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
2021-12-09 06:58:52 C 04 05 34.16 +24 28 57.0 V I52
2021-12-09 07:01:27 C 04 05 35.20 +24 28 57.3 V I52
2021-12-11 10:00:18 C 04 21 07.02 +24 30 00.7 V 291
2021-12-11 10:02:19 C 04 21 07.37 +24 30 00.1 V 291
2021-12-11 10:04:20 C 04 21 07.74 +24 29 59.6 V 291
2021-12-12 02:57:23 C 04 24 24.20 +24 29 36.7 V 291
2021-12-12 03:02:09 C 04 24 24.85 +24 29 37.6 V 291
2021-12-12 03:06:55 C 04 24 25.50 +24 29 38.4 V 291
2021-12-12 03:25:11 C 04 24 27.80 +24 29 40.2 V I52
2021-12-12 03:28:53 C 04 24 28.32 +24 29 40.8 V I52
2021-12-12 03:42:07 C 04 24 30.03 +24 29 41.9 V I52
2021-12-12 03:44:45 C 04 24 30.41 +24 29 42.7 V I52
2021-12-13 08:12:08 C 04 28 14.24 +24 28 55.2 o 691
2021-12-13 08:32:58 C 04 28 16.07 +24 28 52.7 o 691
2021-12-13 08:44:33 C 04 28 17.09 +24 28 50.9 o 691