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
2021-04-13 09:45:01 C 13 33 28.48 +29 47 34.2 U I41
2021-04-13 09:46:28 C 13 33 28.42 +29 47 34.8 U I41
2021-04-17 06:22:07 C 13 28 46.83 +30 16 28.3 U I41
2021-04-17 06:44:07 C 13 28 45.61 +30 16 34.0 U I41
2021-04-17 06:53:24 C 13 28 44.99 +30 16 36.6 V G96
2021-04-17 07:01:47 C 13 28 44.51 +30 16 38.6 V G96
2021-04-17 07:10:10 C 13 28 44.04 +30 16 40.8 V G96
2021-04-17 07:18:35 C 13 28 43.57 +30 16 42.7 V G96
2021-04-17 07:22:37 C 13 28 43.46 +30 16 43.6 U I41
2021-04-17 09:13:19 C 13 28 37.29 +30 17 10.2 U I41
2021-04-17 09:58:47 C 13 28 34.78 +30 17 20.8 U I41
2021-04-19 07:11:54 C 13 26 15.26 +30 26 57.2 U I41
2021-04-19 08:45:53 C 13 26 10.01 +30 27 13.5 U I41
2021-04-20 04:13:12 C 13 25 10.82 +30 30 22.7 U I41
2021-04-20 05:34:42 C 13 25 06.28 +30 30 36.3 U I41
2021-04-20 06:55:43 C 13 25 01.77 +30 30 48.9 U I41
2021-04-20 09:30:41 C 13 24 53.14 +30 31 10.4 U I41
2021-04-21 05:22:22 C 13 23 52.76 +30 33 42.3 U I41
2021-04-21 05:55:53 C 13 23 50.91 +30 33 46.5 U I41
2021-04-21 08:07:48 C 13 23 43.56 +30 34 00.6 U I41
2021-04-21 08:48:55 C 13 23 41.28 +30 34 05.0 U I41
2021-05-04 06:22:51 C 13 09 12.60 +29 57 09.2 V G96
2021-05-04 06:30:57 C 13 09 12.24 +29 57 06.4 V G96
2021-05-04 06:39:02 C 13 09 11.89 +29 57 03.5 V G96
2021-05-04 06:47:08 C 13 09 11.54 +29 57 00.8 V G96
2021-05-04 06:52:52 C 13 09 11.39 +29 56 58.6 U I41
2021-05-04 07:42:19 C 13 09 09.21 +29 56 41.3 U I41
2021-05-04 07:56:07 C 13 09 08.62 +29 56 36.4 U I41
2021-05-06 07:11:00 C 13 07 21.24 +29 38 40.0 U I41
2021-05-06 07:41:57 C 13 07 19.98 +29 38 26.9 U I41
2021-05-06 08:53:27 C 13 07 17.15 +29 37 56.2 U I41
2021-05-08 04:48:51 C 13 05 46.69 +29 18 24.5 U I41
2021-05-08 07:13:12 C 13 05 41.29 +29 17 15.3 U I41
2021-05-08 07:38:21 C 13 05 40.37 +29 17 02.8 U I41
2021-05-08 07:56:04 C 13 05 39.75 +29 16 54.2 U I41
2021-05-10 06:41:34 C 13 04 13.476 +28 53 05.32 U F51
2021-05-10 06:59:36 C 13 04 12.866 +28 52 55.78 U F51
2021-05-10 07:17:40 C 13 04 12.253 +28 52 46.09 U F51
2021-05-10 07:35:43 C 13 04 11.638 +28 52 36.44 U F51
2021-05-11 05:10:56 C 13 03 34.83 +28 40 31.9 U I41
2021-05-11 06:27:12 C 13 03 32.42 +28 39 48.2 U I41
2021-05-12 07:12:50 C 13 02 53.04 +28 25 13.6 U I41
2021-05-12 07:29:15 C 13 02 52.56 +28 25 03.7 U I41
2021-05-12 08:09:35 C 13 02 51.38 +28 24 38.7 U I41
2021-05-18 05:27:35 C 13 00 08.79 +26 47 03.2 V G96
2021-05-18 05:34:58 C 13 00 08.65 +26 46 57.6 V G96
2021-05-18 05:42:20 C 13 00 08.53 +26 46 51.9 V G96
2021-05-18 05:49:42 C 13 00 08.41 +26 46 46.2 V G96
2021-05-29 05:37:47 C 12 59 47.75 +22 47 27.4 U I41
2021-05-29 07:42:44 C 12 59 48.65 +22 45 17.7 U I41