IAA RAS IAA Minor Planet Database

2021 HL

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3977822000
Semi-major axis (a)1.6810572000 AU
Inclination (i)1.75847000°
Long. of Asc. Node (Ω)192.49966000°
Arg. of Perihelion (ω)12.02626000°
Mean Anomaly (M)40.11033000°
Mean Motion (n)0.4521997700°/day
Perihelion dist (q)1.01236260 AU
Aphelion dist (Q)2.34975180 AU
Orbital Period2.17958460 yr
Physical Parameters
H (abs. magnitude)27.60
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date—
RMS Residual0.680″
Uncertainty6
Orbit TypeAmor
MOID0.011042 AU
Observations Used40
Oppositions1
Arc Total—
First Observation Used—
Last Observation Used2021-04-24
Observations (45)
Date Type RA Dec Mag Band Observatory
2021-04-17 06:54:04 C 13 32 58.84 +32 47 57.7 – V G96
2021-04-17 07:02:27 C 13 33 21.31 +32 47 22.5 – V G96
2021-04-17 07:10:50 C 13 33 43.79 +32 46 45.9 – V G96
2021-04-17 07:19:15 C 13 34 06.44 +32 46 08.5 – V G96
2021-04-17 08:24:08 C 13 37 01.52 +32 40 58.5 – V I52
2021-04-17 08:26:22 C 13 37 07.58 +32 40 47.1 – V I52
2021-04-17 08:28:37 C 13 37 13.62 +32 40 35.5 – V I52
2021-04-17 08:30:50 C 13 37 19.66 +32 40 23.9 – V I52
2021-04-17 10:15:53 C 13 42 05.94 +32 30 28.2 – V I52
2021-04-17 10:18:06 C 13 42 12.05 +32 30 14.5 – V I52
2021-04-17 10:20:19 C 13 42 18.16 +32 30 00.6 – V I52
2021-04-17 10:22:32 C 13 42 24.30 +32 29 46.9 – V I52
2021-04-17 21:37:32 C 14 15 49.00 +31 11 01.7 – V J95
2021-04-17 21:47:09 C 14 16 15.29 +31 09 50.0 – V J95
2021-04-17 21:59:52 C 14 16 50.09 +31 08 14.2 – V J95
2021-04-17 22:10:53 C 14 17 20.04 +31 06 51.1 – V J95
2021-04-18 00:15:00 C 14 22 44.19 +30 51 25.2 – d L01
2021-04-18 00:16:43 C 14 22 48.73 +30 51 09.8 – d L01
2021-04-18 00:18:26 C 14 22 53.25 +30 50 54.6 – d L01
2021-04-18 00:20:08 C 14 22 57.78 +30 50 39.3 – d L01
2021-04-18 00:24:26 C 14 23 09.12 +30 50 01.1 – d L01
2021-04-18 05:59:27 C 14 39 13.17 +29 59 57.6 – V I52
2021-04-18 06:00:24 C 14 39 15.55 +29 59 48.5 – V I52
2021-04-18 06:01:20 C 14 39 18.00 +29 59 39.9 – V I52
2021-04-18 06:02:16 C 14 39 20.40 +29 59 31.3 – V I52
2021-04-18 21:26:41 C 15 19 15.29 +27 03 51.0 – V Z99
2021-04-18 21:31:11 C 15 19 25.90 +27 02 59.9 – V Z99
2021-04-18 21:35:43 C 15 19 36.60 +27 02 08.9 – V Z99
2021-04-19 08:34:32 C 15 44 30.35 +24 51 22.4 – V I52
2021-04-19 08:37:48 C 15 44 36.79 +24 50 41.7 – V I52
2021-04-19 08:39:26 C 15 44 40.04 +24 50 21.3 – V I52
2021-04-19 22:07:33 C 16 11 55.36 +21 55 35.2 – V 033
2021-04-19 22:08:17 C 16 11 56.64 +21 55 26.7 – V 033
2021-04-19 22:09:02 C 16 11 57.97 +21 55 17.7 – V 033
2021-04-21 00:51:30 C 16 53 40.41 +16 42 23.3 – V 033
2021-04-21 00:52:24 C 16 53 41.51 +16 42 14.1 – V 033
2021-04-21 00:53:19 C 16 53 42.61 +16 42 04.3 – V 033
2021-04-21 00:54:14 C 16 53 43.75 +16 41 54.7 – V 033
2021-04-21 00:55:09 C 16 53 44.84 +16 41 45.1 – V 033
2021-04-23 02:12:34 C 17 42 25.19 +09 29 57.6 – V 033
2021-04-23 02:13:58 C 17 42 26.11 +09 29 47.9 – V 033
2021-04-23 02:15:24 C 17 42 27.03 +09 29 37.9 – V 033
2021-04-24 02:00:52 C 17 57 45.45 +07 01 58.8 – V 033
2021-04-24 02:02:36 C 17 57 46.34 +07 01 49.3 – V 033
2021-04-24 02:04:21 C 17 57 47.20 +07 01 40.0 – V 033