20151+3742 COU 2416 (HD 192744)

 
 
20h 15m 04.77s +37 41' 45.1" P.A. 128.00 sep 0.3 mag 8.00,8.50 Sp F0V
 
 
Coord 2000 20151+3742 Discov num COU2416 Comp Coord arcsec 2000 20 15 04.77 +37 41 45.1
Date first 1986 Date last 2014 Obs 20
Pa first 232 Pa last 128.2 P.A. Now (θ) 128.2°
Sep first 0.2 Sep last 0.342 Sep. Now (ρ) 0.342"
Mag pri 8.00 Mag sec 8.50 delta mag (ΔM) 0.5 Spectral class F0V (yellow-white)
Pri motion ra +034 Sec motion ra
Pri motion dec +024 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 192744 Constellation Cygnus SAO 69696 Tycho2 3151-01432-1
Gaia DR2 2060847324369028224 HD 192744
 
 
ORBITAL ELEMENTS
 
 
Period (P)56.88y Periastron (T)1995.77y Semi-major axis (a)0.223a
Eccentricity (e)0.477 Inclination (i)37.8° Longitude of periastron (ω)248.7°
Node (Ω)95.7° Notesn ReferenceDoc2013g
Equinox2000 Last observation2009 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 62.7 0.138
2001 72.8 0.156
2002 80.9 0.173
2003 87.6 0.188
2004 93.3 0.202
2005 98.3 0.215
2006 102.8 0.226
2007 106.9 0.235
2008 110.7 0.244
2009 114.3 0.251
2010 117.7 0.257
2011 120.9 0.262
2012 124.1 0.267
2013 127.1 0.270
2014 130.1 0.273
2015 133.0 0.275
2016 135.8 0.276
2017 138.7 0.277
2018 141.5 0.278
2019 144.4 0.278
2020 147.2 0.277
2021 150.1 0.276
2022 152.9 0.275
2023 155.9 0.273
2024 158.8 0.271
2025 161.8 0.269
2026 164.9 0.266
2027 168.0 0.263
2028 171.2 0.260
2029 174.5 0.257
2030 177.8 0.253


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



 
 


wds20151%2B3742c.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic