2021 XS4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1890172000
Semi-major axis (a)0.9956456000 AU
Inclination (i)14.58573000°
Long. of Asc. Node (Ω)257.80825000°
Arg. of Perihelion (ω)289.29153000°
Mean Anomaly (M)261.20412000°
Mean Motion (n)0.9920804300°/day
Perihelion dist (q)0.80745150 AU
Aphelion dist (Q)1.18383970 AU
Orbital Period0.99347550 yr
Physical Parameters
H (abs. magnitude)25.98
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.180″
Uncertainty7
Orbit TypeAten
MOID0.030748 AU
Observations Used23
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-12
Observations (24)
Date Type RA Dec Mag Band Observatory
2021-12-08 07:50:26 C 06 01 15.27 +30 30 15.4 V G96
2021-12-08 07:58:02 C 06 01 13.34 +30 28 46.2 V G96
2021-12-08 08:05:36 C 06 01 11.37 +30 27 15.7 V G96
2021-12-08 08:13:12 C 06 01 09.40 +30 25 45.4 V G96
2021-12-08 09:56:48 C 06 00 42.59 +30 04 53.4 V I52
2021-12-08 09:57:17 C 06 00 42.46 +30 04 47.1 V I52
2021-12-08 09:57:46 C 06 00 42.35 +30 04 40.8 V I52
2021-12-09 02:30:40 C 05 57 29.49 +26 31 21.8 X W34
2021-12-09 02:43:28 C 05 57 26.28 +26 28 30.4 X W34
2021-12-09 02:56:57 C 05 57 22.91 +26 25 28.8 X W34
2021-12-09 05:50:07 C 05 56 42.96 +25 45 55.4 V I52
2021-12-09 05:50:56 C 05 56 42.74 +25 45 44.2 V I52
2021-12-09 05:51:44 C 05 56 42.51 +25 45 33.0 V I52
2021-12-10 23:33:06 C 05 46 47.16 +14 27 33.2 V Z80
2021-12-10 23:52:03 C 05 46 41.37 +14 21 35.0 V Z99
2021-12-10 23:52:19 C 05 46 41.45 +14 21 36.1 V Z80
2021-12-10 23:54:03 C 05 46 40.81 +14 20 57.6 V Z99
2021-12-10 23:56:08 C 05 46 40.17 +14 20 19.2 V Z99
2021-12-10 23:58:16 C 05 46 39.53 +14 19 38.9 V Z99
2021-12-11 00:00:22 C 05 46 38.88 +14 18 59.8 V Z99
2021-12-12 06:06:23 C 05 38 40.97 +04 10 30.0 V I52
2021-12-12 06:06:37 C 05 38 40.91 +04 10 24.7 V I52
2021-12-12 06:08:25 C 05 38 40.30 +04 09 45.8 V I52
2021-12-12 06:10:47 C 05 38 39.49 +04 08 54.5 V I52