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
2018-10-17 12:20:06 C 08 27 58.42 +10 33 06.1 o 291
2018-10-18 11:20:46 C 08 31 21.21 +10 18 05.8 V V06
2018-10-18 11:25:30 C 08 31 21.84 +10 18 02.5 V V06
2018-10-18 11:47:09 C 08 31 24.89 +10 17 48.7 V V06
2018-11-04 11:11:55 C 09 19 09.12 +06 30 18.0 o 691
2018-11-04 11:40:05 C 09 19 11.64 +06 30 03.5 o 691
2018-11-04 12:10:28 C 09 19 14.34 +06 29 49.5 o 691
2018-12-17 10:10:04 C 10 03 28.96 +02 44 47.7 u H21
2018-12-17 10:20:43 C 10 03 28.86 +02 44 48.4 u H21
2018-12-17 10:36:09 C 10 03 28.67 +02 44 49.8 u H21
2019-01-07 11:22:05 C 09 47 45.434 +04 49 10.23 U F51
2019-01-07 11:39:03 C 09 47 44.481 +04 49 17.22 U F51
2019-01-07 11:56:04 C 09 47 43.539 +04 49 23.82 U F51
2019-01-07 12:13:06 C 09 47 42.602 +04 49 30.53 U F51
2019-01-11 07:41:55 C 09 42 44.46 +05 27 53.2 u H21
2019-01-11 07:50:41 C 09 42 43.95 +05 27 56.8 u H21
2019-01-11 08:01:47 C 09 42 43.29 +05 28 02.0 u H21
2019-01-12 10:15:35 C 09 41 12.90 +05 39 44.7 o 291
2019-01-12 10:24:12 C 09 41 12.39 +05 39 48.5 o 291
2019-01-12 10:32:50 C 09 41 11.84 +05 39 52.5 o 291