19573+0513 A 604 (HD 188914)

 
 
19h 57m 19.48s +05 12' 45.1" P.A. 350.00 sep 0.1 mag 9.06,9.85 Sp F8 dist. 190.48 pc (621.35 l.y.)
 
 
Coord 2000 19573+0513 Discov num A   604 Comp Coord arcsec 2000 19 57 19.48 +05 12 45.1
Date first 1903 Date last 2017 Obs 62
Pa first 263 Pa last 349.7 P.A. Now (θ) 334.1°
Sep first 0.2 Sep last 0.103 Sep. Now (ρ) 0.126"
Mag pri 9.06 Mag sec 9.85 delta mag (ΔM) 0.79 Spectral class F8 (yellow-white)
Pri motion ra -003 Sec motion ra
Pri motion dec -009 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 188914 Constellation Aquila SAO 125274 HIP 98203
Tycho2 0489-02302-1 Gaia DR2 4248515717172419072 HD 188914 ADS 13156
BD BD+04 4286 Distance 190.48 Distance ly 621.35
 
 
ORBITAL ELEMENTS
 
 
Period (P)228.15y± 17.63 Periastron (T)1935.43y± 5.63 Semi-major axis (a)0.291a± 0.016
Eccentricity (e)0.268± 0.019 Inclination (i)108°± 1.2 Longitude of periastron (ω)306°± 12.2
Node (Ω)94.7°± 1.9 Notesn ReferenceTok2015c
Equinox2000 Last observation2014 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 45.7 0.128
2001 43.2 0.125
2002 40.6 0.122
2003 37.9 0.119
2004 35.0 0.117
2005 32.1 0.114
2006 29.0 0.112
2007 25.8 0.111
2008 22.5 0.109
2009 19.1 0.108
2010 15.6 0.107
2011 12.2 0.107
2012 8.6 0.106
2013 5.1 0.107
2014 1.6 0.107
2015 358.2 0.108
2016 354.8 0.109
2017 351.5 0.111
2018 348.3 0.113
2019 345.2 0.115
2020 342.3 0.117
2021 339.4 0.120
2022 336.7 0.123
2023 334.1 0.126
2024 331.7 0.129
2025 329.4 0.132
2026 327.2 0.136
2027 325.1 0.140
2028 323.1 0.144
2029 321.2 0.148
2030 319.4 0.152


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



 
 


wds19573%2B0513b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic