2021 XQ4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5791162905 ± 2.73e-02
Semi-major axis (a)1.4272465400 AU ± 6.49e-02
Inclination (i)0.91368464° ± 4.35e-02
Long. of Asc. Node (Ω)71.65668848° ± 3.06e-02
Arg. of Perihelion (ω)269.43913365° ± 6.27e-02
Mean Anomaly (M)144.59214285° ± 5.94e+01
Mean Motion (n)0.5780542600°/day ± 3.94e-02
Perihelion dist (q)0.60069780 AU ± 4.76e-02
Aphelion dist (Q)2.25373820 AU ± 1.10e-01
Orbital Period1.70504350 yr ± 1.16e-01
Physical Parameters
H (abs. magnitude)26.76
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.364″
Uncertainty3
Orbit TypeApollo
MOID0.000895 AU
Observations Used32
Oppositions1
Arc Total2021-2021
First Observation Used
Last Observation Used2021-12-13
Observations (32)
Date Type RA Dec Mag Band Observatory
2021-12-09 05:17:21 C 03 01 54.93 +21 12 57.4 V G96
2021-12-09 05:25:27 C 03 02 10.36 +21 13 41.7 V G96
2021-12-09 05:41:42 C 03 02 41.48 +21 15 10.9 V G96
2021-12-09 06:36:34 C 03 04 24.24 +21 19 56.3 V I52
2021-12-09 06:37:03 C 03 04 25.13 +21 19 58.7 V I52
2021-12-09 06:37:31 C 03 04 25.98 +21 20 01.0 V I52
2021-12-09 06:38:00 C 03 04 26.86 +21 20 03.6 V I52
2021-12-09 07:43:48 C 03 06 26.09 +21 25 18.5 V I52
2021-12-09 07:44:32 C 03 06 27.38 +21 25 22.1 V I52
2021-12-09 07:45:14 C 03 06 28.67 +21 25 25.0 V I52
2021-12-09 07:45:57 C 03 06 29.93 +21 25 28.4 V I52
2021-12-09 12:18:46 C 03 14 38.04 +21 45 23.7 r P93
2021-12-09 12:23:37 C 03 14 45.27 +21 45 42.5 r P93
2021-12-09 12:28:22 C 03 14 52.30 +21 46 01.6 r P93
2021-12-09 12:30:44 C 03 14 55.80 +21 46 11.0 r P93
2021-12-09 19:00:27 C 03 24 15.88 +22 06 19.6 Z K19
2021-12-09 19:09:02 C 03 24 26.31 +22 06 45.8 Z K19
2021-12-09 19:17:36 C 03 24 36.54 +22 07 11.4 Z K19
2021-12-09 21:04:20 C 03 26 39.40 +22 12 06.4 V L06
2021-12-09 21:05:39 C 03 26 40.88 +22 12 10.3 V L06
2021-12-09 21:06:38 C 03 26 41.98 +22 12 12.7 V L06
2021-12-11 09:51:53 C 03 54 36.62 +23 03 44.8 o 291
2021-12-11 09:53:10 C 03 54 37.20 +23 03 45.1 o 291
2021-12-12 02:33:06 C 04 01 55.64 +23 13 32.3 V 291
2021-12-12 02:36:29 C 04 01 56.76 +23 13 34.9 V 291
2021-12-12 02:48:21 C 04 02 00.65 +23 13 42.5 V 291
2021-12-12 02:57:23 C 04 02 03.47 +23 13 48.7 V I52
2021-12-12 02:58:45 C 04 02 03.92 +23 13 49.2 V I52
2021-12-12 03:00:06 C 04 02 04.37 +23 13 50.2 V I52
2021-12-12 03:01:28 C 04 02 04.72 +23 13 50.4 V I52
2021-12-13 04:38:28 C 04 09 31.60 +23 23 06.5 o 291
2021-12-13 05:17:51 C 04 09 39.58 +23 23 19.4 o 291