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
2021-02-04 11:04:07	s	1 -129879.09	6 +350094.75	5850.0	–	C57
2021-02-04 11:14:07	S	04 56 09.403	-78 14 49.09	–	V	C57
2021-02-04 11:14:07	s	1 -130164.39	3 +349822.56	1390.0	–	C57
2021-02-04 11:24:07	S	04 56 05.544	-78 15 03.64	–	V	C57
2021-02-04 11:24:07	s	1 -130449.33	2 +349549.42	6350.0	–	C57
2021-02-04 11:34:07	S	04 56 01.390	-78 15 16.85	–	V	C57
2021-02-04 11:34:07	s	1 -130733.91	4 +349275.32	730.0	–	C57
2021-02-04 11:44:07	S	04 55 57.324	-78 15 30.89	–	V	C57
2021-02-04 11:44:07	s	1 -131018.13	5 +349000.27	4530.0	–	C57
2021-02-04 11:54:07	S	04 55 53.280	-78 15 43.60	–	V	C57
2021-02-04 11:54:07	s	1 -131301.99	6 +348724.27	7740.0	–	C57
2021-02-04 12:04:07	S	04 55 49.745	-78 15 57.56	–	V	C57
2021-02-04 12:04:07	s	1 -131585.49	5 +348447.32	370.0	–	C57
2021-02-04 12:14:07	S	04 55 45.806	-78 16 10.85	–	V	C57
2021-02-04 12:14:07	s	1 -131868.63	1 +348169.41	2410.0	–	C57
2021-02-04 12:24:07	S	04 55 41.460	-78 16 24.64	–	V	C57
2021-02-04 12:24:07	s	1 -132151.40	2 +347890.55	3860.0	–	C57
2021-02-04 12:34:07	S	04 55 36.984	-78 16 37.31	–	V	C57
2021-02-04 12:34:07	s	1 -132433.80	8 +347610.73	4720.0	–	C57
2021-02-04 12:44:07	S	04 55 33.542	-78 16 51.85	–	V	C57
2021-02-04 12:44:07	s	1 -132715.84	6 +347329.96	4980.0	–	C57
2021-02-04 12:54:07	S	04 55 29.369	-78 17 05.64	–	V	C57
2021-02-04 12:54:07	s	1 -132997.51	6 +347048.23	4650.0	–	C57
2021-02-04 13:04:07	S	04 55 25.476	-78 17 19.18	–	V	C57
2021-02-04 13:04:07	s	1 -133278.81	7 +346765.54	3710.0	–	C57
2021-02-04 13:14:07	S	04 55 21.238	-78 17 32.14	–	V	C57
2021-02-04 13:14:07	s	1 -133559.74	7 +346481.90	2170.0	–	C57
2021-02-04 13:24:07	S	04 55 17.282	-78 17 45.24	–	V	C57
2021-02-04 13:24:07	s	1 -133840.30	5 +346197.30	30.0	–	C57
2021-02-04 13:34:07	S	04 55 13.428	-78 17 58.27	–	V	C57
2021-02-04 13:34:07	s	1 -134120.49	0 +345911.74	7280.0	–	C57
2021-02-04 13:44:07	S	04 55 09.336	-78 18 12.78	–	V	C57
2021-02-04 13:44:07	s	1 -134400.30	0 +345625.23	3930.0	–	C57
2021-02-04 13:54:07	S	04 55 05.383	-78 18 26.93	–	V	C57
2021-02-04 13:54:07	s	1 -134679.73	5 +345337.76	9960.0	–	C57
2021-02-04 14:04:07	S	04 55 01.524	-78 18 39.74	–	V	C57
2021-02-04 14:04:07	s	1 -134958.79	2 +345049.32	5380.0	–	C57
2021-02-04 14:14:07	S	04 54 57.410	-78 18 52.38	–	V	C57
2021-02-04 14:14:07	s	1 -135237.47	1 +344759.93	180.0	–	C57
2021-02-04 14:24:07	S	04 54 53.052	-78 19 06.20	–	V	C57
2021-02-04 14:24:07	s	1 -135515.77	1 +344469.58	4360.0	–	C57
2021-02-04 14:34:07	S	04 54 48.924	-78 19 20.06	–	V	C57
2021-02-04 14:34:07	s	1 -135793.69	0 +344178.27	7930.0	–	C57
2021-02-04 14:44:07	S	04 54 45.103	-78 19 33.13	–	V	C57
2021-02-04 14:44:07	s	1 -136071.22	7 +343886.00	870.0	–	C57
2021-02-04 14:54:07	S	04 54 41.054	-78 19 47.32	–	V	C57
2021-02-04 14:54:07	s	1 -136348.38	0 +343592.76	3180.0	–	C57
2021-02-04 15:04:07	S	04 54 37.030	-78 20 00.02	–	V	C57
2021-02-04 15:04:07	s	1 -136625.14	8 +343298.57	4870.0	–	C57
2021-02-04 15:14:07	S	04 54 33.329	-78 20 13.09	–	V	C57

« Prev 1 2 … 309 310 311 … 380 381 Next » 19002 observations

12538 (1998 OH)