2021 HQ2

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5188642674 ± 1.94e-06
Semi-major axis (a)2.1737717731 AU ± 8.85e-06
Inclination (i)20.67798952° ± 4.36e-05
Long. of Asc. Node (Ω)217.15875945° ± 1.92e-05
Arg. of Perihelion (ω)59.55648712° ± 2.15e-05
Mean Anomaly (M)138.06330619° ± 3.05e-03
Mean Motion (n)0.3075327407°/day ± 1.88e-06
Perihelion dist (q)1.04587927 AU ± 5.99e-06
Aphelion dist (Q)3.30166427 AU ± 1.41e-05
Orbital Period3.20494748 yr ± 1.96e-05
Physical Parameters
H (abs. magnitude)21.17
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.227″
Uncertainty1
Orbit TypeAmor
MOID0.177291 AU
Observations Used75
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-18
Last Observation Used2021-10-11
Observations (77)
Date Type RA Dec Mag Band Observatory
2021-04-18 13:24:12 C 16 22 34.681 -21 31 54.12 V F51
2021-04-20 10:22:46 C 16 30 03.98 -19 31 14.3 V G96
2021-04-20 10:30:30 C 16 30 05.25 -19 30 52.3 V G96
2021-04-20 10:38:12 C 16 30 06.49 -19 30 30.4 V G96
2021-04-20 10:45:53 C 16 30 07.76 -19 30 08.1 V G96
2021-04-20 11:28:32 C 16 30 14.68 -19 28 06.5 V V06
2021-04-20 11:31:06 C 16 30 15.09 -19 27 59.4 V V06
2021-04-20 11:33:40 C 16 30 15.50 -19 27 52.1 V V06
2021-04-20 11:36:13 C 16 30 15.94 -19 27 44.8 V V06
2021-04-20 23:47:51 C 16 32 22.49 -18 52 33.0 V L01
2021-04-20 23:52:21 C 16 32 23.25 -18 52 20.0 V L01
2021-04-20 23:56:50 C 16 32 23.98 -18 52 06.8 V L01
2021-04-21 00:01:20 C 16 32 24.70 -18 51 53.5 V L01
2021-04-21 00:05:49 C 16 32 25.47 -18 51 40.5 V L01
2021-04-21 01:32:13 C 16 32 39.84 -18 47 28.7 V 033
2021-04-21 01:34:22 C 16 32 40.19 -18 47 21.7 V 033
2021-04-21 01:36:32 C 16 32 40.54 -18 47 15.5 V 033
2021-04-21 01:38:45 C 16 32 40.93 -18 47 09.2 V 033
2021-04-21 08:06:05 C 16 33 48.65 -18 27 53.3 V I52
2021-04-21 08:09:30 C 16 33 49.17 -18 27 43.2 V I52
2021-04-21 08:24:35 C 16 33 51.58 -18 26 58.2 V H01
2021-04-21 08:37:11 C 16 33 53.67 -18 26 20.6 V H01
2021-04-21 08:45:46 C 16 33 55.09 -18 25 54.9 V H01
2021-04-21 08:59:22 C 16 33 57.34 -18 25 14.2 V H01
2021-04-21 09:08:08 C 16 33 59.11 -18 24 47.9 V 654
2021-04-21 09:47:45 C 16 34 05.68 -18 22 49.0 V 654
2021-04-21 10:20:44 C 16 34 11.15 -18 21 09.9 V 654
2021-04-21 14:43:35 C 16 34 57.69 -18 07 19.9 q E23
2021-04-21 15:06:06 C 16 35 01.39 -18 06 11.1 q E23
2021-04-21 15:28:35 C 16 35 05.11 -18 05 02.4 q E23
2021-04-22 13:52:07 C 16 39 00.819 -16 55 24.13 U F51
2021-04-22 14:08:50 C 16 39 03.645 -16 54 30.20 U F51
2021-04-22 14:25:34 C 16 39 06.485 -16 53 36.08 U F51
2021-04-25 07:05:52 C 16 50 58.32 -13 08 43.5 u 807
2021-04-25 07:10:26 C 16 50 59.13 -13 08 26.5 u 807
2021-04-25 08:27:45 C 16 51 14.37 -13 04 11.9 V I52
2021-04-25 08:28:57 C 16 51 14.63 -13 04 07.3 V I52
2021-04-26 01:22:14 C 16 54 26.71 -12 00 02.1 V 033
2021-04-26 01:23:13 C 16 54 26.89 -11 59 58.0 V 033
2021-04-27 00:44:03 C 16 58 58.28 -10 27 24.0 V 033
2021-04-27 00:44:43 C 16 58 58.39 -10 27 21.3 V 033
2021-05-01 11:24:22 C 17 20 45.59 -02 30 20.4 V I52
2021-05-01 11:25:49 C 17 20 45.86 -02 30 13.2 V I52
2021-05-01 11:27:16 C 17 20 46.17 -02 30 05.7 V I52
2021-05-03 23:02:19 C 17 33 48.45 +02 30 34.2 V B67
2021-05-03 23:10:05 C 17 33 50.09 +02 31 15.9 V B67
2021-05-03 23:17:47 C 17 33 51.79 +02 31 55.8 V B67
2021-05-04 11:18:33 C 17 36 31.27 +03 35 05.4 V I52
2021-05-04 11:18:54 C 17 36 31.34 +03 35 07.7 V I52
2021-05-04 11:19:16 C 17 36 31.42 +03 35 09.6 V I52