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
2018-01-20 03:45:31 C 03 02 17.80 -14 56 30.3 U 703
2018-01-20 03:53:12 C 03 02 18.14 -14 56 24.8 U 703
2018-01-20 04:00:52 C 03 02 18.54 -14 56 18.1 U 703
2018-01-23 06:55:06 C 03 06 00.64 -13 57 48.4 U T05
2018-01-23 07:01:05 C 03 06 00.94 -13 57 43.8 U T05
2018-01-23 07:07:01 C 03 06 01.19 -13 57 39.3 U T05
2018-01-23 07:11:47 C 03 06 01.45 -13 57 36.1 U T05
2018-01-23 07:17:48 C 03 06 01.74 -13 57 31.2 U T05
2018-01-23 07:23:45 C 03 06 02.03 -13 57 27.2 U T05
2018-01-23 07:35:01 C 03 06 02.60 -13 57 17.6 U T05
2018-02-07 07:31:17 C 03 24 41.97 -09 39 22.6 U T08
2018-02-07 07:31:57 C 03 24 42.08 -09 39 21.7 U T08
2018-02-07 07:45:18 C 03 24 42.75 -09 39 11.7 U T08
2018-02-07 07:45:58 C 03 24 42.84 -09 39 11.1 U T08
2018-02-07 07:59:26 C 03 24 43.52 -09 39 03.1 U T08
2018-02-24 02:55:03 C 03 47 02.02 -05 33 01.7 U 703
2018-02-24 03:02:53 C 03 47 02.46 -05 32 57.0 U 703
2018-02-24 03:10:41 C 03 47 02.91 -05 32 52.9 U 703
2018-02-24 03:18:31 C 03 47 03.42 -05 32 47.6 U 703
2018-11-07 15:04:31 C 08 47 55.844 -03 08 33.05 U F52
2018-11-07 15:17:15 C 08 47 55.934 -03 08 35.54 U F52
2018-11-07 15:29:37 C 08 47 56.039 -03 08 38.12 U F52
2018-12-15 13:26:11 C 08 41 15.496 -05 18 41.21 U F51
2018-12-15 13:43:25 C 08 41 15.096 -05 18 42.18 U F51
2018-12-15 14:00:44 C 08 41 14.684 -05 18 43.01 U F51
2018-12-19 07:46:57 C 08 39 04.73 -05 22 27.5 V G96
2018-12-19 07:54:23 C 08 39 04.53 -05 22 27.6 V G96
2018-12-19 08:01:50 C 08 39 04.35 -05 22 27.8 V G96
2018-12-19 08:09:16 C 08 39 04.21 -05 22 27.8 V G96
2019-01-05 11:16:45 C 08 26 16.244 -05 10 32.03 U F51
2019-01-05 11:33:01 C 08 26 15.634 -05 10 30.38 U F51
2019-01-05 11:49:14 C 08 26 15.037 -05 10 29.15 U F51
2019-01-05 12:05:24 C 08 26 14.443 -05 10 27.29 U F51
2019-01-12 08:51:25 C 08 20 07.57 -04 51 27.4 V G96
2019-01-12 09:06:14 C 08 20 06.99 -04 51 25.4 V G96
2019-01-12 09:13:39 C 08 20 06.70 -04 51 24.3 V G96
2020-01-19 12:32:30 C 10 36 21.355 -02 08 38.76 U F52
2020-01-19 12:49:45 C 10 36 20.962 -02 08 36.31 U F52
2020-01-19 13:06:58 C 10 36 20.575 -02 08 33.78 U F52
2020-01-19 13:24:07 C 10 36 20.177 -02 08 31.50 U F52
2020-01-25 10:53:07 C 10 32 53.241 -01 45 57.19 U F51
2020-01-25 11:11:16 C 10 32 52.743 -01 45 53.90 U F51
2020-01-25 11:29:26 C 10 32 52.243 -01 45 50.81 U F51
2020-01-25 11:47:40 C 10 32 51.746 -01 45 47.47 U F51
2020-01-28 08:46:49 C 10 30 57.83 -01 32 45.2 V G96
2020-01-28 08:54:11 C 10 30 57.63 -01 32 43.4 V G96
2020-01-28 09:01:35 C 10 30 57.40 -01 32 42.2 V G96
2020-01-28 09:08:58 C 10 30 57.19 -01 32 40.6 V G96
2020-01-30 12:06:17 C 10 29 28.013 -01 22 10.95 U F52
2020-01-30 12:24:24 C 10 29 27.454 -01 22 06.96 U F52