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
2016-02-15 06:41:39 C 09 36 18.07 -00 00 48.9 q 703
2016-03-30 05:45:00 C 09 06 03.559 +05 23 22.84 L F51
2016-03-30 06:01:22 C 09 06 03.314 +05 23 27.27 L F51
2016-03-30 06:17:46 C 09 06 03.057 +05 23 31.73 L F51
2016-03-30 06:34:11 C 09 06 02.802 +05 23 36.31 L F51
2016-04-09 05:48:06 C 09 03 30.155 +06 24 33.45 L F51
2016-04-09 06:33:04 C 09 03 29.831 +06 24 43.84 L F51
2016-04-21 07:08:11 C 09 02 57.224 +07 25 21.92 L F51
2016-04-21 07:26:33 C 09 02 57.254 +07 25 25.41 L F51
2016-04-21 08:03:49 C 09 02 57.323 +07 25 32.23 L F51
2017-01-09 11:11:24 C 13 17 17.84 -03 53 10.7 q G96
2017-01-09 11:17:44 C 13 17 18.11 -03 53 09.9 q G96
2017-01-09 11:23:59 C 13 17 18.30 -03 53 10.0 q G96
2017-01-09 11:30:11 C 13 17 18.56 -03 53 10.6 q G96
2017-01-28 11:40:13 C 13 32 55.97 -03 06 35.4 q G96
2017-01-28 11:46:28 C 13 32 56.14 -03 06 34.2 q G96
2017-01-28 12:00:41 C 13 32 56.53 -03 06 31.3 q G96
2017-01-28 12:06:55 C 13 32 56.73 -03 06 30.1 q G96
2017-01-30 14:02:45 C 13 34 21.733 -02 56 31.84 L F51
2017-01-30 14:20:10 C 13 34 22.196 -02 56 28.16 L F51
2017-01-30 14:37:36 C 13 34 22.660 -02 56 24.47 L F51
2017-01-30 14:54:59 C 13 34 23.119 -02 56 20.83 L F51
2017-01-31 11:20:54 C 13 34 56.69 -02 51 58.4 q 703
2017-01-31 11:28:43 C 13 34 56.89 -02 51 55.7 q 703
2017-01-31 11:36:39 C 13 34 57.09 -02 51 53.6 q 703
2017-01-31 11:44:52 C 13 34 57.37 -02 51 51.3 q 703
2017-02-15 04:16:45 C 13 42 30.45 -01 03 23.2 q 160
2017-02-15 04:19:40 C 13 42 30.57 -01 03 20.5 q 160
2017-02-19 03:41:03 C 13 43 46.25 -00 22 08.5 q 160
2017-02-19 03:44:01 C 13 43 46.29 -00 22 06.8 q 160
2017-02-19 03:46:59 C 13 43 46.36 -00 22 05.6 q 160
2017-02-22 14:29:30 C 13 44 32.848 +00 18 15.99 L F51
2017-02-22 14:44:38 C 13 44 32.940 +00 18 23.76 L F51
2017-02-24 09:02:53 C 13 44 49.58 +00 40 44.3 q 703
2017-02-24 09:12:49 C 13 44 49.63 +00 40 49.4 q 703
2017-02-24 09:22:43 C 13 44 49.69 +00 40 55.4 q 703
2017-02-24 09:32:36 C 13 44 49.70 +00 41 00.3 q 703
2017-02-24 10:07:34 C 13 44 49.88 +00 41 19.6 q G96
2017-02-24 10:19:42 C 13 44 49.93 +00 41 25.2 q G96
2017-02-24 10:25:51 C 13 44 49.95 +00 41 29.4 q G96
2017-02-24 10:32:01 C 13 44 50.00 +00 41 32.4 q G96
2017-03-01 10:12:47 C 13 45 07.42 +01 51 29.2 R G45
2017-03-01 10:19:35 C 13 45 07.41 +01 51 33.2 R G45
2017-03-01 10:27:04 C 13 45 07.39 +01 51 38.0 R G45
2017-03-01 10:35:13 C 13 45 07.37 +01 51 43.2 R G45
2017-03-01 10:43:03 C 13 45 07.35 +01 51 48.0 R G45
2017-03-02 10:04:29 C 13 45 05.80 +02 06 39.3 q 703
2017-03-02 10:11:40 C 13 45 05.80 +02 06 42.2 q 703
2017-03-02 10:18:52 C 13 45 05.79 +02 06 44.5 q 703
2017-03-03 06:42:24 C 13 45 02.91 +02 20 01.3 R G45