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
2021-05-04 11:19:37 C 17 36 31.48 +03 35 11.4 V I52
2021-05-06 09:22:20 C 17 47 03.84 +07 42 13.9 V I52
2021-05-06 09:22:41 C 17 47 03.97 +07 42 16.4 V I52
2021-05-06 09:23:02 C 17 47 04.02 +07 42 17.9 V I52
2021-05-06 09:23:24 C 17 47 04.12 +07 42 19.7 V I52
2021-05-08 07:17:14 C 17 57 53.14 +11 53 57.8 V I52
2021-05-08 07:17:35 C 17 57 53.21 +11 54 00.4 V I52
2021-05-08 07:17:56 C 17 57 53.27 +11 54 02.2 V I52
2021-05-08 07:18:17 C 17 57 53.36 +11 54 04.1 V I52
2021-05-09 01:29:57 C 18 02 13.60 +13 34 10.7 V K87
2021-05-09 01:43:54 C 18 02 16.92 +13 35 27.7 V K87
2021-05-19 11:01:18 C 19 05 27.58 +34 24 23.3 V I52
2021-05-19 11:01:54 C 19 05 27.73 +34 24 26.0 V I52
2021-05-19 11:02:31 C 19 05 27.87 +34 24 28.3 V I52
2021-05-19 11:03:07 C 19 05 28.01 +34 24 31.1 V I52
2021-05-19 11:06:08 C 19 05 28.80 +34 24 43.5 V I52
2021-05-24 10:55:10 C 19 36 52.52 +41 47 06.1 V I52
2021-05-24 10:58:11 C 19 36 53.26 +41 47 15.9 V I52
2021-06-06 10:03:28 C 20 54 16.27 +53 08 49.6 V I52
2021-06-06 10:08:22 C 20 54 17.29 +53 08 56.8 V I52
2021-08-29 06:05:35 C 23 54 57.37 +49 07 20.0 u H21
2021-08-29 06:15:47 C 23 54 57.07 +49 07 08.0 u H21
2021-08-29 06:25:43 C 23 54 56.81 +49 06 56.5 u H21
2021-10-11 10:37:11 C 23 34 23.244 +21 21 58.62 U F51
2021-10-11 10:54:33 C 23 34 23.206 +21 21 31.85 U F51
2021-10-11 11:12:02 C 23 34 23.197 +21 21 05.05 U F51
2021-10-11 11:29:29 C 23 34 23.171 +21 20 38.19 U F51