IAA RAS IAA Minor Planet Database

2021 HR1

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5833105803 ± 3.80e-05
Semi-major axis (a)2.2914698529 AU ± 2.01e-04
Inclination (i)11.58689308° ± 4.26e-04
Long. of Asc. Node (Ω)110.89839309° ± 8.59e-04
Arg. of Perihelion (ω)171.87212306° ± 8.30e-04
Mean Anomaly (M)98.56044356° ± 6.06e-02
Mean Motion (n)0.2841456778°/day ± 3.74e-05
Perihelion dist (q)0.95483124 AU ± 1.21e-04
Aphelion dist (Q)3.62810846 AU ± 3.30e-04
Orbital Period3.46873579 yr ± 4.57e-04
Physical Parameters
H (abs. magnitude)21.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.217″
Uncertainty2
Orbit TypeApollo
MOID0.056100 AU
Observations Used73
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-17
Last Observation Used2021-05-29
Observations (81)
Date Type RA Dec Mag Band Observatory
2021-04-17 09:12:27 C 15 49 21.93 +25 34 45.6 – V G96
2021-04-17 09:20:48 C 15 49 22.67 +25 34 58.3 – V G96
2021-04-17 09:29:09 C 15 49 23.43 +25 35 11.4 – V G96
2021-04-17 09:37:31 C 15 49 24.18 +25 35 23.4 – V G96
2021-04-17 11:18:31 C 15 49 33.12 +25 37 55.1 – V I52
2021-04-17 11:27:21 C 15 49 33.92 +25 38 08.3 – V I52
2021-04-17 11:36:12 C 15 49 34.71 +25 38 21.0 – V I52
2021-04-18 07:16:36 C 15 51 30.33 +26 08 18.7 – V I52
2021-04-18 07:25:27 C 15 51 31.16 +26 08 32.6 – V I52
2021-04-19 07:10:36 C 15 53 52.77 +26 45 19.1 – V V06
2021-04-19 07:13:50 C 15 53 53.11 +26 45 24.6 – V V06
2021-04-19 07:20:17 C 15 53 53.69 +26 45 34.3 – V V06
2021-04-20 07:00:12 C 15 56 19.46 +27 22 52.3 – o 691
2021-04-20 07:11:12 C 15 56 20.59 +27 23 09.7 – o 691
2021-04-20 07:22:12 C 15 56 21.62 +27 23 28.0 – o 691
2021-04-21 06:13:07 C 15 58 47.36 +28 00 05.0 – V 291
2021-04-21 06:20:52 C 15 58 48.16 +28 00 17.9 – V 291
2021-04-21 06:28:30 C 15 58 48.94 +28 00 30.6 – V 291
2021-04-23 06:45:06 C 16 04 13.01 +29 20 03.0 – V 291
2021-04-23 07:02:28 C 16 04 14.92 +29 20 32.9 – V 291
2021-04-23 07:19:57 C 16 04 16.83 +29 21 02.8 – V 291
2021-04-23 08:35:54 C 16 04 25.10 +29 23 11.5 – V I52
2021-04-23 08:43:48 C 16 04 25.99 +29 23 25.1 – V I52
2021-04-23 08:51:42 C 16 04 26.81 +29 23 38.3 – V I52
2021-04-24 04:42:19 C 16 06 49.37 +29 57 04.9 – o 691
2021-04-24 05:03:56 C 16 06 51.99 +29 57 42.9 – o 691
2021-04-24 06:12:14 C 16 06 59.90 +29 59 42.1 – V 291
2021-04-24 06:37:01 C 16 07 02.76 +30 00 25.4 – V 291
2021-04-24 07:01:51 C 16 07 05.61 +30 01 08.6 – V 291
2021-04-24 11:15:24 C 16 07 34.42 +30 08 22.6 – V I52
2021-04-24 11:18:25 C 16 07 34.78 +30 08 27.8 – V I52
2021-04-25 09:02:58 C 16 10 17.82 +30 46 01.2 – V I52
2021-04-25 09:06:36 C 16 10 18.21 +30 46 07.1 – V I52
2021-04-25 09:10:14 C 16 10 18.63 +30 46 13.9 – V I52
2021-04-25 09:13:51 C 16 10 19.06 +30 46 20.5 – V I52
2021-04-26 08:46:03 C 16 13 21.89 +31 27 38.7 – V 695
2021-04-26 08:53:16 C 16 13 22.79 +31 27 51.6 – V 695
2021-04-26 09:01:56 C 16 13 23.85 +31 28 06.9 – V 695
2021-04-30 07:38:15 C 16 27 07.36 +34 21 21.3 – V I52
2021-04-30 07:41:53 C 16 27 07.91 +34 21 28.2 – V I52
2021-04-30 07:47:34 C 16 27 08.77 +34 21 38.8 – V I52
2021-05-03 08:59:41 C 16 39 46.86 +36 43 35.8 – V G96
2021-05-03 09:07:14 C 16 39 48.21 +36 43 50.8 – V G96
2021-05-03 09:14:44 C 16 39 49.52 +36 44 05.9 – V G96
2021-05-03 09:22:14 C 16 39 50.86 +36 44 20.7 – V G96
2021-05-05 08:30:05 C 16 49 12.94 +38 19 04.8 – V I52
2021-05-05 08:31:54 C 16 49 13.28 +38 19 08.7 – V I52
2021-05-05 08:33:43 C 16 49 13.65 +38 19 12.4 – V I52
2021-05-05 08:39:16 C 16 49 14.75 +38 19 23.8 – V I52
2021-05-07 07:24:13 C 16 59 41.48 +39 55 31.3 – V I52