IAA RAS IAA Minor Planet Database

2011 HP

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Radar
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4802864981 ± 7.29e-09
Semi-major axis (a)1.9206195258 AU ± 8.20e-10
Inclination (i)3.72371494° ± 1.51e-06
Long. of Asc. Node (Ω)229.48069778° ± 6.91e-06
Arg. of Perihelion (ω)46.34569337° ± 8.60e-06
Mean Anomaly (M)148.38685476° ± 1.59e-06
Mean Motion (n)0.3702970622°/day ± 2.37e-10
Perihelion dist (q)0.99817190 AU ± 1.40e-08
Aphelion dist (Q)2.84306715 AU ± 1.40e-08
Orbital Period2.66171780 yr ± 1.71e-09
Physical Parameters
H (abs. magnitude)22.20
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.275″
Uncertainty0
Orbit TypeApollo
MOID0.027782 AU
Observations Used414
Radar Obs Used1
Oppositions5
Arc Total2011-2019
First Observation Used2011-04-13
Last Observation Used2019-09-30
Observations (424)
Date Type RA Dec Mag Band Observatory
2019-05-10 23:17:43 C 14 25 43.13 -15 09 32.0 – V 595
2019-05-10 23:23:10 C 14 25 43.66 -15 09 25.6 – V 595
2019-05-11 09:19:27 C 14 26 55.07 -14 57 23.8 – V T05
2019-05-11 09:28:05 C 14 26 55.91 -14 57 13.4 – V T05
2019-05-11 09:42:20 C 14 26 57.27 -14 56 56.5 – V T05
2019-05-14 04:43:20 C 14 36 25.54 -13 24 06.9 – U I41
2019-05-14 04:43:59 C 14 36 25.63 -13 24 05.9 – U I41
2019-05-14 06:21:28 C 14 36 39.41 -13 21 31.7 – U I41
2019-05-14 06:31:22 C 14 36 40.79 -13 21 15.7 – U I41
2019-05-15 08:32:10 C 14 41 16.93 -12 36 07.0 – V T05
2019-05-15 08:36:09 C 14 41 17.55 -12 35 59.9 – V T05
2019-05-15 08:46:48 C 14 41 19.25 -12 35 40.5 – V T05
2019-05-15 09:00:57 C 14 41 21.49 -12 35 14.8 – V T05
2019-05-21 11:04:49 C 15 22 53.58 -05 46 07.9 – V T08
2019-05-21 11:08:50 C 15 22 55.10 -05 45 51.1 – V T08
2019-05-21 11:16:50 C 15 22 58.14 -05 45 17.4 – V T08
2019-05-21 11:30:17 C 15 23 03.24 -05 44 20.8 – V T08
2019-05-22 01:55:56 C 15 29 25.65 -04 41 26.0 – V G40
2019-05-22 02:15:45 C 15 29 34.03 -04 39 54.1 – V G40
2019-05-22 02:35:30 C 15 29 42.41 -04 38 22.8 – V G40
2019-05-22 22:15:24 C 15 39 31.14 -03 02 35.2 – V J69
2019-05-22 22:22:44 C 15 39 34.75 -03 01 56.7 – V J69
2019-05-22 22:30:04 C 15 39 38.35 -03 01 18.7 – V J69
2019-05-22 22:44:32 C 15 39 44.08 -02 59 48.9 – V K63
2019-05-22 22:49:14 C 15 39 46.35 -02 59 24.3 – V K63
2019-05-22 22:52:58 C 15 39 48.19 -02 59 04.7 – V K63
2019-05-23 12:46:16 C 15 47 18.96 -01 41 38.8 – V T05
2019-05-23 13:04:48 C 15 47 28.91 -01 39 51.7 – V T05
2019-05-23 13:26:24 C 15 47 40.60 -01 37 46.6 – V T05
2019-05-23 19:55:25 C 15 51 45.95 -01 00 37.5 – V 104
2019-05-23 19:59:43 C 15 51 48.41 -01 00 11.6 – V 104
2019-05-23 20:03:59 C 15 51 50.88 -00 59 46.0 – V 104
2019-05-23 20:08:15 C 15 51 53.34 -00 59 20.3 – V 104
2019-05-23 20:12:32 C 15 51 55.80 -00 58 54.5 – V 104
2019-05-23 20:34:10 C 15 52 07.70 -00 56 48.5 – V 595
2019-05-23 20:44:26 C 15 52 13.58 -00 55 46.4 – V 595
2019-05-23 20:45:38 C 15 52 14.27 -00 55 39.2 – V 595
2019-05-23 20:46:14 C 15 52 14.59 -00 55 35.5 – V 595
2019-05-23 22:39:44 C 15 53 21.64 -00 44 16.9 – V J95
2019-05-23 22:41:31 C 15 53 22.68 -00 44 06.0 – V J95
2019-05-23 22:44:33 C 15 53 24.43 -00 43 47.4 – V J95
2019-05-23 22:46:22 C 15 53 25.49 -00 43 36.2 – V J95
2019-05-23 22:47:28 C 15 53 25.97 -00 43 29.9 – V Z80
2019-05-23 22:50:48 C 15 53 27.93 -00 43 09.2 – V Z80
2019-05-23 22:54:09 C 15 53 29.84 -00 42 48.7 – V Z80
2019-05-23 22:57:29 C 15 53 31.78 -00 42 28.2 – V Z80
2019-05-23 23:00:48 C 15 53 33.72 -00 42 08.0 – V Z80
2019-05-23 23:04:08 C 15 53 35.65 -00 41 47.4 – V Z80
2019-05-25 10:12:57 C 16 17 54.80 +03 21 28.9 – V T08
2019-05-25 10:16:56 C 16 17 57.65 +03 21 59.3 – V T08
Radar Observations (1)
Epoch (UTC)ValueSigmaUnitsFreq (MHz)ReceiverTransmitter
2019-05-29 05:03:00 31961256.79 4 us 2380 -1 -1
Station codes
-1 Arecibo (305-m, 1963–2020)