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
2017-08-01 07:16:59 C 13 18 24.88 +25 42 30.7 L T05
2017-08-01 07:25:01 C 13 18 25.48 +25 42 26.8 L T05
2017-08-01 07:29:25 C 13 18 25.82 +25 42 24.6 L T05
2017-08-01 07:37:24 C 13 18 26.43 +25 42 20.5 L T05
2017-08-01 07:49:22 C 13 18 27.33 +25 42 14.4 L T05
2017-08-02 01:02:34 C 13 19 47.93 +25 33 49.5 q I15
2017-08-02 01:08:08 C 13 19 48.35 +25 33 46.1 q I15
2017-08-02 01:13:44 C 13 19 48.78 +25 33 43.9 q I15
2017-08-06 06:47:54 C 13 27 52.58 +24 40 45.6 L T05
2017-08-06 06:50:48 C 13 27 52.81 +24 40 44.1 L T05
2017-08-06 07:00:24 C 13 27 53.56 +24 40 38.5 L T05
2017-08-06 07:03:14 C 13 27 53.78 +24 40 36.9 L T05
2017-08-06 07:08:37 C 13 27 54.23 +24 40 33.7 L T05
2017-08-06 07:12:56 C 13 27 54.55 +24 40 31.2 L T05
2017-08-06 07:15:48 C 13 27 54.80 +24 40 29.5 L T05
2017-08-06 07:21:04 C 13 27 55.21 +24 40 26.5 L T05
2017-08-06 07:25:22 C 13 27 55.54 +24 40 23.9 L T05
2017-08-06 07:28:12 C 13 27 55.82 +24 40 22.3 L T05
2017-08-06 07:33:32 C 13 27 56.21 +24 40 19.2 L T05
2017-08-06 07:46:14 C 13 27 57.21 +24 40 11.8 L T05
2017-08-09 03:04:04 C 13 33 26.02 +24 01 03.8 u H21
2017-08-09 03:06:08 C 13 33 26.20 +24 01 02.6 u H21
2017-08-09 03:08:12 C 13 33 26.37 +24 01 01.4 u H21
2017-08-09 03:10:16 C 13 33 26.51 +24 01 00.0 u H21
2017-08-09 03:12:20 C 13 33 26.70 +24 00 58.9 u H21
2017-08-09 03:14:24 C 13 33 26.88 +24 00 57.5 u H21
2017-08-09 03:16:28 C 13 33 27.03 +24 00 56.1 u H21
2017-08-09 03:18:32 C 13 33 27.21 +24 00 54.9 u H21
2017-08-09 03:20:35 C 13 33 27.38 +24 00 53.6 u H21
2017-08-09 03:22:37 C 13 33 27.52 +24 00 52.5 u H21
2017-08-09 03:24:40 C 13 33 27.71 +24 00 50.9 u H21
2017-08-09 03:26:43 C 13 33 27.88 +24 00 49.6 u H21
2017-08-09 03:28:46 C 13 33 28.04 +24 00 48.5 u H21
2017-08-10 02:35:23 C 13 35 22.20 +23 46 33.8 u H21
2017-08-10 02:37:27 C 13 35 22.38 +23 46 32.3 u H21
2017-08-10 02:39:31 C 13 35 22.55 +23 46 31.0 u H21
2017-08-10 02:41:35 C 13 35 22.71 +23 46 29.8 u H21
2017-08-10 02:43:39 C 13 35 22.87 +23 46 28.4 u H21
2017-08-10 02:45:43 C 13 35 23.05 +23 46 26.9 u H21
2017-08-10 02:48:36 C 13 35 23.28 +23 46 25.1 u H21
2017-08-11 02:54:36 C 13 37 22.88 +23 31 02.4 P V78
2017-08-11 02:58:26 C 13 37 23.24 +23 30 59.9 P V78
2017-08-11 03:05:31 C 13 37 23.72 +23 30 54.7 P V78
2017-08-11 03:08:28 C 13 37 24.02 +23 30 53.2 P V78
2017-08-12 03:12:41 C 13 39 23.97 +23 14 58.4 P V78
2017-08-12 03:19:27 C 13 39 24.55 +23 14 54.4 P V78
2017-08-12 03:25:20 C 13 39 25.09 +23 14 49.0 P V78
2017-08-12 19:25:58 C 13 40 45.23 +23 03 57.8 U B38
2017-08-12 19:37:55 C 13 40 46.10 +23 03 49.9 U B38
2017-08-12 20:06:49 C 13 40 48.63 +23 03 30.9 U B38