2021 GR4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4084948000
Semi-major axis (a)1.4219284000 AU
Inclination (i)19.17119000°
Long. of Asc. Node (Ω)25.28782000°
Arg. of Perihelion (ω)241.42556000°
Mean Anomaly (M)231.64209000°
Mean Motion (n)0.5812828100°/day
Perihelion dist (q)0.84107800 AU
Aphelion dist (Q)2.00277880 AU
Orbital Period1.69557340 yr
Physical Parameters
H (abs. magnitude)25.02
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.840″
Uncertainty8
Orbit TypeApollo
MOID0.009045 AU
Observations Used26
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-04-09
Observations (27)
Date Type RA Dec Mag Band Observatory
2021-04-07 09:21:26 C 16 44 45.74 +24 09 48.4 V G96
2021-04-07 09:29:32 C 16 44 52.34 +24 09 09.4 V G96
2021-04-07 09:41:23 C 16 45 02.02 +24 08 10.4 V G96
2021-04-07 09:49:28 C 16 45 08.69 +24 07 28.9 V G96
2021-04-07 11:24:46 C 16 46 27.20 +23 59 24.0 V I52
2021-04-07 11:29:02 C 16 46 30.75 +23 59 00.6 V I52
2021-04-07 11:33:19 C 16 46 34.29 +23 58 38.5 V I52
2021-04-08 02:41:22 C 17 00 56.04 +22 28 59.7 V L01
2021-04-08 02:44:21 C 17 00 58.96 +22 28 39.7 V L01
2021-04-08 02:47:18 C 17 01 01.88 +22 28 20.3 V L01
2021-04-08 02:50:30 C 17 01 05.06 +22 27 59.9 V L01
2021-04-08 02:53:20 C 17 01 07.85 +22 27 40.9 V L01
2021-04-08 09:28:37 C 17 08 12.91 +21 42 03.9 V I52
2021-04-08 09:30:46 C 17 08 15.15 +21 41 48.2 V I52
2021-04-08 09:32:54 C 17 08 17.42 +21 41 32.9 V I52
2021-04-08 09:35:02 C 17 08 19.67 +21 41 17.3 V I52
2021-04-09 01:51:13 C 17 27 52.16 +19 22 26.6 V 033
2021-04-09 01:52:07 C 17 27 53.30 +19 22 18.0 V 033
2021-04-09 01:53:03 C 17 27 54.47 +19 22 09.3 V 033
2021-04-09 01:53:57 C 17 27 55.61 +19 22 00.7 V 033
2021-04-09 02:32:59 C 17 28 46.90 +19 16 04.8 U 511
2021-04-09 02:35:32 C 17 28 50.15 +19 15 39.8 U 511
2021-04-09 02:38:17 C 17 28 53.70 +19 15 11.1 U 511
2021-04-09 09:14:37 C 17 38 00.89 +18 07 25.2 V I52
2021-04-09 09:16:15 C 17 38 03.14 +18 07 07.7 V I52
2021-04-09 09:17:53 C 17 38 05.37 +18 06 50.5 V I52
2021-04-09 09:25:22 C 17 38 15.71 +18 05 29.5 V I52