159533 (2001 HH31)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS ⇩ Gaia
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2888585292 ± 2.93e-09
Semi-major axis (a)1.6546236597 AU ± 2.13e-09
Inclination (i)12.85133130° ± 3.90e-07
Long. of Asc. Node (Ω)71.60731232° ± 3.59e-07
Arg. of Perihelion (ω)275.98680386° ± 1.04e-06
Mean Anomaly (M)100.70770514° ± 3.68e-06
Mean Motion (n)0.4630878974°/day ± 8.93e-10
Perihelion dist (q)1.17667150 AU ± 5.08e-09
Aphelion dist (Q)2.13257582 AU ± 5.57e-09
Orbital Period2.12837841 yr ± 4.11e-09
Physical Parameters
H (abs. magnitude)17.66
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.008″
Uncertainty0
Orbit TypeAmor
MOID0.290382 AU
Observations Used706
Gaia Obs Used90
Oppositions10
Arc Total1997-2016
First Observation Used1997-11-06
Last Observation Used2026-01-08
Observations (748)
Date Type RA Dec Mag Band Observatory
2007-04-10 04:24:21 C 10 58 13.74 +28 41 01.1 20.9 o H55
2009-02-22 05:23:15 C 10 22 28.48 +35 09 46.4 r 703
2009-02-22 05:30:59 C 10 22 27.80 +35 09 50.0 r 703
2009-02-22 05:38:47 C 10 22 27.26 +35 09 49.8 r 703
2009-02-22 05:46:38 C 10 22 26.83 +35 09 53.2 r 703
2010-09-09 10:56:35 C 07 08 01.81 +21 51 07.0 o 691
2010-09-09 11:14:51 C 07 08 03.69 +21 51 09.3 o 691
2010-11-06 10:19:14 C 09 10 20.08 +23 29 48.8 o 691
2010-11-06 10:51:06 C 09 10 22.04 +23 29 53.8 o 691
2010-11-06 11:23:00 C 09 10 24.00 +23 29 58.4 o 691
2010-11-11 10:30:15 C 09 17 35.34 +23 49 45.7 u 448
2010-11-11 11:22:03 C 09 17 38.17 +23 49 54.9 u 448
2010-11-11 12:15:46 C 09 17 41.28 +23 50 04.7 u 448
2011-01-28 05:52:16 C 09 00 03.02 +39 04 17.9 r 703
2011-01-28 06:00:35 C 09 00 02.19 +39 04 22.8 r 703
2011-01-28 06:08:53 C 09 00 01.80 +39 04 27.6 r 703
2011-01-28 06:17:13 C 09 00 00.97 +39 04 31.0 r 703
2011-02-06 05:11:49 C 08 44 05.35 +40 09 39.8 r 703
2011-02-06 05:12:47 C 08 44 05.42 +40 09 39.4 r 703
2011-02-06 05:22:37 C 08 44 04.77 +40 09 42.7 r 703
2011-02-06 05:23:36 C 08 44 04.70 +40 09 41.9 r 703
2011-02-06 05:33:32 C 08 44 03.94 +40 09 45.8 r 703
2011-02-06 05:34:32 C 08 44 03.87 +40 09 44.3 r 703
2011-02-06 05:44:29 C 08 44 03.15 +40 09 47.5 r 703
2011-02-06 05:45:29 C 08 44 03.12 +40 09 46.3 r 703
2012-09-29 09:15:52 C 06 42 58.99 +17 01 57.1 u 807
2012-09-29 09:22:01 C 06 42 59.52 +17 01 58.8 u 807
2012-10-23 11:39:46 C 07 24 47.13 +20 14 38.5 u 448
2012-10-23 11:59:08 C 07 24 48.16 +20 14 46.5 u 448
2012-10-23 12:18:46 C 07 24 49.15 +20 14 53.9 u 448
2012-10-31 08:42:21 C 07 34 01.64 +21 34 32.4 u 448
2012-10-31 09:02:49 C 07 34 02.46 +21 34 42.6 u 448
2012-10-31 09:31:52 C 07 34 03.40 +21 34 55.7 u 448
2012-11-13 09:26:06 C 07 43 01.29 +24 17 55.9 19.6 c 704
2012-11-13 10:08:21 C 07 43 01.90 +24 18 22.0 19.3 c 704
2012-11-13 10:29:35 C 07 43 02.17 +24 18 34.5 19.4 c 704
2012-11-13 10:50:43 C 07 43 02.37 +24 18 47.3 19.2 c 704
2012-11-15 09:19:56 C 07 43 35.94 +24 46 52.2 r 703
2012-11-15 09:32:05 C 07 43 36.04 +24 47 00.5 r 703
2012-11-15 09:44:16 C 07 43 36.22 +24 47 08.4 r 703
2012-11-15 09:56:32 C 07 43 36.26 +24 47 16.2 r 703
2012-11-24 10:03:33 C 07 43 11.27 +27 10 47.3 u H21
2012-11-24 10:07:36 C 07 43 11.20 +27 10 50.4 u H21
2012-11-24 10:15:41 C 07 43 11.06 +27 10 56.3 u H21
2012-11-24 10:19:30 C 07 43 11.00 +27 10 58.9 u H21
2012-11-26 09:43:28 C 07 42 24.38 +27 45 01.3 v H21
2012-11-26 09:46:47 C 07 42 24.52 +27 45 04.9 q 448
2012-11-26 09:51:41 C 07 42 24.18 +27 45 07.2 v H21
2012-11-26 09:59:54 C 07 42 24.00 +27 45 13.0 v H21
2012-11-26 10:00:21 C 07 42 24.25 +27 45 14.9 q 448