2001 HL31

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.7867437000
Semi-major axis (a)2.4696773000 AU
Inclination (i)13.52569000° ± 4.00e+00
Long. of Asc. Node (Ω)31.15899000° ± 5.00e+00
Arg. of Perihelion (ω)294.09106000°
Mean Anomaly (M)96.15723000°
Mean Motion (n)0.2539473900°/day
Perihelion dist (q)0.52667420 AU
Aphelion dist (Q)4.41268040 AU
Orbital Period3.88114900 yr
Physical Parameters
H (abs. magnitude)20.27
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.670″
Uncertainty0
Orbit TypeApollo
MOID0.075505 AU
Observations Used105
Oppositions2
Arc Total2001-2025
First Observation Used
Last Observation Used2025-01-05
Observations (72)
Date Type RA Dec Mag Band Observatory
2001-04-29 07:38:38 C 15 33 06.49 -24 22 15.7 17.4 c 704
2001-04-29 07:57:44 C 15 33 06.00 -24 23 25.6 17.8 c 704
2001-04-29 08:17:50 C 15 33 05.44 -24 24 38.3 17.3 c 704
2001-04-29 08:37:26 C 15 33 04.88 -24 25 49.8 17.9 c 704
2001-04-29 08:56:32 C 15 33 04.40 -24 27 00.6 17.9 c 704
2001-04-29 22:41:44 C 15 32 54.84 -25 19 51.1 620
2001-04-29 22:45:46 C 15 32 54.71 -25 20 06.8 620
2001-04-29 22:51:23 C 15 32 54.57 -25 20 29.8 620
2001-04-29 22:54:12 C 15 32 54.44 -25 20 41.8 620
2001-04-29 23:00:34 C 15 32 53.42 -25 21 11.6 118
2001-04-29 23:02:04 C 15 32 53.47 -25 21 17.5 118
2001-04-29 23:04:46 C 15 32 53.42 -25 21 28.7 118
2001-04-29 23:07:16 C 15 32 53.27 -25 21 38.1 118
2001-04-29 23:15:12 C 15 32 53.85 -25 22 05.3 620
2001-04-29 23:18:29 C 15 32 53.19 -25 22 24.5 046
2001-04-29 23:19:31 C 15 32 53.13 -25 22 28.4 046
2001-04-29 23:20:30 C 15 32 53.10 -25 22 32.4 046
2001-04-29 23:21:47 C 15 32 53.10 -25 22 37.9 046
2001-04-29 23:23:09 C 15 32 53.12 -25 22 44.0 046
2001-04-29 23:24:13 C 15 32 53.05 -25 22 47.8 046
2001-04-29 23:25:28 C 15 32 53.00 -25 22 52.9 046
2001-04-29 23:28:20 C 15 32 52.88 -25 23 04.0 046
2001-04-29 23:53:14 C 15 32 52.17 -25 24 46.1 557
2001-04-29 23:55:01 C 15 32 52.21 -25 24 53.8 557
2001-04-30 06:37:53 C 15 32 46.69 -25 52 43.5 17.1 c 704
2001-04-30 06:38:27 C 15 32 46.71 -25 52 45.4 17.3 c 704
2001-04-30 06:57:14 C 15 32 46.19 -25 54 05.9 16.8 c 704
2001-04-30 06:57:16 C 15 32 46.06 -25 54 07.1 17.4 c 704
2001-04-30 07:16:23 C 15 32 45.44 -25 55 30.2 17.1 c 704
2001-04-30 07:16:42 C 15 32 45.38 -25 55 31.0 17.0 c 704
2001-04-30 07:35:16 C 15 32 44.79 -25 56 51.4 16.9 c 704
2001-04-30 07:36:02 C 15 32 44.83 -25 56 54.1 17.7 c 704
2001-04-30 07:54:29 C 15 32 44.27 -25 58 13.6 16.1 c 704
2001-04-30 07:55:16 C 15 32 44.23 -25 58 16.9 16.5 c 704
2001-04-30 08:19:09 C 15 32 43.40 -25 59 59.7 17.1 c 704
2001-04-30 08:36:50 C 15 32 42.23 -26 01 17.2 649
2001-04-30 08:37:13 C 15 32 43.06 -26 01 16.1 926
2001-04-30 08:37:59 C 15 32 42.78 -26 01 20.8 17.9 c 704
2001-04-30 08:38:04 C 15 32 43.08 -26 01 20.4 926
2001-04-30 08:39:48 C 15 32 43.02 -26 01 28.4 926
2001-04-30 08:42:50 C 15 32 42.03 -26 01 43.1 649
2001-04-30 08:56:22 C 15 32 41.63 -26 02 41.1 649
2001-04-30 08:57:35 C 15 32 42.15 -26 02 45.3 17.1 c 704
2001-04-30 09:02:32 C 15 32 41.41 -26 03 07.8 649
2001-04-30 09:16:27 C 15 32 41.57 -26 04 06.8 18.0 c 704
2001-04-30 09:35:59 C 15 32 40.90 -26 05 31.4 17.7 c 704
2001-05-02 09:07:51 C 15 31 30.54 -30 15 57.9 649
2001-05-02 09:10:59 C 15 31 30.39 -30 16 17.4 649
2001-05-02 09:14:05 C 15 31 30.23 -30 16 36.5 649
2001-05-02 09:17:11 C 15 31 30.10 -30 16 56.3 649