IAA RAS IAA Minor Planet Database

2021 GJ4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3233294071 ± 6.34e-02
Semi-major axis (a)1.4302396415 AU ± 1.30e-01
Inclination (i)5.44455860° ± 8.55e-01
Long. of Asc. Node (Ω)0.25884319° ± 3.89e-01
Arg. of Perihelion (ω)149.88352152° ± 7.53e-01
Mean Anomaly (M)277.07322432° ± 1.36e+02
Mean Motion (n)0.5779001700°/day ± 7.86e-02
Perihelion dist (q)0.96672010 AU ± 1.26e-01
Aphelion dist (Q)1.88822330 AU ± 1.94e-01
Orbital Period1.70549820 yr ± 2.32e-01
Physical Parameters
H (abs. magnitude)24.80
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.576″
Uncertainty4
Orbit TypeApollo
MOID0.003078 AU
Observations Used44
Oppositions1
Arc Total2021-2021
First Observation Used—
Last Observation Used2021-04-19
Observations (47)
Date Type RA Dec Mag Band Observatory
2021-04-07 07:07:41 C 09 53 42.556 -14 54 38.49 – U F51
2021-04-07 07:24:39 C 09 53 50.092 -14 55 59.57 – U F51
2021-04-07 07:58:40 C 09 54 05.169 -14 58 40.74 – U F51
2021-04-07 12:52:39 C 09 56 22.89 -15 18 58.7 – V 474
2021-04-07 12:53:57 C 09 56 23.51 -15 19 04.8 – V 474
2021-04-07 12:55:16 C 09 56 24.12 -15 19 10.5 – V 474
2021-04-07 19:40:05 C 09 59 42.45 -15 53 31.2 – V L01
2021-04-07 19:53:09 C 09 59 48.20 -15 54 29.7 – V L01
2021-04-07 19:57:50 C 09 59 50.28 -15 54 51.1 – V L01
2021-04-07 20:20:50 C 10 00 02.09 -15 56 32.7 – V I93
2021-04-07 20:31:27 C 10 00 06.73 -15 57 21.3 – V I93
2021-04-07 20:42:17 C 10 00 11.48 -15 58 09.7 – V I93
2021-04-08 03:33:23 C 10 03 23.99 -16 28 05.7 – o 291
2021-04-08 03:36:51 C 10 03 25.48 -16 28 21.0 – o 291
2021-04-08 03:40:20 C 10 03 26.94 -16 28 35.9 – o 291
2021-04-08 03:50:52 C 10 03 31.30 -16 29 22.8 – V I52
2021-04-08 03:52:17 C 10 03 31.91 -16 29 29.2 – V I52
2021-04-08 03:53:43 C 10 03 32.49 -16 29 35.5 – V I52
2021-04-08 03:55:08 C 10 03 33.12 -16 29 41.7 – V I52
2021-04-08 09:18:12 C 10 06 00.36 -16 49 55.2 – V 474
2021-04-08 09:21:39 C 10 06 01.82 -16 50 09.7 – V 474
2021-04-08 09:23:22 C 10 06 02.57 -16 50 17.0 – V 474
2021-04-08 09:26:50 C 10 06 04.02 -16 50 31.8 – V 474
2021-04-08 19:46:24 C 10 10 41.69 -17 36 19.3 – V 033
2021-04-08 19:48:39 C 10 10 42.59 -17 36 28.3 – V 033
2021-04-08 19:50:54 C 10 10 43.51 -17 36 37.6 – V 033
2021-04-09 23:47:42 C 10 22 39.67 -19 19 05.1 – u 807
2021-04-09 23:54:59 C 10 22 42.43 -19 19 31.3 – u 807
2021-04-10 00:01:50 C 10 22 45.03 -19 19 56.0 – u 807
2021-04-10 04:44:21 C 10 24 35.69 -19 38 24.9 – V G96
2021-04-10 04:51:44 C 10 24 38.40 -19 38 50.0 – V G96
2021-04-10 04:59:08 C 10 24 41.16 -19 39 15.5 – V G96
2021-04-10 05:06:31 C 10 24 43.92 -19 39 40.0 – V G96
2021-04-11 08:50:44 C 10 35 33.02 -21 05 37.2 – V 474
2021-04-11 08:52:53 C 10 35 33.78 -21 05 44.0 – V 474
2021-04-11 08:55:01 C 10 35 34.49 -21 05 50.4 – V 474
2021-04-11 08:57:10 C 10 35 35.27 -21 05 57.0 – V 474
2021-04-14 03:24:56 C 10 58 14.62 -23 53 50.6 – u 807
2021-04-14 03:34:05 C 10 58 17.21 -23 54 09.5 – u 807
2021-04-14 03:43:20 C 10 58 19.86 -23 54 28.6 – u 807
2021-04-14 10:13:55 C 11 00 23.10 -24 07 36.8 – V 474
2021-04-14 10:16:29 C 11 00 23.80 -24 07 42.1 – V 474
2021-04-14 10:19:02 C 11 00 24.53 -24 07 47.3 – V 474
2021-04-14 10:21:36 C 11 00 25.25 -24 07 52.6 – V 474
2021-04-19 09:33:43 C 11 31 52.73 -27 09 06.3 – V 474
2021-04-19 09:40:31 C 11 31 54.13 -27 09 13.0 – V 474
2021-04-19 09:47:18 C 11 31 55.55 -27 09 21.6 – V 474