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
2001-05-13 06:12:42 C 15 53 08.58 -10 44 42.9 18.6 739
2001-05-13 17:24:27 C 15 52 12.37 -11 45 42.5 402
2001-05-13 17:26:18 C 15 52 12.24 -11 45 53.8 402
2001-05-13 17:28:07 C 15 52 12.02 -11 46 04.0 402
2001-05-15 11:36:36 C 15 48 36.80 -15 44 01.9 c 608
2001-05-15 11:51:57 C 15 48 35.15 -15 45 30.4 c 608
2001-05-15 12:07:24 C 15 48 33.51 -15 46 59.7 c 608
2001-05-16 22:45:59 C 15 45 20.97 -19 11 29.9 118
2001-05-16 22:48:48 C 15 45 20.69 -19 11 46.1 118
2001-05-16 22:52:57 C 15 45 20.24 -19 12 10.9 118
2001-05-17 06:37:11 C 15 44 35.22 -19 58 28.2 16.6 c 704
2001-05-17 06:54:13 C 15 44 33.29 -20 00 10.6 16.4 c 704
2001-05-17 07:11:15 C 15 44 31.34 -20 01 53.0 16.1 c 704
2001-05-17 07:28:18 C 15 44 29.39 -20 03 35.7 16.3 c 704
2001-05-17 07:45:16 C 15 44 27.41 -20 05 17.8 16.5 c 704
2001-05-20 04:52:45 C 15 37 06.30 -27 07 05.2 d 808
2001-05-20 05:03:45 C 15 37 04.82 -27 08 13.6 d 808
2001-05-20 07:15:18 C 15 36 50.14 -27 22 48.3 17.2 c 704
2001-05-20 07:32:17 C 15 36 47.93 -27 24 33.8 17.5 c 704
2001-05-20 07:49:10 C 15 36 45.69 -27 26 17.3 17.8 c 704
2001-05-20 08:23:14 C 15 36 41.22 -27 29 46.0 17.8 c 704
2001-05-21 06:27:21 C 15 34 08.24 -29 45 45.1 17.5 c 704
2001-05-21 06:43:54 C 15 34 05.99 -29 47 27.7 17.5 c 704
2001-05-21 07:00:23 C 15 34 03.71 -29 49 09.0 17.8 c 704
2001-05-21 07:16:55 C 15 34 01.43 -29 50 50.7 17.6 c 704
2001-05-21 07:33:25 C 15 33 59.11 -29 52 31.9 18.0 c 704
2001-05-31 16:52:38 C 14 57 50.66 -52 32 00.6 413
2001-05-31 16:54:25 C 14 57 50.35 -52 32 08.4 413
2001-05-31 16:56:12 C 14 57 50.06 -52 32 16.4 413
2001-06-01 17:52:28 C 14 53 37.32 -54 19 35.6 413
2001-06-01 17:56:22 C 14 53 36.66 -54 19 51.0 413
2001-06-01 17:58:16 C 14 53 36.37 -54 19 58.9 413
2001-06-02 15:56:50 C 14 49 50.78 -55 50 07.0 413
2001-06-02 16:01:18 C 14 49 49.93 -55 50 24.4 413
2001-06-02 16:03:06 C 14 49 49.59 -55 50 31.2 413
2001-06-03 11:42:52 C 14 46 29.48 -57 07 21.5 413
2001-06-03 11:44:31 C 14 46 29.18 -57 07 27.5 413
2001-06-03 11:46:09 C 14 46 28.88 -57 07 34.2 413
2001-07-03 10:51:07 C 13 15 10.33 -77 59 27.3 e 413
2001-07-03 10:54:27 C 13 15 10.02 -77 59 29.8 e 413
2001-07-03 10:57:45 C 13 15 10.10 -77 59 32.2 e 413
2001-07-04 09:59:19 C 13 15 32.49 -78 16 06.3 e 413
2001-07-04 10:02:17 C 13 15 32.31 -78 16 08.1 e 413
2001-07-04 10:05:15 C 13 15 32.32 -78 16 10.8 e 413
2001-09-11 12:51:50 C 20 28 03.96 -65 51 09.9 c 474
2001-09-11 12:55:40 C 20 28 04.38 -65 51 04.4 c 474
2001-09-11 12:59:49 C 20 28 04.82 -65 50 59.4 c 474
2001-09-11 13:03:14 C 20 28 05.20 -65 50 53.5 c 474
2003-10-29 09:26:06 C 00 28 41.770 -24 08 35.58 o 568
2003-10-29 09:30:55 C 00 28 41.533 -24 08 31.14 o 568