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
2025-04-25 01:25:27 C 14 26 13.26 -34 08 24.2 V J04
2025-04-25 01:31:48 C 14 26 12.71 -34 08 25.0 V J04
2025-11-03 11:25:03 C 10 16 52.136 +20 13 59.48 V G96
2025-11-03 11:33:54 C 10 16 52.320 +20 13 57.72 V G96
2025-11-03 11:42:47 C 10 16 52.478 +20 13 56.10 V G96
2025-11-03 11:51:39 C 10 16 52.644 +20 13 54.30 V G96
2025-11-25 23:07:06 C 10 19 17.870 +19 14 35.72 W O18
2025-11-25 23:07:52 C 10 19 17.875 +19 14 36.28 W O18
2025-11-27 22:16:30 C 10 18 29.753 +19 15 10.26 W O18
2025-11-27 23:07:40 C 10 18 28.668 +19 15 11.39 W O18
2025-11-29 20:47:00 C 10 17 30.90 +19 16 42.2 V D29
2025-11-29 21:07:22 C 10 17 30.52 +19 16 42.6 V D29
2025-11-29 21:27:44 C 10 17 29.94 +19 16 44.2 V D29
2025-12-14 20:15:39 C 10 03 16.434 +19 59 00.00 W O18
2025-12-14 20:24:14 C 10 03 15.939 +19 59 01.58 W O18
2025-12-14 21:08:41 C 10 03 13.324 +19 59 10.17 W O18
2025-12-18 17:59:51 C 09 57 32.05 +20 17 50.9 V D29
2025-12-18 18:20:11 C 09 57 30.67 +20 17 55.5 V D29
2025-12-27 18:33:42 C 09 41 14.144 +21 08 55.64 W O18
2025-12-27 19:03:37 C 09 41 11.35 +21 09 04.3 V D29
2025-12-27 19:23:59 C 09 41 09.60 +21 09 09.3 V D29
2025-12-27 19:44:21 C 09 41 07.85 +21 09 14.9 V D29
2025-12-27 19:46:15 C 09 41 07.902 +21 09 14.12 W O18
2025-12-30 17:47:02 C 09 35 04.209 +21 26 46.47 W O18
2025-12-30 18:57:42 C 09 34 57.801 +21 27 04.18 W O18
2026-01-09 16:33:10 C 09 12 27.376 +22 23 37.39 W O18
2026-01-09 17:37:26 C 09 12 20.915 +22 23 51.72 W O18
2026-01-12 20:09:39 C 09 04 57.04 +22 39 14.5 V D29
2026-01-12 20:30:01 C 09 04 55.04 +22 39 18.7 V D29
2026-01-12 20:50:23 C 09 04 52.92 +22 39 22.9 V D29