IAA RAS IAA Minor Planet Database

2021 XA4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4500728000
Semi-major axis (a)1.2231778000 AU
Inclination (i)12.12612000°
Long. of Asc. Node (Ω)75.46115000°
Arg. of Perihelion (ω)265.68451000°
Mean Anomaly (M)15.31317000°
Mean Motion (n)0.7285673200°/day
Perihelion dist (q)0.67265870 AU
Aphelion dist (Q)1.77369690 AU
Orbital Period1.35280250 yr
Physical Parameters
H (abs. magnitude)26.55
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.760″
Uncertainty7
Orbit TypeApollo
MOID0.009550 AU
Observations Used19
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-12-09
Observations (20)
Date Type RA Dec Mag Band Observatory
2021-12-06 04:43:59 C 03 11 27.91 -16 17 43.1 – V G96
2021-12-06 04:52:10 C 03 11 35.96 -16 05 52.9 – V G96
2021-12-06 05:08:29 C 03 11 51.83 -15 42 20.8 – V G96
2021-12-08 05:53:31 C 03 39 26.15 +20 22 44.4 – V 703
2021-12-08 06:01:06 C 03 39 27.62 +20 25 13.9 – V 703
2021-12-08 06:08:41 C 03 39 29.01 +20 27 42.7 – V 703
2021-12-08 07:00:39 C 03 39 39.11 +20 44 34.1 – V I52
2021-12-08 07:00:59 C 03 39 39.18 +20 44 40.5 – V I52
2021-12-08 07:01:20 C 03 39 39.25 +20 44 47.0 – V I52
2021-12-08 07:01:40 C 03 39 39.31 +20 44 53.3 – V I52
2021-12-08 08:01:14 C 03 39 51.03 +21 03 37.4 – V I52
2021-12-08 08:01:35 C 03 39 51.08 +21 03 44.0 – V I52
2021-12-08 08:01:55 C 03 39 51.16 +21 03 50.0 – V I52
2021-12-08 08:02:15 C 03 39 51.21 +21 03 56.5 – V I52
2021-12-08 13:38:19 C 03 41 27.30 +22 42 27.7 – r P93
2021-12-08 13:40:41 C 03 41 27.71 +22 43 06.5 – r P93
2021-12-08 13:45:26 C 03 41 28.48 +22 44 24.2 – r P93
2021-12-09 03:01:22 C 03 44 31.21 +25 51 57.5 – V I52
2021-12-09 03:06:45 C 03 44 31.88 +25 53 03.3 – V I52
2021-12-09 03:07:13 C 03 44 31.97 +25 53 09.2 – V I52