2021 XC4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5291206000 ± 2.00e+00
Semi-major axis (a)1.4149000000 AU ± 3.00e+00
Inclination (i)0.94669000° ± 4.00e+00
Long. of Asc. Node (Ω)69.18674000° ± 5.00e+00
Arg. of Perihelion (ω)277.35587000° ± 6.00e+00
Mean Anomaly (M)157.20386000° ± 4.80e+03
Mean Motion (n)0.5856193700°/day ± 1.86e+00
Perihelion dist (q)0.66624730 AU ± 3.16e+00
Aphelion dist (Q)2.16355270 AU ± 5.39e+00
Orbital Period1.68301750 yr ± 5.35e+00
Physical Parameters
H (abs. magnitude)26.29
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.480″
Uncertainty7
Orbit TypeApollo
MOID0.001094 AU
Observations Used65
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-12-13
Observations (65)
Date Type RA Dec Mag Band Observatory
2021-12-07 20:20:40 C 03 40 04.44 +24 11 49.4 o K88
2021-12-07 20:21:22 C 03 40 05.28 +24 11 50.5 o K88
2021-12-07 20:22:05 C 03 40 05.91 +24 11 50.7 o K88
2021-12-07 20:25:38 C 03 40 09.79 +24 11 55.7 o K88
2021-12-07 20:26:20 C 03 40 10.56 +24 11 56.1 o K88
2021-12-07 20:27:03 C 03 40 11.28 +24 11 56.3 o K88
2021-12-07 20:27:46 C 03 40 12.08 +24 11 57.7 o K88
2021-12-07 20:43:28 C 03 40 28.84 +24 12 16.0 o K88
2021-12-07 20:45:35 C 03 40 31.05 +24 12 18.7 o K88
2021-12-07 20:47:42 C 03 40 33.32 +24 12 20.7 o K88
2021-12-07 20:49:50 C 03 40 35.56 +24 12 23.0 o K88
2021-12-07 20:58:57 C 03 40 47.66 +24 12 12.4 V 033
2021-12-07 20:59:22 C 03 40 48.10 +24 12 13.1 V 033
2021-12-07 20:59:47 C 03 40 48.52 +24 12 13.6 V 033
2021-12-07 21:00:20 C 03 40 49.11 +24 12 14.2 V 033
2021-12-07 21:16:11 C 03 41 03.28 +24 12 51.3 o K88
2021-12-07 21:18:18 C 03 41 05.49 +24 12 53.5 o K88
2021-12-07 21:20:26 C 03 41 07.73 +24 12 55.8 o K88
2021-12-07 21:37:45 C 03 41 27.74 +24 13 25.5 X 595
2021-12-07 21:48:22 C 03 41 38.63 +24 13 35.9 X 595
2021-12-07 21:58:59 C 03 41 49.46 +24 13 46.5 X 595
2021-12-07 22:06:06 C 03 41 56.58 +24 13 56.7 V L01
2021-12-07 22:08:20 C 03 41 58.85 +24 13 58.8 V L01
2021-12-07 22:10:34 C 03 42 01.08 +24 14 00.7 V L01
2021-12-07 22:12:48 C 03 42 03.34 +24 14 02.9 V L01
2021-12-07 22:15:03 C 03 42 05.62 +24 14 05.0 V L01
2021-12-07 22:39:25 C 03 42 34.77 +24 13 52.7 V Z80
2021-12-07 22:54:18 C 03 42 49.61 +24 14 05.9 V Z80
2021-12-07 23:08:52 C 03 43 04.11 +24 14 18.7 V Z80
2021-12-08 00:29:31 C 03 44 16.85 +24 15 18.9 o K88
2021-12-08 00:34:09 C 03 44 21.34 +24 15 21.0 o K88
2021-12-08 02:42:51 C 03 46 52.68 +24 18 09.4 V 734
2021-12-08 02:46:46 C 03 46 56.14 +24 18 13.5 V 734
2021-12-08 02:50:43 C 03 46 59.49 +24 18 16.8 V 734
2021-12-08 02:54:37 C 03 47 02.98 +24 18 20.8 V 734
2021-12-08 03:06:45 C 03 47 13.46 +24 18 32.8 V 734
2021-12-08 05:56:03 C 03 49 37.35 +24 21 15.5 V 703
2021-12-08 06:03:39 C 03 49 43.19 +24 21 18.9 V 703
2021-12-08 06:11:14 C 03 49 49.07 +24 21 23.3 V 703
2021-12-08 07:28:58 C 03 50 47.49 +24 22 00.2 V V21
2021-12-08 07:41:38 C 03 50 57.00 +24 22 04.9 V V21
2021-12-08 07:54:20 C 03 51 06.49 +24 22 08.7 V V21
2021-12-08 08:06:45 C 03 51 15.70 +24 22 11.7 V V21
2021-12-08 23:42:17 C 04 02 09.22 +24 26 35.0 Z W33
2021-12-08 23:57:36 C 04 02 17.26 +24 26 43.3 Z W33
2021-12-09 00:12:56 C 04 02 25.13 +24 26 52.4 Z W33
2021-12-09 00:27:37 C 04 02 32.56 +24 27 01.1 X W34
2021-12-09 00:39:29 C 04 02 38.54 +24 27 07.2 X W34
2021-12-09 00:50:37 C 04 02 44.08 +24 27 12.9 X W34
2021-12-09 06:58:33 C 04 05 34.02 +24 28 57.3 V I52