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
1990-02-26 06:09:03 A 09 31 55.06 +23 32 26.6 801
1990-02-28 20:24:00 A 09 33 50.08 +23 07 05.4 C 589
1990-02-28 20:29:24 A 09 33 49.98 +23 07 04.5 C 565
1990-02-28 20:31:30 A 09 33 50.29 +23 07 03.5 C 589
1990-02-28 20:38:59 A 09 33 50.47 +23 07 01.8 C 589
1990-02-28 21:25:42 A 09 33 51.72 +23 06 42.9 C 565
1990-03-01 20:55:59 A 09 34 36.67 +22 56 47.8 C 565
1990-03-01 21:53:47 A 09 34 38.07 +22 56 21.9 C 565
1990-03-02 07:42:36 A 09 34 57.09 +22 52 10.0 657
1990-03-02 08:39:35 A 09 34 58.51 +22 51 44.2 657
1990-03-12 08:51:30 A 09 43 40.26 +21 02 19.7 568
1990-03-22 03:19:14 A 09 53 47.47 +19 05 56.0 801
1990-03-22 03:41:13 A 09 53 48.41 +19 05 44.7 801
1990-03-23 03:33:27 A 09 54 55.46 +18 53 35.2 801
1990-03-23 03:48:51 A 09 54 56.06 +18 53 27.4 801
1990-04-22 07:02:00 A 10 34 28.30 +12 32 57.4 688
1990-04-22 07:17:10 A 10 34 29.24 +12 32 49.1 688
1993-09-17 06:27:34 23 51 44.72 -04 19 03.7 711
1995-06-02 14:22:24 C 16 33 37.27 -23 25 22.3 413
1995-06-02 14:28:58 C 16 33 36.99 -23 25 21.6 413
1995-06-04 16:41:41 C 16 31 18.25 -23 21 38.0 413
1995-06-04 16:47:06 C 16 31 18.06 -23 21 37.8 413
1995-06-05 16:22:57 C 16 30 13.80 -23 19 50.7 413
1995-06-05 16:28:19 C 16 30 13.55 -23 19 50.0 413
1995-06-20 14:02:39 C 16 15 41.75 -22 51 41.8 413
1995-06-30 08:24:40 C 16 08 33.40 -22 35 10.9 c 608
1995-06-30 09:46:48 C 16 08 31.11 -22 35 04.0 c 608
1995-07-05 09:08:32 C 16 05 46.20 -22 28 06.2 c 608
1995-07-05 10:06:43 C 16 05 44.84 -22 28 03.6 c 608
1998-09-19 02:01:45 C 05 15 30.26 +22 58 11.2 557
1998-09-19 02:05:07 C 05 15 30.62 +22 58 11.8 557
1998-09-19 02:08:27 C 05 15 30.95 +22 58 12.3 557
1998-10-21 03:48:50 C 06 36 52.75 +24 16 44.7 118
1998-10-21 04:00:55 C 06 36 54.07 +24 16 45.1 118
1998-10-30 09:02:12 C 07 02 18.38 +24 18 08.3 17.8 a 704
1998-10-30 09:17:27 C 07 02 20.06 +24 18 08.5 a 704
1998-10-30 09:32:56 C 07 02 21.78 +24 18 08.9 a 704
1998-10-30 09:48:32 C 07 02 23.64 +24 18 09.2 a 704
1998-11-19 10:38:09 C 08 00 43.63 +23 43 44.6 c 699
1998-11-19 10:56:31 C 08 00 45.79 +23 43 43.3 c 699
1998-11-19 11:34:20 C 08 00 50.48 +23 43 38.2 l 689
1998-11-19 11:39:34 C 08 00 51.01 +23 43 38.0 c 699
1998-11-25 08:57:58 C 08 18 36.40 +23 23 22.8 c 699
1998-11-25 09:41:24 C 08 18 41.73 +23 23 16.5 c 699
1998-11-25 10:18:08 C 08 18 46.24 +23 23 10.8 c 699
1998-12-01 08:40:49 C 08 36 47.95 +22 58 05.0 c 699
1998-12-01 09:20:49 C 08 36 52.89 +22 57 57.5 c 699
1998-12-01 09:57:34 C 08 36 57.42 +22 57 51.0 c 699
1998-12-02 07:58:45 C 08 39 44.97 +22 53 31.2 z 825
1998-12-02 08:10:45 C 08 39 46.43 +22 53 28.8 z 825