19579+4216 STT 392 AB

 
 
19h 57m 56.12s +42 15' 38.9" P.A. 184.00 sep 0.1 mag 6.60,8.40 Sp A3V dist. 325.73 pc (1062.53 l.y.)
 
 
Coord 2000 19579+4216 Discov num STT 392 Comp AB Coord arcsec 2000 19 57 56.12 +42 15 38.9
Date first 1843 Date last 1996 Obs 40
Pa first 324 Pa last 183.6 P.A. Now (θ) 135.2°
Sep first 0.2 Sep last 0.113 Sep. Now (ρ) 0.123"
Mag pri 6.60 Mag sec 8.40 delta mag (ΔM) 1.8 Spectral class A3V (white)
Pri motion ra -009 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
19579+4216 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 49031 19 57 56 +42 15 39 STT 392 AB 1996 40 184 0.1 6.60 8.40 1.80 Y <===
Show HD 189377 49031 19 57 56 +42 15 39 STF 2607 AB,C 2012 63 289 3.0 6.56 9.09 2.53
Triple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Cygnus SAO 49031 HIP 98253 Tycho2 3145-01210-1
Gaia DR2 2075470794651771776 HD 189377 HR 7638 GC 27665
ADS 13186 BD BD+41 3549 Distance 325.73 Distance ly 1062.53
 
 
ORBITAL ELEMENTS
 
 
Period (P)270.3y Periastron (T)2027y Semi-major axis (a)0.26a
Eccentricity (e)0.523 Inclination (i)112.7° Longitude of periastron (ω)34.1°
Node (Ω)140.9° Notesn ReferenceZir2010b
Equinox2000 Last observation1997 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 175.3 0.117
2001 173.2 0.119
2002 171.1 0.121
2003 169.2 0.123
2004 167.2 0.125
2005 165.4 0.127
2006 163.6 0.129
2007 161.8 0.130
2008 160.1 0.132
2009 158.4 0.133
2010 156.8 0.135
2011 155.1 0.136
2012 153.5 0.136
2013 151.9 0.137
2014 150.4 0.137
2015 148.8 0.137
2016 147.2 0.137
2017 145.6 0.136
2018 144.0 0.135
2019 142.4 0.133
2020 140.7 0.132
2021 138.9 0.129
2022 137.1 0.126
2023 135.2 0.123
2024 133.2 0.120
2025 131.1 0.115
2026 128.8 0.111
2027 126.3 0.106
2028 123.5 0.101
2029 120.4 0.096
2030 117.0 0.090


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



 
 


wds19579%2B4216a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic