2021 XX4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5623562000
Semi-major axis (a)1.8331794000 AU
Inclination (i)0.73787000°
Long. of Asc. Node (Ω)268.71688000°
Arg. of Perihelion (ω)231.91801000°
Mean Anomaly (M)195.77336000°
Mean Motion (n)0.3970970200°/day
Perihelion dist (q)0.80227960 AU
Aphelion dist (Q)2.86407920 AU
Orbital Period2.48203240 yr
Physical Parameters
H (abs. magnitude)28.59
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.720″
Uncertainty7
Orbit TypeApollo
MOID0.002036 AU
Observations Used29
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-10
Observations (29)
Date Type RA Dec Mag Band Observatory
2021-12-08 06:25:19 C 04 14 34.38 +27 21 00.8 V G96
2021-12-08 06:33:26 C 04 14 34.56 +27 21 31.0 V G96
2021-12-08 06:41:30 C 04 14 34.71 +27 22 01.7 V G96
2021-12-08 06:49:36 C 04 14 34.87 +27 22 31.6 V G96
2021-12-08 08:24:11 C 04 14 37.20 +27 28 23.7 V V06
2021-12-08 08:27:18 C 04 14 37.33 +27 28 34.9 V V06
2021-12-08 08:33:31 C 04 14 37.55 +27 28 57.6 V V06
2021-12-09 06:23:02 C 04 18 30.79 +29 28 46.1 V G96
2021-12-09 06:24:38 C 04 18 30.95 +29 28 56.7 V G96
2021-12-09 06:26:14 C 04 18 31.15 +29 29 10.4 V G96
2021-12-09 06:27:50 C 04 18 31.25 +29 29 21.6 V G96
2021-12-09 07:01:58 C 04 18 34.96 +29 33 39.9 V G96
2021-12-09 07:03:34 C 04 18 35.11 +29 33 52.7 V G96
2021-12-09 07:05:10 C 04 18 35.28 +29 34 03.6 V G96
2021-12-09 07:06:46 C 04 18 35.45 +29 34 15.2 V G96
2021-12-09 23:11:22 C 04 24 14.44 +32 23 58.5 V 204
2021-12-09 23:24:00 C 04 24 18.86 +32 27 03.5 V 204
2021-12-09 23:36:39 C 04 24 23.29 +32 30 09.9 V 204
2021-12-10 03:38:42 C 04 27 10.68 +33 38 46.3 u H21
2021-12-10 03:41:29 C 04 27 11.98 +33 39 39.7 u H21
2021-12-10 03:44:16 C 04 27 13.28 +33 40 32.4 u H21
2021-12-10 03:45:33 C 04 27 13.93 +33 40 57.2 u H21
2021-12-10 21:33:11 C 04 53 15.92 +43 56 55.6 q J69
2021-12-10 21:36:57 C 04 53 26.93 +44 01 02.5 q J69
2021-12-10 21:48:13 C 04 53 59.94 +44 13 29.1 q J69
2021-12-10 21:55:43 C 04 54 22.36 +44 21 51.6 q J69
2021-12-10 22:56:23 C 04 57 36.25 +45 32 48.6 V Z80
2021-12-10 23:04:17 C 04 58 03.64 +45 42 30.3 V Z80
2021-12-10 23:12:30 C 04 58 32.65 +45 52 43.3 V Z80