2011 HP4

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.6125070000
Semi-major axis (a)2.1857226000 AU
Inclination (i)3.42065000°
Long. of Asc. Node (Ω)41.27996000°
Arg. of Perihelion (ω)234.27304000°
Mean Anomaly (M)173.62261000°
Mean Motion (n)0.3050082000°/day
Perihelion dist (q)0.84695220 AU
Aphelion dist (Q)3.52449300 AU
Orbital Period3.23141370 yr
Physical Parameters
H (abs. magnitude)27.60
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.380″
Uncertainty5
Orbit TypeApollo
MOID0.000341 AU
Observations Used16
Oppositions1
Arc Total
First Observation Used
Last Observation Used2011-04-28
Observations (16)
Date Type RA Dec Mag Band Observatory
2011-04-26 06:14:09 C 14 11 29.97 -03 24 26.2 r G96
2011-04-26 06:24:57 C 14 11 33.00 -03 24 40.6 r G96
2011-04-26 06:35:48 C 14 11 36.06 -03 24 56.3 r G96
2011-04-26 06:46:33 C 14 11 39.12 -03 25 10.7 r G96
2011-04-26 08:16:30 C 14 12 14.055 -03 26 38.94 t F51
2011-04-26 11:11:22 C 14 12 58.38 -03 31 22.6 r G96
2011-04-26 11:13:03 C 14 12 58.80 -03 31 24.5 r G96
2011-04-27 08:43:54 C 14 22 15.49 -04 09 45.8 r G96
2011-04-27 08:45:43 C 14 22 27.786 -04 09 05.57 t F51
2011-04-27 08:52:21 C 14 22 19.41 -04 10 03.8 r G96
2011-04-27 09:00:38 C 14 22 23.19 -04 10 21.3 r G96
2011-04-27 09:09:06 C 14 22 27.12 -04 10 39.6 r G96
2011-04-27 09:19:06 C 14 22 43.035 -04 10 18.19 t F51
2011-04-27 23:42:20 C 14 31 20.41 -04 48 04.4 u J95
2011-04-27 23:59:10 C 14 31 31.32 -04 48 53.3 u J95
2011-04-28 00:10:36 C 14 31 38.78 -04 49 26.4 u J95