2021 HE3

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.1098942556 ± 3.17e-04
Semi-major axis (a)1.1682268451 AU ± 5.37e-04
Inclination (i)15.48549559° ± 2.71e-02
Long. of Asc. Node (Ω)211.57505260° ± 1.73e-03
Arg. of Perihelion (ω)321.81870616° ± 5.66e-02
Mean Anomaly (M)256.92846231° ± 9.66e-01
Mean Motion (n)0.7805873401°/day ± 5.39e-04
Perihelion dist (q)1.03984543 AU ± 6.05e-04
Aphelion dist (Q)1.29660826 AU ± 7.02e-04
Orbital Period1.26267265 yr ± 8.71e-04
Physical Parameters
H (abs. magnitude)25.25
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.364″
Uncertainty3
Orbit TypeAmor
MOID0.056026 AU
Observations Used22
Oppositions1
Arc Total2021-2021
First Observation Used2021-04-30
Last Observation Used2021-05-07
Observations (22)
Date Type RA Dec Mag Band Observatory
2021-04-30 07:10:32 C 13 39 39.798 +18 31 45.52 U F51
2021-04-30 07:30:03 C 13 39 43.094 +18 33 41.56 U F51
2021-04-30 07:49:33 C 13 39 46.338 +18 35 36.60 U F51
2021-05-01 03:11:32 C 13 43 28.28 +20 23 53.5 u H21
2021-05-01 03:21:01 C 13 43 29.80 +20 24 44.9 u H21
2021-05-01 03:32:52 C 13 43 31.76 +20 25 49.4 u H21
2021-05-01 09:18:32 C 13 44 29.45 +20 56 35.9 V H01
2021-05-01 09:25:06 C 13 44 30.78 +20 57 13.7 V I52
2021-05-01 09:27:01 C 13 44 30.86 +20 57 19.7 V H01
2021-05-01 09:32:28 C 13 44 31.92 +20 57 51.5 V I52
2021-05-01 09:38:35 C 13 44 32.79 +20 58 19.3 V H01
2021-05-01 09:48:56 C 13 44 34.54 +20 59 12.7 V H01
2021-05-02 21:14:11 C 13 50 59.44 +23 52 12.5 V 033
2021-05-02 21:42:04 C 13 51 03.66 +23 54 19.9 V 033
2021-05-02 21:45:14 C 13 51 04.13 +23 54 34.0 V 033
2021-05-02 21:48:23 C 13 51 04.61 +23 54 48.2 V 033
2021-05-06 04:52:57 C 14 03 32.52 +28 59 39.2 u H21
2021-05-06 05:07:23 C 14 03 34.33 +29 00 26.0 u H21
2021-05-06 05:17:05 C 14 03 35.53 +29 00 57.0 u H21
2021-05-07 04:28:26 C 14 06 53.91 +30 12 23.2 u H21
2021-05-07 04:40:30 C 14 06 55.31 +30 12 58.3 u H21
2021-05-07 04:45:13 C 14 06 55.82 +30 13 12.3 u H21