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
2020-03-23 07:14:19 S 16 10 53.189 +54 40 32.84 – V C57
2020-03-23 07:14:19 s 1 +64621.777 0 +354165.85 2230.0 – C57
2020-03-23 11:44:19 S 16 10 45.838 +54 38 53.56 – V C57
2020-03-23 11:44:19 s 1 +54746.700 0 +361539.52 5410.0 – C57
2020-03-23 12:14:19 S 16 10 44.693 +54 38 42.86 – V C57
2020-03-23 12:14:19 s 1 +53641.578 0 +362310.41 3910.0 – C57
2020-03-23 12:44:19 S 16 10 43.620 +54 38 29.29 – V C57
2020-03-23 12:44:19 s 1 +52535.011 0 +363071.71 8870.0 – C57
2020-03-23 13:14:19 S 16 10 42.662 +54 38 18.89 – V C57
2020-03-23 13:14:19 s 1 +51427.036 0 +363823.46 320.0 – C57
2020-03-23 13:44:19 S 16 10 41.594 +54 38 09.35 – V C57
2020-03-23 13:44:19 s 1 +50317.687 0 +364565.67 8310.0 – C57
2020-03-23 14:14:19 S 16 10 40.493 +54 37 58.87 – V C57
2020-03-23 14:14:19 s 1 +49206.999 0 +365298.37 2880.0 – C57
2020-03-23 14:44:19 S 16 10 40.315 +54 37 50.16 – V C57
2020-03-23 14:44:19 s 1 +48095.007 0 +366021.59 4060.0 – C57
2020-03-23 15:14:19 S 16 10 39.194 +54 37 38.17 – V C57
2020-03-23 15:14:19 s 1 +46981.745 0 +366735.34 1890.0 – C57
2020-03-23 20:14:19 S 16 10 29.369 +54 35 44.56 – V C57
2020-03-23 20:14:19 s 1 +35786.565 0 +373357.73 4750.0 – C57
2020-03-23 22:14:19 S 16 10 26.160 +54 35 03.48 – V C57
2020-03-23 22:14:19 s 1 +31281.126 0 +375747.54 1720.0 – C57
2020-03-24 04:14:19 S 16 10 14.414 +54 32 50.39 – V C57
2020-03-24 04:14:19 s 1 +17696.183 0 +382045.63 2990.0 – C57
2020-03-24 04:44:19 S 16 10 12.984 +54 32 41.89 – V C57
2020-03-24 04:44:19 s 1 +16560.516 0 +382512.18 4220.0 – C57
2020-03-24 05:14:19 S 16 10 11.813 +54 32 31.27 – V C57
2020-03-24 05:14:19 s 1 +15424.428 0 +382969.84 3080.0 – C57
2020-03-24 05:44:19 S 16 10 10.850 +54 32 20.11 – V C57
2020-03-24 05:44:19 s 1 +14287.945 0 +383418.63 9600.0 – C57
2020-03-24 06:14:19 S 16 10 10.003 +54 32 11.08 – V C57
2020-03-24 06:14:19 s 1 +13151.094 0 +383858.57 3810.0 – C57
2020-03-24 06:44:19 S 16 10 08.974 +54 31 58.01 – V C57
2020-03-24 06:44:19 s 1 +12013.903 0 +384289.68 5750.0 – C57
2020-03-24 08:44:19 S 16 10 04.610 +54 31 13.51 – V C57
2020-03-24 09:14:19 S 16 10 03.852 +54 31 04.66 – V C57
2020-03-24 10:14:19 S 16 10 01.807 +54 30 43.34 – V C57
2020-03-24 11:44:19 S 16 09 58.147 +54 30 08.93 – V C57
2020-03-24 12:14:19 S 16 09 57.115 +54 30 01.08 – V C57
2020-03-24 12:44:19 S 16 09 55.951 +54 29 51.47 – V C57
2020-03-24 13:14:19 S 16 09 54.818 +54 29 36.78 – V C57
2020-03-24 13:44:19 S 16 09 53.863 +54 29 26.66 – V C57
2020-03-24 14:14:19 S 16 09 53.177 +54 29 19.90 – V C57
2020-03-24 14:18:34 C 16 08 47.03 +54 43 57.9 – V T05
2020-03-24 14:23:39 C 16 08 46.82 +54 43 55.6 – V T05
2020-03-24 14:31:33 C 16 08 46.23 +54 43 53.1 – V T05
2020-03-24 14:44:19 S 16 09 51.576 +54 29 01.82 – V C57
2020-03-24 14:47:14 C 16 08 45.27 +54 43 46.3 – V T05
2020-03-24 15:44:19 S 16 09 49.471 +54 28 44.29 – V C57
2020-03-24 20:14:19 S 16 09 38.998 +54 27 04.75 – V C57