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
2009-04-20 05:59:15 C 13 44 44.66 -09 43 12.4 r G96
2009-04-20 06:09:06 C 13 44 43.58 -09 43 04.1 r G96
2009-04-20 06:18:58 C 13 44 42.50 -09 42 55.9 r G96
2009-04-20 06:28:53 C 13 44 41.35 -09 42 47.5 r G96
2009-04-20 06:41:07 C 13 44 39.94 -09 42 37.5 r G96
2009-04-20 06:42:22 C 13 44 39.80 -09 42 36.6 r G96
2009-04-20 06:43:36 C 13 44 39.66 -09 42 35.9 r G96
2009-04-20 06:44:39 C 13 44 39.55 -09 42 34.8 r G96
2009-04-20 07:54:13 C 13 44 31.60 -09 41 38.2 v H01
2009-04-20 08:02:12 C 13 44 30.69 -09 41 31.7 v H01
2009-04-20 08:09:48 C 13 44 29.83 -09 41 25.4 v H01
2009-04-20 08:18:48 C 13 44 28.81 -09 41 18.0 v H01
2009-04-21 04:43:13 C 13 42 16.48 -09 24 46.0 r G96
2009-04-21 04:47:15 C 13 42 15.98 -09 24 43.4 r G96
2009-04-21 04:51:15 C 13 42 15.58 -09 24 40.0 r G96
2009-04-21 04:55:12 C 13 42 15.12 -09 24 37.4 r G96
2009-04-23 05:42:23 C 13 37 10.87 -08 46 40.8 o H55
2009-04-23 05:55:57 C 13 37 09.47 -08 46 29.9 o H55
2009-04-23 06:10:11 C 13 37 07.91 -08 46 18.8 o H55
2009-04-23 10:19:44 C 13 36 43.49 -08 42 54.3 o 474
2009-04-23 10:33:47 C 13 36 42.09 -08 42 43.5 o 474
2009-04-23 10:41:09 C 13 36 41.27 -08 42 38.2 o 474
2009-04-24 05:11:45 C 13 34 52.28 -08 29 09.0 o 291
2009-04-24 05:17:25 C 13 34 51.67 -08 29 04.2 o 291
2009-04-24 05:22:45 C 13 34 51.12 -08 29 01.1 o 291
2009-04-29 05:33:25 C 13 24 13.71 -07 07 58.3 o 291
2009-04-29 05:38:48 C 13 24 13.15 -07 07 55.0 o 291
2009-04-29 05:44:13 C 13 24 12.78 -07 07 51.6 o 291
2016-03-31 09:39:17 C 13 06 54.97 -15 07 02.5 R G45
2016-03-31 09:47:13 C 13 06 52.96 -15 06 38.7 R G45
2016-03-31 09:54:50 C 13 06 51.03 -15 06 15.6 R G45
2016-03-31 10:02:27 C 13 06 49.09 -15 05 53.5 R G45
2016-04-01 00:17:30 C 13 03 26.37 -14 23 52.7 q K92
2016-04-01 00:21:13 C 13 03 25.49 -14 23 42.1 q K92
2016-04-01 00:24:56 C 13 03 24.59 -14 23 31.5 q K92
2016-04-01 00:29:55 C 13 03 23.40 -14 23 17.3 q K92
2016-04-01 00:42:46 C 13 03 21.14 -14 23 25.8 q J95
2016-04-01 00:49:33 C 13 03 19.53 -14 23 06.1 q J95
2016-04-01 00:57:41 C 13 03 17.59 -14 22 43.4 q J95
2016-04-02 06:04:09 C 12 56 57.05 -13 03 34.2 R G45
2016-04-02 06:10:30 C 12 56 55.67 -13 03 17.7 R G45
2016-04-02 07:58:21 C 12 56 32.73 -12 58 38.4 q G96
2016-04-02 08:08:03 C 12 56 30.65 -12 58 13.5 q G96
2016-04-02 08:17:46 C 12 56 28.58 -12 57 48.4 q G96
2016-04-02 08:27:30 C 12 56 26.50 -12 57 23.1 q G96
2016-04-02 09:33:21 C 12 56 12.41 -12 54 33.3 R G45
2016-04-02 09:48:35 C 12 56 09.20 -12 53 53.6 R G45
2016-04-02 09:51:46 C 12 56 08.63 -12 53 45.3 q G96
2016-04-02 09:55:54 C 12 56 07.75 -12 53 34.5 q G96
2016-04-02 09:56:10 C 12 56 07.60 -12 53 34.0 R G45