2021 ER3

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5598841000
Semi-major axis (a)1.9454418000 AU
Inclination (i)2.70211000°
Long. of Asc. Node (Ω)163.00457000°
Arg. of Perihelion (ω)313.49284000°
Mean Anomaly (M)277.32844000°
Mean Motion (n)0.3632258100°/day
Perihelion dist (q)0.85621990 AU
Aphelion dist (Q)3.03466370 AU
Orbital Period2.71348460 yr
Physical Parameters
H (abs. magnitude)25.98
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.480″
Uncertainty6
Orbit TypeApollo
MOID0.004391 AU
Observations Used117
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-03-20
Observations (122)
Date Type RA Dec Mag Band Observatory
2021-03-11 02:17:10 C 11 29 25.18 +38 27 33.6 V L01
2021-03-11 02:17:26 C 11 29 24.16 +38 26 24.3 o K88
2021-03-11 02:17:48 C 11 29 25.13 +38 26 05.6 o K88
2021-03-11 02:17:59 C 11 29 27.30 +38 26 53.1 V L01
2021-03-11 02:18:10 C 11 29 26.15 +38 25 47.0 o K88
2021-03-11 02:18:33 C 11 29 27.09 +38 25 28.6 o K88
2021-03-11 02:18:48 C 11 29 29.43 +38 26 12.0 V L01
2021-03-11 02:19:38 C 11 29 31.59 +38 25 30.9 V L01
2021-03-11 02:20:28 C 11 29 33.71 +38 24 50.0 V L01
2021-03-11 02:21:17 C 11 29 35.84 +38 24 09.3 V L01
2021-03-11 03:13:25 C 11 33 07.36 +37 39 25.7 V U55
2021-03-11 03:17:06 C 11 33 16.53 +37 36 38.2 V U55
2021-03-11 03:20:53 C 11 33 25.94 +37 33 46.6 V U55
2021-03-11 03:37:36 C 11 32 46.70 +37 21 38.5 o K88
2021-03-11 03:37:59 C 11 32 47.61 +37 21 20.7 o K88
2021-03-11 03:38:21 C 11 32 48.51 +37 21 03.3 o K88
2021-03-11 03:38:44 C 11 32 49.47 +37 20 45.1 o K88
2021-03-11 03:39:07 C 11 32 50.34 +37 20 27.8 o K88
2021-03-11 03:39:29 C 11 32 51.30 +37 20 09.4 o K88
2021-03-11 03:39:52 C 11 32 52.20 +37 19 52.1 o K88
2021-03-11 03:40:14 C 11 32 53.13 +37 19 34.1 o K88
2021-03-11 03:41:30 C 11 34 19.73 +37 22 06.4 q 858
2021-03-11 03:49:02 C 11 34 37.26 +37 16 29.3 q 858
2021-03-11 03:59:01 C 11 35 00.25 +37 09 03.6 q 858
2021-03-11 04:09:02 C 11 35 22.99 +37 01 39.3 q 858
2021-03-11 04:14:09 C 11 35 38.37 +36 58 01.1 V I52
2021-03-11 04:14:43 C 11 35 39.61 +36 57 36.6 V I52
2021-03-11 04:15:16 C 11 35 40.88 +36 57 11.8 V I52
2021-03-11 04:15:50 C 11 35 42.16 +36 56 46.8 V I52
2021-03-11 05:15:31 C 11 37 37.89 +36 13 04.2 q H36
2021-03-11 05:18:02 C 11 37 43.09 +36 11 16.6 q H36
2021-03-11 05:21:17 C 11 37 49.81 +36 08 55.3 q H36
2021-03-11 05:24:32 C 11 37 56.48 +36 06 35.2 q H36
2021-03-11 16:27:00 C 11 56 46.29 +29 25 21.4 V N82
2021-03-11 16:34:18 C 11 56 54.92 +29 21 48.2 V N82
2021-03-11 16:40:55 C 11 57 02.63 +29 18 36.3 V N82
2021-03-11 19:44:45 C 12 00 49.91 +27 51 28.8 V 033
2021-03-11 19:45:16 C 12 00 50.45 +27 51 15.5 V 033
2021-03-11 19:45:46 C 12 00 50.98 +27 51 02.4 V 033
2021-03-11 20:27:23 C 12 01 36.79 +27 32 35.1 V J95
2021-03-11 20:32:15 C 12 01 41.79 +27 30 31.8 V J95
2021-03-11 20:35:48 C 12 01 45.44 +27 29 01.9 V J95
2021-03-11 20:39:09 C 12 01 48.85 +27 27 37.0 V J95
2021-03-11 21:30:29 C 12 02 39.30 +27 06 16.2 V Z80
2021-03-11 21:37:09 C 12 02 45.62 +27 03 31.9 V Z80
2021-03-11 21:43:46 C 12 02 51.98 +27 00 48.7 V Z80
2021-03-11 22:13:01 C 12 02 50.78 +26 53 31.7 q C97
2021-03-11 22:13:42 C 12 02 51.48 +26 53 11.5 q C97
2021-03-11 22:14:24 C 12 02 52.02 +26 52 53.5 q C97
2021-03-12 02:53:46 C 12 07 06.62 +25 02 01.9 V 204