2021 XE4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5979427000
Semi-major axis (a)2.4579640000 AU
Inclination (i)17.28947000°
Long. of Asc. Node (Ω)76.83084000°
Arg. of Perihelion (ω)328.86750000°
Mean Anomaly (M)15.70547000°
Mean Motion (n)0.2557648100°/day
Perihelion dist (q)0.98824240 AU
Aphelion dist (Q)3.92768560 AU
Orbital Period3.85357020 yr
Physical Parameters
H (abs. magnitude)24.20
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.610″
Uncertainty8
Orbit TypeApollo
MOID0.048640 AU
Observations Used31
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-13
Observations (32)
Date Type RA Dec Mag Band Observatory
2021-11-21 18:49:24 S 04 41 32.851 -66 39 50.33 L C51
2021-11-21 21:57:32 S 04 43 00.358 -66 23 12.62 L C51
2021-12-02 08:38:54 C 06 11 04.22 -14 32 50.9 V 703
2021-12-02 08:47:02 C 06 11 05.85 -14 30 07.1 V 703
2021-12-02 08:55:10 C 06 11 07.58 -14 27 21.7 V 703
2021-12-08 08:20:57 C 06 40 03.43 +26 40 38.9 V G96
2021-12-08 08:28:26 C 06 40 04.36 +26 42 09.8 V G96
2021-12-08 08:43:20 C 06 40 06.20 +26 45 11.1 V G96
2021-12-08 09:36:53 C 06 40 12.85 +26 55 57.1 V I52
2021-12-08 09:37:14 C 06 40 12.91 +26 56 01.5 V I52
2021-12-08 09:37:35 C 06 40 12.94 +26 56 05.6 V I52
2021-12-08 09:37:57 C 06 40 12.98 +26 56 09.9 V I52
2021-12-08 10:35:46 C 06 40 20.24 +27 07 40.8 V I52
2021-12-08 10:36:07 C 06 40 20.29 +27 07 44.8 V I52
2021-12-08 10:36:28 C 06 40 20.33 +27 07 49.1 V I52
2021-12-08 10:36:49 C 06 40 20.39 +27 07 53.4 V I52
2021-12-09 03:24:01 C 06 43 05.64 +30 18 36.6 Z W33
2021-12-09 03:39:49 C 06 43 07.61 +30 21 30.0 Z W33
2021-12-09 03:55:38 C 06 43 09.71 +30 24 23.7 Z W33
2021-12-09 06:13:02 C 06 43 26.88 +30 48 56.2 u H21
2021-12-09 06:15:49 C 06 43 27.21 +30 49 25.9 u H21
2021-12-09 06:18:35 C 06 43 27.56 +30 49 55.3 u H21
2021-12-09 06:21:22 C 06 43 27.85 +30 50 25.0 u H21
2021-12-11 22:24:56 C 06 52 03.67 +40 10 16.3 X 595
2021-12-11 22:59:39 C 06 52 07.08 +40 14 26.2 X 595
2021-12-12 05:35:59 C 06 52 56.79 +41 00 31.1 V I52
2021-12-12 05:48:48 C 06 52 58.09 +41 02 00.9 V I52
2021-12-12 05:50:41 C 06 52 58.31 +41 02 14.0 V I52
2021-12-12 05:53:15 C 06 52 58.59 +41 02 31.9 V I52
2021-12-13 07:29:40 C 06 55 47.13 +43 44 11.1 V I52
2021-12-13 07:35:01 C 06 55 47.54 +43 44 42.4 V I52
2021-12-13 07:35:26 C 06 55 47.57 +43 44 45.1 V I52