2018 PH21

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6504422000
Semi-major axis (a)1.9043137000 AU
Inclination (i)1.79428000°
Long. of Asc. Node (Ω)188.01993000°
Arg. of Perihelion (ω)226.38176000°
Mean Anomaly (M)252.61475000°
Mean Motion (n)0.3750561800°/day
Perihelion dist (q)0.66566770 AU
Aphelion dist (Q)3.14295970 AU
Orbital Period2.62789340 yr
Physical Parameters
H (abs. magnitude)24.10
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.230″
Uncertainty7
Orbit TypeApollo
MOID0.018646 AU
Observations Used15
Oppositions1
Arc Total
First Observation Used
Last Observation Used2018-08-14
Observations (15)
Date Type RA Dec Mag Band Observatory
2018-08-11 09:59:20 C 20 31 07.838 -09 50 43.80 U F51
2018-08-11 10:16:13 C 20 31 04.537 -09 50 43.25 U F51
2018-08-11 10:33:04 C 20 31 01.239 -09 50 43.15 U F51
2018-08-12 03:53:46 C 20 27 44.99 -09 50 45.8 u H21
2018-08-12 04:11:54 C 20 27 41.25 -09 50 45.4 u H21
2018-08-12 04:27:42 C 20 27 37.99 -09 50 45.6 u H21
2018-08-12 06:15:00 C 20 27 18.772 -09 50 29.41 V 568
2018-08-12 06:16:22 C 20 27 18.482 -09 50 29.40 V 568
2018-08-12 06:17:44 C 20 27 18.197 -09 50 29.42 V 568
2018-08-14 01:59:38 C 20 17 49.50 -09 49 08.6 U 807
2018-08-14 02:08:03 C 20 17 47.39 -09 49 08.8 U 807
2018-08-14 02:18:08 C 20 17 44.91 -09 49 09.1 U 807
2018-08-14 08:20:38 C 20 16 15.39 -09 49 52.6 o 291
2018-08-14 08:23:46 C 20 16 14.63 -09 49 52.7 o 291
2018-08-14 08:26:58 C 20 16 13.82 -09 49 52.7 o 291