2021 XJ4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7246968000
Semi-major axis (a)2.2171916000 AU
Inclination (i)6.95763000°
Long. of Asc. Node (Ω)74.62929000°
Arg. of Perihelion (ω)88.24042000°
Mean Anomaly (M)57.38886000°
Mean Motion (n)0.2985377300°/day
Perihelion dist (q)0.61039990 AU
Aphelion dist (Q)3.82398330 AU
Orbital Period3.30145090 yr
Physical Parameters
H (abs. magnitude)27.32
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.480″
Uncertainty8
Orbit TypeApollo
MOID0.007478 AU
Observations Used15
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-09
Observations (16)
Date Type RA Dec Mag Band Observatory
2021-12-08 06:17:53 C 04 03 54.74 +25 16 04.7 V G96
2021-12-08 06:25:59 C 04 03 44.79 +25 17 40.3 V G96
2021-12-08 06:42:10 C 04 03 24.58 +25 20 53.9 V G96
2021-12-09 02:57:31 C 03 26 28.31 +31 04 42.7 u H21
2021-12-09 03:00:34 C 03 26 19.24 +31 05 55.5 u H21
2021-12-09 03:06:42 C 03 26 01.02 +31 08 21.7 u H21
2021-12-09 03:09:46 C 03 25 51.86 +31 09 35.3 u H21
2021-12-09 03:12:49 C 03 25 42.72 +31 10 48.3 u H21
2021-12-09 03:15:26 C 03 25 34.90 +31 11 50.9 u H21
2021-12-09 03:52:55 C 03 23 51.97 +31 27 34.2 V I52
2021-12-09 03:54:02 C 03 23 48.46 +31 28 02.2 V I52
2021-12-09 03:55:10 C 03 23 44.96 +31 28 29.8 V I52
2021-12-09 03:56:17 C 03 23 41.46 +31 28 57.9 V I52
2021-12-09 04:29:31 C 03 21 40.99 +31 42 29.4 Z W33
2021-12-09 04:44:20 C 03 20 53.00 +31 48 37.9 Z W33
2021-12-09 04:59:15 C 03 20 03.99 +31 54 47.3 Z W33