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
2019-01-20 07:04:57 C 03 11 35.88 -22 18 55.7 – V T08
2019-01-20 07:14:57 C 03 11 35.91 -22 18 57.3 – V T08
2019-01-20 07:25:37 C 03 11 35.93 -22 18 58.5 – V T08
2019-01-20 07:36:21 C 03 11 35.99 -22 19 00.4 – V T08
2019-01-21 07:52:44 C 03 11 46.27 -22 21 49.6 – V T08
2019-01-21 08:05:26 C 03 11 46.35 -22 21 50.4 – V T08
2019-01-21 08:17:45 C 03 11 46.43 -22 21 52.0 – V T08
2019-01-21 08:30:47 C 03 11 46.50 -22 21 52.5 – V T08
2019-01-22 11:42:11 C 03 12 02.31 -22 24 41.5 – q D29
2019-01-22 12:02:32 C 03 12 02.44 -22 24 43.2 – q D29
2019-01-22 12:22:54 C 03 12 02.60 -22 24 45.0 – q D29
2019-01-24 06:34:25 C 03 12 34.03 -22 28 11.1 – V T08
2019-01-24 06:43:02 C 03 12 34.12 -22 28 11.5 – V T08
2019-01-24 06:52:20 C 03 12 34.23 -22 28 11.9 – V T08
2019-01-24 07:01:39 C 03 12 34.33 -22 28 12.7 – V T08
2019-01-26 09:59:45 C 03 13 24.26 -22 30 57.8 – q E89
2019-01-26 10:24:03 C 03 13 24.62 -22 30 58.8 – q E89
2019-02-01 06:32:46 C 03 16 46.71 -22 33 17.4 – V T08
2019-02-01 06:41:24 C 03 16 46.94 -22 33 17.3 – V T08
2019-02-01 06:49:21 C 03 16 47.15 -22 33 16.9 – V T08
2019-02-01 06:58:40 C 03 16 47.37 -22 33 17.0 – V T08
2019-02-05 06:32:54 C 03 19 56.55 -22 30 27.0 – V T08
2019-02-05 06:38:53 C 03 19 56.75 -22 30 26.8 – V T08
2019-02-05 06:43:32 C 03 19 56.88 -22 30 26.7 – V T08
2019-02-05 06:50:52 C 03 19 57.16 -22 30 26.1 – V T08
2019-02-05 06:54:52 C 03 19 57.27 -22 30 25.8 – V T08
2019-02-05 07:01:30 C 03 19 57.50 -22 30 25.5 – V T08
2019-02-05 07:06:11 C 03 19 57.65 -22 30 25.0 – V T08
2019-02-05 07:13:29 C 03 19 57.88 -22 30 24.7 – V T08
2019-02-13 06:10:13 C 03 28 10.03 -22 16 53.0 – V T08
2019-02-13 06:21:37 C 03 28 10.56 -22 16 51.7 – V T08
2019-02-13 06:32:57 C 03 28 11.07 -22 16 50.8 – V T08
2019-02-13 06:43:37 C 03 28 11.57 -22 16 49.6 – V T08
2019-02-17 06:02:29 C 03 33 09.21 -22 06 59.1 – V T08
2019-02-17 06:15:13 C 03 33 09.84 -22 06 57.0 – V T08
2019-02-17 06:27:11 C 03 33 10.45 -22 06 55.3 – V T08
2019-02-17 06:39:10 C 03 33 11.08 -22 06 54.5 – V T08
2019-02-25 06:02:01 C 03 44 41.83 -21 41 55.4 – V T08
2019-02-25 06:14:02 C 03 44 42.60 -21 41 53.4 – V T08
2019-02-25 06:26:01 C 03 44 43.32 -21 41 51.5 – V T08
2019-02-25 06:36:41 C 03 44 44.01 -21 41 49.9 – V T08
2019-03-01 05:44:23 C 03 51 11.16 -21 26 48.5 – V T08
2019-03-01 05:52:30 C 03 51 11.70 -21 26 47.0 – V T08
2019-03-01 05:56:31 C 03 51 11.99 -21 26 46.4 – V T08
2019-03-01 06:03:55 C 03 51 12.45 -21 26 45.1 – V T08
2019-03-01 06:07:14 C 03 51 12.69 -21 26 44.3 – V T08
2019-03-01 06:14:36 C 03 51 13.19 -21 26 43.0 – V T08
2019-03-01 06:18:37 C 03 51 13.44 -21 26 42.2 – V T08
2019-03-01 06:25:15 C 03 51 13.88 -21 26 41.1 – V T08
2019-03-09 05:45:46 C 04 05 36.65 -20 50 31.3 – V T08
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)