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
2001-04-18 13:22:41 C 16 11 58.50 +19 08 58.0 d 608
2001-04-18 13:52:38 C 16 11 58.37 +19 08 20.8 d 608
2001-04-24 09:33:46 C 16 11 48.60 +15 33 00.9 c 699
2001-04-24 10:00:55 C 16 11 48.10 +15 32 10.0 c 699
2001-04-24 10:28:08 C 16 11 47.61 +15 31 18.8 c 699
2001-04-24 10:55:25 C 16 11 47.05 +15 30 27.3 c 699
2001-04-24 21:07:38 C 16 11 43.22 +15 10 54.9 557
2001-04-24 21:11:31 C 16 11 43.14 +15 10 47.6 557
2001-04-24 21:15:21 C 16 11 43.08 +15 10 40.5 557
2001-04-24 21:41:40 C 16 11 42.73 +15 09 50.5 046
2001-04-24 21:44:28 C 16 11 42.69 +15 09 45.6 046
2001-04-24 21:46:26 C 16 11 42.66 +15 09 42.0 046
2001-04-24 21:48:55 C 16 11 42.61 +15 09 37.1 046
2001-04-25 09:02:34 C 16 11 33.04 +14 47 47.1 649
2001-04-25 09:07:43 C 16 11 32.94 +14 47 37.1 649
2001-04-25 09:12:56 C 16 11 32.83 +14 47 26.5 649
2001-04-25 09:22:27 C 16 11 33.21 +14 47 12.7 926
2001-04-25 09:23:17 C 16 11 33.22 +14 47 11.2 17.8 926
2001-04-25 09:26:34 C 16 11 33.11 +14 47 04.7 926
2001-04-25 09:27:25 C 16 11 33.12 +14 47 03.5 17.9 926
2001-04-25 09:29:18 C 16 11 33.04 +14 47 00.0 18.4 926
2001-04-25 11:30:26 C 16 11 30.32 +14 42 55.0 919
2001-04-25 11:47:13 C 16 11 30.05 +14 42 21.2 919
2001-04-25 11:49:29 C 16 11 29.99 +14 42 16.0 919
2001-04-26 10:25:56 C 16 11 11.77 +13 55 32.6 17.8 682
2001-04-26 10:58:42 C 16 11 11.06 +13 54 21.8 18.0 682
2001-04-27 00:27:46 C 16 10 58.82 +13 24 57.4 118
2001-04-27 00:29:08 C 16 10 58.80 +13 24 54.4 118
2001-04-27 00:33:08 C 16 10 58.72 +13 24 45.4 118
2001-04-27 12:09:40 C 16 10 46.05 +12 58 48.9 19.0 c 608
2001-04-27 12:24:25 C 16 10 45.56 +12 58 14.5 18.8 c 608
2001-04-27 12:39:55 C 16 10 45.09 +12 57 38.7 18.9 c 608
2001-04-29 21:18:59 C 16 09 30.57 +10 37 23.7 540
2001-04-29 21:27:19 C 16 09 30.31 +10 37 01.9 540
2001-04-30 00:11:17 C 16 09 24.81 +10 29 45.7 046
2001-04-30 00:13:15 C 16 09 24.71 +10 29 40.7 046
2001-04-30 00:14:24 C 16 09 24.66 +10 29 37.9 046
2001-04-30 00:15:35 C 16 09 24.58 +10 29 34.5 046
2001-04-30 00:17:45 C 16 09 24.53 +10 29 28.4 046
2001-05-01 08:15:18 C 16 08 29.37 +09 00 07.9 14.7 682
2001-05-01 09:43:10 C 16 08 25.74 +08 55 50.4 17.3 682
2001-05-02 00:24:23 C 16 07 57.61 +08 11 53.8 118
2001-05-02 00:31:07 C 16 07 57.30 +08 11 33.2 118
2001-05-02 08:42:26 C 16 07 41.23 +07 46 22.2 658
2001-05-02 08:53:05 C 16 07 40.74 +07 45 49.1 658
2001-05-02 08:58:29 C 16 07 40.53 +07 45 32.6 658
2001-05-02 09:52:18 C 16 07 36.93 +07 42 50.8 649
2001-05-02 09:57:25 C 16 07 36.70 +07 42 35.2 649
2001-05-02 10:02:33 C 16 07 36.46 +07 42 19.3 649
2001-05-02 10:07:39 C 16 07 36.24 +07 42 02.6 649