2021 RF4

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5156633069 ± 1.12e-05
Semi-major axis (a)2.5001767176 AU ± 6.66e-05
Inclination (i)3.91306022° ± 6.61e-05
Long. of Asc. Node (Ω)40.01249594° ± 5.06e-05
Arg. of Perihelion (ω)327.24585829° ± 7.70e-05
Mean Anomaly (M)17.13261366° ± 1.53e-02
Mean Motion (n)0.2493194822°/day ± 9.96e-06
Perihelion dist (q)1.21092732 AU ± 4.27e-05
Aphelion dist (Q)3.78942611 AU ± 1.05e-04
Orbital Period3.95326621 yr ± 1.58e-04
Physical Parameters
H (abs. magnitude)23.55
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.126″
Uncertainty2
Orbit TypeAmor
MOID0.211747 AU
Observations Used43
Oppositions1
Arc Total2021-2021
First Observation Used2021-09-07
Last Observation Used2021-11-07
Observations (46)
Date Type RA Dec Mag Band Observatory
2021-09-07 11:25:46 C 00 22 01.719 -15 21 35.77 U F52
2021-09-07 11:41:37 C 00 22 02.866 -15 21 24.90 U F52
2021-09-07 12:13:06 C 00 22 05.122 -15 21 03.04 U F52
2021-09-07 13:26:52 C 00 22 10.469 -15 20 11.50 V F51
2021-09-07 13:27:51 C 00 22 10.533 -15 20 10.79 V F51
2021-09-07 13:29:48 C 00 22 10.682 -15 20 09.50 V F51
2021-09-08 23:55:53 C 00 25 01.43 -14 55 57.6 V 033
2021-09-09 00:01:03 C 00 25 01.80 -14 55 54.5 V 033
2021-09-09 00:06:13 C 00 25 02.24 -14 55 50.5 V 033
2021-09-09 00:11:45 C 00 25 02.66 -14 55 46.6 V 033
2021-09-09 13:24:23 C 00 26 06.100 -14 45 48.34 U F51
2021-09-09 13:33:26 C 00 26 06.750 -14 45 41.52 U F51
2021-09-09 13:42:29 C 00 26 07.409 -14 45 34.42 U F51
2021-09-09 13:50:22 C 00 26 07.976 -14 45 28.43 U F51
2021-09-29 12:43:29 C 01 01 58.376 -06 36 55.39 U F51
2021-09-29 13:00:26 C 01 01 59.333 -06 36 34.25 U F51
2021-09-29 13:17:21 C 01 02 00.266 -06 36 13.03 U F51
2021-09-29 13:34:24 C 01 02 01.241 -06 35 51.63 U F51
2021-10-03 09:07:14 C 01 07 51.558 -04 40 02.31 U F51
2021-10-03 09:22:15 C 01 07 52.317 -04 39 43.01 U F51
2021-10-03 09:45:28 C 01 07 53.487 -04 39 13.32 U F51
2021-10-03 10:00:27 C 01 07 54.238 -04 38 54.16 U F51
2021-10-05 11:55:55 C 01 10 52.202 -03 34 22.44 U F51
2021-10-05 12:12:32 C 01 10 53.002 -03 34 00.83 U F51
2021-10-05 12:45:10 C 01 10 54.597 -03 33 18.14 U F51
2021-10-10 08:20:31 C 01 17 24.53 -01 02 38.8 V G96
2021-10-10 08:28:01 C 01 17 24.87 -01 02 28.7 V G96
2021-10-10 08:35:29 C 01 17 25.22 -01 02 18.6 V G96
2021-10-10 08:42:57 C 01 17 25.54 -01 02 09.1 V G96
2021-10-13 09:06:20 C 01 21 14.284 +00 31 55.20 U F51
2021-10-13 09:27:11 C 01 21 15.133 +00 32 21.97 U F51
2021-10-13 09:48:01 C 01 21 15.979 +00 32 48.79 U F51
2021-10-26 10:23:48 C 01 35 43.657 +06 49 53.99 U F51
2021-10-26 10:58:17 C 01 35 44.799 +06 50 31.68 U F51
2021-10-26 11:15:31 C 01 35 45.386 +06 50 50.33 U F51
2021-10-28 05:32:55 C 01 37 33.92 +07 36 16.7 V G96
2021-10-28 05:40:19 C 01 37 34.21 +07 36 24.2 V G96
2021-10-28 05:47:43 C 01 37 34.45 +07 36 32.1 V G96
2021-10-28 05:55:08 C 01 37 34.66 +07 36 39.9 V G96
2021-10-31 07:16:21 C 01 40 38.118 +08 52 03.14 U F52
2021-10-31 07:34:58 C 01 40 38.747 +08 52 21.88 U F52
2021-10-31 07:53:36 C 01 40 39.353 +08 52 40.52 U F52
2021-10-31 08:12:15 C 01 40 39.971 +08 52 59.13 U F52
2021-11-07 06:27:59 C 01 47 29.527 +11 26 00.79 U F52
2021-11-07 06:42:43 C 01 47 30.036 +11 26 13.74 U F52
2021-11-07 06:57:26 C 01 47 30.538 +11 26 26.38 U F52