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
1999-04-06 04:46:41 C 11 07 20.95 +10 17 27.5 16.6 a 704
1999-04-06 05:06:44 C 11 07 21.27 +10 17 20.3 16.7 a 704
1999-04-06 05:18:08 C 11 07 21.48 +10 17 15.0 z 719
1999-04-06 05:26:29 C 11 07 21.61 +10 17 12.9 16.4 a 704
1999-04-06 06:11:50 C 11 07 22.29 +10 16 55.2 z 719
1999-04-06 07:21:57 C 11 07 23.48 +10 16 29.8 c 699
1999-04-06 07:43:59 C 11 07 23.84 +10 16 21.5 c 699
1999-04-06 08:06:00 C 11 07 24.18 +10 16 13.6 c 699
1999-04-08 02:44:07 C 11 08 15.15 +10 00 20.5 294
1999-04-08 03:42:08 C 11 08 16.17 +10 00 00.0 294
1999-04-09 20:34:53 C 11 09 09.24 +09 44 36.6 z 151
1999-04-09 20:40:25 C 11 09 09.35 +09 44 34.9 z 151
1999-04-09 20:52:16 C 11 09 09.51 +09 44 29.8 z 151
1999-04-11 05:48:02 C 11 09 54.82 +09 32 03.2 z 719
1999-04-11 07:14:38 C 11 09 56.61 +09 31 30.3 z 719
1999-04-15 05:13:26 C 11 12 21.21 +08 55 14.5 z 719
1999-04-15 07:00:59 C 11 12 23.88 +08 54 32.8 z 719
1999-04-16 04:44:23 C 11 13 00.58 +08 46 02.9 z 719
1999-04-16 04:56:07 C 11 13 00.89 +08 45 57.9 z 719
1999-04-16 05:15:19 C 11 13 01.33 +08 45 50.8 z 719
1999-04-16 05:19:59 C 11 13 01.47 +08 45 48.9 z 719
1999-05-07 06:51:58 C 11 31 31.07 +05 18 53.8 18.3 a 704
1999-05-07 07:05:47 C 11 31 31.66 +05 18 49.2 18.3 a 704
1999-05-07 07:19:50 C 11 31 32.29 +05 18 42.4 18.9 a 704
1999-05-07 07:34:01 C 11 31 32.99 +05 18 37.7 19.3 a 704
1999-05-07 07:48:15 C 11 31 33.41 +05 18 30.9 19.4 a 704
2002-09-05 07:55:07 C 00 23 12.784 -00 38 24.89 e 645
2002-09-05 08:00:07 C 00 23 12.621 -00 38 25.96 20.9 e 645
2002-09-07 06:27:01 C 00 21 42.85 -00 48 28.6 19.7 c 704
2002-09-07 07:07:21 C 00 21 41.38 -00 48 36.6 20.2 c 704
2002-09-07 07:27:33 C 00 21 40.74 -00 48 41.0 20.5 c 704
2002-09-07 07:47:53 C 00 21 40.09 -00 48 46.3 19.9 c 704
2002-10-01 04:07:24 C 23 58 33.98 -03 12 57.4 c 699
2002-10-01 04:32:38 C 23 58 32.90 -03 13 03.0 c 699
2002-10-01 04:57:55 C 23 58 31.68 -03 13 10.0 c 699
2002-10-01 05:23:11 C 23 58 30.66 -03 13 16.2 c 699
2002-10-02 10:34:43 C 23 57 13.20 -03 20 46.0 20.8 c 608
2002-10-02 10:49:55 C 23 57 12.53 -03 20 49.6 21.3 c 608
2002-10-02 11:05:32 C 23 57 11.80 -03 20 55.6 21.3 c 608
2002-10-03 06:00:06 C 23 56 22.08 -03 25 40.9 19.8 c 704
2002-10-03 06:22:11 C 23 56 21.19 -03 25 45.4 20.0 c 704
2002-10-03 06:44:28 C 23 56 20.21 -03 25 51.8 19.9 c 704
2002-10-03 07:06:53 C 23 56 19.14 -03 25 58.0 20.1 c 704
2002-10-03 07:29:04 C 23 56 18.11 -03 26 03.5 20.3 c 704
2002-10-31 09:39:05 C 23 31 56.48 -05 30 27.0 c 608
2002-10-31 09:54:41 C 23 31 56.07 -05 30 27.8 c 608
2002-10-31 10:10:22 C 23 31 55.69 -05 30 29.8 c 608
2004-07-15 04:44:00 C 16 37 14.64 -24 07 11.9 c 711
2004-07-15 04:54:59 C 16 37 14.43 -24 07 11.4 c 711
2004-07-15 05:05:58 C 16 37 14.17 -24 07 10.8 c 711