2021 XY4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5943171000
Semi-major axis (a)1.8417881000 AU
Inclination (i)7.78480000°
Long. of Asc. Node (Ω)72.37722000°
Arg. of Perihelion (ω)292.68266000°
Mean Anomaly (M)226.95176000°
Mean Motion (n)0.3943161600°/day
Perihelion dist (q)0.74718190 AU
Aphelion dist (Q)2.93639430 AU
Orbital Period2.49953660 yr
Physical Parameters
H (abs. magnitude)23.66
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.570″
Uncertainty7
Orbit TypeApollo
MOID0.004921 AU
Observations Used105
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-21
Observations (108)
Date Type RA Dec Mag Band Observatory
2021-12-09 06:45:20 C 00 54 39.09 +29 29 46.8 V T08
2021-12-09 06:53:23 C 00 55 04.37 +29 32 56.3 V T08
2021-12-09 06:58:13 C 00 55 19.59 +29 34 49.9 V T08
2021-12-09 07:18:35 C 00 56 23.48 +29 42 44.2 V T08
2021-12-09 10:05:37 C 01 05 28.47 +30 43 20.1 r P93
2021-12-09 10:08:21 C 01 05 36.73 +30 44 18.7 r P93
2021-12-09 10:12:27 C 01 05 49.16 +30 45 46.3 r P93
2021-12-09 14:24:47 C 01 18 14.62 +32 08 10.9 V 900
2021-12-09 14:28:34 C 01 18 25.60 +32 09 18.9 V 900
2021-12-09 14:32:22 C 01 18 36.60 +32 10 26.4 V 900
2021-12-09 14:36:10 C 01 18 47.60 +32 11 34.0 V 900
2021-12-09 18:30:49 C 01 30 25.59 +33 18 31.6 Z C95
2021-12-09 18:39:32 C 01 30 49.22 +33 20 52.1 Z C95
2021-12-09 18:48:17 C 01 31 12.87 +33 23 11.6 Z C95
2021-12-09 18:57:02 C 01 31 36.47 +33 25 31.1 Z C95
2021-12-09 19:05:45 C 01 31 59.94 +33 27 49.0 Z C95
2021-12-09 20:36:36 C 01 36 00.51 +33 50 41.8 V L06
2021-12-09 20:37:59 C 01 36 04.13 +33 51 02.0 V L06
2021-12-09 20:39:31 C 01 36 08.17 +33 51 24.7 V L06
2021-12-09 20:40:26 C 01 36 10.59 +33 51 38.1 V L06
2021-12-09 21:02:52 C 01 37 09.53 +33 57 05.1 V 204
2021-12-09 21:06:35 C 01 37 19.22 +33 57 58.5 V 204
2021-12-09 21:08:41 C 01 37 23.82 +33 58 38.9 V L39
2021-12-09 21:10:17 C 01 37 28.93 +33 58 51.8 V 204
2021-12-09 21:11:07 C 01 37 30.18 +33 59 11.8 V L39
2021-12-09 21:13:32 C 01 37 36.54 +33 59 47.8 V L39
2021-12-09 21:14:05 C 01 37 38.86 +33 59 46.4 V 204
2021-12-09 21:15:57 C 01 37 42.77 +34 00 22.2 V L39
2021-12-09 21:17:48 C 01 37 48.58 +34 00 39.4 V 204
2021-12-10 00:24:14 C 01 46 12.87 +34 43 37.3 u H21
2021-12-10 00:26:15 C 01 46 17.91 +34 44 04.1 u H21
2021-12-10 00:28:17 C 01 46 22.94 +34 44 30.8 u H21
2021-12-10 00:30:19 C 01 46 27.97 +34 44 57.6 u H21
2021-12-10 00:32:21 C 01 46 32.99 +34 45 24.2 u H21
2021-12-10 00:34:23 C 01 46 38.02 +34 45 50.9 u H21
2021-12-10 00:36:25 C 01 46 43.05 +34 46 17.6 u H21
2021-12-10 00:38:27 C 01 46 48.07 +34 46 44.2 u H21
2021-12-10 00:40:28 C 01 46 53.09 +34 47 10.6 u H21
2021-12-10 00:42:30 C 01 46 58.09 +34 47 37.2 u H21
2021-12-10 12:59:58 C 02 15 08.31 +36 54 42.3 V 900
2021-12-10 13:04:20 C 02 15 17.14 +36 55 17.0 V 900
2021-12-10 13:08:43 C 02 15 25.91 +36 55 51.8 V 900
2021-12-10 18:03:48 C 02 25 30.47 +37 30 48.5 V L38
2021-12-10 18:06:13 C 02 25 35.00 +37 31 05.6 V L38
2021-12-10 18:08:32 C 02 25 39.39 +37 31 21.9 V L38
2021-12-10 19:16:01 C 02 27 46.63 +37 38 54.6 V J95
2021-12-10 19:19:16 C 02 27 52.59 +37 39 16.5 V J95
2021-12-10 19:22:31 C 02 27 58.53 +37 39 37.8 V J95
2021-12-10 19:25:45 C 02 28 04.47 +37 39 59.4 V J95
2021-12-10 20:42:52 C 02 30 23.58 +37 48 16.1 q J69