2015 HH9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5448119027 ± 7.31e-03
Semi-major axis (a)2.3763955181 AU ± 3.45e-02
Inclination (i)1.73899122° ± 1.23e-02
Long. of Asc. Node (Ω)238.07095424° ± 1.12e-01
Arg. of Perihelion (ω)330.22980184° ± 1.73e-01
Mean Anomaly (M)324.02068567° ± 2.27e+01
Mean Motion (n)0.2690949000°/day ± 5.86e-03
Perihelion dist (q)1.08161250 AU ± 2.34e-02
Aphelion dist (Q)3.67059870 AU ± 5.61e-02
Orbital Period3.66267690 yr ± 7.98e-02
Physical Parameters
H (abs. magnitude)25.90
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.969″
Uncertainty3
Orbit TypeAmor
MOID0.078155 AU
Observations Used18
Oppositions1
Arc Total2015-2015
First Observation Used
Last Observation Used2015-04-30
Observations (18)
Date Type RA Dec Mag Band Observatory
2015-04-17 23:23:18 C 12 36 28.83 -19 14 17.5 L W84
2015-04-17 23:27:51 C 12 36 30.93 -19 14 28.7 L W84
2015-04-17 23:32:28 C 12 36 33.05 -19 14 40.1 L W84
2015-04-17 23:37:07 C 12 36 35.18 -19 14 51.5 L W84
2015-04-17 23:41:42 C 12 36 37.25 -19 15 02.4 L W84
2015-04-19 00:53:19 C 12 48 44.32 -20 11 51.3 L W84
2015-04-19 00:58:01 C 12 48 46.51 -20 12 02.2 L W84
2015-04-19 01:02:33 C 12 48 48.60 -20 12 12.5 L W84
2015-04-19 01:07:07 C 12 48 50.79 -20 12 23.4 L W84
2015-04-19 01:11:52 C 12 48 52.96 -20 12 34.2 L W84
2015-04-20 08:12:58 C 13 04 22.36 -21 21 06.7 o 926
2015-04-20 08:18:37 C 13 04 25.10 -21 21 18.0 o 926
2015-04-20 08:24:19 C 13 04 27.85 -21 21 29.8 o 926
2015-04-21 05:30:35 C 13 15 33.27 -22 03 52.1 o 926
2015-04-21 05:37:38 C 13 15 36.74 -22 04 06.3 o 926
2015-04-21 05:44:38 C 13 15 40.30 -22 04 21.2 o 926
2015-04-30 07:11:32 C 15 09 43.67 -25 54 25.0 o 926
2015-04-30 07:19:22 C 15 09 47.12 -25 54 27.3 o 926