2009 HD

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5637654423 ± 2.26e-08
Semi-major axis (a)2.4025308476 AU ± 8.38e-09
Inclination (i)12.51623824° ± 1.08e-05
Long. of Asc. Node (Ω)34.64421425° ± 5.46e-06
Arg. of Perihelion (ω)173.13788766° ± 2.81e-05
Mean Anomaly (M)154.99245026° ± 7.21e-06
Mean Motion (n)0.2646724986°/day ± 1.38e-09
Perihelion dist (q)1.04806698 AU ± 5.43e-08
Aphelion dist (Q)3.75699471 AU ± 5.58e-08
Orbital Period3.72394672 yr ± 1.95e-08
Physical Parameters
H (abs. magnitude)22.92
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.422″
Uncertainty0
Orbit TypeAmor
MOID0.044153 AU
Observations Used114
Oppositions11
Arc Total2009-2024
First Observation Used2009-04-17
Last Observation Used2024-04-14
Observations (123)
Date Type RA Dec Mag Band Observatory
2024-03-07 12:05:04 C 13 24 13.619 +49 29 44.88 V G96
2024-03-07 12:31:24 C 13 24 17.442 +49 29 43.98 V V06
2024-03-07 12:32:38 C 13 24 17.626 +49 29 43.91 V V06
2024-03-07 12:33:52 C 13 24 17.784 +49 29 43.84 V V06
2024-03-07 12:35:06 C 13 24 17.968 +49 29 43.69 V V06
2024-03-07 21:54:06 C 13 25 51.03 +49 29 40.0 X 033
2024-03-07 21:59:11 C 13 25 51.81 +49 29 40.6 X 033
2024-03-07 22:04:16 C 13 25 52.61 +49 29 41.3 X 033
2024-03-07 22:09:21 C 13 25 53.35 +49 29 41.1 X 033
2024-04-04 11:48:44 C 16 03 22.799 +28 11 43.12 V 703
2024-04-04 11:52:05 C 16 03 23.872 +28 11 22.60 V 703
2024-04-04 11:55:25 C 16 03 24.959 +28 11 02.44 V 703
2024-04-04 11:58:44 C 16 03 25.920 +28 10 43.43 V 703
2024-04-09 12:03:15 C 16 42 28.792 +13 56 28.95 X F51
2024-04-09 12:20:05 C 16 42 33.863 +13 54 10.59 X F51
2024-04-09 12:53:58 C 16 42 44.020 +13 49 31.99 X F51
2024-04-11 11:25:30 C 16 57 54.036 +07 09 12.24 V G96
2024-04-11 11:33:03 C 16 57 56.290 +07 08 05.10 V G96
2024-04-11 11:40:35 C 16 57 58.554 +07 06 58.10 V G96
2024-04-11 11:48:08 C 16 58 00.800 +07 05 51.25 V G96
2024-04-14 02:23:55 B 17 18 16.663 -02 22 15.10 X C95
2024-04-14 02:28:53 B 17 18 18.096 -02 23 00.67 X C95
2024-04-14 02:33:55 B 17 18 19.630 -02 23 46.86 X C95