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
2019-05-25 10:30:48 C 16 18 07.59 +03 23 45.5 – V T08
2019-05-25 10:46:42 C 16 18 19.00 +03 25 47.3 – V T08
2019-05-25 22:36:00 C 16 27 59.85 +04 58 17.5 – v I76
2019-05-25 22:39:11 C 16 28 02.38 +04 58 43.6 – v I76
2019-05-25 22:42:22 C 16 28 04.92 +04 59 10.0 – v I76
2019-05-25 22:47:38 C 16 28 09.11 +04 59 53.5 – v I76
2019-05-25 22:49:08 C 16 28 10.32 +05 00 05.6 – v I76
2019-05-25 22:50:38 C 16 28 11.51 +05 00 18.0 – v I76
2019-05-25 22:53:13 C 16 28 13.68 +05 00 39.7 – v I76
2019-05-25 22:54:44 C 16 28 14.79 +05 00 52.0 – v I76
2019-05-26 09:02:03 C 16 36 54.87 +06 26 41.8 – V G96
2019-05-26 09:03:32 C 16 37 07.095 +06 27 38.15 – U F52
2019-05-26 09:09:23 C 16 37 01.07 +06 27 45.1 – V G96
2019-05-26 09:16:43 C 16 37 07.28 +06 28 48.3 – V G96
2019-05-26 09:18:38 C 16 37 19.827 +06 29 49.68 – U F52
2019-05-26 09:24:02 C 16 37 13.50 +06 29 51.5 – V G96
2019-05-26 09:33:35 C 16 37 32.436 +06 32 00.04 – U F52
2019-05-28 23:00:31 C 17 44 33.96 +16 27 49.6 – V 089
2019-05-28 23:03:55 C 17 44 38.15 +16 28 24.6 – V 089
2019-05-28 23:07:17 C 17 44 42.28 +16 28 59.4 – V 089
2019-05-28 23:10:40 C 17 44 46.47 +16 29 34.6 – V 089
2019-05-28 23:14:03 C 17 44 50.60 +16 30 09.8 – V 089
2019-05-28 23:17:26 C 17 44 54.73 +16 30 43.8 – V 089
2019-05-28 23:20:49 C 17 44 58.91 +16 31 19.6 – V 089
2019-05-28 23:24:13 C 17 45 03.06 +16 31 54.2 – V 089
2019-05-29 15:15:02 C 18 06 16.13 +19 13 14.7 17.4 – C48
2019-05-29 15:16:18 C 18 06 17.84 +19 13 27.6 17.7 – C48
2019-05-29 15:17:59 C 18 06 20.11 +19 13 45.2 17.5 – C48
2019-05-29 15:19:28 C 18 06 22.07 +19 14 00.2 17.5 – C48
2019-05-29 15:20:07 C 18 06 22.91 +19 14 06.9 17.5 – C48
2019-05-29 15:21:48 C 18 06 25.16 +19 14 24.0 17.6 – C48
2019-05-29 15:23:04 C 18 06 26.87 +19 14 37.2 17.4 – C48
2019-05-29 15:24:45 C 18 06 29.13 +19 14 54.4 17.6 – C48
2019-05-29 15:26:26 C 18 06 31.39 +19 15 12.0 17.8 – C48
2019-05-29 15:28:20 C 18 06 33.93 +19 15 31.4 17.5 – C48
2019-05-29 15:30:14 C 18 06 36.50 +19 15 51.1 17.9 – C48
2019-05-29 21:38:45 C 18 15 09.16 +20 17 40.7 – V K19
2019-05-29 21:44:15 C 18 15 16.64 +20 18 36.4 – V K19
2019-05-29 21:49:44 C 18 15 24.19 +20 19 32.6 – V K19
2019-05-29 22:00:43 C 18 15 39.19 +20 21 23.7 – V K19
2019-05-30 01:27:38 C 18 20 18.70 +20 55 38.0 – V 204
2019-05-30 01:28:37 C 18 20 20.06 +20 55 47.7 – V 204
2019-05-30 01:29:22 C 18 20 21.05 +20 55 54.9 – V 204
2019-05-30 01:30:22 C 18 20 22.41 +20 56 04.8 – V 204
2019-05-30 01:31:07 C 18 20 23.42 +20 56 12.0 – V 204
2019-05-31 00:28:47 C 18 53 51.95 +24 27 25.0 – V Z80
2019-05-31 00:33:47 C 18 53 59.14 +24 28 07.8 – V Z80
2019-05-31 00:38:47 C 18 54 06.30 +24 28 51.4 – V Z80
2019-05-31 00:44:00 C 18 54 13.75 +24 29 37.0 – V Z80
2019-05-31 08:39:49 C 19 06 02.98 +25 36 31.3 – V 654
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)