IAA RAS IAA Minor Planet Database

2021 ER1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3606499981 ± 4.90e-05
Semi-major axis (a)1.7484090556 AU ± 1.54e-04
Inclination (i)8.78576242° ± 9.88e-04
Long. of Asc. Node (Ω)349.01801016° ± 3.78e-05
Arg. of Perihelion (ω)219.96132994° ± 2.04e-04
Mean Anomaly (M)353.64150293° ± 9.45e-02
Mean Motion (n)0.4263317780°/day ± 5.64e-05
Perihelion dist (q)1.11784533 AU ± 1.31e-04
Aphelion dist (Q)2.37897278 AU ± 2.27e-04
Orbital Period2.31187618 yr ± 3.06e-04
Physical Parameters
H (abs. magnitude)24.39
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.293″
Uncertainty2
Orbit TypeAmor
MOID0.144812 AU
Observations Used42
Oppositions1
Arc Total2021-2021
First Observation Used2021-03-06
Last Observation Used2021-04-09
Observations (44)
Date Type RA Dec Mag Band Observatory
2021-03-06 07:38:20 C 11 16 38.04 +07 42 21.7 – V G96
2021-03-06 07:45:43 C 11 16 37.72 +07 42 09.1 – V G96
2021-03-06 07:53:05 C 11 16 37.31 +07 41 56.8 – V G96
2021-03-06 08:00:27 C 11 16 36.98 +07 41 45.5 – V G96
2021-03-06 10:25:58 C 11 16 29.98 +07 37 49.0 – o 691
2021-03-06 10:38:53 C 11 16 29.33 +07 37 28.6 – o 691
2021-03-06 22:02:24 C 11 16 04.81 +07 18 39.1 – V 033
2021-03-06 22:07:33 C 11 16 04.58 +07 18 30.7 – V 033
2021-03-06 22:12:44 C 11 16 04.34 +07 18 22.4 – V 033
2021-03-07 03:32:24 C 11 15 49.48 +07 09 30.6 – V 033
2021-03-07 03:37:34 C 11 15 49.24 +07 09 22.1 – V 033
2021-03-07 04:57:49 C 11 15 48.28 +07 07 16.2 – u H21
2021-03-07 05:06:34 C 11 15 47.83 +07 07 01.8 – u H21
2021-03-07 05:14:09 C 11 15 47.46 +07 06 49.1 – u H21
2021-03-07 06:16:18 C 11 15 45.29 +07 05 09.9 – V I52
2021-03-07 06:24:47 C 11 15 44.88 +07 04 55.7 – V I52
2021-03-07 06:33:16 C 11 15 44.42 +07 04 40.9 – V I52
2021-03-07 06:41:45 C 11 15 44.00 +07 04 27.0 – V I52
2021-03-07 22:52:08 C 11 15 04.14 +06 36 54.8 – V L01
2021-03-07 22:55:31 C 11 15 03.96 +06 36 49.4 – V L01
2021-03-07 22:59:27 C 11 15 03.78 +06 36 42.7 – V L01
2021-03-10 02:29:08 C 11 12 53.22 +05 05 40.5 – u 807
2021-03-10 02:38:09 C 11 12 52.81 +05 05 24.6 – u 807
2021-03-10 02:46:46 C 11 12 52.33 +05 05 08.6 – u 807
2021-03-10 09:57:31 C 11 12 30.32 +04 50 58.6 – V I52
2021-03-10 10:02:21 C 11 12 30.09 +04 50 50.0 – V I52
2021-03-10 10:14:42 C 11 12 29.45 +04 50 26.8 – V I52
2021-03-10 10:19:33 C 11 12 29.16 +04 50 17.8 – V I52
2021-03-12 05:08:21 C 11 10 33.77 +03 28 21.3 – u 807
2021-03-12 05:20:14 C 11 10 33.07 +03 27 57.6 – u 807
2021-03-12 05:31:40 C 11 10 32.41 +03 27 34.9 – u 807
2021-03-18 09:45:17 C 11 03 21.12 -01 57 22.2 – o 691
2021-03-18 10:00:44 C 11 03 20.25 -01 57 58.7 – o 691
2021-03-18 10:16:10 C 11 03 19.35 -01 58 35.3 – o 691
2021-03-25 03:37:55 C 10 55 36.60 -08 49 25.9 – V 807
2021-03-25 03:44:53 C 10 55 36.20 -08 49 44.7 – V 807
2021-03-25 03:51:38 C 10 55 35.79 -08 50 03.0 – V 807
2021-04-03 04:16:23 C 10 47 15.76 -18 59 17.1 – V V06
2021-04-03 04:25:32 C 10 47 15.36 -18 59 43.2 – V V06
2021-04-03 04:34:39 C 10 47 14.95 -19 00 09.6 – V V06
2021-04-09 04:47:12 C 10 44 07.77 -25 46 11.4 – V G96
2021-04-09 04:57:29 C 10 44 07.52 -25 46 39.4 – V G96
2021-04-09 05:07:46 C 10 44 07.18 -25 47 08.6 – V G96
2021-04-09 05:18:04 C 10 44 06.89 -25 47 35.9 – V G96