2018 HH2

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2275164557 ± 2.92e-05
Semi-major axis (a)1.2482817719 AU ± 5.14e-05
Inclination (i)18.60520346° ± 1.88e-03
Long. of Asc. Node (Ω)42.68405186° ± 1.14e-04
Arg. of Perihelion (ω)115.46268236° ± 2.50e-03
Mean Anomaly (M)191.53844798° ± 1.28e-01
Mean Motion (n)0.7067134113°/day ± 4.37e-05
Perihelion dist (q)0.96427713 AU ± 5.39e-05
Aphelion dist (Q)1.53228642 AU ± 7.29e-05
Orbital Period1.39466192 yr ± 8.61e-05
Physical Parameters
H (abs. magnitude)23.12
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.348″
Uncertainty3
Orbit TypeApollo
MOID0.061150 AU
Observations Used119
Oppositions1
Arc Total2018-2018
First Observation Used2018-04-23
Last Observation Used2018-06-04
Observations (121)
Date Type RA Dec Mag Band Observatory
2018-05-04 04:15:57 C 14 32 52.00 -17 59 33.7 q G48
2018-05-04 10:23:19 C 14 31 01.42 -18 56 38.2 q E08
2018-05-04 10:35:38 C 14 30 57.43 -18 58 36.6 q E08
2018-05-04 10:47:58 C 14 30 53.46 -19 00 35.3 q E08
2018-05-06 09:37:46 C 14 17 27.96 -25 44 07.2 q E08
2018-05-06 09:50:04 C 14 17 24.39 -25 45 44.4 q E08
2018-05-06 10:02:22 C 14 17 20.85 -25 47 22.0 q E08
2018-05-07 09:48:40 C 14 10 57.50 -28 42 49.2 U T05
2018-05-07 10:00:31 C 14 10 54.02 -28 44 10.5 U T05
2018-05-07 10:08:24 C 14 10 51.67 -28 45 05.1 U T05
2018-05-07 10:11:02 C 14 10 51.05 -28 45 23.1 U T05
2018-05-08 07:25:14 C 14 05 30.93 -31 04 42.4 U V06
2018-05-08 07:25:30 C 14 05 30.88 -31 04 43.8 U V06
2018-05-08 07:25:46 C 14 05 30.80 -31 04 46.0 U V06
2018-05-08 07:26:03 C 14 05 30.71 -31 04 46.9 U V06
2018-05-23 02:47:31 C 13 12 26.73 -48 58 22.2 U 807
2018-05-23 02:54:16 C 13 12 26.13 -48 58 30.5 U 807
2018-05-23 03:00:43 C 13 12 25.57 -48 58 38.4 U 807
2018-06-04 02:46:14 C 13 04 09.91 -52 45 36.2 U 807
2018-06-04 02:57:12 C 13 04 09.82 -52 45 40.3 U 807
2018-06-04 03:08:27 C 13 04 09.74 -52 45 45.5 U 807