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
2021-04-19 14:46:53 C 21 26 16.88 +14 15 16.3 V T05
2021-04-23 10:42:06 C 21 48 25.36 +15 16 19.5 V 703
2021-04-23 10:49:06 C 21 48 27.05 +15 16 24.1 V 703
2021-04-23 10:56:05 C 21 48 28.74 +15 16 28.1 V 703
2021-04-23 11:03:05 C 21 48 30.41 +15 16 32.8 V 703
2021-04-23 13:57:11 C 21 49 12.52 +15 18 22.1 V T05
2021-04-23 14:01:48 C 21 49 13.60 +15 18 25.0 V T05
2021-04-23 14:13:45 C 21 49 16.48 +15 18 32.5 V T05
2021-04-23 14:36:42 C 21 49 21.98 +15 18 46.9 V T05
2021-04-30 10:43:44 C 22 28 58.95 +16 45 22.5 V 703
2021-04-30 10:51:45 C 22 29 00.89 +16 45 25.6 V 703
2021-04-30 10:59:45 C 22 29 02.79 +16 45 29.8 V 703
2021-04-30 11:07:46 C 22 29 04.75 +16 45 33.1 V 703
2021-05-01 11:15:55 C 22 34 52.72 +16 55 46.7 V 703
2021-05-01 11:21:18 C 22 34 54.01 +16 55 49.0 V 703
2021-05-01 11:26:42 C 22 34 55.29 +16 55 51.2 V 703
2021-05-01 11:32:06 C 22 34 56.69 +16 55 52.7 V 703
2021-05-06 11:13:17 C 23 03 29.88 +17 37 09.8 V 703
2021-05-06 11:16:28 C 23 03 30.62 +17 37 10.7 V 703
2021-05-06 11:19:39 C 23 03 31.40 +17 37 11.8 V 703
2021-05-06 11:22:49 C 23 03 32.13 +17 37 12.4 V 703
2021-05-07 10:28:43 C 23 08 59.69 +17 43 21.2 U V11
2021-05-07 10:48:20 C 23 09 04.27 +17 43 27.3 U V11
2021-05-07 11:07:33 C 23 09 08.73 +17 43 33.2 U V11
2021-05-09 14:16:05 C 23 21 09.43 +17 55 12.4 V T05
2021-05-09 14:23:48 C 23 21 11.21 +17 55 14.0 V T05
2021-05-09 14:44:23 C 23 21 16.04 +17 55 18.4 V T05
2021-05-09 14:53:41 C 23 21 18.16 +17 55 20.4 V T05
2021-05-17 14:02:17 C 00 05 06.72 +18 15 57.9 V T05
2021-05-17 14:16:53 C 00 05 10.00 +18 15 58.4 V T05
2021-05-17 14:30:51 C 00 05 13.07 +18 15 58.8 V T05
2021-05-19 14:14:11 C 00 15 51.26 +18 16 03.7 V T08
2021-05-19 14:20:09 C 00 15 52.58 +18 16 03.6 V T08
2021-05-19 14:30:56 C 00 15 54.95 +18 16 03.8 V T08
2021-05-19 14:49:37 C 00 15 59.08 +18 16 03.6 V T08
2021-05-22 11:19:39 C 00 31 01.17 +18 13 02.4 U I41
2021-05-22 11:21:41 C 00 31 01.61 +18 13 02.4 U I41
2021-05-22 11:23:45 C 00 31 02.05 +18 13 02.3 U I41
2021-05-22 11:25:47 C 00 31 02.49 +18 13 02.1 U I41
2021-05-22 11:27:49 C 00 31 02.93 +18 13 01.9 U I41
2021-05-23 11:19:45 C 00 36 13.31 +18 11 12.3 U I41
2021-05-23 11:21:46 C 00 36 13.75 +18 11 12.1 U I41
2021-05-23 11:23:49 C 00 36 14.19 +18 11 12.0 U I41
2021-05-23 11:25:52 C 00 36 14.63 +18 11 11.9 U I41
2021-05-23 11:27:54 C 00 36 15.06 +18 11 11.7 U I41
2021-08-26 14:07:11 C 06 00 09.79 +03 30 51.5 V T08
2021-08-26 14:13:09 C 06 00 10.25 +03 30 48.2 V T08
2021-08-26 14:24:34 C 06 00 11.10 +03 30 42.0 V T08
2021-08-26 14:50:46 C 06 00 13.01 +03 30 28.1 V T08
2021-08-28 14:30:06 C 06 03 42.91 +03 04 43.0 V T05