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
2021-04-17 10:22:25 C 16 08 43.08 +23 41 59.1 V G96
2021-04-17 10:30:48 C 16 08 44.67 +23 42 11.3 V G96
2021-04-17 10:39:09 C 16 08 46.27 +23 42 23.5 V G96
2021-04-17 10:47:29 C 16 08 47.85 +23 42 35.4 V G96
2021-04-17 11:28:05 C 16 08 55.60 +23 43 33.9 V G96
2021-04-17 11:28:50 C 16 08 55.73 +23 43 34.8 V G96
2021-04-17 11:29:35 C 16 08 55.90 +23 43 35.7 V G96
2021-04-18 01:37:47 C 16 12 00.63 +24 04 42.5 d L01
2021-04-18 01:44:31 C 16 12 02.07 +24 04 53.4 d L01
2021-04-18 01:51:52 C 16 12 03.59 +24 05 03.7 d L01
2021-04-18 01:59:13 C 16 12 05.16 +24 05 15.9 d L01
2021-04-18 07:34:47 C 16 13 24.29 +24 14 10.6 V I52
2021-04-18 07:39:13 C 16 13 25.25 +24 14 18.2 V I52
2021-04-18 07:43:38 C 16 13 26.20 +24 14 24.6 V I52
2021-04-19 07:24:50 C 16 19 16.45 +24 53 31.2 q H36
2021-04-19 07:37:54 C 16 19 19.64 +24 53 53.8 q H36
2021-04-19 08:04:01 C 16 19 26.11 +24 54 39.7 q H36
2021-04-21 00:57:41 C 16 31 43.69 +26 11 29.2 V 033
2021-04-21 01:00:40 C 16 31 44.67 +26 11 35.3 V 033
2021-04-21 01:03:40 C 16 31 45.61 +26 11 41.5 V 033
2021-04-22 21:27:12 C 16 49 36.37 +27 51 30.2 V 033
2021-04-22 21:29:22 C 16 49 37.37 +27 51 35.9 V 033
2021-04-22 21:31:32 C 16 49 38.35 +27 51 41.5 V 033
2021-04-22 21:34:15 C 16 49 39.61 +27 51 48.7 V 033
2021-04-23 07:23:19 C 16 54 27.38 +28 17 16.4 V I52
2021-04-23 07:25:44 C 16 54 28.60 +28 17 22.3 V I52
2021-04-23 07:28:10 C 16 54 29.79 +28 17 28.9 V I52
2021-04-23 21:03:30 C 17 01 48.10 +28 52 45.1 V 033
2021-04-23 21:05:04 C 17 01 48.99 +28 52 49.6 V 033
2021-04-23 21:06:40 C 17 01 49.87 +28 52 54.3 V 033
2021-04-23 21:08:19 C 17 01 50.85 +28 52 58.4 V 033
2021-04-23 21:42:17 C 17 02 10.62 +28 54 44.3 V 104
2021-04-23 21:50:52 C 17 02 15.40 +28 55 09.0 V 104
2021-04-24 02:46:58 C 17 05 01.78 +29 08 55.3 V 033
2021-04-24 02:48:33 C 17 05 02.66 +29 08 59.9 V 033
2021-04-24 02:50:08 C 17 05 03.58 +29 09 04.4 V 033
2021-04-24 11:33:11 C 17 10 25.50 +29 34 17.8 V I52
2021-04-24 11:33:47 C 17 10 25.87 +29 34 20.0 V I52
2021-04-24 11:34:23 C 17 10 26.22 +29 34 21.5 V I52
2021-04-24 11:35:00 C 17 10 26.61 +29 34 23.1 V I52
2021-04-24 21:52:49 C 17 17 28.95 +30 03 32.8 V 033
2021-04-24 21:54:13 C 17 17 29.92 +30 03 37.0 V 033
2021-04-24 21:55:38 C 17 17 30.91 +30 03 40.9 V 033
2021-04-24 21:57:13 C 17 17 32.00 +30 03 46.4 V 033
2021-04-24 21:58:38 C 17 17 32.97 +30 03 50.8 V 033
2021-04-25 09:23:45 C 17 25 57.61 +30 39 16.6 V I52
2021-04-25 09:24:34 C 17 25 57.99 +30 39 18.7 V I52
2021-04-25 09:25:23 C 17 25 58.58 +30 39 21.4 V I52
2021-04-25 09:26:11 C 17 25 59.41 +30 39 24.3 V I52
2021-04-25 21:16:38 C 17 35 49.05 +31 14 51.6 V 033