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
2017-05-26 04:19:51 C 12 22 27.23 +29 52 02.7 q H45
2017-05-26 20:50:04 C 12 22 06.38 +29 56 01.6 q 160
2017-05-26 20:53:00 C 12 22 06.31 +29 56 02.3 q 160
2017-05-26 20:55:57 C 12 22 06.24 +29 56 03.0 q 160
2017-05-26 22:54:35 C 12 22 03.58 +29 56 29.4 u 118
2017-05-26 23:25:15 C 12 22 02.98 +29 56 37.1 15.9 d B66
2017-05-26 23:31:37 C 12 22 02.79 +29 56 37.6 u 118
2017-05-27 00:08:40 C 12 22 02.02 +29 56 45.8 u 118
2017-05-27 00:50:44 C 12 22 01.19 +29 56 55.8 15.5 d B66
2017-05-27 06:49:34 C 12 21 54.43 +29 58 24.9 L T08
2017-05-27 07:10:15 C 12 21 53.95 +29 58 29.6 L T08
2017-05-27 07:31:32 C 12 21 53.49 +29 58 34.1 L T08
2017-05-27 07:52:16 C 12 21 53.02 +29 58 38.8 L T08
2017-05-27 20:30:26 C 12 21 38.60 +30 01 24.0 q 160
2017-05-27 20:33:30 C 12 21 38.52 +30 01 24.7 q 160
2017-05-27 20:36:33 C 12 21 38.43 +30 01 25.2 q 160
2017-05-27 22:17:40 C 12 21 36.38 +30 01 45.9 u 118
2017-05-27 23:13:13 C 12 21 35.29 +30 01 57.3 u 118
2017-05-27 23:42:50 C 12 21 34.73 +30 02 03.3 u 118
2017-05-28 00:01:14 C 12 21 34.50 +30 02 07.2 q Z80
2017-05-28 00:02:58 C 12 21 34.45 +30 02 07.7 q Z80
2017-05-28 00:04:43 C 12 21 34.40 +30 02 08.3 q Z80
2017-05-28 00:06:27 C 12 21 34.39 +30 02 08.7 q Z80
2017-05-28 00:08:12 C 12 21 34.32 +30 02 08.8 q Z80
2017-05-28 00:09:57 C 12 21 34.30 +30 02 09.2 q Z80
2017-05-28 00:11:42 C 12 21 34.27 +30 02 09.1 q Z80
2017-05-28 00:13:26 C 12 21 34.22 +30 02 10.1 q Z80
2017-05-28 00:15:11 C 12 21 34.22 +30 02 10.4 q Z80
2017-05-28 05:52:11 C 12 21 28.14 +30 03 26.0 o 691
2017-05-28 06:13:49 C 12 21 27.72 +30 03 30.2 o 691
2017-05-28 06:35:29 C 12 21 27.28 +30 03 34.6 o 691
2017-05-28 07:22:34 12 21 26.39 +30 03 43.4 V04
2017-05-28 07:24:28 12 21 26.37 +30 03 43.5 V04
2017-05-28 07:25:57 12 21 26.34 +30 03 43.8 V04
2017-05-28 07:27:18 12 21 26.32 +30 03 44.0 V04
2017-05-28 08:12:27 C 12 21 25.69 +30 03 57.4 L T05
2017-05-28 08:27:15 C 12 21 25.39 +30 04 00.4 L T05
2017-05-28 08:55:28 C 12 21 24.83 +30 04 06.0 L T05
2017-05-28 08:59:51 C 12 21 24.75 +30 04 06.9 L T05
2017-05-28 22:25:47 C 12 21 10.99 +30 06 46.5 u 118
2017-05-28 23:06:32 C 12 21 10.29 +30 06 54.1 u 118
2017-05-28 23:54:41 C 12 21 09.46 +30 07 03.0 u 118
2017-05-29 03:51:52 12 21 06.01 +30 07 53.7 V04
2017-05-29 03:53:14 12 21 05.99 +30 07 54.1 V04
2017-05-29 04:13:29 12 21 05.61 +30 07 58.0 V04
2017-05-29 04:14:45 12 21 05.59 +30 07 58.3 V04
2017-05-30 06:23:35 C 12 20 42.14 +30 12 51.7 L T08
2017-05-30 06:45:11 C 12 20 41.78 +30 12 55.4 L T08
2017-05-30 07:05:48 C 12 20 41.44 +30 12 59.0 L T08
2017-05-30 07:27:02 C 12 20 41.08 +30 13 02.6 L T08