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
2021-05-07 07:26:59 C 16 59 42.11 +39 55 37.1 V I52
2021-05-07 07:34:56 C 16 59 43.90 +39 55 54.0 V I52
2021-05-07 07:41:10 C 16 59 45.32 +39 56 07.4 V I52
2021-05-10 06:24:30 C 17 18 13.30 +42 24 10.7 V I52
2021-05-10 06:25:37 C 17 18 13.62 +42 24 13.0 V I52
2021-05-10 06:26:43 C 17 18 14.00 +42 24 15.9 V I52
2021-05-10 06:29:37 C 17 18 14.72 +42 24 22.2 V I52
2021-05-12 09:26:42 C 17 33 56.49 +44 11 18.9 V I52
2021-05-12 09:27:49 C 17 33 56.83 +44 11 21.3 V I52
2021-05-12 09:28:55 C 17 33 57.18 +44 11 23.1 V I52
2021-05-12 09:30:01 C 17 33 57.52 +44 11 25.6 V I52
2021-05-15 09:41:44 C 18 00 36.57 +46 37 43.6 V G96
2021-05-15 09:50:35 C 18 00 40.07 +46 38 00.9 V G96
2021-05-15 09:59:29 C 18 00 43.56 +46 38 17.9 V G96
2021-05-15 10:08:10 C 18 00 46.99 +46 38 35.1 V G96
2021-05-22 11:00:58 C 19 28 40.44 +50 46 39.7 V I52
2021-05-22 11:02:23 C 19 28 41.29 +50 46 40.2 V I52
2021-05-22 11:03:49 C 19 28 42.21 +50 46 41.5 V I52
2021-05-22 11:05:14 C 19 28 43.04 +50 46 42.6 V I52
2021-05-25 07:31:32 S 20 14 30.161 +51 03 28.37 L C51
2021-05-25 09:05:47 S 20 15 36.091 +51 03 04.46 L C51
2021-05-25 10:39:51 S 20 16 42.127 +51 02 35.92 L C51
2021-05-25 10:52:09 C 20 16 53.80 +51 03 20.9 V I52
2021-05-25 10:56:52 C 20 16 57.04 +51 03 19.1 V I52
2021-05-25 13:48:10 S 20 18 54.295 +51 01 34.43 L C51
2021-05-25 15:22:14 S 20 20 00.425 +51 00 58.68 L C51
2021-05-25 18:30:34 S 20 22 13.241 +50 59 42.22 L C51
2021-05-29 11:01:50 C 21 25 25.18 +49 14 38.2 V I52
2021-05-29 11:03:15 C 21 25 26.16 +49 14 34.9 V I52
2021-05-29 11:04:40 C 21 25 27.14 +49 14 32.8 V I52
2021-05-29 11:06:05 C 21 25 28.12 +49 14 31.3 V I52