118
2017-05-16 00:35:07 C 12 30 03.41 +28 26 43.1 u 118
2017-05-16 00:54:19 C 12 30 02.64 +28 26 51.7 u 118
2017-05-16 04:52:46 C 12 29 53.53 +28 28 44.5 q 703
2017-05-16 05:00:36 C 12 29 53.20 +28 28 47.9 q 703
2017-05-16 05:08:23 C 12 29 52.86 +28 28 51.3 q 703
2017-05-16 05:16:06 C 12 29 52.54 +28 28 54.9 q 703
2017-05-16 21:30:23 C 12 29 14.34 +28 36 06.4 q 160
2017-05-16 21:32:27 C 12 29 14.25 +28 36 07.3 q 160
2017-05-16 21:34:22 C 12 29 14.18 +28 36 08.1 q 160
2017-05-16 23:34:03 C 12 29 09.30 +28 36 59.3 u 118
2017-05-17 00:18:51 C 12 29 07.57 +28 37 18.4 u 118
2017-05-17 00:47:38 C 12 29 06.42 +28 37 30.5 u 118
2017-05-17 20:46:15 C 12 28 21.62 +28 46 03.1 q 160
2017-05-17 20:48:12 C 12 28 21.54 +28 46 04.1 q 160
2017-05-17 20:50:07 C 12 28 21.47 +28 46 04.8 q 160
2017-05-17 23:17:47 C 12 28 15.69 +28 47 04.9 u 118
2017-05-17 23:51:04 C 12 28 14.44 +28 47 18.3 u 118
2017-05-18 00:32:39 C 12 28 12.89 +28 47 34.9 u 118
2017-05-18 03:11:42 C 12 28 07.39 +28 48 43.6 q W33
2017-05-18 03:43:38 C 12 28 06.17 +28 48 57.2 q W33
2017-05-18 03:59:36 C 12 28 05.61 +28 49 03.7 q W33
2017-05-19 00:08:41 C 12 27 22.08 +28 57 05.6 u 118
2017-05-19 00:38:19 C 12 27 21.02 +28 57 16.8 u 118
2017-05-20 05:40:54 C 12 26 22.13 +29 08 21.3 q 703
2017-05-20 05:48:38 C 12 26 21.85 +29 08 24.3 q 703
2017-05-20 05:56:22 C 12 26 21.59 +29 08 26.8 q 703
2017-05-20 06:04:03 C 12 26 21.30 +29 08 29.6 q 703
2017-05-20 08:33:33 C 12 26 16.45 +29 09 26.4 L T05
2017-05-20 08:35:06 C 12 26 16.36 +29 09 26.9 L T05
2017-05-20 08:51:00 C 12 26 15.83 +29 09 32.4 L T05
2017-05-20 08:52:31 C 12 26 15.78 +29 09 33.1 L T05