2015 HQ9

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4345372296 ± 5.88e-06
Semi-major axis (a)1.5940451699 AU ± 7.87e-08
Inclination (i)3.94979343° ± 9.65e-05
Long. of Asc. Node (Ω)211.10055150° ± 4.64e-05
Arg. of Perihelion (ω)287.79208516° ± 1.10e-03
Mean Anomaly (M)126.18410399° ± 1.83e-04
Mean Motion (n)0.4897352229°/day ± 3.63e-08
Perihelion dist (q)0.90137320 AU ± 9.37e-06
Aphelion dist (Q)2.28671714 AU ± 9.37e-06
Orbital Period2.01256973 yr ± 1.49e-07
Physical Parameters
H (abs. magnitude)27.18
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.102″
Uncertainty0
Orbit TypeApollo
MOID0.028284 AU
Observations Used24
Oppositions1
Arc Total2013-2015
First Observation Used2013-04-16
Last Observation Used2015-04-21
Observations (25)
Date Type RA Dec Mag Band Observatory
2013-04-16 04:37:10 C 13 23 46.60 -13 09 36.7 L W84
2013-04-16 04:43:02 C 13 23 47.13 -13 09 26.7 L W84
2013-04-16 04:48:58 C 13 23 47.69 -13 09 16.7 L W84
2013-04-16 04:55:06 C 13 23 48.27 -13 09 06.2 L W84
2013-04-17 02:22:03 C 13 26 12.27 -12 34 26.2 L W84
2013-04-17 02:33:59 C 13 26 13.32 -12 34 07.9 L W84
2013-04-17 02:39:59 C 13 26 13.81 -12 33 59.2 L W84
2013-04-19 05:55:50 C 13 30 57.34 -11 23 05.1 L W84
2013-04-19 06:03:06 C 13 30 57.82 -11 22 55.9 L W84
2013-04-19 06:10:28 C 13 30 58.33 -11 22 46.4 L W84
2013-04-19 06:17:49 C 13 30 58.81 -11 22 37.2 L W84
2015-04-18 04:59:54 C 13 10 56.33 -10 50 40.0 L W84
2015-04-18 05:04:31 C 13 10 56.88 -10 50 34.0 L W84
2015-04-18 05:09:12 C 13 10 57.45 -10 50 27.9 L W84
2015-04-18 05:13:50 C 13 10 58.01 -10 50 21.8 L W84
2015-04-18 05:18:33 C 13 10 58.56 -10 50 15.7 L W84
2015-04-19 04:47:42 C 13 14 06.02 -10 21 42.8 L W84
2015-04-19 04:52:21 C 13 14 06.51 -10 21 37.3 L W84
2015-04-19 04:57:02 C 13 14 07.03 -10 21 31.8 L W84
2015-04-19 05:01:42 C 13 14 07.52 -10 21 26.5 L W84
2015-04-19 05:06:20 C 13 14 08.01 -10 21 21.1 L W84
2015-04-21 05:19:09 C 13 19 39.30 -09 30 55.5 L W84
2015-04-21 05:23:51 C 13 19 39.72 -09 30 51.1 L W84
2015-04-21 05:28:30 C 13 19 40.13 -09 30 46.8 L W84
2015-04-21 05:33:12 C 13 19 40.53 -09 30 42.2 L W84