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
2021-01-01 12:24:08 S 06 51 54.149 -53 02 06.76 – V C57
2021-01-01 12:24:08 s 1 +157186.76 3 +103565.22 8510.0 – C57
2021-01-01 12:34:08 S 06 51 53.755 -53 02 32.06 – V C57
2021-01-01 12:34:08 s 1 +157311.92 1 +104515.41 6990.0 – C57
2021-01-01 12:44:08 S 06 51 53.419 -53 02 57.80 – V C57
2021-01-01 12:44:08 s 1 +157433.79 7 +105463.41 770.0 – C57
2021-01-01 12:54:08 S 06 51 52.994 -53 03 21.85 – V C57
2021-01-01 12:54:08 s 1 +157552.41 9 +106409.24 9910.0 – C57
2021-01-01 13:04:08 S 06 51 52.622 -53 03 45.76 – V C57
2021-01-01 13:04:08 s 1 +157667.81 6 +107352.88 4440.0 – C57
2021-01-01 13:14:08 S 06 51 52.111 -53 04 12.40 – V C57
2021-01-01 13:14:08 s 1 +157780.01 8 +108294.35 4400.0 – C57
2021-01-01 13:24:08 S 06 51 51.744 -53 04 36.19 – V C57
2021-01-01 13:24:08 s 1 +157889.05 3 +109233.64 9840.0 – C57
2021-01-01 13:34:08 S 06 51 51.274 -53 05 00.92 – V C57
2021-01-01 13:34:08 s 1 +157994.95 0 +110170.75 810.0 – C57
2021-01-01 13:44:08 S 06 51 51.031 -53 05 25.55 – V C57
2021-01-01 13:44:08 s 1 +158097.73 5 +111105.70 7330.0 – C57
2021-01-01 13:54:08 S 06 51 50.604 -53 05 51.22 – V C57
2021-01-01 13:54:08 s 1 +158197.43 7 +112038.47 9450.0 – C57
2021-01-01 14:04:08 S 06 51 50.040 -53 06 16.74 – V C57
2021-01-01 14:04:08 s 1 +158294.08 2 +112969.08 7210.0 – C57
2021-01-01 14:14:08 S 06 51 49.560 -53 06 40.18 – V C57
2021-01-01 14:14:08 s 1 +158387.69 8 +113897.52 650.0 – C57
2021-01-01 14:24:08 S 06 51 49.354 -53 07 05.34 – V C57
2021-01-01 14:24:08 s 1 +158478.31 1 +114823.80 9810.0 – C57
2021-01-01 14:54:08 S 06 51 48.034 -53 08 21.05 – V C57
2021-01-01 14:54:08 s 1 +158732.39 2 +117589.69 1980.0 – C57
2021-01-01 15:14:08 S 06 51 47.206 -53 09 10.33 – V C57
2021-01-01 15:14:08 s 1 +158887.23 6 +119422.86 2710.0 – C57
2021-01-01 15:24:08 S 06 51 46.762 -53 09 36.04 – V C57
2021-01-01 15:24:08 s 1 +158960.37 0 +120336.22 6970.0 – C57
2021-01-01 15:34:08 S 06 51 46.414 -53 10 00.70 – V C57
2021-01-01 15:34:08 s 1 +159030.67 8 +121247.44 7210.0 – C57
2021-01-01 15:44:08 S 06 51 46.042 -53 10 24.35 – V C57
2021-01-01 15:44:08 s 1 +159098.18 4 +122156.53 3460.0 – C57
2021-01-01 15:54:08 S 06 51 45.439 -53 10 50.59 – V C57
2021-01-01 15:54:08 s 1 +159162.91 1 +123063.48 5750.0 – C57
2021-01-01 16:04:08 S 06 51 45.079 -53 11 14.46 – V C57
2021-01-01 16:04:08 s 1 +159224.88 4 +123968.29 4130.0 – C57
2021-01-01 16:14:08 S 06 51 44.604 -53 11 39.30 – V C57
2021-01-01 16:14:08 s 1 +159284.12 6 +124870.98 8620.0 – C57
2021-01-01 16:24:08 S 06 51 44.280 -53 12 04.97 – V C57
2021-01-01 16:24:08 s 1 +159340.65 9 +125771.54 9260.0 – C57
2021-01-01 16:34:08 S 06 51 43.997 -53 12 28.40 – V C57
2021-01-01 16:34:08 s 1 +159394.50 7 +126669.98 6090.0 – C57
2021-01-01 16:44:08 S 06 51 43.339 -53 12 54.68 – V C57
2021-01-01 16:44:08 s 1 +159445.69 1 +127566.30 9130.0 – C57
2021-01-01 16:54:08 S 06 51 42.994 -53 13 19.27 – V C57
2021-01-01 16:54:08 s 1 +159494.23 5 +128460.50 8410.0 – C57
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)