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
2021-02-02 01:24:07	s	1 -16746.829	0 +388547.77	1870.0	–	C57
2021-02-02 01:34:07	S	05 17 07.476	-76 51 12.82	–	V	C57
2021-02-02 01:34:07	s	1 -17097.625	0 +388596.52	2640.0	–	C57
2021-02-02 01:44:07	S	05 17 03.967	-76 51 29.12	–	V	C57
2021-02-02 01:44:07	s	1 -17448.378	0 +388644.33	3390.0	–	C57
2021-02-02 01:54:07	S	05 17 00.408	-76 51 43.45	–	V	C57
2021-02-02 01:54:07	s	1 -17799.086	0 +388691.19	4120.0	–	C57
2021-02-02 02:34:07	S	05 16 46.788	-76 52 47.14	–	V	C57
2021-02-02 02:34:07	s	1 -19201.468	0 +388869.17	6840.0	–	C57
2021-02-02 03:04:07	S	05 16 37.723	-76 53 32.17	–	V	C57
2021-02-02 03:04:07	s	1 -20252.754	0 +388992.72	8610.0	–	C57
2021-02-02 03:14:07	S	05 16 34.433	-76 53 48.34	–	V	C57
2021-02-02 03:14:07	s	1 -20603.083	0 +389032.02	9140.0	–	C57
2021-02-02 03:24:07	S	05 16 31.034	-76 54 02.84	–	V	C57
2021-02-02 03:24:07	s	1 -20953.361	0 +389070.37	9640.0	–	C57
2021-02-02 03:34:07	S	05 16 27.710	-76 54 18.47	–	V	C57
2021-02-02 03:34:07	s	1 -21303.586	0 +389107.78	110.0	–	C57
2021-02-02 03:44:07	S	05 16 24.494	-76 54 33.26	–	V	C57
2021-02-02 03:44:07	s	1 -21653.759	0 +389144.25	540.0	–	C57
2021-02-02 03:54:07	S	05 16 20.981	-76 54 48.96	–	V	C57
2021-02-02 03:54:07	s	1 -22003.878	0 +389179.77	940.0	–	C57
2021-02-02 04:04:07	S	05 16 17.714	-76 55 04.12	–	V	C57
2021-02-02 04:04:07	s	1 -22353.942	0 +389214.35	1300.0	–	C57
2021-02-02 04:14:07	S	05 16 14.419	-76 55 19.52	–	V	C57
2021-02-02 04:14:07	s	1 -22703.952	0 +389247.99	1620.0	–	C57
2021-02-02 04:24:07	S	05 16 11.182	-76 55 34.28	–	V	C57
2021-02-02 04:24:07	s	1 -23053.904	0 +389280.69	1900.0	–	C57
2021-02-02 04:34:07	S	05 16 07.831	-76 55 50.20	–	V	C57
2021-02-02 04:34:07	s	1 -23403.800	0 +389312.45	2140.0	–	C57
2021-02-02 04:44:07	S	05 16 04.694	-76 56 05.35	–	V	C57
2021-02-02 04:44:07	s	1 -23753.638	0 +389343.27	2340.0	–	C57
2021-02-02 04:54:07	S	05 16 00.912	-76 56 21.01	–	V	C57
2021-02-02 04:54:07	s	1 -24103.418	0 +389373.14	2490.0	–	C57
2021-02-02 05:04:07	S	05 15 57.780	-76 56 34.73	–	V	C57
2021-02-02 05:04:07	s	1 -24453.137	0 +389402.08	2600.0	–	C57
2021-02-02 05:14:07	S	05 15 54.211	-76 56 50.57	–	V	C57
2021-02-02 05:14:07	s	1 -24802.797	0 +389430.07	2660.0	–	C57
2021-02-02 05:24:07	S	05 15 51.230	-76 57 05.90	–	V	C57
2021-02-02 05:24:07	s	1 -25152.395	0 +389457.13	2670.0	–	C57
2021-02-02 05:34:07	S	05 15 47.861	-76 57 22.25	–	V	C57
2021-02-02 05:34:07	s	1 -25501.932	0 +389483.24	2630.0	–	C57
2021-02-02 05:44:07	S	05 15 44.474	-76 57 36.43	–	V	C57
2021-02-02 05:44:07	s	1 -25851.405	0 +389508.42	2530.0	–	C57
2021-02-02 05:54:07	S	05 15 40.855	-76 57 52.56	–	V	C57
2021-02-02 05:54:07	s	1 -26200.815	0 +389532.66	2390.0	–	C57
2021-02-02 06:04:07	S	05 15 37.867	-76 58 06.78	–	V	C57
2021-02-02 06:04:07	s	1 -26550.161	0 +389555.96	2190.0	–	C57
2021-02-02 06:14:07	S	05 15 34.685	-76 58 22.48	–	V	C57
2021-02-02 06:14:07	s	1 -26899.441	0 +389578.32	1930.0	–	C57
2021-02-02 07:04:07	S	05 15 17.618	-76 59 42.50	–	V	C57

« Prev 1 2 … 296 297 298 … 380 381 Next » 19002 observations

12538 (1998 OH)