19559+2500 COU 1037 (HD 339227)

 
 
19h 55m 53.36s +25 00' 09.4" P.A. 153.00 sep 0.2 mag 9.80,10.70 Sp G0+G5
 
 
Coord 2000 19559+2500 Discov num COU1037 Comp Coord arcsec 2000 19 55 53.36 +25 00 09.4
Date first 1973 Date last 2014 Obs 9
Pa first 155 Pa last 153.2 P.A. Now (θ) 153.2°
Sep first 0.2 Sep last 0.217 Sep. Now (ρ) 0.217"
Mag pri 9.80 Mag sec 10.70 delta mag (ΔM) 0.9 Spectral class G0+G5 (yellow/yellow)
Pri motion ra +026 Sec motion ra
Pri motion dec +019 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 339227 Constellation Vulpecula SAO 87944 Tycho2 2144-00996-1
Gaia DR2 1834493717414000384 HD 339227
 
 
ORBITAL ELEMENTS
 
 
Period (P)39y± 0.4 Periastron (T)2001.45y± 0.1 Semi-major axis (a)0.157a± 0.01
Eccentricity (e)0.292± 0.012 Inclination (i)99°± 3.5 Longitude of periastron (ω)245.8°± 8
Node (Ω)155.7°± 4 Notesn ReferenceDoc2010h
Equinox2000 Last observation2007 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 328.1 0.087
2001 321.7 0.061
2002 304.6 0.033
2003 229.2 0.019
2004 180.3 0.042
2005 168.9 0.071
2006 164.0 0.097
2007 161.1 0.119
2008 159.0 0.138
2009 157.4 0.151
2010 156.0 0.161
2011 154.8 0.167
2012 153.6 0.170
2013 152.4 0.170
2014 151.2 0.166
2015 149.9 0.160
2016 148.5 0.152
2017 147.0 0.142
2018 145.1 0.131
2019 142.9 0.117
2020 140.1 0.103
2021 136.3 0.087
2022 130.8 0.071
2023 122.2 0.056
2024 107.2 0.041
2025 80.4 0.032
2026 45.3 0.032
2027 19.6 0.042
2028 5.2 0.057
2029 356.9 0.072
2030 351.5 0.087


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



 
 


wds19559%2B2500b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic