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
2017-12-21 05:06:20 C 04 55 19.79 +13 47 25.4 u H21
2017-12-21 05:24:29 C 04 55 18.70 +13 47 29.3 u H21
2017-12-21 05:45:59 C 04 55 17.39 +13 47 34.1 u H21
2017-12-24 06:44:39 C 04 51 08.281 +14 03 49.93 U F51
2017-12-24 07:03:02 C 04 51 07.217 +14 03 54.26 U F51
2017-12-24 07:21:22 C 04 51 06.190 +14 03 58.41 U F51
2019-09-11 13:15:24 C 03 14 09.760 -08 21 30.91 U F51
2019-09-11 13:52:17 C 03 14 09.712 -08 21 46.22 U F51
2019-09-11 14:10:45 C 03 14 09.713 -08 21 53.71 U F51
2019-10-06 12:04:07 C 02 59 31.239 -12 16 51.82 U F51
2019-10-06 12:21:42 C 02 59 30.345 -12 16 57.40 U F51
2019-10-06 12:39:15 C 02 59 29.444 -12 17 03.11 U F51
2019-10-06 12:56:52 C 02 59 28.543 -12 17 08.83 U F51
2019-10-06 13:07:37 C 02 59 27.998 -12 17 12.08 U F51
2019-10-06 13:24:36 C 02 59 27.120 -12 17 17.49 U F51
2019-10-06 13:58:41 C 02 59 25.369 -12 17 28.38 U F51
2019-10-27 09:57:01 C 02 29 48.193 -13 38 04.20 U F52
2019-10-27 10:12:54 C 02 29 47.140 -13 38 03.73 U F52
2019-10-27 10:28:46 C 02 29 46.097 -13 38 03.15 U F52
2019-10-27 10:44:42 C 02 29 45.032 -13 38 02.98 U F52
2019-11-01 06:57:05 C 02 22 29.70 -13 29 50.3 V G96
2019-11-01 07:04:29 C 02 22 29.22 -13 29 49.2 V G96
2019-11-01 07:11:53 C 02 22 28.72 -13 29 48.3 V G96
2019-11-01 07:19:16 C 02 22 28.26 -13 29 47.7 V G96
2019-11-01 09:52:15 C 02 22 19.039 -13 29 28.14 U F52
2019-11-01 10:07:13 C 02 22 18.079 -13 29 26.32 U F52
2019-11-01 10:22:09 C 02 22 17.131 -13 29 24.10 U F52
2019-11-01 10:37:03 C 02 22 16.172 -13 29 22.73 U F52
2019-12-04 02:24:34 C 01 51 19.14 -08 47 08.8 u H21
2019-12-04 02:30:24 C 01 51 19.04 -08 47 05.5 u H21
2019-12-04 02:38:17 C 01 51 18.92 -08 47 01.6 u H21
2021-01-15 14:14:46 C 13 01 16.196 +10 27 22.95 U F51
2021-01-15 14:31:02 C 13 01 17.165 +10 27 25.40 U F51
2021-01-15 14:47:16 C 13 01 18.178 +10 27 27.44 U F51
2021-01-15 15:03:35 C 13 01 19.171 +10 27 29.75 U F51
2021-02-15 11:45:59 C 13 40 40.11 +14 24 07.3 V V00
2021-02-15 11:52:51 C 13 40 40.37 +14 24 10.7 V V00
2021-02-15 11:59:42 C 13 40 40.61 +14 24 14.4 V V00
2021-02-15 12:06:33 C 13 40 40.88 +14 24 17.9 V V00
2021-04-05 08:26:56 C 13 42 23.37 +28 13 25.4 V G96
2021-04-05 08:35:23 C 13 42 22.99 +28 13 30.3 V G96
2021-04-05 08:42:52 C 13 42 22.64 +28 13 34.7 V G96
2021-04-05 08:50:21 C 13 42 22.31 +28 13 39.3 V G96
2021-04-07 05:44:38 C 13 40 28.31 +28 39 06.8 U I41
2021-04-07 06:41:40 C 13 40 25.62 +28 39 38.8 U I41
2021-04-07 07:11:26 C 13 40 24.19 +28 39 55.2 U I41
2021-04-07 11:20:11 C 13 40 12.29 +28 42 08.4 U I41
2021-04-13 06:27:26 C 13 33 39.14 +29 46 20.5 U I41
2021-04-13 06:44:02 C 13 33 38.23 +29 46 26.9 U I41
2021-04-13 07:46:06 C 13 33 34.90 +29 46 50.6 U I41