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
2021-07-01 14:54:00 S 19 22 04.049 +37 29 10.97 – V C57
2021-07-01 14:54:00 s 1 -19036.831 0 +403527.92 4780.0 – C57
2021-07-01 15:14:00 S 19 22 02.746 +37 29 09.64 – V C57
2021-07-01 15:14:00 s 1 -19752.937 0 +403530.77 8810.0 – C57
2021-07-01 15:24:00 S 19 22 01.788 +37 29 05.75 – V C57
2021-07-01 15:24:00 s 1 -20110.939 0 +403530.89 470.0 – C57
2021-07-01 15:34:00 S 19 22 01.248 +37 29 06.97 – V C57
2021-07-01 15:34:00 s 1 -20468.906 0 +403530.13 1880.0 – C57
2021-07-01 15:44:00 S 19 22 00.204 +37 29 05.60 – V C57
2021-07-01 15:44:00 s 1 -20826.838 0 +403528.50 3050.0 – C57
2021-07-01 15:54:00 S 19 21 59.434 +37 29 03.23 – V C57
2021-07-01 15:54:00 s 1 -21184.733 0 +403525.99 3970.0 – C57
2021-07-01 16:24:00 S 19 21 57.346 +37 29 00.74 – V C57
2021-07-01 16:24:00 s 1 -22258.191 0 +403513.24 5210.0 – C57
2021-07-01 16:34:00 S 19 21 56.467 +37 28 59.92 – V C57
2021-07-01 16:34:00 s 1 -22615.933 0 +403507.25 5120.0 – C57
2021-07-01 17:04:00 S 19 21 54.379 +37 28 55.96 – V C57
2021-07-01 17:04:00 s 1 -23688.912 0 +403484.02 3260.0 – C57
2021-07-01 17:14:00 S 19 21 53.650 +37 28 53.80 – V C57
2021-07-01 17:14:00 s 1 -24046.487 0 +403474.53 2110.0 – C57
2021-07-01 17:24:00 S 19 21 52.932 +37 28 54.91 – V C57
2021-07-01 17:24:00 s 1 -24404.018 0 +403464.17 690.0 – C57
2021-07-01 17:34:00 S 19 21 52.231 +37 28 52.61 – V C57
2021-07-01 17:34:00 s 1 -24761.506 0 +403452.94 9010.0 – C57
2021-07-01 17:44:00 S 19 21 51.751 +37 28 47.14 – V C57
2021-07-01 17:44:00 s 1 -25118.948 0 +403440.84 7040.0 – C57
2021-07-01 17:54:00 S 19 21 50.959 +37 28 52.50 – V C57
2021-07-01 17:54:00 s 1 -25476.344 0 +403427.86 4810.0 – C57
2021-07-01 19:24:00 S 19 21 44.522 +37 28 36.70 – V C57
2021-07-01 19:24:00 s 1 -28690.719 0 +403271.86 1900.0 – C57
2021-07-02 00:14:00 S 19 21 22.805 +37 28 15.56 – V C57
2021-07-02 00:14:00 s 1 -39015.688 0 +402289.60 3130.0 – C57
2021-07-02 01:54:00 S 19 21 15.948 +37 27 59.80 – V C57
2021-07-02 01:54:00 s 1 -42562.087 0 +401781.37 8720.0 – C57
2021-07-02 03:24:00 S 19 21 09.521 +37 27 44.39 – V C57
2021-07-02 03:24:00 s 1 -45746.658 0 +401249.70 7670.0 – C57
2021-07-02 04:04:00 S 19 21 06.125 +37 27 40.00 – V C57
2021-07-02 04:04:00 s 1 -47159.679 0 +400990.83 6670.0 – C57
2021-07-02 04:34:00 S 19 21 04.529 +37 27 35.93 – V C57
2021-07-02 04:34:00 s 1 -48218.454 0 +400787.55 4050.0 – C57
2021-07-02 05:44:00 S 19 20 59.194 +37 27 31.46 – V C57
2021-07-02 05:44:00 s 1 -50685.495 0 +400282.87 9600.0 – C57
2021-07-02 05:54:00 S 19 20 57.984 +37 27 28.01 – V C57
2021-07-02 05:54:00 s 1 -51037.525 0 +400207.29 1500.0 – C57
2021-07-02 06:04:00 S 19 20 57.574 +37 27 29.34 – V C57
2021-07-02 06:04:00 s 1 -51389.452 0 +400130.86 2960.0 – C57
2021-07-02 06:34:00 S 19 20 55.709 +37 27 22.64 – V C57
2021-07-02 06:34:00 s 1 -52444.605 0 +399896.33 4660.0 – C57
2021-07-02 08:35:40 C 19 21 01.78 +37 36 26.0 – q U69
2021-07-02 09:04:00 S 19 20 44.489 +37 27 03.20 – V 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)