2015 HF9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5403318182 ± 8.20e-08
Semi-major axis (a)1.3470215862 AU ± 1.24e-08
Inclination (i)16.40458110° ± 8.38e-06
Long. of Asc. Node (Ω)211.66469609° ± 1.38e-05
Arg. of Perihelion (ω)204.40530873° ± 1.82e-05
Mean Anomaly (M)30.96394352° ± 8.80e-06
Mean Motion (n)0.6304497010°/day ± 8.69e-09
Perihelion dist (q)0.61918296 AU ± 1.11e-07
Aphelion dist (Q)2.07486021 AU ± 1.12e-07
Orbital Period1.56337021 yr ± 2.15e-08
Physical Parameters
H (abs. magnitude)20.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.205″
Uncertainty0
Orbit TypeApollo
MOID0.246078 AU
Observations Used68
Oppositions4
Arc Total2015-2025
First Observation Used2015-04-18
Last Observation Used2025-08-16
Observations (70)
Date Type RA Dec Mag Band Observatory
2018-04-16 06:22:02 C 11 31 23.87 -09 58 51.5 U G96
2020-05-21 10:41:38 C 16 30 50.551 -04 23 40.85 U F51
2020-05-21 11:18:22 C 16 30 47.703 -04 23 20.92 U F51
2020-05-21 11:36:44 C 16 30 46.292 -04 23 11.02 U F51
2023-04-25 07:31:15 C 15 56 52.85 -11 38 55.5 u 807
2023-04-25 07:55:29 C 15 56 51.24 -11 38 42.0 u 807
2023-04-25 08:07:28 C 15 56 50.49 -11 38 34.6 u 807
2023-05-13 11:21:19 C 15 25 42.229 -07 15 57.25 X F51
2023-05-13 11:22:14 C 15 25 42.148 -07 15 56.84 X F51
2023-05-13 11:39:41 C 15 25 40.788 -07 15 46.44 X F51
2023-05-13 11:40:36 C 15 25 40.729 -07 15 45.98 X F51
2023-05-13 11:57:56 C 15 25 39.379 -07 15 36.08 X F51
2023-05-13 11:58:52 C 15 25 39.318 -07 15 35.26 X F51
2025-06-22 08:55:40 C 21 01 36.613 +23 06 28.55 V I52
2025-06-22 09:02:52 C 21 01 36.710 +23 06 41.30 V I52
2025-06-29 09:13:11 C 21 05 52.370 +28 28 08.10 V G96
2025-06-29 09:22:53 C 21 05 52.550 +28 28 27.50 V G96
2025-06-29 09:32:36 C 21 05 52.740 +28 28 47.50 V G96
2025-08-16 02:15:08 C 08 59 55.130 +80 04 08.29 X M57
2025-08-16 02:39:11 C 08 59 58.925 +80 01 51.24 X M57