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
1976-05-31 04:16:59 A 12 15 37.13 +29 17 01.8 17.2 675
1976-05-31 05:17:00 A 12 15 36.43 +29 17 10.3 675
1976-11-19 01:57:00 A 02 04 45.38 -40 38 54.3 809
1976-11-19 02:56:49 A 02 04 47.22 -40 37 29.8 809
1976-11-20 06:07:22 A 02 05 43.05 -39 59 27.6 809
1976-11-20 06:19:20 A 02 05 43.41 -39 59 09.9 809
1976-11-21 03:11:52 A 02 06 27.14 -39 30 25.9 809
1976-11-21 03:23:51 A 02 06 27.53 -39 30 09.8 809
1976-11-22 02:40:03 A 02 07 15.24 -38 58 26.3 809
1976-11-22 02:52:02 A 02 07 15.59 -38 58 10.7 809
1976-11-23 01:26:18 A 02 08 01.67 -38 27 47.5 809
1976-11-23 01:38:16 A 02 08 02.04 -38 27 31.7 809
1976-11-23 02:44:35 A 02 08 03.94 -38 26 01.1 805
1976-11-23 03:00:35 A 02 08 04.43 -38 25 39.3 805
1976-11-23 03:16:35 A 02 08 04.93 -38 25 15.7 805
1976-11-24 02:22:03 A 02 08 51.73 -37 54 36.2 809
1976-11-24 02:34:01 A 02 08 52.08 -37 54 20.7 809
1976-11-24 04:47:32 A 02 08 55.88 -37 51 20.4 805
1976-11-24 05:03:32 A 02 08 56.46 -37 51 00.9 805
1976-11-24 05:19:32 A 02 08 56.94 -37 50 39.6 805
1976-11-25 03:44:29 A 02 09 42.12 -37 21 13.9 805
1976-11-25 04:00:29 A 02 09 42.66 -37 20 52.7 805
1976-11-25 04:12:58 A 02 09 43.02 -37 20 36.9 809
1976-11-25 04:16:29 A 02 09 43.13 -37 20 31.4 805
1976-11-25 04:24:56 A 02 09 43.32 -37 20 21.6 809
1976-11-25 15:25:30 A 02 10 05.39 -37 06 00.5 323
1976-11-26 02:47:16 A 02 10 28.44 -36 51 17.7 809
1976-11-26 02:59:14 A 02 10 28.80 -36 51 02.9 809
1976-11-27 03:56:07 A 02 11 18.38 -36 19 00.3 809
1976-11-27 04:06:06 A 02 11 18.69 -36 18 47.1 809
1976-11-28 04:30:06 A 02 12 07.27 -35 47 46.8 809
1976-11-28 04:40:04 A 02 12 07.64 -35 47 34.4 809
1976-11-29 04:50:06 A 02 12 55.91 -35 17 12.7 809
1976-11-30 04:49:09 A 02 13 43.90 -34 47 25.2 809
1976-11-30 04:57:08 A 02 13 44.19 -34 47 14.7 809
1976-12-03 02:58:37 A 02 16 05.68 -33 21 54.7 809
1976-12-11 02:20:11 A 02 22 43.96 -29 40 33.8 809
1976-12-11 02:40:08 A 02 22 44.61 -29 40 11.9 809
1976-12-12 02:32:13 A 02 23 35.96 -29 13 41.5 809
1976-12-12 03:02:08 A 02 23 36.86 -29 13 09.4 809
1976-12-27 03:37:11 A 02 37 30.53 -22 58 55.3 18.6 695
1976-12-27 04:10:37 A 02 37 31.86 -22 58 22.9 695
1980-04-20 08:24:49 A 21 39 33.44 +14 20 54.4 A 801
1980-12-01 08:23:29 A 06 25 35.58 -15 11 44.2 19.5 675
1980-12-15 04:57:45 A 06 06 11.40 -15 13 45.1 A 801
1987-03-02 08:54:24 A 12 10 20.80 +02 27 30.6 B 691
1987-03-02 09:02:33 A 12 10 20.47 +02 27 34.9 B 691
1987-03-02 09:25:23 A 12 10 19.64 +02 27 47.0 B 691
1988-01-13 05:32:28 A 23 46 46.42 -18 05 06.7 568
1991-03-13 08:02:10 A 14 46 07.40 +04 38 58.6 801