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
1998-04-20 22:53:36 C 12 54 45.55 -10 05 31.0 557
1998-04-20 22:56:27 C 12 54 45.68 -10 05 27.3 557
1998-04-22 03:47:44 C 12 55 40.88 -09 35 07.6 19.3 a 704
1998-04-22 04:14:50 C 12 55 41.55 -09 34 39.3 19.1 a 704
1998-04-22 04:41:51 C 12 55 42.36 -09 34 11.9 19.0 a 704
1998-04-22 05:09:05 C 12 55 42.90 -09 33 42.8 19.5 a 704
1998-04-22 05:36:07 C 12 55 43.61 -09 33 13.8 19.1 a 704
1998-04-22 23:54:22 C 12 56 18.97 -09 13 53.2 046
1998-04-22 23:58:14 C 12 56 19.13 -09 13 48.6 046
1998-04-23 00:00:49 C 12 56 19.15 -09 13 45.8 046
1998-04-23 21:54:21 C 12 57 05.13 -08 50 20.5 046
1998-04-23 21:57:37 C 12 57 05.24 -08 50 16.9 046
1998-04-23 22:00:40 C 12 57 05.32 -08 50 13.6 046
1998-04-25 23:29:00 C 12 58 55.23 -07 56 38.1 118
1998-04-25 23:32:04 C 12 58 55.34 -07 56 34.6 118
1998-04-25 23:34:58 C 12 58 55.43 -07 56 31.3 118
1998-04-26 14:46:43 C 12 59 31.55 -07 39 18.6 422
1998-04-26 14:49:01 C 12 59 31.58 -07 39 14.7 422
1998-04-26 14:51:19 C 12 59 31.69 -07 39 14.1 422
1998-04-26 22:16:37 C 12 59 50.64 -07 31 44.1 046
1998-04-26 22:31:47 C 12 59 51.17 -07 31 28.7 046
1998-04-26 22:36:35 C 12 59 51.32 -07 31 22.3 046
1998-04-27 17:05:47 C 13 00 36.50 -07 10 27.3 422
1998-04-27 17:10:23 C 13 00 36.65 -07 10 21.2 422
1998-04-27 21:26:32 C 13 00 49.37 -07 06 21.2 557
1998-04-27 21:35:04 C 13 00 49.71 -07 06 11.8 557
1998-04-27 21:37:55 C 13 00 49.82 -07 06 08.8 557
1998-04-30 13:55:29 C 13 03 46.70 -05 55 31.1 z 402
1998-04-30 13:59:29 C 13 03 46.88 -05 55 26.6 z 402
1998-04-30 14:03:28 C 13 03 47.05 -05 55 22.4 z 402
1998-05-04 14:44:43 C 13 08 55.19 -04 10 36.4 z 402
1998-05-04 14:48:44 C 13 08 55.42 -04 10 31.1 z 402
1998-05-04 14:52:43 C 13 08 55.60 -04 10 27.2 z 402
1998-05-11 20:53:31 C 13 20 20.64 -01 13 49.4 118
1998-05-15 11:35:37 C 13 27 01.18 +00 05 43.6 426
1998-05-15 11:49:20 C 13 27 02.19 +00 05 55.2 426
1998-05-15 12:03:06 C 13 27 03.23 +00 06 07.9 426
1998-05-19 13:56:29 C 13 35 17.42 +01 24 55.7 360
1998-05-19 14:00:29 C 13 35 17.76 +01 24 58.7 360
1998-05-19 14:05:15 C 13 35 18.16 +01 25 01.6 360
1998-05-19 22:15:36 C 13 36 01.46 +01 31 01.3 557
1998-05-19 22:21:55 C 13 36 01.95 +01 31 06.5 557
1998-05-19 22:25:34 C 13 36 02.32 +01 31 09.8 557
1998-05-20 13:12:25 C 13 37 21.61 +01 42 05.7 z 402
1998-05-20 13:15:25 C 13 37 21.86 +01 42 07.9 z 402
1998-05-20 13:18:26 C 13 37 22.12 +01 42 10.2 z 402
1998-05-22 12:40:32 C 13 41 41.73 +02 15 03.3 z 402
1998-05-22 12:43:31 C 13 41 41.97 +02 15 04.6 z 402
1998-05-22 12:46:31 C 13 41 42.25 +02 15 06.9 z 402
1998-05-26 13:20:45 C 13 50 58.43 +03 12 54.8 360