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
2019-04-29 23:23:41 C 14 07 22.34 -18 19 56.5 – V C95
2019-04-29 23:29:02 C 14 07 22.44 -18 19 53.6 – V C95
2019-04-29 23:34:17 C 14 07 22.59 -18 19 52.2 – V C95
2019-04-29 23:39:55 C 14 07 22.74 -18 19 49.6 – V C95
2019-04-29 23:45:14 C 14 07 22.93 -18 19 46.4 – V C95
2019-05-01 08:30:06 C 14 08 46.13 -18 04 47.4 – V 703
2019-05-01 08:37:52 C 14 08 46.38 -18 04 43.2 – V 703
2019-05-01 08:45:40 C 14 08 46.68 -18 04 39.1 – V 703
2019-05-01 08:53:26 C 14 08 46.93 -18 04 35.4 – V 703
2019-05-01 10:06:42 C 14 08 51.722 -18 03 53.64 – U F51
2019-05-01 10:24:24 C 14 08 52.246 -18 03 44.93 – U F51
2019-05-01 10:42:05 C 14 08 52.770 -18 03 36.15 – U F51
2019-05-01 10:59:46 C 14 08 53.301 -18 03 27.23 – U F51
2019-05-04 08:06:58 C 14 12 28.98 -17 25 20.4 – V G96
2019-05-04 08:14:26 C 14 12 29.31 -17 25 15.7 – V G96
2019-05-04 08:29:17 C 14 12 29.98 -17 25 06.0 – V G96
2019-05-05 08:35:45 C 14 13 59.57 -17 09 17.9 – V 703
2019-05-05 08:43:35 C 14 13 59.95 -17 09 12.6 – V 703
2019-05-05 08:51:24 C 14 14 00.38 -17 09 07.5 – V 703
2019-05-05 08:59:13 C 14 14 00.75 -17 09 00.8 – V 703
2019-05-06 09:41:45 C 14 15 44.43 -16 51 11.1 – V T05
2019-05-06 09:53:09 C 14 15 45.06 -16 51 02.7 – V T05
2019-05-06 10:04:24 C 14 15 45.64 -16 50 54.0 – V T05
2019-05-06 10:15:40 C 14 15 46.22 -16 50 45.9 – V T05
2019-05-07 07:11:11 C 14 17 24.15 -16 34 19.9 – V T05
2019-05-07 07:11:50 C 14 17 24.16 -16 34 19.2 – V T05
2019-05-07 07:12:30 C 14 17 24.21 -16 34 19.0 – V T05
2019-05-07 07:13:09 C 14 17 24.28 -16 34 18.2 – V T05
2019-05-07 07:13:49 C 14 17 24.30 -16 34 18.0 – V T05
2019-05-07 07:14:28 C 14 17 24.38 -16 34 17.6 – V T05
2019-05-07 07:15:08 C 14 17 24.36 -16 34 16.7 – V T05
2019-05-07 07:15:47 C 14 17 24.46 -16 34 16.5 – V T05
2019-05-07 07:54:56 C 14 17 26.81 -16 33 45.4 – V T08
2019-05-07 07:55:36 C 14 17 26.82 -16 33 44.8 – V T08
2019-05-07 07:56:16 C 14 17 26.90 -16 33 43.9 – V T08
2019-05-07 07:56:56 C 14 17 26.94 -16 33 43.7 – V T08
2019-05-07 07:57:35 C 14 17 26.95 -16 33 43.3 – V T08
2019-05-07 07:58:15 C 14 17 27.01 -16 33 42.6 – V T08
2019-05-07 07:58:55 C 14 17 27.08 -16 33 42.1 – V T08
2019-05-09 07:55:49 C 14 21 34.36 -15 51 03.0 – V 703
2019-05-09 08:04:01 C 14 21 35.04 -15 50 55.1 – V 703
2019-05-09 08:12:14 C 14 21 35.67 -15 50 46.2 – V 703
2019-05-09 08:15:58 C 14 21 39.673 -15 50 31.30 – U F51
2019-05-09 08:20:25 C 14 21 36.30 -15 50 38.2 – V 703
2019-05-09 08:51:50 C 14 21 42.379 -15 49 56.99 – U F51
2019-05-09 09:38:33 C 14 21 45.84 -15 49 10.1 – V T08
2019-05-09 09:41:40 C 14 21 46.07 -15 49 07.3 – V T08
2019-05-09 09:49:01 C 14 21 46.61 -15 48 59.6 – V T08
2019-05-09 10:14:32 C 14 21 48.53 -15 48 34.3 – V T08
2019-05-10 23:12:16 C 14 25 42.59 -15 09 38.1 – V 595
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)