IAA RAS IAA Minor Planet Database

4503 Cleobulus (1989 WM)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5247715860 ± 6.05e-09
Semi-major axis (a)2.7035835322 AU ± 1.33e-09
Inclination (i)2.51280034° ± 1.53e-07
Long. of Asc. Node (Ω)45.94067668° ± 5.73e-06
Arg. of Perihelion (ω)76.23561973° ± 6.51e-06
Mean Anomaly (M)16.49835791° ± 8.80e-07
Mean Motion (n)0.2217188348°/day ± 1.64e-10
Perihelion dist (q)1.28481971 AU ± 1.64e-08
Aphelion dist (Q)4.12234735 AU ± 1.65e-08
Orbital Period4.44538816 yr ± 3.29e-09
Physical Parameters
H (abs. magnitude)15.82
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.011″
Uncertainty0
Orbit TypeAmor
MOID0.304177 AU
Observations Used1182
Gaia Obs Used157
Oppositions29
Arc Total1980-2026
First Observation Used1980-12-30
Last Observation Used2026-02-18
Observations (1304)
Date Type RA Dec Mag Band Observatory
2020-09-15 13:32:19 C 02 14 15.97 +11 27 54.8 – V T05
2020-09-15 13:32:57 C 02 14 15.96 +11 27 54.9 – V T08
2020-09-15 13:32:58 C 02 14 15.97 +11 27 55.1 – V T05
2020-09-15 13:33:37 C 02 14 15.96 +11 27 54.6 – V T08
2020-09-15 13:33:38 C 02 14 15.91 +11 27 55.0 – V T05
2020-09-15 13:34:17 C 02 14 15.97 +11 27 54.5 – V T05
2020-09-15 13:34:57 C 02 14 15.96 +11 27 54.4 – V T05
2020-09-15 13:38:30 C 02 14 15.90 +11 27 54.5 – V T08
2020-09-15 13:39:10 C 02 14 15.93 +11 27 54.1 – V T08
2020-09-17 08:57:19 C 02 13 59.10 +11 26 48.1 – U I41
2020-09-17 09:45:25 C 02 13 58.64 +11 26 46.6 – U I41
2020-09-19 08:55:53 C 02 13 32.95 +11 25 03.4 – U I41
2020-09-19 14:12:47 C 02 13 29.359 +11 24 51.30 – U F51
2020-09-19 14:27:07 C 02 13 29.174 +11 24 50.63 – U F51
2020-09-19 14:41:25 C 02 13 29.005 +11 24 50.00 – U F51
2020-09-19 14:55:44 C 02 13 28.824 +11 24 49.30 – U F51
2020-09-20 07:53:50 C 02 13 17.81 +11 24 01.3 – U I41
2020-09-20 08:43:16 C 02 13 17.16 +11 23 59.0 – U I41
2020-09-20 09:03:36 C 02 13 16.89 +11 23 58.0 – U I41
2020-09-20 09:19:16 C 02 13 16.68 +11 23 57.3 – U I41
2020-09-20 09:31:28 C 02 13 16.52 +11 23 56.7 – U I41
2020-09-20 11:23:14 C 02 13 15.29 +11 23 52.5 – V T08
2020-09-20 11:27:53 C 02 13 15.22 +11 23 52.3 – V T08
2020-09-20 11:31:54 C 02 13 15.17 +11 23 52.6 – V T08
2020-09-20 11:46:16 C 02 13 14.94 +11 23 51.9 – V T08
2020-09-20 12:03:27 C 02 13 14.49 +11 23 49.0 – U I41
2020-09-21 12:39:41 C 02 12 56.03 +11 22 33.8 – V T08
2020-09-21 12:48:36 C 02 12 55.89 +11 22 33.9 – V T08
2020-09-21 12:53:42 C 02 12 55.78 +11 22 32.8 – V T08
2020-09-21 13:36:11 C 02 12 55.15 +11 22 29.2 – V T08
2020-09-21 18:04:30 C 02 12 51.713 +11 22 20.28 – V P07
2020-09-21 18:49:22 C 02 12 50.974 +11 22 17.65 – V P07
2020-09-21 19:39:36 C 02 12 50.242 +11 22 14.81 – V P07
2020-09-21 20:17:55 C 02 12 49.615 +11 22 12.40 – V P07
2020-09-22 04:11:55 C 02 12 43.50 +11 21 38.7 – V W33
2020-09-22 04:22:22 C 02 12 43.31 +11 21 37.8 – V W33
2020-09-22 04:32:48 C 02 12 43.15 +11 21 37.1 – V W33
2020-09-23 09:08:40 C 02 12 17.18 +11 19 49.7 – U I41
2020-09-23 09:33:35 C 02 12 16.74 +11 19 48.0 – U I41
2020-09-23 10:05:08 C 02 12 16.18 +11 19 46.0 – U I41
2020-09-23 13:48:27 C 02 12 12.48 +11 19 32.8 – V T05
2020-09-23 13:55:28 C 02 12 12.33 +11 19 31.8 – V T05
2020-09-23 14:45:51 C 02 12 11.48 +11 19 28.4 – V T05
2020-09-23 14:55:55 C 02 12 11.28 +11 19 27.9 – V T05
2020-09-25 07:28:39 C 02 11 29.60 +11 16 28.5 – U I41
2020-09-25 09:16:14 C 02 11 27.44 +11 16 20.2 – U I41
2020-09-25 10:46:31 C 02 11 25.91 +11 16 14.6 – V T08
2020-09-25 10:49:10 C 02 11 25.81 +11 16 14.3 – V T08
2020-09-25 11:29:03 C 02 11 25.00 +11 16 10.9 – V T08
2020-09-25 11:47:09 C 02 11 24.65 +11 16 09.7 – V T08