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
2017-04-20 23:44:54 C 13 02 44.94 +21 04 05.8 q 160
2017-04-20 23:46:52 C 13 02 44.82 +21 04 07.6 q 160
2017-04-21 08:42:00 C 13 02 11.96 +21 12 56.8 q G96
2017-04-21 08:48:25 C 13 02 11.57 +21 13 03.4 q G96
2017-04-21 08:54:14 C 13 02 11.19 +21 13 08.8 q G96
2017-04-21 09:00:40 C 13 02 10.78 +21 13 15.1 q G96
2017-04-21 15:02:52 C 13 01 48.96 +21 19 10.9 q D29
2017-04-21 15:23:11 C 13 01 47.66 +21 19 30.9 q D29
2017-04-21 20:40:21 C 13 01 28.53 +21 24 39.2 q 006
2017-04-21 20:48:03 C 13 01 28.08 +21 24 46.6 q 006
2017-04-21 20:55:45 C 13 01 27.59 +21 24 54.1 q 006
2017-04-21 21:03:28 C 13 01 27.14 +21 25 01.8 q 006
2017-04-22 06:04:58 C 13 00 53.72 +21 33 50.1 q 703
2017-04-22 06:12:51 C 13 00 53.22 +21 33 57.9 q 703
2017-04-22 06:20:42 C 13 00 52.73 +21 34 05.7 q 703
2017-04-22 06:28:29 C 13 00 52.23 +21 34 13.1 q 703
2017-04-22 21:35:13 C 12 59 56.82 +21 48 45.5 q 006
2017-04-22 21:42:55 C 12 59 56.35 +21 48 52.8 q 006
2017-04-22 21:50:37 C 12 59 55.86 +21 49 00.3 q 006
2017-04-22 21:58:19 C 12 59 55.37 +21 49 08.3 q 006
2017-04-26 12:46:37 C 12 54 36.49 +23 09 33.6 L T05
2017-04-26 13:08:07 C 12 54 35.16 +23 09 52.7 L T05
2017-04-26 13:29:25 C 12 54 33.87 +23 10 11.3 L T05
2017-04-26 13:50:40 C 12 54 32.54 +23 10 29.8 L T05
2017-04-27 00:58:07 C 12 53 53.07 +23 20 21.2 q W34
2017-04-27 01:10:40 C 12 53 52.29 +23 20 32.5 q W34
2017-04-27 01:26:16 C 12 53 51.33 +23 20 46.3 q W34
2017-04-27 01:41:08 C 12 53 50.40 +23 20 59.6 q W34
2017-04-27 06:04:25 C 12 53 34.15 +23 24 52.0 q 703
2017-04-27 06:12:53 C 12 53 33.59 +23 24 59.6 q 703
2017-04-27 06:21:21 C 12 53 33.08 +23 25 07.0 q 703
2017-04-27 06:29:46 C 12 53 32.56 +23 25 14.3 q 703
2017-04-28 21:52:42 C 12 51 10.65 +23 59 06.3 Q 160
2017-04-28 21:54:43 C 12 51 10.55 +23 59 09.1 Q 160
2017-04-28 21:56:43 C 12 51 10.42 +23 59 10.1 Q 160
2017-04-29 22:08:04 C 12 49 44.17 +24 19 19.1 U 160
2017-04-29 22:10:05 C 12 49 44.06 +24 19 21.0 U 160
2017-04-29 22:12:04 C 12 49 43.93 +24 19 22.6 U 160
2017-04-30 07:08:05 C 12 49 12.19 +24 26 42.9 q 703
2017-04-30 07:15:49 C 12 49 11.72 +24 26 49.1 q 703
2017-04-30 07:23:31 C 12 49 11.25 +24 26 55.3 q 703
2017-04-30 07:31:12 C 12 49 10.79 +24 27 01.5 q 703
2017-05-02 22:46:20 C 12 45 31.35 +25 16 39.6 q J27
2017-05-02 22:56:26 C 12 45 30.76 +25 16 47.3 q J27
2017-05-02 23:08:08 C 12 45 30.06 +25 16 56.2 q J27
2017-05-03 04:02:40 C 12 45 13.68 +25 20 39.0 q G96
2017-05-03 04:08:54 C 12 45 13.32 +25 20 43.8 q G96
2017-05-03 04:15:00 C 12 45 12.96 +25 20 48.7 q G96
2017-05-03 04:21:06 C 12 45 12.59 +25 20 53.1 q G96
2017-05-05 06:09:52 C 12 42 25.82 +25 57 04.4 q H45