331999 (2005 HA8)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2863577667 ± 2.88e-08
Semi-major axis (a)1.7403220662 AU ± 2.14e-09
Inclination (i)13.39692971° ± 3.14e-06
Long. of Asc. Node (Ω)102.11265939° ± 9.53e-06
Arg. of Perihelion (ω)173.49922753° ± 1.53e-05
Mean Anomaly (M)315.13085205° ± 1.30e-05
Mean Motion (n)0.4293068676°/day ± 7.94e-10
Perihelion dist (q)1.24196733 AU ± 5.01e-08
Aphelion dist (Q)2.23867681 AU ± 5.01e-08
Orbital Period2.29585492 yr ± 4.24e-09
Physical Parameters
H (abs. magnitude)19.29
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.236″
Uncertainty0
Orbit TypeAmor
MOID0.224846 AU
Observations Used248
Oppositions10
Arc Total2005-2023
First Observation Used2005-04-17
Last Observation Used2023-02-24
Observations (266)
Date Type RA Dec Mag Band Observatory
2005-06-02 07:04:20 C 16 34 07.07 +10 56 46.0 18.4 c 704
2005-06-02 07:19:05 C 16 34 06.67 +10 56 29.1 18.8 c 704
2005-06-02 07:19:14 C 16 34 06.68 +10 56 28.6 18.5 c 704
2005-06-02 07:33:58 C 16 34 06.11 +10 56 11.6 18.4 c 704
2005-06-02 07:34:07 C 16 34 06.15 +10 56 11.7 18.4 c 704
2005-06-02 21:19:11 C 16 33 47.87 +10 39 53.3 c A48
2005-06-02 21:28:31 C 16 33 47.57 +10 39 42.3 c A48
2005-06-02 21:37:50 C 16 33 47.31 +10 39 31.4 c A48
2005-06-02 21:48:12 C 16 33 46.99 +10 39 18.7 c A48
2005-06-02 22:38:50 C 16 33 45.50 +10 38 17.8 c A53
2005-06-02 22:48:53 C 16 33 45.26 +10 38 06.3 c A53
2005-06-02 22:59:58 C 16 33 44.87 +10 37 54.4 c A53
2005-06-02 23:09:48 C 16 33 44.60 +10 37 41.4 c A53
2005-06-03 21:30:01 C 16 33 13.78 +10 10 15.1 r A30
2005-06-03 21:31:24 C 16 33 13.74 +10 10 13.4 r A30
2005-06-03 21:33:14 C 16 33 13.69 +10 10 11.0 r A30
2005-06-03 21:35:09 C 16 33 13.63 +10 10 08.9 r A30
2005-06-07 07:49:28 C 16 31 17.00 +08 18 28.4 r 703
2005-06-07 08:12:57 C 16 31 16.28 +08 17 54.6 r 703
2005-06-07 08:24:37 C 16 31 15.92 +08 17 36.8 r 703
2005-06-09 23:09:55 C 16 29 51.47 +06 40 51.3 r 941
2005-06-09 23:11:08 C 16 29 51.44 +06 40 49.2 r 941
2005-06-09 23:11:44 C 16 29 51.43 +06 40 48.2 r 941
2005-06-09 23:13:32 C 16 29 51.41 +06 40 45.2 r 941
2005-06-10 23:16:16 C 16 29 20.12 +06 01 05.7 c J84
2005-06-10 23:18:18 C 16 29 20.07 +06 01 01.7 c J84
2005-06-10 23:20:22 C 16 29 20.02 +06 00 58.9 c J84
2005-06-10 23:22:24 C 16 29 19.98 +06 00 55.4 c J84
2005-06-10 23:24:26 C 16 29 19.90 +06 00 52.1 c J84
2005-06-11 21:12:46 C 16 28 53.02 +05 23 46.8 r A13
2005-06-11 21:27:08 C 16 28 52.62 +05 23 20.9 r A13
2005-06-11 21:40:46 C 16 28 52.25 +05 22 57.9 r A13
2005-06-11 23:35:38 C 16 28 49.37 +05 19 42.8 r 941
2005-06-11 23:36:48 C 16 28 49.31 +05 19 40.5 r 941
2005-06-11 23:38:35 C 16 28 49.26 +05 19 37.3 r 941
2005-06-11 23:40:22 C 16 28 49.20 +05 19 34.1 r 941
2005-06-11 23:41:34 C 16 28 49.16 +05 19 31.8 r 941
2005-06-12 21:24:16 C 16 28 23.62 +04 41 19.1 r A13
2005-06-12 21:37:49 C 16 28 23.25 +04 40 53.7 r A13
2005-06-16 22:35:55 C 16 26 40.78 +01 37 52.1 r 941
2005-06-16 22:36:31 C 16 26 40.77 +01 37 51.2 r 941
2005-06-16 22:37:07 C 16 26 40.75 +01 37 50.0 r 941
2005-06-16 22:38:20 C 16 26 40.71 +01 37 47.7 r 941
2005-06-16 22:39:30 C 16 26 40.69 +01 37 46.0 r 941
2005-06-17 23:37:37 C 16 26 18.57 +00 47 32.1 r A06
2005-06-17 23:43:54 C 16 26 18.48 +00 47 19.5 r A06
2005-06-23 22:17:42 C 16 25 02.52 -04 19 19.2 r A35
2005-06-23 22:20:03 C 16 25 02.59 -04 19 24.1 r A35
2005-06-24 04:27:29 C 16 25 02.31 -04 33 03.9 17.6 o 644
2005-06-24 04:57:44 C 16 25 01.98 -04 34 12.3 17.6 o 644