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
2021-02-15 15:03:22 C 16 41 33.47 -03 57 55.2 V T08
2021-02-15 15:08:01 C 16 41 34.07 -03 57 53.9 V T08
2021-02-15 15:32:03 C 16 41 37.21 -03 57 45.4 V T08
2021-02-15 15:40:09 C 16 41 38.25 -03 57 42.4 V T08
2021-02-17 15:03:46 C 16 47 56.78 -03 40 38.2 V T05
2021-02-17 15:09:04 C 16 47 57.49 -03 40 35.9 V T05
2021-02-17 15:51:26 C 16 48 03.12 -03 40 20.1 V T05
2021-02-23 13:55:31 C 17 07 47.68 -02 40 53.5 V T08
2021-02-23 14:00:50 C 17 07 48.42 -02 40 51.2 V T08
2021-02-23 14:06:52 C 17 07 49.30 -02 40 48.1 V T08
2021-02-23 14:09:32 C 17 07 49.64 -02 40 47.1 V T08
2021-02-23 14:12:11 C 17 07 50.04 -02 40 45.8 V T08
2021-02-23 14:23:29 C 17 07 51.65 -02 40 40.5 V T08
2021-02-23 14:24:09 C 17 07 51.74 -02 40 40.3 V T08
2021-02-23 14:38:04 C 17 07 53.73 -02 40 33.8 V T08
2021-02-25 14:42:27 C 17 14 52.59 -02 17 33.1 V T05
2021-02-25 14:47:44 C 17 14 53.31 -02 17 30.3 V T05
2021-02-25 14:58:57 C 17 14 54.99 -02 17 24.8 V T05
2021-02-25 15:22:47 C 17 14 58.46 -02 17 13.2 V T05
2021-03-03 14:09:41 C 17 36 41.36 -00 59 50.9 V T08
2021-03-03 14:19:28 C 17 36 42.87 -00 59 45.0 V T08
2021-03-03 14:24:07 C 17 36 43.60 -00 59 42.3 V T08
2021-03-03 14:38:04 C 17 36 45.78 -00 59 34.2 V T08
2021-03-07 15:14:21 C 17 52 20.19 +00 00 32.6 V T08
2021-03-07 15:20:25 C 17 52 21.18 +00 00 36.4 V T08
2021-03-07 15:27:43 C 17 52 22.38 +00 00 41.2 V T08
2021-03-07 15:47:27 C 17 52 25.60 +00 00 54.3 V T08
2021-03-15 14:16:11 C 18 25 23.26 +02 17 25.4 V T08
2021-03-15 14:20:52 C 18 25 24.09 +02 17 29.1 V T08
2021-03-15 14:32:15 C 18 25 26.14 +02 17 37.9 V T08
2021-04-05 14:59:42 C 20 07 55.65 +09 38 03.5 V T08
2021-04-05 15:05:42 C 20 07 56.98 +09 38 09.0 V T08
2021-04-05 15:23:06 C 20 08 00.84 +09 38 24.7 V T08
2021-04-10 13:57:22 C 20 35 01.942 +11 23 21.28 U F52
2021-04-10 14:12:11 C 20 35 05.351 +11 23 34.12 U F52
2021-04-10 14:41:46 C 20 35 12.145 +11 23 59.82 U F52
2021-04-15 14:26:55 C 21 03 17.10 +13 03 03.9 V T05
2021-04-15 14:30:17 C 21 03 17.89 +13 03 06.5 V T05
2021-04-15 14:50:27 C 21 03 22.64 +13 03 22.7 V T05
2021-04-15 14:51:46 C 21 03 22.95 +13 03 23.7 V T05
2021-04-15 14:58:24 C 21 03 24.50 +13 03 28.9 V T05
2021-04-15 15:08:58 C 21 03 27.00 +13 03 37.4 V T05
2021-04-15 15:16:13 C 21 03 28.70 +13 03 43.1 V T05
2021-04-18 10:52:39 C 21 19 35.55 +13 55 07.1 V 703
2021-04-18 11:00:19 C 21 19 37.32 +13 55 12.1 V 703
2021-04-18 11:07:58 C 21 19 39.21 +13 55 18.2 V 703
2021-04-18 11:15:37 C 21 19 41.01 +13 55 24.0 V 703
2021-04-19 14:02:29 C 21 26 06.30 +14 14 44.4 V T05
2021-04-19 14:07:06 C 21 26 07.40 +14 14 47.7 V T05
2021-04-19 14:17:05 C 21 26 09.78 +14 14 55.0 V T05