2025 HS18

NEO MOID ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.5809761224 ± 1.14e-04
Semi-major axis (a)2.3851038443 AU ± 6.46e-04
Inclination (i)1.09793947° ± 1.47e-04
Long. of Asc. Node (Ω)48.97256425° ± 2.52e-04
Arg. of Perihelion (ω)152.05713128° ± 3.57e-04
Mean Anomaly (M)58.82839079° ± 2.40e-02
Mean Motion (n)0.2675785756°/day ± 1.09e-04
Perihelion dist (q)0.99941546 AU ± 3.83e-04
Aphelion dist (Q)3.77079223 AU ± 1.06e-03
Orbital Period3.68350224 yr ± 1.50e-03
Physical Parameters
H (abs. magnitude)27.34
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-03
RMS Residual0.260″
Uncertainty2
Orbit TypeApollo
MOID0.005539 AU
Observations Used103
Oppositions1
Arc Total2025-2025
First Observation Used2025-04-30
Last Observation Used2025-05-03
Observations (106)
Date Type RA Dec Mag Band Observatory
2025-04-30 20:47:20 B 14 10 04.558 +00 06 30.89 X B72
2025-04-30 20:49:50 B 14 10 11.93 +00 06 24.4 X K83
2025-04-30 20:59:14 B 14 10 37.14 +00 02 41.0 X K83
2025-04-30 20:59:31 C 14 10 23.06 +00 02 24.2 X C40
2025-04-30 21:04:19 C 14 10 35.87 +00 00 29.1 X C40
2025-04-30 21:09:02 C 14 10 48.48 -00 01 23.7 X C40
2025-04-30 21:14:24 B 14 11 18.33 -00 03 24.3 X K78
2025-04-30 21:21:08 B 14 11 36.30 -00 06 04.0 X K78
2025-04-30 21:24:48 C 14 11 46.24 -00 07 42.4 V 203
2025-04-30 21:27:51 B 14 11 54.25 -00 08 43.8 X K78
2025-04-30 21:30:59 B 14 11 59.452 -00 10 50.38 W G34
2025-04-30 21:31:48 B 14 12 03.485 -00 10 13.33 q L47
2025-04-30 21:33:34 B 14 12 06.383 -00 11 51.54 W G34
2025-04-30 21:34:03 B 14 12 09.552 -00 11 07.01 q L47
2025-04-30 21:35:34 B 14 12 14.950 -00 12 00.54 W 204
2025-04-30 21:36:10 B 14 12 13.238 -00 12 52.84 W G34
2025-04-30 21:36:17 B 14 12 15.362 -00 11 59.35 q L47
2025-04-30 21:38:31 B 14 12 21.449 -00 12 53.06 q L47
2025-04-30 21:40:44 C 14 12 28.67 -00 14 00.5 V 203
2025-04-30 21:41:00 B 14 12 29.417 -00 14 09.31 W 204
2025-04-30 21:46:26 B 14 12 43.877 -00 16 18.12 W 204
2025-04-30 21:47:39 B 14 12 51.85 -00 16 36.2 V I93
2025-04-30 21:51:24 B 14 12 55.83 -00 19 08.6 Z L65
2025-04-30 21:54:23 B 14 13 09.74 -00 19 15.5 V I93
2025-04-30 22:01:04 B 14 13 27.48 -00 21 53.1 V I93
2025-04-30 22:08:21 B 14 13 40.243 -00 24 37.69 q L47
2025-04-30 22:09:45 B 14 13 43.937 -00 25 10.67 q L47
2025-04-30 22:11:08 B 14 13 47.628 -00 25 43.68 q L47
2025-04-30 22:12:31 B 14 13 51.336 -00 26 16.66 q L47
2025-04-30 22:17:17 B 14 14 04.80 -00 29 18.9 Z L65
2025-04-30 22:19:03 B 14 14 07.83 -00 29 09.1 X 595
2025-04-30 22:22:23 B 14 14 16.62 -00 30 27.2 X 595
2025-04-30 22:25:42 B 14 14 25.39 -00 31 45.1 X 595
2025-04-30 22:31:30 B 14 14 42.209 -00 34 30.94 X K87
2025-04-30 22:43:06 B 14 15 13.27 -00 39 25.8 Z L65
2025-04-30 22:46:00 B 14 15 20.450 -00 40 10.88 X K87
2025-04-30 23:00:04 B 14 15 57.482 -00 45 39.82 X K87
2025-04-30 23:05:55 C 14 16 18.293 -00 48 08.35 W J95
2025-04-30 23:08:24 C 14 16 24.845 -00 49 06.71 W J95
2025-04-30 23:10:53 C 14 16 31.356 -00 50 04.13 W J95
2025-04-30 23:11:58 B 14 16 28.666 -00 50 17.63 Z K74
2025-04-30 23:13:35 C 14 16 38.446 -00 51 07.02 W J95
2025-04-30 23:19:55 B 14 16 49.534 -00 53 23.28 Z K74
2025-04-30 23:26:26 B 14 17 06.588 -00 55 54.37 X K87
2025-04-30 23:27:52 B 14 17 10.339 -00 56 27.96 Z K74
2025-04-30 23:39:19 B 14 17 40.277 -01 00 53.93 Z K74
2025-04-30 23:39:27 B 14 17 40.682 -01 00 57.35 X K87
2025-04-30 23:46:45 B 14 17 59.710 -01 03 46.33 Z K74
2025-04-30 23:54:08 B 14 18 18.970 -01 06 37.19 Z K74
2025-05-01 23:48:43 B 15 15 07.570 -08 57 55.22 Z K74