2009 HA21

NEO PHA MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7290759947 ± 1.38e-07
Semi-major axis (a)1.4606978645 AU ± 1.65e-08
Inclination (i)6.40564494° ± 1.78e-05
Long. of Asc. Node (Ω)205.39161033° ± 3.38e-05
Arg. of Perihelion (ω)219.92203008° ± 4.87e-05
Mean Anomaly (M)202.98561791° ± 1.24e-05
Mean Motion (n)0.5583052152°/day ± 9.49e-09
Perihelion dist (q)0.39573812 AU ± 2.02e-07
Aphelion dist (Q)2.52565761 AU ± 2.04e-07
Orbital Period1.76538971 yr ± 3.00e-08
Physical Parameters
H (abs. magnitude)20.85
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.281″
Uncertainty0
Orbit TypeApollo
MOID0.046179 AU
Observations Used90
Oppositions6
Arc Total2009-2023
First Observation Used2009-04-20
Last Observation Used2023-04-16
Observations (101)
Date Type RA Dec Mag Band Observatory
2016-04-02 10:00:00 C 12 56 06.90 -12 53 23.7 q G96
2016-04-02 10:03:50 C 12 56 05.98 -12 53 14.3 R G45
2016-04-02 10:04:06 C 12 56 06.03 -12 53 13.6 q G96
2016-04-02 10:22:20 C 12 56 02.17 -12 52 26.3 q I52
2016-04-02 10:22:46 C 12 56 02.10 -12 52 25.2 q I52
2016-04-02 10:23:12 C 12 56 02.03 -12 52 24.1 q I52
2016-04-02 10:23:48 C 12 56 01.91 -12 52 22.7 q I52
2016-04-03 09:31:56 C 12 51 31.87 -11 55 08.2 R G45
2016-04-03 09:39:12 C 12 51 30.45 -11 54 51.0 R G45
2016-04-03 09:46:47 C 12 51 28.99 -11 54 32.4 R G45
2016-04-03 09:54:26 C 12 51 27.51 -11 54 14.3 R G45
2016-04-03 10:02:06 C 12 51 26.05 -11 53 55.8 R G45
2016-04-04 22:32:26 C 12 45 05.92 -10 31 41.1 q 113
2016-04-04 22:37:15 C 12 45 05.11 -10 31 30.7 q 113
2016-04-04 22:42:04 C 12 45 04.18 -10 31 20.1 q 113
2016-04-06 07:31:47 C 12 40 01.63 -09 24 39.5 o 291
2016-04-06 07:33:37 C 12 40 01.34 -09 24 36.0 o 291
2016-04-06 07:35:29 C 12 40 01.07 -09 24 32.6 o 291
2016-04-06 22:20:55 C 12 37 56.63 -08 56 50.2 q 113
2016-04-06 22:28:09 C 12 37 55.60 -08 56 36.1 q 113
2016-04-06 22:35:23 C 12 37 54.60 -08 56 23.3 q 113
2016-04-07 07:07:49 C 12 36 44.75 -08 40 47.3 q H45
2016-04-07 07:09:33 C 12 36 44.54 -08 40 43.6 q H45
2016-04-07 07:11:20 C 12 36 44.31 -08 40 41.0 q H45
2016-04-07 07:12:53 C 12 36 44.07 -08 40 37.3 q H45
2016-04-07 07:14:28 C 12 36 43.85 -08 40 34.9 q H45
2016-04-07 07:16:06 C 12 36 43.60 -08 40 31.4 q H45
2016-04-10 08:26:12 C 12 28 10.438 -06 42 45.47 L F51
2016-04-10 08:44:48 C 12 28 08.404 -06 42 18.77 L F51
2016-04-10 09:03:29 C 12 28 06.362 -06 41 51.98 L F51
2016-04-16 03:21:31 C 12 16 54.95 -03 59 29.5 o 291
2016-04-16 03:25:33 C 12 16 54.61 -03 59 23.2 o 291
2016-04-16 03:29:37 C 12 16 54.39 -03 59 20.5 o 291
2016-04-17 03:28:41 C 12 15 28.42 -03 37 24.1 o 691
2016-04-17 03:34:15 C 12 15 28.05 -03 37 19.1 o 691
2016-04-17 03:39:50 C 12 15 27.60 -03 37 14.0 o 691
2016-04-27 05:13:31 C 12 06 43.95 -01 05 53.1 o 691
2016-04-27 05:34:15 C 12 06 43.49 -01 05 44.9 o 691
2016-04-27 05:55:07 C 12 06 43.03 -01 05 36.4 o 691
2016-04-29 05:19:48 C 12 05 56.79 -00 47 15.5 o 691
2016-04-29 05:40:36 C 12 05 56.40 -00 47 07.4 o 691
2016-04-29 06:00:30 C 12 05 56.02 -00 47 00.1 o 691
2016-04-30 06:03:28 C 12 05 38.02 -00 38 47.7 o 291
2016-04-30 06:23:18 C 12 05 37.74 -00 38 41.7 o 291
2016-04-30 06:45:49 C 12 05 37.43 -00 38 33.6 o 291
2017-07-26 06:42:14 C 17 05 06.56 -08 32 29.5 o 291
2017-07-26 06:59:11 C 17 05 04.64 -08 32 28.9 o 291
2023-04-16 03:32:43 C 08 45 20.682 +11 40 15.46 V G96
2023-04-16 03:40:47 C 08 45 23.551 +11 40 11.68 V G96
2023-04-16 03:48:54 C 08 45 26.410 +11 40 07.75 V G96