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
1980-12-30 05:26:00 A 06 09 35.08 +30 14 15.7 15.5 688
1980-12-30 06:15:00 A 06 09 35.10 +30 14 28.6 688
1981-01-04 06:53:00 A 06 10 38.40 +30 43 27.3 675
1981-02-24 02:50:00 A 07 23 46.08 +29 33 30.1 17.0 675
1981-02-24 03:24:59 A 07 23 49.35 +29 33 18.7 675
1989-11-28 11:28:44 A 07 39 36.19 +25 11 42.9 17.5 675
1989-11-28 12:35:59 A 07 39 41.92 +25 11 45.5 675
1989-12-01 02:47:56 A 07 45 18.51 +25 15 26.2 A 801
1989-12-01 03:43:36 A 07 45 23.50 +25 15 30.4 A 801
1989-12-01 07:13:03 A 07 45 42.08 +25 15 46.4 D 691
1989-12-01 08:59:31 A 07 45 50.56 +25 15 53.0 A 801
1989-12-01 09:07:56 A 07 45 51.27 +25 15 53.5 A 801
1989-12-01 10:18:20 A 07 45 57.86 +25 16 00.7 693
1989-12-01 11:11:59 A 07 46 02.38 +25 16 03.5 693
1989-12-02 06:17:21 A 07 47 44.91 +25 17 12.5 A 801
1989-12-02 06:33:33 A 07 47 46.26 +25 17 13.4 A 801
1989-12-05 09:01:31 A 07 54 20.08 +25 22 01.6 D 691
1989-12-05 09:37:41 A 07 54 23.09 +25 22 04.3 D 691
1989-12-05 09:50:05 A 07 54 24.10 +25 22 05.1 D 691
1989-12-05 12:27:12 A 07 54 37.08 +25 22 14.8 D 691
1989-12-27 08:22:21 A 08 36 18.50 +26 02 51.4 801
1989-12-27 08:54:35 A 08 36 20.63 +26 02 53.3 801
1989-12-29 08:09:46 A 08 39 33.37 +26 06 58.2 801
1989-12-29 08:27:11 A 08 39 34.40 +26 06 59.4 801
1990-01-17 05:42:06 A 09 04 20.70 +26 34 11.3 657
1990-01-17 06:12:05 A 09 04 21.87 +26 34 13.7 657
1990-01-18 05:52:35 A 09 05 20.68 +26 34 27.4 657
1990-01-18 06:12:35 A 09 05 21.54 +26 34 28.9 657
1990-01-21 15:42:00 A 09 08 29.30 +26 34 12.9 14.0 C 402
1990-01-21 16:07:00 A 09 08 30.05 +26 34 12.1 C 402
1990-01-23 05:37:42 A 09 09 50.07 +26 33 09.1 A 801
1990-01-23 06:53:52 A 09 09 52.23 +26 33 06.2 A 801
1990-01-26 07:11:29 09 12 16.53 +26 29 38.5 675
1990-01-26 07:59:59 09 12 17.72 +26 29 36.3 675
1990-01-28 06:57:55 A 09 13 43.21 +26 26 01.5 A 801
1990-01-28 07:20:53 A 09 13 43.73 +26 25 59.3 A 801
1990-02-16 21:18:30 A 09 25 50.73 +24 52 13.2 C 589
1990-02-16 22:18:29 A 09 25 51.85 +24 51 56.5 C 589
1990-02-16 23:18:29 A 09 25 52.98 +24 51 36.2 C 589
1990-02-20 21:07:30 A 09 28 19.36 +24 20 33.9 046
1990-02-20 21:27:59 A 09 28 19.72 +24 20 27.3 046
1990-02-21 05:45:28 A 09 28 32.21 +24 17 34.5 801
1990-02-21 06:41:32 A 09 28 33.46 +24 17 14.4 801
1990-02-21 19:31:29 A 09 28 55.83 +24 12 36.2 046
1990-02-21 19:51:55 A 09 28 56.25 +24 12 30.6 046
1990-02-22 18:32:40 A 09 29 33.65 +24 04 15.2 046
1990-02-22 18:53:15 A 09 29 34.14 +24 04 07.7 046
1990-02-22 21:15:21 A 09 29 37.64 +24 03 20.6 C 565
1990-02-22 22:13:33 A 09 29 38.95 +24 03 00.1 C 565
1990-02-26 05:45:35 A 09 31 54.56 +23 32 34.9 801