IAA RAS IAA Minor Planet Database

12538 (1998 OH)

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar ⇩ Gaia
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 Period1.91401747 yr ± 1.35e-09
Physical Parameters
H (abs. magnitude)15.96
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.272″
Uncertainty0
Orbit TypeApollo
MOID0.029256 AU
Observations Used10512
Radar Obs Used1
Gaia Obs Used113
Oppositions14
Arc Total1987-2025
First Observation Used1987-08-22
Last Observation Used2025-12-01
Observations (19002)
Date Type RA Dec Mag Band Observatory
2019-06-13 07:51:09 C 14 02 53.194 +39 30 26.48 – U F52
2019-06-13 08:08:52 C 14 02 57.193 +39 30 14.29 – U F52
2019-06-13 08:26:39 C 14 03 01.191 +39 30 01.98 – U F52
2019-06-14 06:22:40 C 14 08 02.11 +39 14 53.6 – V 703
2019-06-14 06:30:32 C 14 08 03.79 +39 14 47.1 – V 703
2019-06-14 06:46:16 C 14 08 07.26 +39 14 36.1 – V 703
2019-06-16 08:35:21 C 14 18 46.15 +38 38 34.5 – V T08
2019-06-16 08:40:00 C 14 18 47.06 +38 38 30.7 – V T08
2019-06-16 08:48:02 C 14 18 48.63 +38 38 24.5 – V T08
2019-06-16 09:03:24 C 14 18 51.65 +38 38 12.7 – V T08
2019-06-16 22:09:28 n 14 21 30.25 +38 28 08.0 – V Z43
2019-06-16 22:25:05 n 14 21 33.27 +38 27 55.9 – V Z43
2019-06-16 22:39:42 n 14 21 36.09 +38 27 44.9 – V Z43
2019-06-16 22:51:52 n 14 21 38.44 +38 27 35.3 – V Z43
2019-06-16 23:04:35 n 14 21 40.91 +38 27 25.1 – V Z43
2019-06-16 23:18:52 n 14 21 43.66 +38 27 13.5 – V Z43
2019-06-16 23:52:04 C 14 21 50.14 +38 26 46.1 – V Z80
2019-06-16 23:54:34 C 14 21 50.58 +38 26 44.4 – V Z80
2019-06-16 23:57:05 C 14 21 51.11 +38 26 42.0 – V Z80
2019-06-18 10:29:47 S 14 28 30.62 +38 00 03.8 – L C51
2019-06-18 13:38:07 S 14 29 05.58 +37 57 35.6 – L C51
2019-06-18 16:46:25 S 14 29 40.35 +37 55 07.0 – L C51
2019-06-18 19:54:56 S 14 30 14.96 +37 52 37.5 – L C51
2019-06-19 02:11:45 S 14 31 23.61 +37 47 37.8 – L C51
2019-06-19 05:20:04 S 14 31 57.64 +37 45 07.9 – L C51
2019-06-19 06:43:24 C 14 32 11.06 +37 44 00.4 – V 719
2019-06-19 08:28:23 S 14 32 31.48 +37 42 37.4 – L C51
2019-06-19 08:28:34 S 14 32 31.50 +37 42 37.2 – L C51
2019-06-19 11:36:53 S 14 33 05.165 +37 40 06.38 – L C51
2019-06-19 14:45:12 S 14 33 38.647 +37 37 35.22 – L C51
2019-06-19 19:27:46 S 14 34 28.550 +37 33 47.70 – L C51
2019-06-19 19:27:57 S 14 34 28.553 +37 33 47.30 – L C51
2019-06-19 21:02:01 S 14 34 45.115 +37 32 31.70 – L C51
2019-06-19 22:36:16 S 14 35 01.622 +37 31 15.49 – L C51
2019-06-20 00:10:31 S 14 35 18.096 +37 29 59.28 – L C51
2019-06-20 01:44:35 S 14 35 34.49 +37 28 43.4 – L C51
2019-06-20 03:18:50 S 14 35 50.87 +37 27 26.9 – L C51
2019-06-20 04:53:05 S 14 36 07.21 +37 26 10.3 – L C51
2019-06-20 06:27:09 S 14 36 23.48 +37 24 54.2 – L C51
2019-06-20 07:47:47 C 14 36 36.57 +37 23 55.8 – V T08
2019-06-20 07:53:05 C 14 36 37.45 +37 23 51.6 – V T08
2019-06-20 08:01:24 S 14 36 39.74 +37 23 37.7 – L C51
2019-06-20 08:02:25 C 14 36 39.00 +37 23 43.8 – V T08
2019-06-20 08:20:23 C 14 36 41.94 +37 23 28.9 – V T08
2019-06-20 09:35:40 S 14 36 55.93 +37 22 21.0 – L C51
2019-06-20 11:09:54 S 14 37 12.110 +37 21 04.14 – L C51
2019-06-20 12:43:57 S 14 37 28.22 +37 19 47.7 – L C51
2019-06-20 14:18:13 S 14 37 44.29 +37 18 30.8 – L C51
2019-06-20 15:52:28 S 14 38 00.31 +37 17 14.0 – L C51
2019-06-20 17:26:32 S 14 38 16.32 +37 15 57.3 – L C51
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2019-05-14 21:19:00 24772.1678 4 Hz 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)