2018 HD

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4780119000
Semi-major axis (a)1.9372637000 AU
Inclination (i)4.63806000°
Long. of Asc. Node (Ω)205.85260000°
Arg. of Perihelion (ω)341.49867000°
Mean Anomaly (M)300.05226000°
Mean Motion (n)0.3655282500°/day
Perihelion dist (q)1.01122860 AU
Aphelion dist (Q)2.86329880 AU
Orbital Period2.69639250 yr
Physical Parameters
H (abs. magnitude)27.30
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.450″
Uncertainty7
Orbit TypeAmor
MOID0.018977 AU
Observations Used21
Oppositions1
Arc Total
First Observation Used
Last Observation Used2018-04-22
Observations (21)
Date Type RA Dec Mag Band Observatory
2018-04-16 08:37:29 C 14 13 21.80 -12 32 48.6 U G96
2018-04-16 08:44:56 C 14 13 29.46 -12 32 26.5 U G96
2018-04-16 08:55:38 C 14 13 40.36 -12 31 55.7 U G96
2018-04-16 09:03:05 C 14 13 47.96 -12 31 34.4 U G96
2018-04-16 10:18:35 C 14 15 05.22 -12 27 52.7 U I52
2018-04-16 10:19:11 C 14 15 05.90 -12 27 49.6 U I52
2018-04-16 10:19:46 C 14 15 06.47 -12 27 48.2 U I52
2018-04-16 10:20:22 C 14 15 07.22 -12 27 46.9 U I52
2018-04-17 00:13:30 C 14 29 39.86 -11 49 31.4 q I93
2018-04-17 00:29:35 C 14 29 54.68 -11 48 46.8 q I93
2018-04-17 00:45:32 C 14 30 09.29 -11 48 03.0 q I93
2018-04-18 07:58:14 C 14 57 19.73 -10 25 19.1 U H01
2018-04-18 08:03:18 C 14 57 23.33 -10 25 06.6 U H01
2018-04-18 08:17:06 C 14 57 33.95 -10 24 28.7 U I52
2018-04-18 08:18:48 C 14 57 34.28 -10 24 28.5 U H01
2018-04-18 08:19:52 C 14 57 35.95 -10 24 20.8 U I52
2018-04-18 08:25:25 C 14 57 39.90 -10 24 06.9 U I52
2018-04-18 08:28:34 C 14 57 41.18 -10 24 04.3 U H01
2018-04-22 10:48:15 C 15 51 16.18 -07 14 21.4 o 291
2018-04-22 10:55:07 C 15 51 18.49 -07 14 11.0 o 291
2018-04-22 11:01:59 C 15 51 20.78 -07 14 00.8 o 291