2021 HB1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5583035000
Semi-major axis (a)2.1180417000 AU
Inclination (i)7.39406000°
Long. of Asc. Node (Ω)32.08315000°
Arg. of Perihelion (ω)221.07281000°
Mean Anomaly (M)164.55699000°
Mean Motion (n)0.3197439200°/day
Perihelion dist (q)0.93553160 AU
Aphelion dist (Q)3.30055180 AU
Orbital Period3.08249060 yr
Physical Parameters
H (abs. magnitude)25.00
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.230″
Uncertainty7
Orbit TypeApollo
MOID0.008899 AU
Observations Used26
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-04-27
Observations (26)
Date Type RA Dec Mag Band Observatory
2021-04-17 06:02:59 C 11 17 47.064 +18 26 55.88 U F51
2021-04-17 06:21:20 C 11 17 42.028 +18 26 42.66 U F51
2021-04-17 06:58:01 C 11 17 31.950 +18 26 15.98 U F51
2021-04-18 05:52:58 C 11 11 31.711 +18 06 36.06 V 568
2021-04-18 05:54:23 C 11 11 31.284 +18 06 34.79 V 568
2021-04-18 05:55:52 C 11 11 30.836 +18 06 33.49 V 568
2021-04-19 01:04:43 C 11 05 53.61 +17 48 17.5 V 807
2021-04-19 01:13:10 C 11 05 50.77 +17 48 08.2 V 807
2021-04-19 01:21:38 C 11 05 47.94 +17 47 59.0 V 807
2021-04-19 03:23:02 C 11 05 11.47 +17 43 50.6 V I52
2021-04-19 03:37:33 C 11 05 06.56 +17 43 35.3 V I52
2021-04-19 04:40:02 C 11 04 45.42 +17 42 25.3 o 691
2021-04-19 05:03:28 C 11 04 37.38 +17 41 57.8 o 691
2021-04-19 05:27:27 C 11 04 29.10 +17 41 29.6 o 691
2021-04-20 04:11:03 C 10 56 55.42 +17 12 12.7 V I52
2021-04-20 04:18:05 C 10 56 52.71 +17 12 03.0 V I52
2021-04-20 04:29:21 C 10 56 48.35 +17 11 46.8 V I52
2021-04-20 04:34:12 C 10 56 46.50 +17 11 40.3 V I52
2021-04-25 20:53:39 C 09 38 57.14 +10 36 51.8 V 033
2021-04-25 20:54:48 C 09 38 56.08 +10 36 45.8 V 033
2021-04-25 20:55:58 C 09 38 55.01 +10 36 39.5 V 033
2021-04-25 20:57:08 C 09 38 53.92 +10 36 33.0 V 033
2021-04-27 20:09:53 C 08 48 30.67 +05 21 08.7 V 033
2021-04-27 20:10:48 C 08 48 29.48 +05 21 01.1 V 033
2021-04-27 20:11:43 C 08 48 28.29 +05 20 53.4 V 033
2021-04-27 20:12:38 C 08 48 27.13 +05 20 45.7 V 033