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
2020-12-25 20:24:08 S 06 57 49.459 -46 56 17.95 – V C57
2020-12-25 20:24:08 s 1 -113817.87 8 +373244.48 9650.0 – C57
2020-12-25 20:34:08 S 06 57 49.094 -46 56 42.76 – V C57
2020-12-25 20:34:08 s 1 -114116.89 7 +373013.06 3490.0 – C57
2020-12-25 20:44:08 S 06 57 48.677 -46 57 07.31 – V C57
2020-12-25 20:44:08 s 1 -114415.63 9 +372780.75 6890.0 – C57
2020-12-25 20:54:08 S 06 57 48.089 -46 57 32.08 – V C57
2020-12-25 20:54:08 s 1 -114714.10 2 +372547.54 9850.0 – C57
2020-12-25 21:04:08 S 06 57 47.638 -46 57 56.63 – V C57
2020-12-25 21:04:08 s 1 -115012.28 5 +372313.43 2360.0 – C57
2020-12-25 21:14:08 S 06 57 47.191 -46 58 21.00 – V C57
2020-12-25 21:14:08 s 1 -115310.18 8 +372078.42 4430.0 – C57
2020-12-25 21:24:08 S 06 57 46.798 -46 58 45.08 – V C57
2020-12-25 21:24:08 s 1 -115607.80 9 +371842.51 6060.0 – C57
2020-12-25 21:34:08 S 06 57 46.243 -46 59 09.24 – V C57
2020-12-25 21:34:08 s 1 -115905.14 6 +371605.70 7230.0 – C57
2020-12-25 21:44:08 S 06 57 45.737 -46 59 34.44 – V C57
2020-12-25 21:44:08 s 1 -116202.20 0 +371367.99 7960.0 – C57
2020-12-25 21:54:08 S 06 57 45.418 -46 59 56.98 – V C57
2020-12-25 21:54:08 s 1 -116498.96 9 +371129.38 8240.0 – C57
2020-12-25 22:04:08 S 06 57 44.918 -47 00 22.54 – V C57
2020-12-25 22:04:08 s 1 -116795.45 2 +370889.86 8070.0 – C57
2020-12-25 22:14:08 S 06 57 44.436 -47 00 47.05 – V C57
2020-12-25 22:14:08 s 1 -117091.64 7 +370649.44 7450.0 – C57
2020-12-25 22:24:08 S 06 57 43.836 -47 01 11.21 – V C57
2020-12-25 22:24:08 s 1 -117387.55 5 +370408.12 6370.0 – C57
2020-12-25 22:34:08 S 06 57 43.474 -47 01 35.72 – V C57
2020-12-25 22:34:08 s 1 -117683.17 4 +370165.90 4830.0 – C57
2020-12-25 22:44:08 S 06 57 43.037 -47 01 58.84 – V C57
2020-12-25 22:44:08 s 1 -117978.50 2 +369922.78 2840.0 – C57
2020-12-25 22:54:08 S 06 57 42.540 -47 02 24.18 – V C57
2020-12-25 22:54:08 s 1 -118273.53 9 +369678.75 390.0 – C57
2020-12-25 23:04:08 S 06 57 42.122 -47 02 48.23 – V C57
2020-12-25 23:04:08 s 1 -118568.28 4 +369433.82 7480.0 – C57
2020-12-25 23:14:08 S 06 57 41.770 -47 03 12.92 – V C57
2020-12-25 23:14:08 s 1 -118862.73 5 +369187.98 4110.0 – C57
2020-12-25 23:24:08 S 06 57 41.232 -47 03 37.26 – V C57
2020-12-25 23:24:08 s 1 -119156.89 2 +368941.24 270.0 – C57
2020-12-25 23:34:08 S 06 57 40.702 -47 04 01.31 – V C57
2020-12-25 23:34:08 s 1 -119450.75 3 +368693.59 5970.0 – C57
2020-12-25 23:44:08 S 06 57 40.246 -47 04 25.64 – V C57
2020-12-25 23:44:08 s 1 -119744.31 8 +368445.04 1200.0 – C57
2020-12-25 23:54:08 S 06 57 39.816 -47 04 48.86 – V C57
2020-12-25 23:54:08 s 1 -120037.58 5 +368195.58 5960.0 – C57
2020-12-26 00:04:08 S 06 57 39.394 -47 05 13.81 – V C57
2020-12-26 00:04:08 s 1 -120330.55 3 +367945.21 250.0 – C57
2020-12-26 00:14:08 S 06 57 38.818 -47 05 38.26 – V C57
2020-12-26 00:14:08 s 1 -120623.22 2 +367693.94 4070.0 – C57
2020-12-26 00:24:08 S 06 57 38.304 -47 06 02.74 – V C57
2020-12-26 00:24:08 s 1 -120915.58 9 +367441.77 7420.0 – 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)