2015 HR9

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5249362147
Semi-major axis (a)2.0283668817 AU
Inclination (i)4.52996574°
Long. of Asc. Node (Ω)223.31601667° ± 5.00e+00
Arg. of Perihelion (ω)277.89018528° ± 6.00e+00
Mean Anomaly (M)261.42823371°
Mean Motion (n)0.3411805500°/day
Perihelion dist (q)0.96360370 AU
Aphelion dist (Q)3.09313030 AU
Orbital Period2.88881550 yr
Physical Parameters
H (abs. magnitude)25.60
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-04-18
RMS Residual0.089″
Uncertainty
Orbit TypeApollo
MOID0.064618 AU
Observations Used19
Oppositions1
Arc Total2015-2015
First Observation Used
Last Observation Used2015-04-22
Observations (19)
Date Type RA Dec Mag Band Observatory
2015-04-18 06:12:51 C 13 27 31.60 -17 07 42.6 L W84
2015-04-18 06:17:32 C 13 27 31.77 -17 07 36.8 L W84
2015-04-18 06:22:12 C 13 27 31.92 -17 07 30.8 L W84
2015-04-18 06:26:52 C 13 27 32.06 -17 07 24.9 L W84
2015-04-18 06:31:32 C 13 27 32.22 -17 07 19.0 L W84
2015-04-19 06:05:12 C 13 28 30.40 -16 38 38.1 L W84
2015-04-19 06:09:50 C 13 28 30.53 -16 38 32.5 L W84
2015-04-19 06:14:32 C 13 28 30.67 -16 38 26.8 L W84
2015-04-19 06:19:12 C 13 28 30.81 -16 38 21.1 L W84
2015-04-21 06:02:52 C 13 30 19.34 -15 44 42.9 L W84
2015-04-21 06:07:32 C 13 30 19.48 -15 44 38.1 L W84
2015-04-21 06:12:10 C 13 30 19.60 -15 44 32.8 L W84
2015-04-21 06:16:50 C 13 30 19.73 -15 44 27.9 L W84
2015-04-21 06:21:32 C 13 30 19.85 -15 44 22.8 L W84
2015-04-22 06:02:40 C 13 31 10.08 -15 19 50.6 L W84
2015-04-22 06:07:20 C 13 31 10.19 -15 19 45.9 L W84
2015-04-22 06:12:06 C 13 31 10.31 -15 19 41.1 L W84
2015-04-22 06:16:40 C 13 31 10.43 -15 19 36.3 L W84
2015-04-22 06:21:22 C 13 31 10.56 -15 19 31.5 L W84