19556+5226 YR 2 Aa,Ab

 
 
19h 55m 37.82s +52 26' 20.5" P.A. 45.00 sep 0.1 mag 5.60,6.10 Sp A4Vn dist. 86.28 pc (281.45 l.y.)
 
 
Coord 2000 19556+5226 Discov num YR    2 Comp Aa,Ab Coord arcsec 2000 19 55 37.82 +52 26 20.5
Date first 1996 Date last 2010 Obs 16
Pa first 106 Pa last 45 P.A. Now (θ) 45°
Sep first 0.1 Sep last 0.111 Sep. Now (ρ) 0.111"
Mag pri 5.60 Mag sec 6.10 delta mag (ΔM) 0.5 Spectral class A4Vn (white)
Pri motion ra -034 Sec motion ra
Pri motion dec -022 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19556+5226 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 32114 19 55 38 +52 26 20 YR 2 Aa,Ab 2010 16 45 0.1 5.60 6.10 0.50 Y <===
Show Psi Cyg 32114 19 55 38 +52 26 20 STF 2605 AB 2017 132 175 2.9 5.03 7.52 2.49
Show 32114 19 55 38 +52 26 20 STF 2605 AC 2003 5 53 23.9 5.03 13.80 8.77
Show 32114 19 55 38 +52 26 20 STF 2605 AD 2003 8 60 169.8 5.03 11.31 6.28
Quintuple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 32114 HIP 98055 Tycho2 3570-02426-1
Gaia DR2 2089092884718210432 HD 189037 HR 7619 GC 27618
ADS 13148 BD BD+52 2572 Bayer Psi Cygni Bayer name Psi Cyg
Flamsteed 24 Cygni Flamsteed name 24 Cyg Distance 86.28 Distance ly 281.45
Bayer greek ψ Cyg
 
 
ORBITAL ELEMENTS
 
 
Period (P)54.08y Periastron (T)2016.9y Semi-major axis (a)0.141a
Eccentricity (e)0.484 Inclination (i)113° Longitude of periastron (ω)259.9°
Node (Ω)216.7° Notesn ReferenceHrt2013c
Equinox2000 Last observation2010 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 85.7 0.092
2001 80.5 0.096
2002 75.8 0.099
2003 71.3 0.103
2004 67.2 0.107
2005 63.4 0.110
2006 59.7 0.112
2007 56.2 0.114
2008 52.7 0.115
2009 49.3 0.115
2010 45.8 0.113
2011 42.1 0.109
2012 38.1 0.102
2013 33.3 0.093
2014 27.2 0.080
2015 18.3 0.063
2016 2.1 0.044
2017 326.3 0.030
2018 275.1 0.033
2019 247.7 0.051
2020 235.0 0.070
2021 227.6 0.087
2022 222.5 0.101
2023 218.5 0.113
2024 215.2 0.122
2025 212.4 0.129
2026 209.7 0.134
2027 207.3 0.137
2028 204.9 0.139
2029 202.6 0.140
2030 200.2 0.139


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



 
 


wds19556%2B5226a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic