19594+3206 A 378 (HD 189549)

 
 
19h 59m 22.02s +32 06' 28.0" P.A. 294.00 sep 1.0 mag 8.48,8.98 Sp G5
 
 
Coord 2000 19594+3206 Discov num A   378 Comp Coord arcsec 2000 19 59 22.02 +32 06 28.0
Date first 1902 Date last 2016 Obs 44
Pa first 319 Pa last 293.6 P.A. Now (θ) 293.6°
Sep first 0.4 Sep last 0.974 Sep. Now (ρ) 0.974"
Mag pri 8.48 Mag sec 8.98 delta mag (ΔM) 0.5 Spectral class G5 (yellow)
Pri motion ra +002 Sec motion ra +002
Pri motion dec -013 Sec motion dec -013
Notes O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 189549 Constellation Cygnus SAO 69212 Tycho2 2674-01000-1
Gaia DR2 2033994123703611136 HD 189549 ADS 13212
 
 
ORBITAL ELEMENTS
 
 
Period (P)591.302y± 325.9371 Periastron (T)2060.8237y± 166.8133 Semi-major axis (a)1.57387a± 0.84266
Eccentricity (e)0.70961± 0.26477 Inclination (i)95.414°± 9.554 Longitude of periastron (ω)256.252°± 32.532
Node (Ω)108.095°± 7.724 Notes ReferenceIzm2019
Equinox Last observation2013 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 294.2 0.874
2001 294.1 0.875
2002 293.9 0.876
2003 293.8 0.877
2004 293.7 0.878
2005 293.6 0.878
2006 293.4 0.878
2007 293.3 0.878
2008 293.2 0.878
2009 293.0 0.878
2010 292.9 0.877
2011 292.8 0.876
2012 292.6 0.875
2013 292.5 0.874
2014 292.4 0.872
2015 292.2 0.870
2016 292.1 0.868
2017 292.0 0.866
2018 291.8 0.863
2019 291.7 0.860
2020 291.6 0.856
2021 291.4 0.853
2022 291.3 0.848
2023 291.2 0.844
2024 291.0 0.839
2025 290.9 0.834
2026 290.7 0.828
2027 290.6 0.821
2028 290.4 0.815
2029 290.3 0.807
2030 290.1 0.800


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



 
 


wds19594%2B3206a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic