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
2021-02-03 05:14:07	s	1 -74110.833	0 +383770.24	4680.0	–	C57
2021-02-03 05:24:07	S	05 07 30.127	-77 32 53.45	–	V	C57
2021-02-03 05:24:07	s	1 -74443.134	0 +383664.20	2810.0	–	C57
2021-02-03 05:34:07	S	05 07 26.172	-77 33 08.53	–	V	C57
2021-02-03 05:34:07	s	1 -74775.256	0 +383557.24	670.0	–	C57
2021-02-03 05:44:07	S	05 07 22.927	-77 33 22.79	–	V	C57
2021-02-03 05:44:07	s	1 -75107.197	0 +383449.36	8280.0	–	C57
2021-02-03 05:54:07	S	05 07 19.082	-77 33 36.04	–	V	C57
2021-02-03 05:54:07	s	1 -75438.957	0 +383340.57	5630.0	–	C57
2021-02-03 06:04:07	S	05 07 15.514	-77 33 50.11	–	V	C57
2021-02-03 06:04:07	s	1 -75770.535	0 +383230.86	2720.0	–	C57
2021-02-03 06:14:07	S	05 07 12.137	-77 34 06.28	–	V	C57
2021-02-03 06:14:07	s	1 -76101.929	0 +383120.23	9540.0	–	C57
2021-02-03 06:44:07	S	05 07 01.087	-77 34 49.55	–	V	C57
2021-02-03 06:44:07	s	1 -77095.006	0 +382782.85	8420.0	–	C57
2021-02-03 06:54:07	S	05 06 57.192	-77 35 02.90	–	V	C57
2021-02-03 06:54:07	s	1 -77425.659	0 +382668.56	4180.0	–	C57
2021-02-03 07:04:07	S	05 06 54.082	-77 35 19.10	–	V	C57
2021-02-03 07:04:07	s	1 -77756.125	0 +382553.35	9670.0	–	C57
2021-02-03 07:14:07	S	05 06 50.148	-77 35 33.32	–	V	C57
2021-02-03 07:14:07	s	1 -78086.403	0 +382437.22	4890.0	–	C57
2021-02-03 07:24:07	S	05 06 46.238	-77 35 45.96	–	V	C57
2021-02-03 07:24:07	s	1 -78416.492	0 +382320.18	9830.0	–	C57
2021-02-03 07:34:07	S	05 06 42.583	-77 36 01.30	–	V	C57
2021-02-03 07:34:07	s	1 -78746.391	0 +382202.22	4490.0	–	C57
2021-02-03 07:44:07	S	05 06 39.154	-77 36 15.62	–	V	C57
2021-02-03 07:44:07	s	1 -79076.099	0 +382083.34	8880.0	–	C57
2021-02-03 07:54:07	S	05 06 35.304	-77 36 31.18	–	V	C57
2021-02-03 07:54:07	s	1 -79405.615	0 +381963.55	3000.0	–	C57
2021-02-03 08:04:07	S	05 06 31.910	-77 36 45.97	–	V	C57
2021-02-03 08:04:07	s	1 -79734.939	0 +381842.84	6830.0	–	C57
2021-02-03 08:14:07	S	05 06 28.054	-77 36 59.98	–	V	C57
2021-02-03 08:14:07	s	1 -80064.070	0 +381721.21	380.0	–	C57
2021-02-03 08:24:07	S	05 06 24.874	-77 37 14.41	–	V	C57
2021-02-03 08:24:07	s	1 -80393.006	0 +381598.66	3650.0	–	C57
2021-02-03 08:34:07	S	05 06 21.250	-77 37 27.37	–	V	C57
2021-02-03 08:34:07	s	1 -80721.747	0 +381475.20	6630.0	–	C57
2021-02-03 08:44:07	S	05 06 17.815	-77 37 42.10	–	V	C57
2021-02-03 08:44:07	s	1 -81050.292	0 +381350.82	9330.0	–	C57
2021-02-03 08:54:07	S	05 06 13.990	-77 37 57.72	–	V	C57
2021-02-03 08:54:07	s	1 -81378.640	0 +381225.53	1740.0	–	C57
2021-02-03 09:04:07	S	05 06 10.248	-77 38 11.83	–	V	C57
2021-02-03 09:04:07	s	1 -81706.791	0 +381099.31	3870.0	–	C57
2021-02-03 09:14:07	S	05 06 06.156	-77 38 25.40	–	V	C57
2021-02-03 09:14:07	s	1 -82034.743	0 +380972.18	5700.0	–	C57
2021-02-03 09:24:07	S	05 06 02.635	-77 38 40.27	–	V	C57
2021-02-03 09:24:07	s	1 -82362.495	0 +380844.14	7240.0	–	C57
2021-02-03 09:34:07	S	05 05 59.546	-77 38 55.25	–	V	C57
2021-02-03 09:34:07	s	1 -82690.047	0 +380715.17	8490.0	–	C57
2021-02-03 09:44:07	S	05 05 55.214	-77 39 09.22	–	V	C57

« Prev 1 2 … 302 303 304 … 380 381 Next » 19002 observations

12538 (1998 OH)