2021 XK4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3023544000
Semi-major axis (a)1.0076636000 AU
Inclination (i)10.87467000°
Long. of Asc. Node (Ω)71.35257000°
Arg. of Perihelion (ω)254.66923000°
Mean Anomaly (M)41.14494000°
Mean Motion (n)0.9743852400°/day
Perihelion dist (q)0.70299210 AU
Aphelion dist (Q)1.31233510 AU
Orbital Period1.01151740 yr
Physical Parameters
H (abs. magnitude)26.42
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.770″
Uncertainty7
Orbit TypeApollo
MOID0.004228 AU
Observations Used20
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-12
Observations (20)
Date Type RA Dec Mag Band Observatory
2021-12-08 04:08:30 C 01 43 04.25 +28 15 52.6 V G96
2021-12-08 04:16:42 C 01 43 07.83 +28 17 03.3 V G96
2021-12-08 04:24:57 C 01 43 11.46 +28 18 12.9 V G96
2021-12-08 04:33:07 C 01 43 15.00 +28 19 22.9 V G96
2021-12-08 06:11:03 C 01 43 57.82 +28 32 58.7 V I52
2021-12-08 06:13:54 C 01 43 59.09 +28 33 22.2 V I52
2021-12-08 06:16:44 C 01 44 00.32 +28 33 45.3 V I52
2021-12-08 06:19:34 C 01 44 01.58 +28 34 08.4 V I52
2021-12-09 00:58:45 C 01 52 38.13 +30 52 19.4 u H21
2021-12-09 01:06:48 C 01 52 41.05 +30 53 13.5 u H21
2021-12-09 01:10:55 C 01 52 42.56 +30 53 40.5 u H21
2021-12-09 01:26:56 C 01 52 48.40 +30 55 27.2 u H21
2021-12-09 01:38:26 C 01 52 57.51 +30 56 52.9 V I52
2021-12-09 01:40:52 C 01 52 58.43 +30 57 09.1 V I52
2021-12-09 01:43:17 C 01 52 59.24 +30 57 25.2 V I52
2021-12-09 01:45:42 C 01 53 00.11 +30 57 41.8 V I52
2021-12-12 02:58:25 C 02 15 43.39 +36 23 24.2 V V06
2021-12-12 03:01:24 C 02 15 43.99 +36 23 33.4 V V06
2021-12-12 03:04:23 C 02 15 44.57 +36 23 43.0 V V06
2021-12-12 03:07:21 C 02 15 45.21 +36 23 51.8 V V06