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
2017-11-24 08:45:18 C 02 08 28.47 -38 07 04.6 U T05
2017-12-04 07:55:56 C 02 16 13.82 -33 11 25.2 U T08
2017-12-04 08:08:48 C 02 16 14.19 -33 11 09.7 U T08
2017-12-04 08:18:42 C 02 16 14.47 -33 10 58.2 U T08
2017-12-04 08:21:59 C 02 16 14.56 -33 10 54.6 U T08
2017-12-08 08:26:47 C 02 19 28.42 -31 19 44.4 U T08
2017-12-08 08:34:02 C 02 19 28.64 -31 19 36.1 U T08
2017-12-08 08:43:55 C 02 19 28.94 -31 19 24.9 U T08
2017-12-08 08:45:15 C 02 19 28.99 -31 19 23.3 U T08
2017-12-10 08:19:52 C 02 21 07.36 -30 25 45.3 U T05
2017-12-10 08:29:47 C 02 21 07.68 -30 25 34.1 U T05
2017-12-10 08:39:43 C 02 21 08.00 -30 25 22.9 U T05
2017-12-10 08:49:37 C 02 21 08.31 -30 25 11.7 U T05
2017-12-12 08:14:57 C 02 22 48.11 -29 32 36.6 U T08
2017-12-12 08:24:50 C 02 22 48.45 -29 32 25.7 U T08
2017-12-12 08:34:46 C 02 22 48.78 -29 32 15.0 U T08
2017-12-12 08:44:40 C 02 22 49.09 -29 32 03.8 U T08
2017-12-16 08:03:19 C 02 26 15.48 -27 48 55.9 U T08
2017-12-16 08:13:13 C 02 26 15.82 -27 48 45.3 U T08
2017-12-16 08:19:50 C 02 26 16.04 -27 48 38.4 U T08
2017-12-16 08:38:57 C 02 26 16.69 -27 48 17.9 U T08
2017-12-23 04:45:07 C 02 32 31.83 -24 58 22.5 U 703
2017-12-23 04:52:41 C 02 32 32.10 -24 58 13.9 U 703
2017-12-23 05:00:16 C 02 32 32.38 -24 58 06.3 U 703
2017-12-23 05:07:50 C 02 32 32.70 -24 57 57.4 U 703
2017-12-23 06:22:10 C 02 32 35.838 -24 56 42.59 U F51
2017-12-23 06:36:42 C 02 32 36.374 -24 56 28.02 U F51
2017-12-23 06:51:12 C 02 32 36.915 -24 56 13.45 U F51
2017-12-23 07:05:43 C 02 32 37.453 -24 55 58.83 U F51
2017-12-26 05:08:38 C 02 35 25.39 -23 46 19.9 o 691
2017-12-26 05:38:55 C 02 35 26.58 -23 45 50.0 o 691
2017-12-26 06:09:09 C 02 35 27.74 -23 45 20.3 o 691
2018-01-03 07:03:27 C 02 43 34.51 -20 42 08.1 U T05
2018-01-03 07:13:41 C 02 43 34.95 -20 41 58.7 U T05
2018-01-03 07:23:51 C 02 43 35.36 -20 41 49.7 U T05
2018-01-03 07:33:45 C 02 43 35.77 -20 41 40.3 U T05
2018-01-03 19:30:29 S 02 44 07.126 -20 30 39.06 L C51
2018-01-03 19:30:40 S 02 44 07.138 -20 30 39.71 L C51
2018-01-03 22:39:10 S 02 44 15.382 -20 27 47.41 L C51
2018-01-04 01:47:40 S 02 44 23.614 -20 24 54.90 L C51
2018-01-04 04:56:10 S 02 44 31.831 -20 22 03.97 L C51
2018-01-04 08:04:40 S 02 44 40.111 -20 19 12.14 L C51
2018-01-04 09:38:55 S 02 44 44.230 -20 17 47.15 L C51
2018-01-04 11:13:10 S 02 44 48.379 -20 16 21.22 L C51
2018-01-04 12:47:25 S 02 44 52.481 -20 14 56.26 L C51
2018-01-04 14:21:40 S 02 44 56.693 -20 13 30.76 L C51
2018-01-04 15:55:55 S 02 45 00.778 -20 12 04.72 L C51
2018-01-04 17:30:10 S 02 45 04.879 -20 10 38.75 L C51
2018-01-04 17:30:21 S 02 45 04.886 -20 10 39.22 L C51
2018-01-04 19:04:36 S 02 45 09.086 -20 09 13.46 L C51