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
2020-09-26 06:52:41 C 02 11 02.75 +11 14 34.5 – U I41
2020-09-26 07:18:52 C 02 11 02.18 +11 14 32.4 – V G96
2020-09-26 07:25:38 C 02 11 02.04 +11 14 32.0 – V G96
2020-09-26 07:34:25 C 02 11 01.84 +11 14 31.2 – V G96
2020-09-26 07:41:12 C 02 11 01.70 +11 14 30.7 – V G96
2020-09-26 08:25:53 C 02 11 00.77 +11 14 26.8 – U I41
2020-09-26 13:58:30 C 02 10 53.787 +11 13 59.91 – U F51
2020-09-26 14:19:19 C 02 10 53.334 +11 13 58.09 – U F51
2020-09-26 14:40:05 C 02 10 52.881 +11 13 56.23 – U F51
2020-09-28 09:23:21 C 02 09 58.33 +11 10 01.7 – V T08
2020-09-28 09:28:00 C 02 09 58.23 +11 10 01.8 – V T08
2020-09-28 09:33:19 C 02 09 58.14 +11 10 01.2 – V T08
2020-09-28 10:08:26 C 02 09 57.25 +11 09 58.1 – V T08
2020-10-06 13:05:08 C 02 04 26.39 +10 46 20.5 – V T08
2020-10-06 13:10:34 C 02 04 26.18 +10 46 20.0 – V T08
2020-10-06 13:21:12 C 02 04 25.80 +10 46 18.3 – V T08
2020-10-06 13:38:06 C 02 04 25.20 +10 46 16.4 – V T08
2020-10-06 13:38:46 C 02 04 25.24 +10 46 16.8 – V T08
2020-10-07 11:19:30 C 02 03 40.62 +10 43 02.4 – V G96
2020-10-07 11:27:00 C 02 03 40.34 +10 43 01.2 – V G96
2020-10-07 11:28:52 C 02 03 40.58 +10 43 03.3 – V T08
2020-10-07 11:34:29 C 02 03 40.08 +10 43 00.1 – V G96
2020-10-07 11:34:50 C 02 03 40.38 +10 43 02.0 – V T08
2020-10-07 11:41:59 C 02 03 39.80 +10 42 59.0 – V G96
2020-10-07 12:05:27 C 02 03 39.23 +10 42 57.4 – V T08
2020-10-07 12:20:56 C 02 03 38.67 +10 42 55.7 – V T08
2020-10-08 07:46:28 C 02 02 57.60 +10 39 56.0 – V 703
2020-10-08 07:54:07 C 02 02 57.33 +10 39 54.4 – V 703
2020-10-08 08:01:46 C 02 02 57.04 +10 39 52.7 – V 703
2020-10-08 08:09:26 C 02 02 56.74 +10 39 51.8 – V 703
2020-10-08 11:49:53 C 02 02 48.72 +10 39 19.6 – V T05
2020-10-08 11:54:38 C 02 02 48.52 +10 39 18.7 – V T05
2020-10-08 12:02:37 C 02 02 48.21 +10 39 17.6 – V T05
2020-10-08 12:53:49 C 02 02 46.26 +10 39 09.4 – V T05
2020-10-09 12:08:24 C 02 01 55.11 +10 35 28.7 – V T05
2020-10-09 12:34:02 C 02 01 54.107 +10 35 24.32 – U F52
2020-10-09 12:44:58 C 02 01 53.68 +10 35 22.7 – V T05
2020-10-09 12:50:22 C 02 01 53.46 +10 35 21.8 – V T05
2020-10-09 13:09:18 C 02 01 52.719 +10 35 18.56 – U F52
2020-10-09 13:18:32 C 02 01 52.35 +10 35 16.9 – V T05
2020-10-09 13:26:55 C 02 01 52.028 +10 35 15.67 – U F52
2020-10-10 08:53:10 C 02 01 08.39 +10 32 05.1 – V T08
2020-10-10 09:04:08 C 02 01 07.94 +10 32 03.3 – V T08
2020-10-10 09:07:40 C 02 01 07.81 +10 32 02.7 – V T08
2020-10-10 09:26:10 C 02 01 07.06 +10 31 59.6 – V T08
2020-10-11 08:02:08 C 02 00 14.06 +10 28 09.9 – V 703
2020-10-11 08:09:38 C 02 00 13.73 +10 28 08.9 – V 703
2020-10-11 08:17:09 C 02 00 13.39 +10 28 07.4 – V 703
2020-10-11 08:24:40 C 02 00 13.09 +10 28 06.1 – V 703
2020-10-11 08:49:14 C 02 00 12.456 +10 28 03.34 – U F52