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
2021-06-02 05:30:42 C 13 01 09.82 +21 05 01.5 U I41
2021-06-02 05:57:57 C 13 01 10.21 +21 04 31.1 U I41
2021-06-02 05:59:58 C 13 01 10.21 +21 04 28.8 U I41
2021-06-03 05:07:28 C 13 01 37.07 +20 38 41.2 V G96
2021-06-03 05:14:54 C 13 01 37.18 +20 38 32.8 V G96
2021-06-03 05:22:20 C 13 01 37.34 +20 38 24.2 V G96
2021-06-03 05:29:47 C 13 01 37.43 +20 38 16.2 V G96
2021-06-13 09:46:47 C 13 08 57.626 +15 43 01.02 U F51
2021-06-13 10:01:56 C 13 08 58.180 +15 42 41.44 U F51
2021-06-13 10:17:01 C 13 08 58.760 +15 42 21.66 U F51
2023-01-22 08:54:39 C 09 00 36.651 +27 37 42.33 U F52
2023-01-22 09:11:26 C 09 00 35.651 +27 37 51.96 U F52
2023-01-22 09:28:12 C 09 00 34.647 +27 38 01.83 U F52
2023-02-24 01:22:10 C 08 14 13.97 +33 10 33.1 V H21
2023-02-24 01:33:11 C 08 14 13.49 +33 10 35.7 V H21
2023-02-24 01:37:13 C 08 14 13.29 +33 10 37.0 V H21