2006 HJ18

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3172879801 ± 1.92e-07
Semi-major axis (a)1.0840381799 AU ± 1.38e-08
Inclination (i)10.25144106° ± 1.68e-05
Long. of Asc. Node (Ω)75.16424347° ± 6.51e-05
Arg. of Perihelion (ω)28.93524223° ± 7.19e-05
Mean Anomaly (M)196.25398008° ± 4.05e-05
Mean Motion (n)0.8732637018°/day ± 1.67e-08
Perihelion dist (q)0.74008590 AU ± 2.08e-07
Aphelion dist (Q)1.42799046 AU ± 2.09e-07
Orbital Period1.12866970 yr ± 2.16e-08
NGA Modelr2
A2-1.17904790e-13 ± 2.57e-14 AU/d²
Physical Parameters
H (abs. magnitude)21.88
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-01
RMS Residual0.418″
Uncertainty0
Orbit TypeApollo
MOID0.143562 AU
Observations Used65
Oppositions2
Arc Total2006-2024
First Observation Used2006-04-23
Last Observation Used2024-06-05
Observations (76)
Date Type RA Dec Mag Band Observatory
2015-04-20 03:01:53 C 08 26 44.43 +62 43 21.5 o 926
2015-04-20 03:12:14 C 08 26 51.73 +62 42 58.0 o 926
2015-04-20 03:22:35 C 08 26 58.75 +62 42 33.8 o 926
2015-04-26 18:50:38 S 09 57 16.637 +54 27 54.25 L C51
2015-04-26 20:25:04 S 09 57 57.578 +54 22 08.90 L C51
2015-04-28 05:29:28 S 10 11 29.556 +52 18 13.57 L C51
2015-04-28 05:29:39 S 10 11 29.621 +52 18 10.94 L C51
2015-04-28 08:38:31 S 10 12 42.538 +52 06 13.39 L C51
2015-04-28 13:22:00 S 10 14 30.314 +51 48 12.46 L C51
2015-04-28 14:56:37 S 10 15 05.978 +51 42 08.35 L C51
2015-04-28 16:31:03 S 10 15 41.251 +51 36 07.78 L C51
2015-04-28 18:05:29 S 10 16 16.558 +51 30 07.45 L C51
2015-04-28 18:05:40 S 10 16 16.582 +51 30 04.64 L C51
2015-05-02 07:18:56 C 10 44 00.45 +45 58 25.8 t 705
2015-05-02 07:20:47 C 10 44 01.12 +45 58 17.3 t 705
2015-05-02 07:22:39 C 10 44 01.39 +45 58 12.5 t 705
2022-07-29 10:54:58 C 21 03 24.716 -46 30 25.99 U F52
2022-07-29 11:06:47 C 21 03 22.979 -46 30 40.02 U F52
2022-07-29 11:18:45 C 21 03 21.298 -46 30 53.88 U F52
2024-05-11 05:50:27 C 09 45 14.63 +34 28 35.2 V 291
2024-05-11 06:16:39 C 09 45 21.55 +34 27 37.1 V 291
2024-05-19 05:21:33 C 10 31 02.88 +27 23 53.4 V 695
2024-05-19 05:30:51 C 10 31 04.80 +27 23 32.6 V 695
2024-05-19 05:40:09 C 10 31 06.74 +27 23 11.4 V 695
2024-06-05 05:27:02 C 11 40 43.57 +13 22 41.4 V 291
2024-06-05 05:47:50 C 11 40 46.43 +13 22 03.1 V 291