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
2020-04-23 22:28:50 C 14 14 42.88 +29 39 25.3 – V 196
2020-04-23 22:38:47 C 14 14 40.22 +29 38 30.0 – V 204
2020-04-23 22:44:00 C 14 14 38.87 +29 37 56.6 – V 196
2020-04-23 23:22:31 C 14 14 28.57 +29 34 13.2 – V 204
2020-04-24 00:06:14 C 14 14 16.93 +29 29 55.4 – V 204
2020-04-24 00:12:51 C 14 14 14.60 +29 29 15.6 – V L54
2020-04-24 00:15:22 C 14 14 14.41 +29 29 03.4 – V 160
2020-04-24 00:18:14 C 14 14 13.64 +29 28 46.6 – V 160
2020-04-24 00:21:07 C 14 14 12.87 +29 28 29.3 – V 160
2020-04-24 00:49:58 C 14 14 05.28 +29 25 36.4 – V 204
2020-04-24 01:27:56 C 14 13 54.71 +29 21 48.3 – V L54
2020-04-24 21:52:31 C 14 08 42.64 +27 17 09.0 – V Z80
2020-04-24 22:02:26 C 14 08 40.00 +27 16 06.7 – V Z80
2020-04-24 22:10:46 C 14 08 37.78 +27 15 14.1 – V Z80
2020-04-24 22:41:17 C 14 08 28.74 +27 12 07.4 – V L04
2020-04-24 22:43:30 C 14 08 28.15 +27 11 53.2 – V L04
2020-04-24 22:46:22 C 14 08 27.37 +27 11 35.2 – V L04
2020-04-25 15:30:22 C 14 04 08.464 +25 23 42.30 – V O85
2020-04-25 15:31:06 C 14 04 08.269 +25 23 37.68 – V O85
2020-04-25 16:21:08 C 14 03 54.645 +25 18 07.18 – V O85
2020-04-25 16:21:52 C 14 03 54.453 +25 18 02.39 – V O85
2020-04-25 16:26:08 C 14 03 53.286 +25 17 34.02 – V O85
2020-04-25 16:31:08 C 14 03 51.929 +25 17 00.97 – V O85
2020-04-25 18:40:05 C 14 03 19.66 +25 02 51.9 – q M43
2020-04-25 18:45:19 C 14 03 18.24 +25 02 17.1 – q M43
2020-04-25 18:50:31 C 14 03 16.81 +25 01 42.4 – q M43
2020-04-25 18:54:57 C 14 03 15.61 +25 01 13.2 – q M43
2020-04-25 21:20:48 C 14 02 37.28 +24 44 41.4 – V L54
2020-04-25 21:33:52 C 14 02 33.74 +24 43 13.6 – V L54
2020-04-25 21:43:23 C 14 02 31.18 +24 42 10.8 – V L54
2020-04-25 21:46:57 C 14 02 30.20 +24 41 45.9 – V L54
2020-04-25 21:48:08 C 14 02 29.85 +24 41 36.6 – V L54
2020-04-25 22:21:25 C 14 02 21.42 +24 37 55.6 – V 104
2020-04-25 23:17:20 C 14 02 06.24 +24 31 39.3 – V 104
2020-04-25 23:32:38 C 14 02 01.59 +24 29 53.0 – V L54
2020-04-25 23:47:50 C 14 01 57.52 +24 28 11.7 – V L54
2020-04-26 00:00:54 C 14 01 54.00 +24 26 42.6 – V L54
2020-04-26 00:13:59 C 14 01 50.43 +24 25 12.9 – V L54
2020-04-26 00:28:15 C 14 01 46.65 +24 23 37.3 – V L54
2020-04-26 00:35:00 C 14 01 45.24 +24 22 53.4 – V 104
2020-04-26 00:41:19 C 14 01 43.10 +24 22 07.0 – V L54
2020-04-26 00:54:24 C 14 01 39.59 +24 20 37.9 – V L54
2020-04-26 01:08:41 C 14 01 35.78 +24 19 01.2 – V L54
2020-04-26 07:49:02 C 13 59 52.72 +23 33 40.0 – V 703
2020-04-26 07:56:34 C 13 59 50.67 +23 32 47.8 – V 703
2020-04-26 08:04:07 C 13 59 48.61 +23 31 55.8 – V 703
2020-04-26 08:11:40 C 13 59 46.55 +23 31 03.5 – V 703
2020-04-26 08:58:46 C 13 59 36.06 +23 25 49.1 – V T08
2020-04-26 09:03:31 C 13 59 34.77 +23 25 16.4 – V T08
2020-04-26 09:13:58 C 13 59 31.89 +23 24 04.3 – V T08