19035-6845 FIN 357 (HD 175986)

 
 
19h 03m 29.68s -68° 45' 19.9" P.A. 149.00 sep 0.2 mag 6.58,6.96 Sp F8V dist. 56.31 pc (183.68 l.y.)
 
 
Coord 2000 19035-6845 Discov num FIN 357 Comp Coord arcsec 2000 19 03 29.68 -68 45 19.9
Date first 1959 Date last 2021 Obs 20
Pa first 16 Pa last 149.2 P.A. Now (θ) 116.6°
Sep first 0.1 Sep last 0.163 Sep. Now (ρ) 0.182"
Mag pri 6.58 Mag sec 6.96 delta mag (ΔM) 0.38 Spectral class F8V (yellow-white)
Pri motion ra -019 Sec motion ra
Pri motion dec -012 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 175986 Constellation Pavo SAO 254446 HIP 93574
Tycho2 9292-02325-1 Gaia DR2 6421518377211390208 HD 175986 HR 7161
GC 26117 CP CP-68 3180 Distance 56.31 Distance ly 183.68
 
 
ORBITAL ELEMENTS
 
 
Period (P)14.05y± 0.06 Periastron (T)2018.226y± 0.04 Semi-major axis (a)0.142a± 0.001
Eccentricity (e)0.385± 0.003 Inclination (i)163.5°± 0.5 Longitude of periastron (ω)193.9°± 1.5
Node (Ω)101.9°± 1.5 Notesn ReferenceDoc2018l
Equinox2000 Last observation2018 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 51.0 0.169
2001 32.8 0.149
2002 8.2 0.125
2003 331.8 0.101
2004 279.1 0.088
2005 220.8 0.093
2006 177.8 0.116
2007 150.2 0.143
2008 131.0 0.166
2009 115.9 0.182
2010 103.0 0.193
2011 90.9 0.196
2012 79.0 0.194
2013 66.2 0.185
2014 51.8 0.170
2015 33.9 0.150
2016 9.7 0.126
2017 334.0 0.102
2018 282.0 0.088
2019 223.5 0.092
2020 179.5 0.115
2021 151.3 0.141
2022 131.8 0.165
2023 116.6 0.182
2024 103.6 0.192
2025 91.5 0.196
2026 79.6 0.194
2027 66.9 0.185
2028 52.5 0.171
2029 34.9 0.151
2030 11.1 0.127


 
grafico orbita
Note: Theta is PA, Rho is Sep. For yearly orbits, data refer to Jan 1st.



 
 


wds19035-6845e.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic