IAA RAS IAA Minor Planet Database

2021 MK1

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2879628689 ± 5.06e-08
Semi-major axis (a)0.8076854243 AU ± 1.80e-08
Inclination (i)19.24242021° ± 1.77e-05
Long. of Asc. Node (Ω)273.98517652° ± 2.91e-06
Arg. of Perihelion (ω)198.99106814° ± 9.62e-06
Mean Anomaly (M)177.32578353° ± 7.18e-05
Mean Motion (n)1.3578409679°/day ± 4.53e-08
Perihelion dist (q)0.57510201 AU ± 4.29e-08
Aphelion dist (Q)1.04026884 AU ± 4.70e-08
Orbital Period0.72587756 yr ± 2.42e-08
Physical Parameters
H (abs. magnitude)21.32
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.195″
Uncertainty0
Orbit TypeAten
MOID0.000066 AU
Observations Used279
Oppositions2
Arc Total2016-2021
First Observation Used2016-05-28
Last Observation Used2021-08-06
Observations (323)
Date Type RA Dec Mag Band Observatory
2021-07-16 00:48:58 C 16 59 38.76 +51 47 47.7 – V J95
2021-07-16 00:55:47 C 16 59 36.59 +51 47 41.3 – V J95
2021-07-16 07:18:13 C 16 57 42.86 +51 42 36.1 – V 291
2021-07-16 07:23:05 C 16 57 41.31 +51 42 31.2 – V 291
2021-07-16 07:27:18 C 16 57 39.98 +51 42 27.0 – V 291
2021-07-16 23:10:54 C 16 53 15.60 +51 28 21.1 – V Z99
2021-07-16 23:14:47 C 16 53 14.49 +51 28 17.5 – V Z99
2021-07-16 23:18:40 C 16 53 13.37 +51 28 13.4 – V Z99
2021-07-16 23:22:33 C 16 53 12.23 +51 28 09.9 – V Z99
2021-07-16 23:26:27 C 16 53 11.10 +51 28 06.3 – V Z99
2021-07-17 05:49:53 C 16 51 33.889 +51 23 11.04 – V T12
2021-07-17 05:53:45 C 16 51 32.756 +51 23 08.07 – V T12
2021-07-17 06:50:39 C 16 51 16.089 +51 22 21.11 – U F51
2021-07-17 07:07:40 C 16 51 11.061 +51 22 06.85 – U F51
2021-07-17 07:24:42 C 16 51 06.050 +51 21 52.24 – U F51
2021-07-17 07:41:39 C 16 51 01.060 +51 21 37.50 – U F51
2021-07-17 21:51:04 C 16 47 23.16 +51 08 38.7 – V K87
2021-07-17 21:57:23 C 16 47 21.48 +51 08 33.1 – V K87
2021-07-17 22:03:44 C 16 47 19.77 +51 08 27.1 – V K87
2021-07-18 05:26:26 S 16 45 36.367 +51 01 57.40 – L C51
2021-07-18 07:00:30 S 16 45 13.848 +51 00 36.36 – L C51
2021-07-18 08:44:26 C 16 44 44.978 +50 59 44.19 – U F51
2021-07-18 08:58:24 C 16 44 41.281 +50 59 30.81 – U F51
2021-07-18 09:12:27 C 16 44 37.617 +50 59 17.50 – U F51
2021-07-18 10:08:50 S 16 44 29.503 +50 57 52.56 – L C51
2021-07-18 11:42:10 S 16 44 07.726 +50 56 35.34 – L C51
2021-07-18 16:25:06 S 16 43 02.592 +50 52 28.88 – L C51
2021-07-18 20:48:57 C 16 42 00.10 +50 48 52.8 – V 587
2021-07-18 20:53:06 C 16 41 59.09 +50 48 49.3 – V 587
2021-07-18 20:55:52 C 16 41 58.42 +50 48 47.0 – V 587
2021-07-19 08:05:35 S 16 39 34.490 +50 39 06.70 – L C51
2021-07-19 09:39:39 S 16 39 14.45 +50 37 46.3 – L C51
2021-07-19 09:45:54 C 16 39 07.390 +50 38 06.91 – U F51
2021-07-19 10:12:02 C 16 39 01.293 +50 37 41.24 – U F51
2021-07-19 10:25:07 C 16 38 58.257 +50 37 28.13 – U F51
2021-07-19 11:13:43 S 16 38 54.74 +50 36 27.4 – L C51
2021-07-19 14:21:51 S 16 38 15.11 +50 33 46.4 – L C51
2021-07-19 15:55:54 S 16 37 55.44 +50 32 30.6 – L C51
2021-07-19 15:56:06 S 16 37 55.43 +50 32 27.9 – L C51
2021-07-19 17:30:10 S 16 37 36.17 +50 31 07.7 – L C51
2021-07-19 19:04:14 S 16 37 16.800 +50 29 49.60 – L C51
2021-07-19 20:38:18 S 16 36 57.552 +50 28 31.08 – L C51
2021-07-19 22:12:22 S 16 36 38.647 +50 27 11.38 – L C51
2021-07-20 01:20:41 S 16 36 00.833 +50 24 33.55 – L C51
2021-07-20 21:06:36 C 16 32 10.69 +50 08 11.6 – V K87
2021-07-20 21:17:09 C 16 32 08.58 +50 08 01.7 – V K87
2021-07-20 21:27:42 C 16 32 06.44 +50 07 53.3 – V K87
2021-07-21 20:56:06 C 16 27 59.35 +49 48 53.1 – V K87
2021-07-21 21:05:36 C 16 27 57.62 +49 48 45.8 – V K87
2021-07-21 21:15:04 C 16 27 55.83 +49 48 38.5 – V K87