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
2018-11-16 17:44:39	S	04 33 21.780	+01 43 15.06	–	V	C57
2018-11-16 17:44:39	s	1 +146789.50	3 +114761.72	3810.0	–	C57
2018-11-16 18:14:39	S	04 33 19.934	+01 42 29.23	–	V	C57
2018-11-16 18:14:39	s	1 +146725.90	9 +117352.85	0.689	–	C57
2018-11-16 18:44:39	S	04 33 18.046	+01 41 43.69	–	V	C57
2018-11-16 18:44:39	s	1 +146642.66	3 +119928.27	0.584	–	C57
2018-11-16 19:14:39	S	04 33 16.037	+01 40 57.76	–	V	C57
2018-11-16 19:14:39	s	1 +146540.18	6 +122487.97	0.31	–	C57
2018-11-16 19:44:39	S	04 33 14.042	+01 40 12.25	–	V	C57
2018-11-16 19:44:39	s	1 +146418.88	9 +125031.95	0.104	–	C57
2018-11-16 20:14:39	S	04 33 12.144	+01 39 27.18	–	V	C57
2018-11-16 20:14:39	s	1 +146279.16	9 +127560.21	0.2	–	C57
2018-11-16 20:44:39	S	04 33 10.214	+01 38 42.25	–	V	C57
2018-11-16 20:44:39	s	1 +146121.41	7 +130072.75	0.824	–	C57
2018-11-16 21:14:39	S	04 33 08.220	+01 37 56.35	–	V	C57
2018-11-16 21:14:39	s	1 +145946.00	9 +132569.59	0.197	–	C57
2018-11-16 21:44:39	S	04 33 06.274	+01 37 11.24	–	V	C57
2018-11-16 21:44:39	s	1 +145753.31	5 +135050.73	0.537	–	C57
2018-11-16 22:14:39	S	04 33 04.298	+01 36 26.17	–	V	C57
2018-11-16 22:14:39	s	1 +145543.69	4 +137516.20	0.054	–	C57
2018-11-16 22:44:39	S	04 33 02.285	+01 35 41.71	–	V	C57
2018-11-16 22:44:39	s	1 +145317.49	5 +139966.02	0.955	–	C57
2018-11-16 23:14:39	S	04 33 00.271	+01 34 55.38	–	V	C57
2018-11-16 23:14:39	s	1 +145075.05	8 +142400.20	0.44	–	C57
2018-11-16 23:44:39	S	04 32 58.346	+01 34 08.00	–	V	C57
2018-11-16 23:44:39	s	1 +144816.71	5 +144818.78	0.707	–	C57
2018-11-17 00:14:39	S	04 32 56.417	+01 33 23.00	–	V	C57
2018-11-17 00:14:39	s	1 +144542.79	0 +147221.79	0.947	–	C57
2018-11-17 00:44:39	S	04 32 54.439	+01 32 38.36	–	V	C57
2018-11-17 00:44:39	s	1 +144253.59	8 +149609.26	0.349	–	C57
2018-11-17 01:14:39	S	04 32 52.428	+01 31 53.58	–	V	C57
2018-11-17 01:14:39	s	1 +143949.44	6 +151981.22	0.095	–	C57
2018-11-17 01:44:39	S	04 32 50.398	+01 31 06.49	–	V	C57
2018-11-17 01:44:39	s	1 +143630.63	3 +154337.71	0.365	–	C57
2018-11-17 02:14:39	S	04 32 48.497	+01 30 22.07	–	V	C57
2018-11-17 02:14:39	s	1 +143297.45	3 +156678.77	0.333	–	C57
2018-11-17 02:44:39	S	04 32 46.423	+01 29 37.86	–	V	C57
2018-11-17 02:44:39	s	1 +142950.18	9 +159004.45	0.171	–	C57
2018-11-17 04:44:39	S	04 32 38.443	+01 26 33.79	–	V	C57
2018-11-17 04:44:39	s	1 +141425.75	9 +168154.12	0.513	–	C57
2018-11-17 05:14:39	S	04 32 36.533	+01 25 50.45	–	V	C57
2018-11-17 05:14:39	s	1 +141012.11	6 +170403.51	0.136	–	C57
2018-11-17 05:44:39	S	04 32 34.394	+01 25 04.19	–	V	C57
2018-11-17 05:44:39	s	1 +140585.95	9 +172637.80	0.579	–	C57
2018-11-17 06:14:39	S	04 32 32.578	+01 24 19.66	–	V	C57
2018-11-17 06:14:39	s	1 +140147.53	0 +174857.01	0.986	–	C57
2018-11-17 06:34:01	C	04 32 22.80	+01 27 03.0	–	V	703
2018-11-17 06:41:43	C	04 32 22.28	+01 26 51.9	–	V	703
2018-11-17 06:44:39	S	04 32 30.384	+01 23 33.04	–	V	C57
2018-11-17 06:44:39	s	1 +139697.06	2 +177061.22	0.503	–	C57

« Prev 1 2 … 29 30 31 … 380 381 Next » 19002 observations

12538 (1998 OH)