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
2021-07-22 15:43:59	S	18 49 26.210	+33 59 14.21	–	V	C57
2021-07-22 15:43:59	s	1 -151208.40	9 -11020.895	1690.0	–	C57
2021-07-22 15:53:59	S	18 49 25.759	+33 59 08.70	–	V	C57
2021-07-22 15:53:59	s	1 -150586.67	5 -11914.977	7440.0	–	C57
2021-07-22 16:03:59	S	18 49 25.188	+33 59 00.20	–	V	C57
2021-07-22 16:03:59	s	1 -149959.47	9 -12808.620	6180.0	–	C57
2021-07-22 16:13:59	S	18 49 24.746	+33 58 52.86	–	V	C57
2021-07-22 16:13:59	s	1 -149326.78	4 -13701.786	7800.0	–	C57
2021-07-22 16:23:59	S	18 49 24.007	+33 58 44.51	–	V	C57
2021-07-22 16:23:59	s	1 -148688.55	1 -14594.436	2170.0	–	C57
2021-07-22 16:33:59	S	18 49 23.666	+33 58 45.12	–	V	C57
2021-07-22 16:33:59	s	1 -148044.74	1 -15486.532	9180.0	–	C57
2021-07-22 16:43:59	S	18 49 23.261	+33 58 36.84	–	V	C57
2021-07-22 16:43:59	s	1 -147395.31	4 -16378.033	8710.0	–	C57
2021-07-22 16:53:59	S	18 49 22.663	+33 58 34.25	–	V	C57
2021-07-22 16:53:59	s	1 -146740.23	2 -17268.898	650.0	–	C57
2021-07-22 17:03:59	S	18 49 22.090	+33 58 27.05	–	V	C57
2021-07-22 17:03:59	s	1 -146079.45	6 -18159.087	4870.0	–	C57
2021-07-22 17:13:59	S	18 49 21.475	+33 58 21.22	–	V	C57
2021-07-22 17:13:59	s	1 -145412.94	5 -19048.555	1260.0	–	C57
2021-07-22 17:23:59	S	18 49 20.868	+33 58 14.59	–	V	C57
2021-07-22 17:23:59	s	1 -144740.66	0 -19937.260	9700.0	–	C57
2021-07-22 17:33:59	S	18 49 20.359	+33 58 06.92	–	V	C57
2021-07-22 17:33:59	s	1 -144062.56	1 -20825.158	70.0	–	C57
2021-07-22 17:43:59	S	18 49 19.848	+33 58 04.66	–	V	C57
2021-07-22 17:43:59	s	1 -143378.60	7 -21712.202	2240.0	–	C57
2021-07-22 17:53:59	S	18 49 19.325	+33 57 56.77	–	V	C57
2021-07-22 17:53:59	s	1 -142688.75	9 -22598.348	6100.0	–	C57
2021-07-22 18:03:59	S	18 49 18.754	+33 57 50.51	–	V	C57
2021-07-22 18:03:59	s	1 -141992.97	6 -23483.546	1520.0	–	C57
2021-07-22 18:13:59	S	18 49 18.089	+33 57 44.32	–	V	C57
2021-07-22 18:13:59	s	1 -141291.21	8 -24367.750	8390.0	–	C57
2021-07-22 18:23:59	S	18 49 17.851	+33 57 37.12	–	V	C57
2021-07-22 18:23:59	s	1 -140583.44	3 -25250.910	6580.0	–	C57
2021-07-22 18:33:59	S	18 49 16.975	+33 57 34.45	–	V	C57
2021-07-22 18:33:59	s	1 -139869.61	1 -26132.975	5970.0	–	C57
2021-07-22 18:43:59	S	18 49 16.646	+33 57 28.15	–	V	C57
2021-07-22 18:43:59	s	1 -139149.68	2 -27013.895	6440.0	–	C57
2021-07-22 18:53:59	S	18 49 15.929	+33 57 20.63	–	V	C57
2021-07-22 18:53:59	s	1 -138423.61	3 -27893.617	7860.0	–	C57
2021-07-22 19:03:59	S	18 49 15.734	+33 57 14.58	–	V	C57
2021-07-22 19:03:59	s	1 -137691.36	3 -28772.087	120.0	–	C57
2021-07-22 19:13:59	S	18 49 14.801	+33 57 11.63	–	V	C57
2021-07-22 19:13:59	s	1 -136952.89	2 -29649.251	3080.0	–	C57
2021-07-22 19:23:59	S	18 49 14.582	+33 57 04.68	–	V	C57
2021-07-22 19:23:59	s	1 -136208.15	9 -30525.053	6640.0	–	C57
2021-07-22 19:33:59	S	18 49 13.949	+33 56 59.53	–	V	C57
2021-07-22 19:33:59	s	1 -135457.12	1 -31399.437	650.0	–	C57
2021-07-22 19:43:59	S	18 49 13.526	+33 56 54.89	–	V	C57
2021-07-22 19:43:59	s	1 -134699.73	7 -32272.343	5010.0	–	C57

« Prev 1 2 … 361 362 363 … 380 381 Next » 19002 observations

12538 (1998 OH)