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
2021-12-10 20:47:32 C 02 30 31.88 +37 48 44.8 q J69
2021-12-10 20:52:13 C 02 30 40.23 +37 49 13.6 q J69
2021-12-10 20:56:57 C 02 30 48.61 +37 49 42.7 q J69
2021-12-10 21:01:56 C 02 30 57.47 +37 50 13.2 q J69
2021-12-10 21:40:42 C 02 32 05.74 +37 54 02.2 V Z80
2021-12-10 21:47:57 C 02 32 18.44 +37 54 44.5 V Z80
2021-12-10 21:55:12 C 02 32 31.12 +37 55 27.2 V Z80
2021-12-10 22:32:28 C 02 33 36.26 +37 58 51.4 V Z99
2021-12-10 22:34:02 C 02 33 38.96 +37 58 59.9 V Z99
2021-12-10 22:35:35 C 02 33 41.65 +37 59 08.5 V Z99
2021-12-10 22:37:08 C 02 33 44.38 +37 59 17.7 V Z99
2021-12-10 22:38:42 C 02 33 47.07 +37 59 26.4 V Z99
2021-12-10 22:40:15 C 02 33 49.75 +37 59 34.6 V Z99
2021-12-11 18:19:33 C 03 04 01.19 +39 19 38.7 X 595
2021-12-11 18:30:31 C 03 04 14.94 +39 20 11.6 X 595
2021-12-11 18:41:20 C 03 04 28.47 +39 20 43.6 X 595
2021-12-11 19:56:29 C 03 06 02.38 +39 24 20.8 V G14
2021-12-11 20:04:10 C 03 06 11.73 +39 24 40.9 V G14
2021-12-11 20:11:49 C 03 06 21.00 +39 25 01.4 V G14
2021-12-11 23:27:41 C 03 10 11.19 +39 32 42.6 V K83
2021-12-11 23:30:24 C 03 10 14.34 +39 32 48.0 V K83
2021-12-11 23:32:51 C 03 10 17.18 +39 32 53.0 V K83
2021-12-12 02:48:31 C 03 14 16.68 +39 40 23.1 u H21
2021-12-12 02:51:18 C 03 14 19.70 +39 40 28.6 u H21
2021-12-12 02:54:05 C 03 14 22.69 +39 40 34.6 u H21
2021-12-12 02:56:51 C 03 14 25.72 +39 40 40.5 u H21
2021-12-12 02:59:38 C 03 14 28.74 +39 40 46.4 u H21
2021-12-12 03:07:58 C 03 14 37.74 +39 41 03.7 u H21
2021-12-12 03:10:28 C 03 14 40.44 +39 41 08.6 u H21
2021-12-12 03:40:48 C 03 15 18.48 +39 42 24.5 V 703
2021-12-12 03:56:10 C 03 15 34.93 +39 42 56.1 V 703
2021-12-12 04:03:51 C 03 15 43.10 +39 43 10.8 V 703
2021-12-12 04:20:17 C 03 16 00.74 +39 43 47.0 V 291
2021-12-12 04:20:34 C 03 16 01.01 +39 43 47.5 V 291
2021-12-12 04:20:49 C 03 16 01.29 +39 43 48.0 V 291
2021-12-12 20:04:47 C 03 31 42.72 +40 05 35.0 X C95
2021-12-12 20:10:05 C 03 31 47.16 +40 05 41.3 X C95
2021-12-12 20:15:01 C 03 31 51.35 +40 05 47.2 X C95
2021-12-12 20:19:34 C 03 31 55.20 +40 05 52.6 X C95
2021-12-13 00:17:38 C 03 35 25.67 +40 09 37.1 V W34
2021-12-13 00:28:42 C 03 35 34.56 +40 09 49.8 V W34
2021-12-13 00:39:52 C 03 35 43.46 +40 10 03.1 V W34
2021-12-13 01:55:22 C 03 36 43.49 +40 11 06.3 u H21
2021-12-13 01:58:09 C 03 36 45.67 +40 11 09.4 u H21
2021-12-13 02:00:55 C 03 36 47.82 +40 11 11.8 u H21
2021-12-13 02:03:42 C 03 36 50.02 +40 11 15.0 u H21
2021-12-13 02:06:29 C 03 36 52.15 +40 11 17.6 u H21
2021-12-13 02:09:15 C 03 36 54.31 +40 11 20.1 u H21
2021-12-13 05:30:12 C 03 39 30.15 +40 14 20.2 V G96
2021-12-13 05:38:36 C 03 39 36.29 +40 14 26.0 V G96