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
2021-01-03 16:34:08 S 06 49 06.835 -55 08 27.24 – V C57
2021-01-03 16:34:08 s 1 +113085.81 3 +312271.55 4860.0 – C57
2021-01-03 16:44:08 S 06 49 06.202 -55 08 50.64 – V C57
2021-01-03 16:44:08 s 1 +112806.73 4 +312706.24 7780.0 – C57
2021-01-03 16:54:08 S 06 49 05.522 -55 09 13.93 – V C57
2021-01-03 16:54:08 s 1 +112527.21 7 +313139.72 100.0 – C57
2021-01-03 17:04:08 S 06 49 04.975 -55 09 37.69 – V C57
2021-01-03 17:04:08 s 1 +112247.26 4 +313571.98 1840.0 – C57
2021-01-03 17:14:08 S 06 49 04.344 -55 10 01.38 – V C57
2021-01-03 17:14:08 s 1 +111966.87 7 +314003.02 2990.0 – C57
2021-01-03 17:24:08 S 06 49 03.631 -55 10 24.92 – V C57
2021-01-03 17:24:08 s 1 +111686.05 9 +314432.85 3550.0 – C57
2021-01-03 17:34:08 S 06 49 03.012 -55 10 47.68 – V C57
2021-01-03 17:34:08 s 1 +111404.81 2 +314861.47 3540.0 – C57
2021-01-03 17:44:08 S 06 49 02.455 -55 11 11.47 – V C57
2021-01-03 17:44:08 s 1 +111123.13 9 +315288.88 2950.0 – C57
2021-01-03 17:54:08 S 06 49 01.776 -55 11 35.20 – V C57
2021-01-03 17:54:08 s 1 +110841.04 1 +315715.08 1780.0 – C57
2021-01-03 18:04:08 S 06 49 01.032 -55 11 58.09 – V C57
2021-01-03 18:04:08 s 1 +110558.52 1 +316140.07 50.0 – C57
2021-01-03 18:14:08 S 06 49 00.552 -55 12 21.53 – V C57
2021-01-03 18:14:08 s 1 +110275.58 1 +316563.86 7740.0 – C57
2021-01-03 18:24:08 S 06 48 59.772 -55 12 45.07 – V C57
2021-01-03 18:24:08 s 1 +109992.22 3 +316986.44 4880.0 – C57
2021-01-03 18:34:08 S 06 48 59.182 -55 13 08.51 – V C57
2021-01-03 18:34:08 s 1 +109708.45 0 +317407.83 1450.0 – C57
2021-01-03 18:44:08 S 06 48 58.632 -55 13 32.48 – V C57
2021-01-03 18:44:08 s 1 +109424.26 4 +317828.01 7460.0 – C57
2021-01-03 18:54:08 S 06 48 57.919 -55 13 55.67 – V C57
2021-01-03 18:54:08 s 1 +109139.66 7 +318246.99 2920.0 – C57
2021-01-03 19:04:08 S 06 48 57.286 -55 14 18.60 – V C57
2021-01-03 19:04:08 s 1 +108854.66 1 +318664.78 7830.0 – C57
2021-01-03 19:14:08 S 06 48 56.762 -55 14 42.04 – V C57
2021-01-03 19:14:08 s 1 +108569.24 9 +319081.37 2190.0 – C57
2021-01-03 19:24:08 S 06 48 56.050 -55 15 04.72 – V C57
2021-01-03 19:24:08 s 1 +108283.43 2 +319496.77 6000.0 – C57
2021-01-03 19:34:08 S 06 48 55.327 -55 15 29.20 – V C57
2021-01-03 19:34:08 s 1 +107997.21 2 +319910.97 9270.0 – C57
2021-01-03 19:44:08 S 06 48 54.814 -55 15 51.59 – V C57
2021-01-03 19:44:08 s 1 +107710.59 3 +320323.99 2000.0 – C57
2021-01-03 19:54:08 S 06 48 54.113 -55 16 16.39 – V C57
2021-01-03 19:54:08 s 1 +107423.57 6 +320735.81 4190.0 – C57
2021-01-03 20:04:08 S 06 48 53.412 -55 16 39.72 – V C57
2021-01-03 20:04:08 s 1 +107136.16 2 +321146.45 5850.0 – C57
2021-01-03 20:14:08 S 06 48 52.802 -55 17 02.76 – V C57
2021-01-03 20:14:08 s 1 +106848.35 5 +321555.91 6980.0 – C57
2021-01-03 20:24:08 S 06 48 52.169 -55 17 26.05 – V C57
2021-01-03 20:24:08 s 1 +106560.15 7 +321964.18 7580.0 – C57
2021-01-03 20:34:08 S 06 48 51.600 -55 17 49.99 – V C57
2021-01-03 20:34:08 s 1 +106271.56 9 +322371.27 7650.0 – 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)