488465 (1998 HK1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4268168262 ± 8.39e-08
Semi-major axis (a)2.1591287938 AU ± 1.57e-09
Inclination (i)7.92146136° ± 7.56e-06
Long. of Asc. Node (Ω)213.52686241° ± 1.61e-05
Arg. of Perihelion (ω)24.96447302° ± 3.29e-05
Mean Anomaly (M)243.02413250° ± 1.11e-05
Mean Motion (n)0.3106665199°/day ± 3.39e-10
Perihelion dist (q)1.23757629 AU ± 1.81e-07
Aphelion dist (Q)3.08068129 AU ± 1.81e-07
Orbital Period3.17261829 yr ± 3.46e-09
Physical Parameters
H (abs. magnitude)19.84
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.480″
Uncertainty0
Orbit TypeAmor
MOID0.233497 AU
Observations Used300
Oppositions15
Arc Total1998-2020
First Observation Used1998-04-01
Last Observation Used2020-01-23
Observations (310)
Date Type RA Dec Mag Band Observatory
1998-04-01 05:45:57 C 12 46 00.89 -16 35 17.8 19.2 a 704
1998-04-01 06:14:49 C 12 46 00.91 -16 34 59.8 19.0 a 704
1998-04-01 06:43:38 C 12 46 01.13 -16 34 42.6 19.8 a 704
1998-04-01 07:12:50 C 12 46 01.27 -16 34 28.1 19.4 a 704
1998-04-01 07:41:44 C 12 46 01.27 -16 34 10.2 19.1 a 704
1998-04-18 06:18:10 C 12 52 57.12 -11 11 15.3 18.5 a 704
1998-04-18 06:48:13 C 12 52 57.68 -11 10 45.2 19.1 a 704
1998-04-18 07:18:08 C 12 52 58.28 -11 10 16.1 19.2 a 704
1998-04-18 07:47:56 C 12 52 58.80 -11 09 45.9 19.2 a 704
1998-04-18 08:17:45 C 12 52 59.34 -11 09 16.2 19.2 a 704
1998-04-19 00:04:43 C 12 53 24.87 -10 53 31.1 557
1998-04-19 00:11:25 C 12 53 24.95 -10 53 23.4 557
1998-04-19 00:15:59 C 12 53 25.03 -10 53 19.2 557
1998-04-19 05:34:56 C 12 53 34.75 -10 47 51.9 18.2 a 704
1998-04-19 06:06:30 C 12 53 35.41 -10 47 20.1 18.3 a 704
1998-04-19 06:37:37 C 12 53 35.99 -10 46 48.7 18.1 a 704
1998-04-19 07:08:42 C 12 53 36.63 -10 46 16.4 18.4 a 704
1998-04-19 07:39:28 C 12 53 37.32 -10 45 43.8 18.5 a 704
1998-04-19 12:45:38 C 12 53 46.93 -10 40 34.3 z 402
1998-04-19 12:48:37 C 12 53 47.00 -10 40 32.2 z 402
1998-04-19 12:51:38 C 12 53 47.06 -10 40 28.1 z 402
1998-04-19 21:56:57 C 12 54 02.02 -10 31 15.2 046
1998-04-19 21:59:11 C 12 54 02.18 -10 31 13.5 557
1998-04-19 22:02:17 C 12 54 02.17 -10 31 09.7 046
1998-04-19 22:02:33 C 12 54 02.21 -10 31 09.4 557
1998-04-19 22:04:58 C 12 54 02.27 -10 31 07.7 046
1998-04-19 22:05:53 C 12 54 02.18 -10 31 05.7 557
1998-04-19 22:09:14 C 12 54 02.32 -10 31 04.8 557
1998-04-20 01:49:55 C 12 54 08.84 -10 26 46.2 860
1998-04-20 01:57:04 C 12 54 08.97 -10 26 37.6 860
1998-04-20 02:02:52 C 12 54 09.11 -10 26 32.5 860
1998-04-20 03:41:24 C 12 54 12.88 -10 25 18.1 18.2 a 704
1998-04-20 04:10:36 C 12 54 13.50 -10 24 46.9 18.0 a 704
1998-04-20 04:39:38 C 12 54 14.14 -10 24 17.8 18.4 a 704
1998-04-20 05:09:43 C 12 54 14.80 -10 23 47.4 18.5 a 704
1998-04-20 05:38:37 C 12 54 15.13 -10 23 19.1 18.7 a 704
1998-04-20 05:46:51 C 12 54 15.65 -10 23 07.9 17.9 a 704
1998-04-20 06:15:45 C 12 54 16.29 -10 22 37.2 18.5 a 704
1998-04-20 06:44:45 C 12 54 16.93 -10 22 09.3 18.4 a 704
1998-04-20 07:13:41 C 12 54 17.57 -10 21 38.7 18.2 a 704
1998-04-20 07:42:34 C 12 54 17.87 -10 21 10.2 18.4 a 704
1998-04-20 12:48:59 C 12 54 28.32 -10 15 53.1 z 402
1998-04-20 12:51:59 C 12 54 28.37 -10 15 49.5 z 402
1998-04-20 12:54:58 C 12 54 28.47 -10 15 47.5 z 402
1998-04-20 19:39:00 C 12 54 40.95 -10 08 50.1 z 104
1998-04-20 19:43:59 C 12 54 41.09 -10 08 44.7 z 104
1998-04-20 19:49:29 C 12 54 41.23 -10 08 39.5 z 104
1998-04-20 21:37:45 C 12 54 43.76 -10 06 49.0 046
1998-04-20 21:41:19 C 12 54 43.82 -10 06 45.5 046
1998-04-20 21:44:00 C 12 54 43.90 -10 06 42.8 046