516398 (2001 HW15)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.2529866187 ± 4.20e-08
Semi-major axis (a)1.5253648305 AU ± 2.43e-09
Inclination (i)18.98584843° ± 8.90e-06
Long. of Asc. Node (Ω)56.47617765° ± 4.39e-06
Arg. of Perihelion (ω)194.90310609° ± 1.54e-05
Mean Anomaly (M)355.50051677° ± 1.82e-05
Mean Motion (n)0.5231806617°/day ± 1.25e-09
Perihelion dist (q)1.13946794 AU ± 6.41e-08
Aphelion dist (Q)1.91126172 AU ± 6.42e-08
Orbital Period1.88391192 yr ± 4.50e-09
Physical Parameters
H (abs. magnitude)20.35
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-05-31
RMS Residual0.354″
Uncertainty0
Orbit TypeAmor
MOID0.132932 AU
Observations Used181
Oppositions11
Arc Total2001-2024
First Observation Used2001-04-18
Last Observation Used2024-12-03
Observations (194)
Date Type RA Dec Mag Band Observatory
2001-05-03 08:56:11 C 16 06 47.69 +06 28 57.8 926
2001-05-03 08:57:17 C 16 06 47.62 +06 28 54.0 926
2001-05-03 08:58:23 C 16 06 47.54 +06 28 50.6 926
2001-05-03 10:44:23 C 16 06 43.03 +06 22 46.3 658
2001-05-03 10:51:49 C 16 06 42.66 +06 22 22.9 658
2001-05-03 10:56:20 C 16 06 42.44 +06 22 07.7 658
2001-05-04 00:06:00 C 16 06 12.16 +05 37 43.7 118
2001-05-04 00:17:40 C 16 06 11.57 +05 37 03.7 118
2001-05-04 00:25:18 C 16 06 11.17 +05 36 37.7 118
2001-05-09 06:23:48 C 15 59 50.14 -02 45 45.7 649
2001-05-09 06:27:47 C 15 59 49.81 -02 46 06.4 649
2001-05-09 06:31:48 C 15 59 49.54 -02 46 24.2 649
2001-05-10 20:49:45 C 15 57 22.63 -05 48 09.0 046
2001-05-10 20:52:11 C 15 57 22.44 -05 48 21.5 046
2001-05-10 20:53:06 C 15 57 22.37 -05 48 25.5 046
2001-05-10 20:55:18 C 15 57 22.19 -05 48 36.7 046
2001-05-10 21:19:52 C 15 57 20.55 -05 50 37.3 151
2001-05-10 21:21:12 C 15 57 20.49 -05 50 43.4 151
2001-05-10 21:23:49 C 15 57 20.27 -05 50 56.6 151
2001-05-10 21:25:31 C 15 57 20.13 -05 51 05.3 151
2001-05-10 21:26:58 C 15 57 20.01 -05 51 12.1 151
2001-05-10 21:28:34 C 15 57 19.90 -05 51 19.8 151
2001-05-10 23:42:25 C 15 57 08.91 -06 02 21.9 118
2001-05-10 23:43:59 C 15 57 08.77 -06 02 29.1 118
2001-05-10 23:46:18 C 15 57 08.60 -06 02 41.0 118
2001-05-11 23:03:46 C 15 55 30.58 -08 00 15.0 151
2001-05-11 23:05:53 C 15 55 30.43 -08 00 26.0 151
2001-05-11 23:09:41 C 15 55 30.09 -08 00 45.4 151
2001-05-11 23:10:44 C 15 55 29.98 -08 00 51.5 151
2001-05-11 23:13:31 C 15 55 29.78 -08 01 05.1 151
2001-05-11 23:19:12 C 15 55 29.28 -08 01 34.7 151
2001-05-11 23:21:27 C 15 55 29.09 -08 01 46.4 151
2001-05-12 13:14:38 C 15 54 28.59 -09 14 01.9 342
2001-05-12 13:31:52 C 15 54 27.05 -09 15 34.4 342
2001-05-12 13:55:19 C 15 54 25.01 -09 17 37.1 342
2001-05-12 15:13:21 C 15 54 18.08 -09 24 26.9 360
2001-05-12 15:15:35 C 15 54 17.88 -09 24 39.0 360
2001-05-12 15:17:43 C 15 54 17.69 -09 24 50.0 360
2001-05-12 22:41:12 C 15 53 43.98 -10 04 19.9 113
2001-05-12 22:42:23 C 15 53 43.85 -10 04 26.7 113
2001-05-12 22:43:35 C 15 53 43.76 -10 04 33.0 113
2001-05-12 22:44:48 C 15 53 43.65 -10 04 39.6 113
2001-05-12 22:45:59 C 15 53 43.56 -10 04 46.1 113
2001-05-12 22:47:11 C 15 53 43.44 -10 04 52.7 113
2001-05-12 22:48:24 C 15 53 43.36 -10 04 59.1 113
2001-05-13 00:13:00 C 15 53 35.52 -10 12 31.0 118
2001-05-13 00:15:02 C 15 53 35.33 -10 12 41.8 118
2001-05-13 00:21:24 C 15 53 34.78 -10 13 15.6 118
2001-05-13 05:46:24 C 15 53 10.77 -10 42 20.2 18.6 739
2001-05-13 06:06:57 C 15 53 09.01 -10 44 12.3 18.5 739