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
2017-06-20 02:50:57 C 12 23 31.51 +30 26 58.5 q H45
2017-06-20 02:52:12 C 12 23 31.54 +30 26 58.3 q H45
2017-06-20 02:53:41 C 12 23 31.57 +30 26 58.2 q H45
2017-06-20 06:55:52 C 12 23 37.48 +30 26 37.0 L T08
2017-06-20 07:08:07 C 12 23 37.74 +30 26 35.8 L T08
2017-06-20 07:20:32 C 12 23 38.02 +30 26 34.3 L T08
2017-06-20 07:32:37 C 12 23 38.31 +30 26 32.9 L T08
2017-06-20 20:00:21 C 12 23 57.24 +30 25 13.7 q 160
2017-06-20 20:02:25 C 12 23 57.29 +30 25 13.5 q 160
2017-06-20 20:04:30 C 12 23 57.35 +30 25 13.4 q 160
2017-06-20 21:42:15 C 12 23 59.76 +30 25 01.2 u 118
2017-06-20 21:57:04 C 12 24 00.13 +30 24 59.4 u 118
2017-06-22 07:03:12 C 12 24 53.53 +30 21 23.5 L T05
2017-06-22 07:15:10 C 12 24 53.83 +30 21 22.0 L T05
2017-06-22 07:27:35 C 12 24 54.14 +30 21 20.3 L T05
2017-06-22 07:35:00 C 12 24 54.34 +30 21 19.4 L T05
2017-06-22 07:39:51 C 12 24 54.47 +30 21 18.8 L T05
2017-06-22 07:46:24 C 12 24 54.64 +30 21 17.9 L T05
2017-06-22 07:54:53 C 12 24 54.86 +30 21 16.8 L T05
2017-06-22 08:07:48 C 12 24 55.20 +30 21 15.2 L T05
2017-06-26 20:48:25 C 12 28 22.90 +30 05 56.1 u 118
2017-06-26 21:29:32 C 12 28 24.33 +30 05 49.2 u 118
2017-06-26 21:55:43 C 12 28 25.23 +30 05 44.7 u 118
2017-06-28 06:43:13 C 12 29 37.24 +30 00 22.7 L T08
2017-06-28 06:53:43 C 12 29 37.63 +30 00 20.3 L T08
2017-06-28 07:06:16 C 12 29 38.07 +30 00 18.1 L T08
2017-06-28 07:18:53 C 12 29 38.51 +30 00 15.7 L T08
2017-06-28 07:19:36 C 12 29 38.54 +30 00 15.6 L T08
2017-06-28 07:31:57 C 12 29 39.00 +30 00 13.3 L T08
2017-06-28 07:44:11 C 12 29 39.42 +30 00 11.1 L T08
2017-06-28 07:56:34 C 12 29 39.88 +30 00 08.7 L T08
2017-07-02 03:47:48 C 12 33 24.11 +29 42 42.6 q G96
2017-07-02 03:53:52 C 12 33 24.36 +29 42 41.3 q G96
2017-07-02 03:59:55 C 12 33 24.61 +29 42 39.9 q G96
2017-07-02 04:05:58 C 12 33 24.87 +29 42 38.6 q G96
2017-07-02 06:44:33 C 12 33 31.77 +29 42 08.3 L T08
2017-07-02 07:07:37 C 12 33 32.72 +29 42 03.1 L T08
2017-07-02 07:19:46 C 12 33 33.23 +29 42 00.5 L T08
2017-07-02 07:32:11 C 12 33 33.75 +29 41 57.6 L T08
2017-07-02 19:04:01 C 12 34 04.41 +29 39 30.6 o 071
2017-07-02 19:10:41 C 12 34 04.70 +29 39 29.1 o 071
2017-07-02 19:13:40 C 12 34 04.82 +29 39 28.4 o 071
2017-07-02 19:17:43 C 12 34 04.93 +29 39 27.5 o 071
2017-07-02 19:20:58 C 12 34 05.13 +29 39 26.8 o 071
2017-07-02 19:23:51 C 12 34 05.29 +29 39 26.2 o 071
2017-07-02 19:27:42 C 12 34 05.42 +29 39 25.6 o 071
2017-07-02 19:31:42 C 12 34 05.62 +29 39 24.2 o 071
2017-07-02 19:35:35 C 12 34 05.69 +29 39 23.0 o 071
2017-07-07 02:14:20 C 12 38 58.12 +29 16 01.2 u H21
2017-07-07 02:16:24 C 12 38 58.22 +29 16 00.7 u H21