15347+2655 COU 798

 
 
15h 34m 40.64s +26° 54' 42.8" P.A. 211.00 sep 0.2 mag 9.50,9.80 Sp G0+G2
 
 
Coord 2000 15347+2655 Discov num COU 798 Comp Coord arcsec 2000 15 34 40.64 +26 54 42.8
Date first 1972 Date last 2014 Obs 41
Pa first 31 Pa last 211.3 P.A. Now (θ) 211.3°
Sep first 0.2 Sep last 0.238 Sep. Now (ρ) 0.238"
Mag pri 9.50 Mag sec 9.80 delta mag (ΔM) 0.3 Spectral class G0+G2 (yellow/yellow)
Pri motion ra -047 Sec motion ra
Pri motion dec +036 Sec motion dec
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Corona Borealis Tycho2 2029-00232-1 Gaia DR2 1222703457470672128
 
 
ORBITAL ELEMENTS
 
 
Period (P)154.7y± 1.5 Periastron (T)1983.37y± 0.05 Semi-major axis (a)0.259a± 0.004
Eccentricity (e)0.357± 0.007 Inclination (i)66.7°± 2.5 Longitude of periastron (ω)24.7°± 10
Node (Ω)46.1°± 4 Notesn ReferenceDoc2010h
Equinox2000 Last observation2007 Grade4(1=Definitive, 9=Indet.)
label theta rho
2000 159.2 0.088
2001 166.2 0.094
2002 172.3 0.101
2003 177.5 0.109
2004 182.1 0.117
2005 186.0 0.126
2006 189.4 0.135
2007 192.3 0.144
2008 195.0 0.153
2009 197.3 0.162
2010 199.4 0.171
2011 201.3 0.179
2012 203.0 0.188
2013 204.6 0.196
2014 206.0 0.205
2015 207.3 0.213
2016 208.6 0.220
2017 209.7 0.228
2018 210.8 0.235
2019 211.8 0.242
2020 212.7 0.249
2021 213.6 0.256
2022 214.5 0.262
2023 215.3 0.268
2024 216.1 0.274
2025 216.9 0.280
2026 217.6 0.285
2027 218.3 0.290
2028 218.9 0.295
2029 219.6 0.300
2030 220.2 0.304


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



 
 


wds15347%2B2655b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic