IAA RAS IAA Minor Planet Database

539940 (2017 HW1)

NEO ⇩ IMP ⇩ COV ★ EPH ⇩ OBS
Orbital Elements
Epoch (TDB)2025-11-21 (JD 2461000.5)
Eccentricity (e)0.4585305393 ± 1.85e-08
Semi-major axis (a)2.1379494101 AU ± 2.27e-08
Inclination (i)33.93429844° ± 5.61e-06
Long. of Asc. Node (Ω)41.31082257° ± 2.15e-06
Arg. of Perihelion (ω)168.80631156° ± 8.78e-06
Mean Anomaly (M)282.85413711° ± 1.06e-05
Mean Motion (n)0.3152943146°/day ± 5.02e-09
Perihelion dist (q)1.15763431 AU ± 4.14e-08
Aphelion dist (Q)3.11826451 AU ± 5.16e-08
Orbital Period3.12605156 yr ± 4.97e-08
Physical Parameters
H (abs. magnitude)18.00
G (slope)0.15
Orbit Solution
SourceIAA
Solution Date2026-06-02
RMS Residual0.518″
Uncertainty0
Orbit TypeAmor
MOID0.155744 AU
Observations Used1400
Oppositions9
Arc Total2012-2025
First Observation Used2012-10-22
Last Observation Used2025-12-13
Observations (2295)
Date Type RA Dec Mag Band Observatory
2020-04-28 02:30:21 C 13 48 46.98 +18 24 24.6 – q W46
2020-04-28 04:00:53 C 13 48 24.09 +18 12 57.4 – V U71
2020-04-28 04:06:18 C 13 48 22.65 +18 12 16.0 – V U71
2020-04-28 04:11:02 C 13 48 21.36 +18 11 41.1 – V U71
2020-04-28 09:56:30 C 13 46 49.01 +17 27 53.9 – V T05
2020-04-28 10:02:49 C 13 46 47.27 +17 27 04.6 – V T05
2020-04-28 10:04:49 C 13 46 46.72 +17 26 50.0 – V T05
2020-04-28 10:11:11 C 13 46 44.96 +17 26 00.9 – V T05
2020-04-28 11:02:04 C 13 46 31.00 +17 19 28.7 – V T05
2020-04-28 18:16:12 C 13 44 39.88 +16 23 16.7 – q C97
2020-04-28 18:17:23 C 13 44 39.42 +16 23 07.6 – q C97
2020-04-28 18:18:34 C 13 44 39.21 +16 22 58.6 – q C97
2020-04-28 18:19:45 C 13 44 38.88 +16 22 50.6 – q C97
2020-04-28 18:20:56 C 13 44 38.56 +16 22 40.9 – q C97
2020-04-28 18:22:07 C 13 44 38.26 +16 22 32.8 – q C97
2020-04-28 18:23:17 C 13 44 37.96 +16 22 23.4 – q C97
2020-04-28 18:24:28 C 13 44 37.61 +16 22 14.5 – q C97
2020-04-28 18:25:39 C 13 44 37.35 +16 22 06.5 – q C97
2020-04-28 18:26:51 C 13 44 36.94 +16 21 55.2 – q C97
2020-04-28 18:28:03 C 13 44 36.64 +16 21 46.0 – q C97
2020-04-28 18:29:13 C 13 44 36.31 +16 21 36.7 – q C97
2020-04-28 18:30:24 C 13 44 35.99 +16 21 28.1 – q C97
2020-04-28 18:31:35 C 13 44 35.68 +16 21 18.7 – q C97
2020-04-28 18:32:47 C 13 44 35.31 +16 21 08.5 – q C97
2020-04-28 19:45:52 C 13 44 16.95 +16 11 21.8 – V L54
2020-04-28 20:04:53 C 13 44 11.82 +16 08 53.8 – V L54
2020-04-28 20:25:05 C 13 44 06.34 +16 06 15.2 – V L54
2020-04-28 22:05:14 C 13 43 39.27 +15 53 12.2 – V L54
2020-04-28 22:23:40 C 13 43 34.13 +15 50 45.9 – V L18
2020-04-28 22:24:08 C 13 43 34.04 +15 50 40.4 – V L18
2020-04-28 22:25:03 C 13 43 33.85 +15 50 34.4 – V L18
2020-04-28 22:25:30 C 13 43 33.71 +15 50 29.9 – V L18
2020-04-28 22:25:58 C 13 43 33.55 +15 50 27.5 – V L18
2020-04-28 22:26:25 C 13 43 33.37 +15 50 22.8 – V L18
2020-04-28 22:29:11 C 13 43 32.64 +15 50 01.1 – V L18
2020-04-28 22:29:38 C 13 43 32.55 +15 49 57.5 – V L18
2020-04-28 22:30:05 C 13 43 32.45 +15 49 53.7 – V L18
2020-04-28 22:31:00 C 13 43 32.19 +15 49 47.0 – V L18
2020-04-28 22:31:56 C 13 43 31.97 +15 49 40.2 – V L18
2020-04-28 22:33:27 C 13 43 31.49 +15 49 27.3 – V L18
2020-04-28 22:34:22 C 13 43 31.25 +15 49 20.9 – V L18
2020-04-28 22:35:17 C 13 43 31.03 +15 49 13.5 – V L18
2020-04-28 22:36:12 C 13 43 30.82 +15 49 06.9 – V L18
2020-04-28 22:37:35 C 13 43 30.41 +15 48 55.0 – V L18
2020-04-28 22:38:03 C 13 43 30.33 +15 48 50.6 – V L18
2020-04-28 22:38:30 C 13 43 30.21 +15 48 47.6 – V L18
2020-04-28 22:38:58 C 13 43 30.01 +15 48 44.3 – V L18
2020-04-28 22:39:40 C 13 43 29.97 +15 48 41.6 – V L54
2020-04-28 22:40:20 C 13 43 29.66 +15 48 33.0 – V L18
2020-04-28 22:40:48 C 13 43 29.54 +15 48 29.8 – V L18