2018 XR4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3582155000
Semi-major axis (a)1.1450387000 AU
Inclination (i)10.23775000°
Long. of Asc. Node (Ω)84.40634000°
Arg. of Perihelion (ω)88.41194000°
Mean Anomaly (M)187.24081000°
Mean Motion (n)0.8044032500°/day
Perihelion dist (q)0.73486810 AU
Aphelion dist (Q)1.55520930 AU
Orbital Period1.22526560 yr
Physical Parameters
H (abs. magnitude)26.80
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.370″
Uncertainty6
Orbit TypeApollo
MOID0.001590 AU
Observations Used27
Oppositions1
Arc Total
First Observation Used
Last Observation Used2018-12-15
Observations (27)
Date Type RA Dec Mag Band Observatory
2018-12-14 06:24:18 C 03 56 56.65 -00 59 43.9 V G96
2018-12-14 06:33:02 C 03 56 46.45 -00 59 26.5 V G96
2018-12-14 06:41:46 C 03 56 36.00 -00 59 08.4 V G96
2018-12-14 06:50:32 C 03 56 25.58 -00 58 50.4 V G96
2018-12-14 08:38:47 C 03 54 15.26 -00 55 08.8 V H01
2018-12-14 08:51:19 C 03 54 00.73 -00 54 35.1 V I52
2018-12-14 08:53:27 C 03 53 58.14 -00 54 30.8 V I52
2018-12-14 08:54:18 C 03 53 56.61 -00 54 35.8 V H01
2018-12-14 08:54:32 C 03 53 56.85 -00 54 28.3 V I52
2018-12-14 09:03:49 C 03 53 45.15 -00 54 15.3 V H01
2018-12-14 09:11:36 C 03 53 35.78 -00 53 58.2 V H01
2018-12-14 09:30:41 C 03 53 13.14 -00 53 09.7 V I52
2018-12-14 09:31:45 C 03 53 11.86 -00 53 07.6 V I52
2018-12-14 09:32:49 C 03 53 10.55 -00 53 05.2 V I52
2018-12-14 09:33:52 C 03 53 09.26 -00 53 02.2 V I52
2018-12-14 19:04:56 C 03 41 29.21 -00 31 21.5 V L01
2018-12-14 19:06:13 C 03 41 27.35 -00 31 17.9 V L01
2018-12-14 19:07:21 C 03 41 25.70 -00 31 15.3 V L01
2018-12-14 19:10:04 C 03 41 21.83 -00 31 08.4 V L01
2018-12-14 19:10:38 C 03 41 21.02 -00 31 06.8 V L01
2018-12-14 22:24:07 C 03 36 32.80 -00 22 29.7 V 204
2018-12-14 22:40:13 C 03 36 07.92 -00 21 44.6 V 204
2018-12-14 22:56:35 C 03 35 42.52 -00 20 58.8 V 204
2018-12-15 06:06:23 C 03 24 21.42 +00 01 49.0 V I52
2018-12-15 06:07:29 C 03 24 19.44 +00 01 52.4 V I52
2018-12-15 06:08:33 C 03 24 17.52 +00 01 56.4 V I52
2018-12-15 06:09:38 C 03 24 15.62 +00 01 59.9 V I52