1998 HM1

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.3591860000
Semi-major axis (a)1.4076015000 AU
Inclination (i)3.18834000°
Long. of Asc. Node (Ω)201.60331000°
Arg. of Perihelion (ω)69.86846000°
Mean Anomaly (M)154.99132000°
Mean Motion (n)0.5901800200°/day
Perihelion dist (q)0.90201070 AU
Aphelion dist (Q)1.91319230 AU
Orbital Period1.67001200 yr
Physical Parameters
H (abs. magnitude)24.42
G (slope)0.15
Orbit Solution
SourceMPC
Solution Date
RMS Residual0.730″
Uncertainty7
Orbit TypeApollo
MOID0.016065 AU
Observations Used43
Oppositions1
Arc Total
First Observation Used
Last Observation Used1998-04-25
Observations (44)
Date Type RA Dec Mag Band Observatory
1998-04-18 05:59:43 c 12 31 35.21 +00 56 24.7 i 691
1998-04-18 06:29:31 c 12 31 32.45 +00 58 11.5 i 691
1998-04-18 06:59:29 c 12 31 29.67 +00 59 58.8 i 691
1998-04-18 07:23:39 c 12 31 27.47 +01 01 26.4 i 691
1998-04-18 07:29:18 c 12 31 26.95 +01 01 46.3 i 691
1998-04-18 07:34:39 c 12 31 26.44 +01 02 06.2 i 691
1998-04-19 05:35:38 c 12 30 06.96 +02 27 08.5 i 691
1998-04-19 05:41:03 c 12 30 06.45 +02 27 30.9 i 691
1998-04-20 03:32:37 C 12 28 36.86 +04 04 36.9 19.3 a 704
1998-04-20 04:01:39 C 12 28 33.66 +04 06 57.5 19.4 a 704
1998-04-20 04:30:51 C 12 28 30.46 +04 09 18.0 19.6 a 704
1998-04-20 05:00:55 C 12 28 26.98 +04 11 43.1 19.1 a 704
1998-04-20 06:40:03 c 12 28 16.26 +04 19 47.6 i 691
1998-04-20 06:45:26 c 12 28 15.64 +04 20 12.6 i 691
1998-04-20 06:51:14 c 12 28 15.02 +04 20 41.5 i 691
1998-04-20 12:38:13 C 12 27 51.61 +04 49 23.3 z 402
1998-04-20 12:41:14 C 12 27 51.21 +04 49 39.6 z 402
1998-04-20 12:44:14 C 12 27 50.81 +04 49 57.3 z 402
1998-04-20 20:56:07 C 12 27 09.82 +05 32 20.5 046
1998-04-20 20:57:26 C 12 27 09.71 +05 32 26.6 046
1998-04-20 20:58:32 C 12 27 09.55 +05 32 33.0 046
1998-04-20 20:59:34 C 12 27 09.42 +05 32 39.3 046
1998-04-21 06:52:31 c 12 26 14.04 +06 28 32.3 i 691
1998-04-21 06:58:14 c 12 26 13.34 +06 29 03.5 i 691
1998-04-21 07:04:09 c 12 26 12.52 +06 29 40.0 i 691
1998-04-22 23:33:00 C 12 21 54.03 +11 04 03.1 046
1998-04-22 23:33:55 C 12 21 53.89 +11 04 10.6 046
1998-04-22 23:34:54 C 12 21 53.65 +11 04 18.7 046
1998-04-22 23:35:50 C 12 21 53.58 +11 04 25.5 046
1998-04-22 23:36:42 C 12 21 53.36 +11 04 33.2 046
1998-04-22 23:37:39 C 12 21 53.29 +11 04 39.7 046
1998-04-23 21:11:44 C 12 19 02.21 +14 12 53.0 557
1998-04-23 21:13:03 C 12 19 01.97 +14 13 06.0 557
1998-04-23 21:13:22 C 12 19 02.02 +14 13 12.2 046
1998-04-23 21:14:24 C 12 19 01.74 +14 13 18.3 557
1998-04-23 21:15:15 C 12 19 01.63 +14 13 30.6 046
1998-04-23 21:15:46 C 12 19 01.44 +14 13 31.1 557
1998-04-23 21:16:41 C 12 19 01.31 +14 13 43.3 046
1998-04-23 23:11:03 C 12 18 38.57 +14 32 04.8 118
1998-04-23 23:12:59 C 12 18 38.21 +14 32 22.2 118
1998-04-23 23:16:22 C 12 18 37.59 +14 32 53.8 118
1998-04-25 04:53:33 c 12 13 26.46 +20 05 10.3 i 691
1998-04-25 05:02:06 c 12 13 24.00 +20 07 00.8 i 691
1998-04-25 05:10:24 c 12 13 21.70 +20 08 48.0 i 691