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
2021-01-21 03:44:08	S	06 11 10.500	-68 59 57.55	–	V	C57
2021-01-21 03:44:08	s	1 -87121.464	0 +383322.25	2360.0	–	C57
2021-01-21 03:54:08	S	06 11 09.444	-69 00 15.37	–	V	C57
2021-01-21 03:54:08	s	1 -87445.131	0 +383187.44	2080.0	–	C57
2021-01-21 04:14:08	S	06 11 07.049	-69 00 50.08	–	V	C57
2021-01-21 04:14:08	s	1 -88091.868	0 +382915.12	530.0	–	C57
2021-01-21 04:24:08	S	06 11 04.944	-69 01 07.97	–	V	C57
2021-01-21 04:24:08	s	1 -88414.937	0 +382777.60	9270.0	–	C57
2021-01-21 04:44:08	S	06 11 01.675	-69 01 41.38	–	V	C57
2021-01-21 04:44:08	s	1 -89060.472	0 +382499.84	5730.0	–	C57
2021-01-21 05:04:08	S	06 10 59.424	-69 02 17.02	–	V	C57
2021-01-21 05:04:08	s	1 -89705.196	0 +382218.46	860.0	–	C57
2021-01-21 05:14:08	S	06 10 57.550	-69 02 33.65	–	V	C57
2021-01-21 05:14:08	s	1 -90027.251	0 +382076.41	7910.0	–	C57
2021-01-21 05:24:08	S	06 10 55.922	-69 02 51.00	–	V	C57
2021-01-21 05:24:08	s	1 -90349.101	0 +381933.45	4630.0	–	C57
2021-01-21 05:34:08	S	06 10 54.425	-69 03 07.96	–	V	C57
2021-01-21 05:34:08	s	1 -90670.746	0 +381789.59	1000.0	–	C57
2021-01-21 05:44:08	S	06 10 52.882	-69 03 24.30	–	V	C57
2021-01-21 05:44:08	s	1 -90992.183	0 +381644.82	7040.0	–	C57
2021-01-21 05:54:08	S	06 10 51.389	-69 03 42.52	–	V	C57
2021-01-21 05:54:08	s	1 -91313.412	0 +381499.14	2720.0	–	C57
2021-01-21 06:04:08	S	06 10 50.076	-69 03 59.80	–	V	C57
2021-01-21 06:04:08	s	1 -91634.432	0 +381352.56	8060.0	–	C57
2021-01-21 06:14:08	S	06 10 48.634	-69 04 17.29	–	V	C57
2021-01-21 06:14:08	s	1 -91955.242	0 +381205.06	3050.0	–	C57
2021-01-21 06:24:08	S	06 10 46.937	-69 04 33.74	–	V	C57
2021-01-21 06:24:08	s	1 -92275.842	0 +381056.67	7700.0	–	C57
2021-01-21 06:34:08	S	06 10 45.667	-69 04 50.52	–	V	C57
2021-01-21 06:34:08	s	1 -92596.230	0 +380907.36	1990.0	–	C57
2021-01-21 06:44:08	S	06 10 43.915	-69 05 06.83	–	V	C57
2021-01-21 06:44:08	s	1 -92916.406	0 +380757.15	5930.0	–	C57
2021-01-21 06:54:08	S	06 10 42.319	-69 05 24.36	–	V	C57
2021-01-21 06:54:08	s	1 -93236.368	0 +380606.03	9520.0	–	C57
2021-01-21 07:04:08	S	06 10 41.098	-69 05 41.60	–	V	C57
2021-01-21 07:04:08	s	1 -93556.116	0 +380454.00	2750.0	–	C57
2021-01-21 07:14:08	S	06 10 39.650	-69 05 59.50	–	V	C57
2021-01-21 07:14:08	s	1 -93875.649	0 +380301.07	5620.0	–	C57
2021-01-21 07:24:08	S	06 10 38.069	-69 06 16.85	–	V	C57
2021-01-21 07:24:08	s	1 -94194.966	0 +380147.23	8140.0	–	C57
2021-01-21 07:34:08	S	06 10 36.576	-69 06 33.30	–	V	C57
2021-01-21 07:34:08	s	1 -94514.066	0 +379992.48	290.0	–	C57
2021-01-21 07:44:08	S	06 10 34.930	-69 06 49.75	–	V	C57
2021-01-21 07:44:08	s	1 -94832.949	0 +379836.82	2080.0	–	C57
2021-01-21 07:54:08	S	06 10 33.458	-69 07 07.21	–	V	C57
2021-01-21 07:54:08	s	1 -95151.612	0 +379680.26	3510.0	–	C57
2021-01-21 08:04:08	S	06 10 32.033	-69 07 24.71	–	V	C57
2021-01-21 08:04:08	s	1 -95470.056	0 +379522.78	4580.0	–	C57
2021-01-21 08:14:08	S	06 10 30.905	-69 07 41.99	–	V	C57
2021-01-21 08:14:08	s	1 -95788.279	0 +379364.40	5270.0	–	C57

« Prev 1 2 … 240 241 242 … 380 381 Next » 19002 observations

12538 (1998 OH)