17418+2130 COU 114 (HD 160935)
17h 41m 47.72s +21° 30' 06.4" P.A. 261.00 sep 0.1 mag 7.25,8.10 Sp F8IV dist. 89.85 pc (293.09 l.y.)
Coord 2000 |
17418+2130 |
|
Discov num |
COU 114 |
|
Comp |
|
|
Coord arcsec 2000 |
17 41 47.72 +21 30 06.4 |
|
Date first |
1966 |
|
Date last |
2012 |
|
Obs |
63 |
|
Pa first |
20 |
|
Pa last |
261.1 |
|
P.A. Now (θ) |
261.1° |
|
Sep first |
0.3 |
|
Sep last |
0.096 |
|
Sep. Now (ρ) |
0.096" |
|
Mag pri |
7.25 |
|
Mag sec |
8.10 |
|
delta mag (ΔM) |
0.85 |
|
Spectral class |
F8IV (yellow-white) |
|
Pri motion ra |
+024 |
|
Sec motion ra |
|
|
Pri motion dec |
-126 |
|
Sec motion dec |
|
|
Notes |
O
(Orbital solution) |
|
This double is physical.
OTHER CATALOGS AND DESIGNATIONS
Name |
HD 160935 |
|
Constellation |
Hercules |
|
SAO |
85324 |
|
HIP |
86596 |
|
Tycho2 |
1563-03552-1 |
|
Gaia DR2 |
4556052589795560960 |
|
HD |
160935 |
|
GC |
24005 |
|
BD |
BD+21 3188 |
|
Distance |
89.85 |
|
Distance ly |
293.09 |
|
ORBITAL ELEMENTS
Period (P) | 105y | |
Periastron (T) | 1943.83y | |
Semi-major axis (a) | 0.305a | |
Eccentricity (e) | 0.55 | |
Inclination (i) | 77.2° | |
Longitude of periastron (ω) | 66° | |
Node (Ω) | 16° | |
Notes | | |
Reference | Cou1999b | |
Equinox | | |
Last observation | | |
Grade | 4 | (1=Definitive, 9=Indet.) |
label |
theta |
rho |
2000 |
227.9 |
0.186 |
2001 |
229.6 |
0.178 |
2002 |
231.6 |
0.170 |
2003 |
233.7 |
0.163 |
2004 |
236.1 |
0.155 |
2005 |
238.6 |
0.147 |
2006 |
241.5 |
0.140 |
2007 |
244.7 |
0.133 |
2008 |
248.2 |
0.126 |
2009 |
252.1 |
0.119 |
2010 |
256.5 |
0.113 |
2011 |
261.3 |
0.108 |
2012 |
266.6 |
0.103 |
2013 |
272.4 |
0.100 |
2014 |
278.5 |
0.097 |
2015 |
284.9 |
0.095 |
2016 |
291.5 |
0.094 |
2017 |
298.2 |
0.095 |
2018 |
304.7 |
0.096 |
2019 |
310.9 |
0.099 |
2020 |
316.7 |
0.102 |
2021 |
322.1 |
0.107 |
2022 |
327.1 |
0.112 |
2023 |
331.6 |
0.117 |
2024 |
335.6 |
0.124 |
2025 |
339.3 |
0.130 |
2026 |
342.7 |
0.137 |
2027 |
345.7 |
0.143 |
2028 |
348.4 |
0.150 |
2029 |
350.9 |
0.157 |
2030 |
353.2 |
0.163 |
|
|
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.
|
|
|
|
|
|
|
|
Measures: green=micrometric, blue=interferometric, purple=photographic |
|