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
1997-11-06 07:54:59 05 01 37.32 +08 29 46.5 c 261
1997-11-06 09:09:59 05 01 32.33 +08 31 03.6 c 261
1997-11-30 12:28:36 C 04 16 48.29 +18 10 14.4 c 566
1997-11-30 12:42:52 C 04 16 47.14 +18 10 27.4 c 566
1997-11-30 12:57:29 C 04 16 45.94 +18 10 40.2 c 566
1997-12-04 05:36:37 C 04 10 10.30 +19 27 14.4 18.7 a 704
1997-12-04 06:04:26 C 04 10 08.12 +19 27 40.0 17.7 a 704
1997-12-04 06:28:20 C 04 10 06.26 +19 27 59.1 17.7 a 704
1997-12-04 06:52:09 C 04 10 04.40 +19 28 17.7 18.6 a 704
1997-12-04 07:23:32 C 04 10 02.12 +19 28 44.9 18.2 a 704
1997-12-05 03:47:19 C 04 08 36.84 +19 45 32.8 17.7 a 704
1997-12-05 04:18:40 C 04 08 34.54 +19 45 58.4 17.5 a 704
1997-12-05 04:42:46 C 04 08 32.79 +19 46 17.9 17.7 a 704
1997-12-05 05:06:41 C 04 08 30.96 +19 46 37.4 17.8 a 704
1997-12-05 05:37:51 C 04 08 28.64 +19 47 03.7 18.1 a 704
2001-03-28 11:16:55 C 15 44 33.45 -04 59 47.1 d 691
2001-03-28 11:46:55 C 15 44 33.32 -04 59 44.7 d 691
2001-03-28 12:17:09 C 15 44 33.20 -04 59 42.0 d 691
2001-04-25 07:24:14 C 15 25 11.57 -04 10 24.1 c 699
2001-04-25 07:54:40 C 15 25 09.85 -04 10 23.3 c 699
2001-04-25 08:25:05 C 15 25 08.03 -04 10 23.4 c 699
2001-04-25 08:55:32 C 15 25 06.27 -04 10 21.5 c 699
2001-04-26 10:36:39 C 15 23 39.77 -04 09 35.3 658
2001-04-26 10:42:59 C 15 23 39.43 -04 09 34.5 658
2001-04-26 10:45:59 C 15 23 39.23 -04 09 34.7 658
2001-04-26 22:04:49 C 15 23 00.70 -04 09 16.7 557
2001-04-26 23:03:21 C 15 22 57.23 -04 09 15.5 557
2001-04-26 23:33:48 C 15 22 55.34 -04 09 14.7 557
2001-04-27 00:09:51 C 15 22 53.18 -04 09 13.3 118
2001-04-27 00:35:30 C 15 22 51.77 -04 09 13.1 046
2001-04-27 00:37:29 C 15 22 51.61 -04 09 13.0 046
2001-04-27 00:41:19 C 15 22 51.31 -04 09 12.5 046
2001-04-27 00:43:05 C 15 22 51.23 -04 09 12.6 118
2001-04-27 00:43:50 C 15 22 51.17 -04 09 13.2 046
2001-04-27 00:53:53 C 15 22 50.54 -04 09 12.7 118
2001-04-27 07:29:48 C 15 22 27.71 -04 09 02.5 918
2001-04-27 07:37:48 C 15 22 27.30 -04 09 02.0 918
2001-04-27 07:44:59 C 15 22 26.76 -04 09 02.5 918
2001-04-28 01:05:27 C 15 21 25.34 -04 08 41.4 118
2001-04-28 01:19:50 C 15 21 24.43 -04 08 41.4 118
2001-04-28 07:15:48 C 15 21 03.64 -04 08 34.0 651
2001-04-28 07:22:43 C 15 21 03.20 -04 08 33.2 651
2001-04-28 07:29:25 C 15 21 02.88 -04 08 34.1 651
2001-04-28 08:37:19 C 15 20 58.46 -04 08 32.1 926
2001-04-28 08:44:33 C 15 20 58.04 -04 08 32.4 926
2001-04-28 08:49:05 C 15 20 57.76 -04 08 32.6 926
2001-04-29 08:09:03 C 15 19 33.07 -04 08 15.1 673
2001-04-29 08:18:56 C 15 19 32.33 -04 08 15.8 926
2001-04-29 08:27:25 C 15 19 31.98 -04 08 15.7 673
2001-04-29 08:27:54 C 15 19 31.73 -04 08 15.7 926