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
2011-05-06 04:56:04 C 14 20 43.00 -17 20 34.7 o H26
2011-05-06 04:58:39 C 14 20 43.15 -17 20 33.3 o H26
2011-05-08 06:31:08 C 14 24 56.80 -16 42 10.4 r 703
2011-05-08 06:39:29 C 14 24 57.42 -16 42 02.4 r 703
2011-05-08 06:47:50 C 14 24 58.06 -16 41 56.4 r 703
2011-05-08 06:56:14 C 14 24 58.75 -16 41 49.3 r 703
2011-05-09 05:37:15 C 14 27 12.86 -16 21 48.9 o H21
2011-05-09 05:42:12 C 14 27 13.29 -16 21 44.2 o H21
2011-05-09 05:43:01 C 14 27 14.80 -16 21 38.2 17.9 c 704
2011-05-09 05:47:03 C 14 27 13.70 -16 21 39.6 o H21
2011-05-09 05:57:32 C 14 27 16.05 -16 21 25.1 18.1 c 704
2011-05-09 06:12:04 C 14 27 17.28 -16 21 12.3 17.9 c 704
2011-05-09 06:41:17 C 14 27 19.69 -16 20 44.4 18.2 c 704
2011-05-13 03:10:32 C 14 39 07.08 -14 34 43.0 o 807
2011-05-13 03:15:38 C 14 39 07.74 -14 34 36.3 o 807
2011-05-13 03:20:45 C 14 39 08.42 -14 34 29.4 o 807
2011-05-13 03:25:52 C 14 39 09.09 -14 34 22.5 o 807
2011-05-13 03:30:57 C 14 39 11.10 -14 35 56.4 o H26
2011-05-13 03:35:59 C 14 39 11.76 -14 35 49.9 o H26
2011-05-13 03:38:26 C 14 39 12.10 -14 35 46.8 o H26
2011-05-13 03:41:02 C 14 39 12.45 -14 35 43.4 o H26
2011-05-13 07:43:03 C 14 39 46.62 -14 29 58.6 u 448
2011-05-13 07:46:08 C 14 39 47.06 -14 29 53.9 u 448
2011-05-13 07:49:43 C 14 39 47.49 -14 29 49.2 u 448
2011-05-13 07:52:16 C 14 39 47.90 -14 29 45.5 u 448
2011-05-13 07:55:52 C 14 39 48.36 -14 29 40.5 u 448
2011-05-14 04:16:22 C 14 43 12.22 -13 58 21.1 o 807
2011-05-14 04:21:23 C 14 43 12.96 -13 58 13.5 o 807
2011-05-14 04:26:40 C 14 43 13.76 -13 58 05.2 o 807
2011-05-14 04:31:59 C 14 43 14.53 -13 57 57.1 o 807
2011-05-14 04:37:18 C 14 43 15.32 -13 57 48.9 o 807
2011-05-14 04:42:32 C 14 43 16.10 -13 57 40.7 o 807
2011-05-15 08:13:28 C 14 48 17.83 -13 12 21.4 o 807
2011-05-15 08:33:55 C 14 48 21.64 -13 11 44.0 o 807
2011-05-15 08:38:11 C 14 48 22.45 -13 11 35.9 o 807
2011-05-15 08:42:28 C 14 48 23.25 -13 11 27.8 o 807
2011-05-15 08:46:56 C 14 48 24.09 -13 11 19.9 o 807
2011-05-15 08:50:43 C 14 48 24.81 -13 11 12.9 o 807
2011-05-17 06:38:58 C 14 58 39.07 -11 43 15.8 o H21
2011-05-17 06:43:00 C 14 58 39.97 -11 43 06.9 o H21
2011-05-17 06:51:12 C 14 58 41.79 -11 42 48.2 o H21
2011-05-18 21:27:13 C 15 09 22.84 -10 08 16.1 u 560
2011-05-18 21:28:19 C 15 09 23.16 -10 08 13.0 u 560
2011-05-18 21:29:24 C 15 09 23.46 -10 08 10.1 u 560
2011-05-19 21:13:26 C 15 17 05.15 -08 58 59.9 c A24
2011-05-19 21:14:33 C 15 17 05.49 -08 58 56.5 c A24
2011-05-19 22:02:06 C 15 17 20.66 -08 56 28.7 c A24
2011-05-19 22:03:13 C 15 17 21.01 -08 56 24.8 c A24
2011-05-19 23:55:16 C 15 17 56.83 -08 50 32.8 v 204
2011-05-19 23:59:48 C 15 17 58.29 -08 50 18.4 v 204
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)