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
2019-06-23 14:31:10 S 14 49 21.80 +36 18 30.8 – L C51
2019-06-23 17:39:40 S 14 49 50.40 +36 15 51.7 – L C51
2019-06-23 20:47:58 S 14 50 18.809 +36 13 12.22 – L C51
2019-06-23 23:56:29 S 14 50 47.182 +36 10 32.41 – L C51
2019-06-24 04:56:13 C 14 51 31.23 +36 06 20.1 – V G96
2019-06-24 05:03:40 C 14 51 32.29 +36 06 13.7 – V G96
2019-06-24 05:11:07 C 14 51 33.36 +36 06 07.3 – V G96
2019-06-24 05:18:34 C 14 51 34.43 +36 06 00.8 – V G96
2019-06-24 06:13:07 S 14 51 43.428 +36 05 13.02 – L C51
2019-06-24 06:13:18 S 14 51 43.454 +36 05 12.80 – L C51
2019-06-24 06:30:36 C 14 51 44.74 +36 04 58.4 – V 703
2019-06-24 06:38:28 C 14 51 45.86 +36 04 51.4 – V 703
2019-06-24 06:46:20 C 14 51 46.99 +36 04 44.5 – V 703
2019-06-24 06:54:11 C 14 51 48.15 +36 04 37.9 – V 703
2019-06-24 08:05:10 C 14 51 59.20 +36 03 44.2 – V T08
2019-06-24 08:09:48 C 14 51 59.86 +36 03 40.1 – V T08
2019-06-24 08:18:27 C 14 52 01.08 +36 03 32.5 – V T08
2019-06-24 08:33:05 C 14 52 03.15 +36 03 19.9 – V T08
2019-06-24 09:21:37 S 14 52 11.369 +36 02 33.11 – L C51
2019-06-25 22:01:56 C 14 57 27.52 +35 31 06.2 – V G34
2019-06-25 22:03:57 C 14 57 27.82 +35 31 04.4 – V G34
2019-06-25 22:05:48 C 14 57 28.04 +35 31 03.0 – V G34
2019-06-25 22:09:41 C 14 57 28.59 +35 30 59.4 – V G34
2019-06-25 23:04:26 C 14 57 36.03 +35 30 13.9 – q 160
2019-06-25 23:06:56 C 14 57 36.20 +35 30 12.4 – q 160
2019-06-25 23:09:17 C 14 57 36.72 +35 30 09.2 – q 160
2019-06-26 05:45:23 C 14 58 32.21 +35 24 33.4 – V 719
2019-06-26 06:42:27 C 14 58 39.74 +35 23 40.8 – V 719
2019-06-26 06:50:55 C 14 58 42.051 +35 23 42.25 – U F51
2019-06-26 07:06:59 C 14 58 44.170 +35 23 28.50 – U F51
2019-06-26 07:23:05 C 14 58 46.309 +35 23 14.60 – U F51
2019-06-26 07:39:12 C 14 58 48.432 +35 23 00.68 – U F51
2019-06-26 07:50:31 C 14 58 49.93 +35 22 50.8 – V T05
2019-06-26 07:55:08 C 14 58 50.54 +35 22 46.9 – V T05
2019-06-26 08:03:42 C 14 58 51.67 +35 22 39.2 – V T05
2019-06-26 22:29:03 C 15 00 50.07 +35 10 03.2 – q 160
2019-06-26 22:31:56 C 15 00 50.44 +35 10 00.7 – q 160
2019-06-26 22:34:51 C 15 00 50.83 +35 09 58.0 – q 160
2019-06-27 22:05:04 n 15 03 59.90 +34 49 34.4 – V Z43
2019-06-27 22:19:00 n 15 04 01.68 +34 49 22.3 – V Z43
2019-06-28 22:35:34 C 15 07 10.34 +34 28 12.7 – q 160
2019-06-28 22:37:20 C 15 07 10.55 +34 28 11.9 – q 160
2019-06-28 22:39:20 C 15 07 10.82 +34 28 09.2 – q 160
2019-06-29 06:16:18 C 15 08 09.10 +34 21 33.7 – V 654
2019-06-29 06:22:04 C 15 08 09.80 +34 21 28.5 – V 654
2019-06-30 22:13:28 n 15 13 05.74 +33 46 24.8 – V Z43
2019-06-30 22:22:25 n 15 13 06.80 +33 46 16.7 – V Z43
2019-06-30 22:31:23 n 15 13 07.83 +33 46 09.4 – V Z43
2019-06-30 22:42:56 n 15 13 09.19 +33 45 59.2 – V Z43
2019-06-30 22:54:20 n 15 13 10.52 +33 45 49.0 – V Z43
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)