12538 — IAA Minor Planet Database

Orbital Elements

Epoch (TDB)	2025-11-21 (JD 2461000.5)
Eccentricity (e)	0.4059016556 ± 4.35e-09
Semi-major axis (a)	1.5415724184 AU ± 7.25e-10
Inclination (i)	24.53563599° ± 8.41e-07
Long. of Asc. Node (Ω)	220.68792372° ± 1.75e-06
Arg. of Perihelion (ω)	321.78911043° ± 1.84e-06
Mean Anomaly (M)	163.00612547° ± 9.55e-07
Mean Motion (n)	0.5149515611°/day ± 3.63e-10
Perihelion dist (q)	0.91584562 AU ± 6.72e-09
Aphelion dist (Q)	2.16729922 AU ± 6.78e-09
Orbital Period	1.91401747 yr ± 1.35e-09

Physical Parameters

H (abs. magnitude)	15.96
G (slope)	0.15

Orbit Solution

Source	IAA
Solution Date	2026-05-31
RMS Residual	0.272″
Uncertainty	0
Orbit Type	Apollo
MOID	0.029256 AU
Observations Used	10512
Radar Obs Used	1
Gaia Obs Used	113
Oppositions	14
Arc Total	1987-2025
First Observation Used	1987-08-22
Last Observation Used	2025-12-01

Observations (19002)

Date	Type	RA	Dec	Mag	Band	Observatory
2020-12-18 16:24:08	s	1 +157146.31	2 +92425.943	930.0	–	C57
2020-12-18 16:54:08	S	07 03 28.049	-39 30 06.95	–	V	C57
2020-12-18 16:54:08	s	1 +157653.72	0 +95327.272	2830.0	–	C57
2020-12-18 17:04:08	S	07 03 27.989	-39 30 33.73	–	V	C57
2020-12-18 17:04:08	s	1 +157815.67	9 +96290.069	8060.0	–	C57
2020-12-18 17:14:08	S	07 03 27.833	-39 31 01.63	–	V	C57
2020-12-18 17:14:08	s	1 +157974.10	5 +97250.712	8990.0	–	C57
2020-12-18 17:24:08	S	07 03 27.823	-39 31 29.03	–	V	C57
2020-12-18 17:24:08	s	1 +158129.03	1 +98209.200	5660.0	–	C57
2020-12-18 17:34:08	S	07 03 27.744	-39 31 56.53	–	V	C57
2020-12-18 17:34:08	s	1 +158280.48	7 +99165.535	8110.0	–	C57
2020-12-18 17:44:08	S	07 03 27.653	-39 32 23.75	–	V	C57
2020-12-18 17:44:08	s	1 +158428.50	6 +100119.71	6390.0	–	C57
2020-12-18 17:54:08	S	07 03 27.607	-39 32 51.00	–	V	C57
2020-12-18 17:54:08	s	1 +158573.11	9 +101071.74	530.0	–	C57
2020-12-18 18:04:08	S	07 03 27.360	-39 33 17.86	–	V	C57
2020-12-18 18:04:08	s	1 +158714.35	7 +102021.62	560.0	–	C57
2020-12-18 18:14:08	S	07 03 27.262	-39 33 45.97	–	V	C57
2020-12-18 18:14:08	s	1 +158852.25	0 +102969.35	6540.0	–	C57
2020-12-18 18:24:08	S	07 03 27.086	-39 34 12.22	–	V	C57
2020-12-18 18:24:08	s	1 +158986.82	7 +103914.94	8490.0	–	C57
2020-12-18 18:34:08	S	07 03 27.079	-39 34 33.17	–	V	C57
2020-12-18 18:34:08	s	1 +159118.12	0 +104858.37	6450.0	–	C57
2020-12-18 18:44:08	S	07 03 26.950	-39 35 11.65	–	V	C57
2020-12-18 18:44:08	s	1 +159246.15	6 +105799.67	470.0	–	C57
2020-12-18 18:54:08	S	07 03 26.878	-39 35 33.00	–	V	C57
2020-12-18 18:54:08	s	1 +159370.96	6 +106738.82	580.0	–	C57
2020-12-18 19:04:08	S	07 03 26.875	-39 35 59.71	–	V	C57
2020-12-18 19:04:08	s	1 +159492.57	7 +107675.83	6800.0	–	C57
2020-12-18 19:14:08	S	07 03 26.664	-39 36 30.38	–	V	C57
2020-12-18 19:14:08	s	1 +159611.01	7 +108610.70	9190.0	–	C57
2020-12-18 19:24:08	S	07 03 26.525	-39 36 57.13	–	V	C57
2020-12-18 19:24:08	s	1 +159726.31	5 +109543.43	7770.0	–	C57
2020-12-18 19:34:08	S	07 03 26.362	-39 37 25.00	–	V	C57
2020-12-18 19:34:08	s	1 +159838.49	9 +110474.03	2580.0	–	C57
2020-12-18 19:44:08	S	07 03 26.237	-39 37 52.14	–	V	C57
2020-12-18 19:44:08	s	1 +159947.59	5 +111402.50	3660.0	–	C57
2020-12-18 19:54:08	S	07 03 26.213	-39 38 18.46	–	V	C57
2020-12-18 19:54:08	s	1 +160053.63	0 +112328.84	1030.0	–	C57
2020-12-18 20:04:08	S	07 03 26.040	-39 38 46.43	–	V	C57
2020-12-18 20:04:08	s	1 +160156.63	0 +113253.05	4730.0	–	C57
2020-12-18 20:14:08	S	07 03 25.925	-39 39 13.86	–	V	C57
2020-12-18 20:14:08	s	1 +160256.62	3 +114175.14	4800.0	–	C57
2020-12-18 20:24:08	S	07 03 25.850	-39 39 41.72	–	V	C57
2020-12-18 20:24:08	s	1 +160353.63	4 +115095.10	1260.0	–	C57
2020-12-18 20:34:08	S	07 03 25.795	-39 40 08.26	–	V	C57
2020-12-18 20:34:08	s	1 +160447.68	9 +116012.95	4160.0	–	C57
2020-12-18 20:44:08	S	07 03 25.594	-39 40 35.40	–	V	C57
2020-12-18 20:44:08	s	1 +160538.81	3 +116928.68	3510.0	–	C57
2020-12-18 20:54:08	S	07 03 25.459	-39 41 03.05	–	V	C57

« Prev 1 2 … 87 88 89 … 380 381 Next » 19002 observations

12538 (1998 OH)