IAA RAS IAA Minor Planet Database

2021 HK1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5000498000
Semi-major axis (a)1.9856848000 AU
Inclination (i)1.84428000°
Long. of Asc. Node (Ω)226.67650000°
Arg. of Perihelion (ω)307.95989000°
Mean Anomaly (M)240.15990000°
Mean Motion (n)0.3522399400°/day
Perihelion dist (q)0.99274350 AU
Aphelion dist (Q)2.97862610 AU
Orbital Period2.79811440 yr
Physical Parameters
H (abs. magnitude)26.54
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.750″
Uncertainty7
Orbit TypeApollo
MOID0.020067 AU
Observations Used18
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-04-19
Observations (19)
Date Type RA Dec Mag Band Observatory
2021-04-10 03:55:03 C 09 25 38.62 -11 51 05.5 – V G96
2021-04-10 04:02:31 C 09 25 46.80 -11 51 47.6 – V G96
2021-04-17 09:53:29 C 12 40 28.713 -20 44 43.82 – U F51
2021-04-17 10:10:34 C 12 40 42.140 -20 44 51.97 – V F51
2021-04-17 10:26:55 C 12 40 55.010 -20 44 59.28 – U F51
2021-04-17 10:44:00 C 12 41 08.437 -20 45 06.50 – V F51
2021-04-18 06:00:00 C 12 56 30.04 -20 49 09.4 – u 807
2021-04-18 06:03:23 C 12 56 32.51 -20 49 09.6 – u 807
2021-04-18 06:06:48 C 12 56 34.94 -20 49 09.7 – u 807
2021-04-18 06:07:15 C 12 56 42.83 -20 52 16.4 – V I52
2021-04-18 06:09:40 C 12 56 44.56 -20 52 16.3 – V I52
2021-04-18 06:12:05 C 12 56 46.24 -20 52 17.1 – V I52
2021-04-18 06:15:29 C 12 56 57.207 -20 51 28.85 – V 568
2021-04-18 06:19:43 C 12 57 00.263 -20 51 30.60 – V 568
2021-04-18 10:12:28 C 12 59 43.519 -20 52 30.67 – V F51
2021-04-18 10:34:14 C 12 59 58.544 -20 52 32.51 – V F51
2021-04-19 11:30:03 C 13 17 17.78 -20 49 09.6 – V 474
2021-04-19 11:32:10 C 13 17 19.08 -20 49 09.2 – V 474
2021-04-19 11:34:17 C 13 17 20.34 -20 49 08.9 – V 474