2021 YM

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7694370217 ± 4.48e-08
Semi-major axis (a)2.4524237678 AU ± 3.92e-08
Inclination (i)9.88404470° ± 7.32e-06
Long. of Asc. Node (Ω)319.34061470° ± 3.83e-05
Arg. of Perihelion (ω)33.20270917° ± 4.00e-05
Mean Anomaly (M)18.71451797° ± 9.26e-06
Mean Motion (n)0.2566368414°/day ± 6.15e-09
Perihelion dist (q)0.56543813 AU ± 1.10e-07
Aphelion dist (Q)4.33940941 AU ± 1.30e-07
Orbital Period3.84054868 yr ± 9.20e-08
Physical Parameters
H (abs. magnitude)18.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.213″
Uncertainty0
Orbit TypeApollo
MOID0.143573 AU
Observations Used221
Oppositions11
Arc Total2011-2026
First Observation Used2011-01-30
Last Observation Used2026-01-12
Observations (230)
Date Type RA Dec Mag Band Observatory
2021-12-29 00:57:12 C 01 21 34.31 +52 52 25.7 u H21
2021-12-29 18:36:06 C 01 36 55.39 +52 30 59.4 q I76
2021-12-29 18:45:56 C 01 37 03.59 +52 30 45.8 q I76
2021-12-29 18:55:57 C 01 37 11.61 +52 30 32.2 q I76
2021-12-29 19:17:58 C 01 37 29.68 +52 29 54.2 V Z80
2021-12-29 19:23:59 C 01 37 34.65 +52 29 45.8 V Z80
2021-12-29 19:29:55 C 01 37 39.55 +52 29 37.5 V Z80
2021-12-30 17:35:24 C 01 55 16.02 +51 55 04.2 V 130
2021-12-30 17:38:05 C 01 55 18.02 +51 54 59.7 V 130
2021-12-30 17:40:47 C 01 55 20.04 +51 54 55.6 V 130
2021-12-30 17:43:28 C 01 55 22.06 +51 54 50.7 V 130
2021-12-30 19:20:23 C 01 56 34.11 +51 52 03.4 V 204
2021-12-30 19:27:59 C 01 56 39.75 +51 51 50.2 V 204
2021-12-30 19:33:16 C 01 56 43.64 +51 51 40.7 V 204
2021-12-30 20:36:31 C 01 57 30.48 +51 49 49.5 X C95
2021-12-30 20:38:01 C 01 57 31.61 +51 49 47.2 X C95
2021-12-30 20:39:32 C 01 57 32.68 +51 49 44.2 X C95
2021-12-30 20:41:02 C 01 57 33.85 +51 49 41.5 X C95
2021-12-30 21:27:19 C 01 58 08.23 +51 48 21.4 q I76
2021-12-30 21:37:51 C 01 58 16.01 +51 48 02.7 q I76
2021-12-30 21:48:23 C 01 58 23.63 +51 47 44.0 q I76
2021-12-31 20:01:38 C 02 14 08.27 +51 05 53.5 V J95
2021-12-31 20:03:42 C 02 14 09.62 +51 05 49.5 V J95
2021-12-31 20:05:55 C 02 14 11.07 +51 05 45.3 V J95
2021-12-31 20:08:02 C 02 14 12.49 +51 05 41.0 V J95
2022-01-01 17:10:13 C 02 27 41.09 +50 22 38.1 V 033
2022-01-01 17:10:37 C 02 27 41.33 +50 22 37.3 V 033
2022-01-01 17:11:02 C 02 27 41.58 +50 22 36.2 V 033
2022-01-01 17:11:34 C 02 27 41.92 +50 22 35.3 V 033
2022-01-01 17:59:15 C 02 28 10.59 +50 20 56.6 V A17
2022-01-01 18:07:43 C 02 28 15.65 +50 20 38.9 V A17
2022-01-01 18:16:12 C 02 28 20.70 +50 20 21.3 V A17
2022-01-01 19:09:44 C 02 28 52.49 +50 18 28.6 q K74
2022-01-01 19:12:29 C 02 28 54.12 +50 18 22.8 q K74
2022-01-01 19:14:55 C 02 28 55.56 +50 18 17.5 q K74
2022-01-01 20:20:01 C 02 29 34.02 +50 16 02.2 V G15
2022-01-01 20:27:33 C 02 29 38.48 +50 15 45.9 V G15
2022-01-01 20:35:05 C 02 29 42.91 +50 15 29.9 V G15
2022-01-01 22:36:09 C 02 30 54.05 +50 11 08.1 q L47
2022-01-01 22:36:44 C 02 30 54.33 +50 11 05.4 q L47
2022-01-01 22:37:33 C 02 30 54.65 +50 11 03.8 q L47
2022-01-01 22:39:03 C 02 30 55.74 +50 11 00.7 q L47
2022-01-02 18:28:36 C 02 42 12.84 +49 28 22.6 q I76
2022-01-02 18:34:16 C 02 42 15.92 +49 28 10.8 q I76
2022-01-02 18:39:55 C 02 42 18.92 +49 27 58.7 q I76
2022-01-02 18:45:52 C 02 42 22.02 +49 27 45.5 q I76
2022-01-02 18:51:33 C 02 42 24.99 +49 27 33.1 q I76
2022-01-02 18:57:11 C 02 42 28.06 +49 27 21.2 q I76
2022-01-02 19:40:15 C 02 42 50.62 +49 25 42.3 q J69
2022-01-02 19:48:45 C 02 42 55.11 +49 25 23.9 q J69