2021 HH1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4331336000
Semi-major axis (a)1.3601836000 AU
Inclination (i)14.01716000°
Long. of Asc. Node (Ω)49.36588000°
Arg. of Perihelion (ω)248.46108000°
Mean Anomaly (M)281.88967000°
Mean Motion (n)0.6213092200°/day
Perihelion dist (q)0.77104240 AU
Aphelion dist (Q)1.94932480 AU
Orbital Period1.58634010 yr
Physical Parameters
H (abs. magnitude)23.38
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.480″
Uncertainty8
Orbit TypeApollo
MOID0.031378 AU
Observations Used73
Oppositions1
Arc Total
First Observation Used
Last Observation Used2021-04-30
Observations (75)
Date Type RA Dec Mag Band Observatory
2021-04-25 21:17:48 C 17 35 50.05 +31 14 55.7 V 033
2021-04-25 21:18:57 C 17 35 51.05 +31 14 59.8 V 033
2021-04-25 21:20:11 C 17 35 52.11 +31 15 04.0 V 033
2021-04-25 21:21:36 C 17 35 53.33 +31 15 08.3 V 033
2021-04-26 02:35:44 C 17 40 27.84 +31 32 05.6 V 033
2021-04-26 02:36:53 C 17 40 28.81 +31 32 09.6 V 033
2021-04-26 02:38:03 C 17 40 29.87 +31 32 13.3 V 033
2021-04-26 02:39:16 C 17 40 30.97 +31 32 16.8 V 033
2021-04-26 23:51:50 C 18 02 10.44 +32 37 58.0 V 033
2021-04-26 23:52:55 C 18 02 11.64 +32 38 01.9 V 033
2021-04-26 23:54:00 C 18 02 12.82 +32 38 05.4 V 033
2021-04-26 23:55:05 C 18 02 14.01 +32 38 08.9 V 033
2021-04-26 23:56:10 C 18 02 15.21 +32 38 12.2 V 033
2021-04-27 01:44:13 C 18 04 15.12 +32 43 51.6 V 033
2021-04-27 01:45:19 C 18 04 16.32 +32 43 55.1 V 033
2021-04-27 01:46:24 C 18 04 17.54 +32 43 58.3 V 033
2021-04-27 01:47:28 C 18 04 18.74 +32 44 01.8 V 033
2021-04-27 01:48:33 C 18 04 19.95 +32 44 05.2 V 033
2021-04-27 01:49:38 C 18 04 21.14 +32 44 08.2 V 033
2021-04-27 22:29:47 C 18 30 41.98 +33 41 19.1 V 033
2021-04-27 22:30:47 C 18 30 43.39 +33 41 21.8 V 033
2021-04-27 22:31:47 C 18 30 44.76 +33 41 24.5 V 033
2021-04-30 10:28:15 C 20 19 27.47 +33 53 34.5 V I52
2021-04-30 10:29:40 C 20 19 30.49 +33 53 30.1 V I52
2021-04-30 10:31:05 C 20 19 33.53 +33 53 25.3 V I52