2021 XF4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.0812703270 ± 1.57e-07
Semi-major axis (a)1.2080019352 AU ± 9.45e-09
Inclination (i)10.10239368° ± 1.41e-05
Long. of Asc. Node (Ω)100.21960641° ± 1.35e-05
Arg. of Perihelion (ω)338.87067080° ± 2.98e-04
Mean Anomaly (M)347.58380550° ± 2.60e-04
Mean Motion (n)0.7423536208°/day ± 8.71e-09
Perihelion dist (q)1.10982722 AU ± 1.90e-07
Aphelion dist (Q)1.30617665 AU ± 1.90e-07
Orbital Period1.32770455 yr ± 1.56e-08
NGA Modelr2
A2-2.74017109e-13 ± 4.36e-14 AU/d²
Physical Parameters
H (abs. magnitude)24.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.268″
Uncertainty0
Orbit TypeAmor
MOID0.130101 AU
Observations Used46
Oppositions2
Arc Total2017-2026
First Observation Used2017-12-10
Last Observation Used2026-01-06
Observations (46)
Date Type RA Dec Mag Band Observatory
2017-12-10 08:01:59 C 02 24 33.569 -15 50 23.99 V F51
2017-12-10 08:18:44 C 02 24 33.308 -15 49 42.43 V F51
2017-12-10 08:35:27 C 02 24 32.977 -15 49 00.56 V F51
2018-01-12 07:34:54 C 02 55 16.484 +16 10 26.45 V F51
2018-01-12 07:50:20 C 02 55 17.511 +16 10 57.93 V F51
2021-12-06 06:21:04 C 04 34 39.96 -14 47 03.2 V G96
2021-12-06 06:29:08 C 04 34 39.33 -14 46 45.8 V G96
2021-12-06 06:37:12 C 04 34 38.66 -14 46 28.1 V G96
2021-12-06 06:45:16 C 04 34 38.00 -14 46 09.9 V G96
2021-12-06 07:29:43 C 04 34 34.20 -14 44 32.1 V H01
2021-12-06 07:38:05 C 04 34 33.50 -14 44 12.9 V H01
2021-12-06 09:51:40 C 04 34 22.93 -14 39 10.8 V I52
2021-12-06 10:01:07 C 04 34 22.24 -14 38 49.1 V I52
2021-12-07 12:31:32 C 04 32 37.13 -13 37 08.8 V 474
2021-12-07 12:35:46 C 04 32 36.79 -13 36 58.8 V 474
2021-12-07 12:39:59 C 04 32 36.45 -13 36 48.4 V 474
2021-12-07 12:44:13 C 04 32 36.12 -13 36 39.2 V 474
2021-12-09 07:31:19 C 04 29 44.39 -11 54 59.2 V V06
2021-12-09 07:36:32 C 04 29 43.97 -11 54 46.5 V V06
2021-12-09 07:41:45 C 04 29 43.55 -11 54 33.4 V V06
2021-12-15 04:04:16 C 04 20 53.16 -05 37 42.4 V 807
2021-12-15 04:11:14 C 04 20 52.64 -05 37 22.5 V 807
2021-12-27 03:57:34 C 04 08 00.05 +08 46 48.4 V 291
2021-12-27 04:06:53 C 04 07 59.64 +08 47 15.6 V 291
2021-12-27 04:16:12 C 04 07 59.23 +08 47 44.3 V 291
2022-01-04 01:34:01 C 04 05 14.03 +17 51 31.5 u H21
2022-01-04 01:40:52 C 04 05 13.94 +17 51 50.3 u H21
2022-01-04 01:50:24 C 04 05 13.79 +17 52 16.1 u H21
2022-01-04 05:28:21 C 04 05 12.21 +18 02 09.6 o 291
2022-01-04 05:51:00 C 04 05 11.91 +18 03 10.8 o 291
2022-01-08 07:18:58 C 04 05 57.58 +22 14 16.3 V V06
2022-01-08 07:21:59 C 04 05 57.58 +22 14 23.7 V V06
2022-01-08 07:25:01 C 04 05 57.60 +22 14 30.9 V V06
2022-01-08 07:28:03 C 04 05 57.61 +22 14 38.4 V V06
2025-11-16 11:53:35 C 06 48 28.024 -12 55 10.12 V F51
2025-11-16 12:06:01 C 06 48 28.524 -12 55 04.40 V F51
2025-12-30 09:11:38 C 06 49 24.049 +20 59 59.89 V I52
2025-12-30 09:13:25 C 06 49 23.970 +21 00 05.83 V I52
2025-12-30 09:15:12 C 06 49 23.837 +21 00 11.84 V I52
2025-12-30 09:16:59 C 06 49 23.711 +21 00 17.96 V I52
2026-01-05 20:38:59 C 06 41 54.545 +29 18 50.08 W J95
2026-01-05 21:34:28 C 06 41 51.218 +29 21 42.66 W J95
2026-01-05 22:44:15 B 06 41 46.481 +29 25 24.86 W 204
2026-01-05 23:04:15 C 06 41 45.718 +29 26 20.00 W J95
2026-01-05 23:55:59 B 06 41 41.883 +29 29 03.66 W 204
2026-01-06 00:18:11 C 06 41 41.098 +29 30 05.22 W J95