IAA RAS IAA Minor Planet Database

2018 OB1

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6908701092 ± 2.31e-06
Semi-major axis (a)3.1778032685 AU ± 2.31e-05
Inclination (i)4.33768786° ± 1.06e-05
Long. of Asc. Node (Ω)174.59202318° ± 5.93e-05
Arg. of Perihelion (ω)225.09318979° ± 5.43e-05
Mean Anomaly (M)91.48243776° ± 5.01e-03
Mean Motion (n)0.1739889892°/day ± 1.89e-06
Perihelion dist (q)0.98235398 AU ± 1.02e-05
Aphelion dist (Q)5.37325256 AU ± 3.97e-05
Orbital Period5.66487735 yr ± 6.16e-05
Physical Parameters
H (abs. magnitude)20.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.290″
Uncertainty1
Orbit TypeApollo
MOID0.032333 AU
Observations Used70
Oppositions1
Arc Total2018-2019
First Observation Used2018-07-11
Last Observation Used2019-01-12
Observations (70)
Date Type RA Dec Mag Band Observatory
2018-07-11 14:07:39 C 23 11 49.659 +00 45 28.01 – V F51
2018-07-11 14:22:20 C 23 11 50.971 +00 45 37.11 – V F51
2018-07-13 13:48:03 C 23 16 17.055 +01 14 40.56 – V F51
2018-07-13 14:03:15 C 23 16 18.440 +01 14 49.90 – V F51
2018-07-13 14:18:29 C 23 16 19.850 +01 14 59.67 – V F51
2018-07-16 13:23:39 C 23 23 14.802 +01 59 53.94 – V F52
2018-07-16 13:53:06 C 23 23 17.623 +02 00 12.62 – V F52
2018-07-16 14:12:19 C 23 23 19.516 +02 00 25.43 – V F52
2018-07-19 13:22:03 C 23 30 37.326 +02 47 10.17 – V F52
2018-07-19 13:53:30 C 23 30 40.525 +02 47 31.31 – V F52
2018-07-19 14:09:38 C 23 30 42.183 +02 47 42.13 – V F52
2018-07-20 12:28:00 C 23 33 04.951 +03 02 45.35 – V F52
2018-07-20 12:56:43 C 23 33 07.915 +03 03 04.82 – V F52
2018-07-20 13:11:18 C 23 33 09.431 +03 03 14.87 – V F52
2018-07-23 13:14:13 C 23 41 08.648 +03 53 16.45 – U F52
2018-07-23 13:29:26 C 23 41 10.315 +03 53 27.34 – U F52
2018-07-23 13:46:51 C 23 41 12.229 +03 53 39.54 – U F52
2018-07-23 14:02:41 C 23 41 13.995 +03 53 50.95 – U F52
2018-07-24 08:11:07 C 23 43 20.24 +04 06 45.8 – o 291
2018-07-24 08:50:10 C 23 43 24.69 +04 07 14.4 – o 291
2018-07-25 08:34:04 C 23 46 12.19 +04 24 22.9 – u H21
2018-07-25 08:55:39 C 23 46 14.68 +04 24 38.6 – u H21
2018-07-25 11:04:13 C 23 46 29.92 +04 26 14.4 – o 695
2018-07-25 11:11:17 C 23 46 30.73 +04 26 19.5 – o 695
2018-08-05 10:16:59 C 00 22 46.05 +07 56 23.8 – o 291
2018-08-05 10:29:55 C 00 22 48.07 +07 56 34.7 – o 291
2018-08-05 10:42:49 C 00 22 50.05 +07 56 46.5 – o 291
2018-09-04 10:28:05 C 03 34 29.33 +18 57 00.1 – V I52
2018-09-04 10:30:57 C 03 34 30.45 +18 57 02.4 – V I52
2018-09-04 10:32:21 C 03 34 30.97 +18 57 02.6 – V I52
2018-09-04 10:33:45 C 03 34 31.48 +18 57 03.8 – V I52
2018-09-05 11:43:22 C 03 44 13.72 +19 09 18.4 – V I52
2018-09-05 11:45:27 C 03 44 14.57 +19 09 19.2 – V I52
2018-09-05 11:47:32 C 03 44 15.32 +19 09 19.9 – V I52
2018-09-05 11:49:38 C 03 44 16.14 +19 09 21.1 – V I52
2018-09-09 09:00:57 C 04 20 51.07 +19 36 43.2 – o 691
2018-09-09 09:10:25 C 04 20 54.75 +19 36 44.7 – o 691
2018-09-09 09:19:50 C 04 20 58.38 +19 36 46.4 – o 691
2018-09-09 10:30:36 C 04 21 25.81 +19 36 56.1 – V G96
2018-09-09 10:37:58 C 04 21 28.64 +19 36 58.5 – V G96
2018-09-09 10:45:20 C 04 21 31.43 +19 36 59.4 – V G96
2018-09-09 10:52:42 C 04 21 34.32 +19 37 00.3 – V G96
2018-09-17 11:48:24 C 05 34 55.96 +19 02 56.6 – o 291
2018-09-17 11:53:27 C 05 34 57.71 +19 02 54.2 – o 291
2018-09-27 11:59:34 C 06 50 41.70 +16 28 38.9 – o 695
2018-09-27 12:06:59 C 06 50 43.64 +16 28 33.7 – o 695
2018-10-10 12:23:38 C 08 00 24.32 +12 29 36.6 – o 291
2018-10-10 12:27:34 C 08 00 25.01 +12 29 33.8 – o 291
2018-10-10 12:31:36 C 08 00 25.72 +12 29 31.6 – o 291
2018-10-17 12:12:33 C 08 27 57.31 +10 33 11.7 – o 291