12316+3201 COU 966

 
 
12h 31m 35.73s +32° 01' 22.5" P.A. 28.00 sep 0.3 mag 10.18,10.99 Sp F8 dist. 303.03 pc (988.48 l.y.)
 
 
Coord 2000 12316+3201 Discov num COU 966 Comp Coord arcsec 2000 12 31 35.73 +32 01 22.5
Date first 1973 Date last 2014 Obs 18
Pa first 101 Pa last 27.7 P.A. Now (θ) 27.7°
Sep first 0.2 Sep last 0.278 Sep. Now (ρ) 0.278"
Mag pri 10.18 Mag sec 10.99 delta mag (ΔM) 0.81 Spectral class F8 (yellow-white)
Pri motion ra +012 Sec motion ra
Pri motion dec -003 Sec motion dec
Notes N C (See Notes, Has orbit and linear solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation Canes Venatici HIP 61124 Tycho2 2528-01773-1 Gaia DR2 4012656213711769472
BD BD+32 2254 Distance 303.03 Distance ly 988.48
 
 
ORBITAL ELEMENTS
 
 
Period (P)90.43y Periastron (T)2036.13y Semi-major axis (a)0.126a
Eccentricity (e)0.304 Inclination (i)172.4° Longitude of periastron (ω)183°
Node (Ω)63.6° Notes ReferenceMnt1999c
Equinox Last observation1997 Grade5(1=Definitive, 9=Indet.)
label theta rho
2000 40.1 0.160
2001 37.8 0.159
2002 35.4 0.157
2003 33.0 0.156
2004 30.5 0.155
2005 28.0 0.153
2006 25.4 0.151
2007 22.8 0.150
2008 20.1 0.148
2009 17.3 0.146
2010 14.5 0.144
2011 11.5 0.142
2012 8.5 0.140
2013 5.4 0.137
2014 2.2 0.135
2015 358.9 0.132
2016 355.4 0.130
2017 351.8 0.127
2018 348.0 0.125
2019 344.1 0.122
2020 340.0 0.119
2021 335.7 0.116
2022 331.2 0.114
2023 326.5 0.111
2024 321.5 0.108
2025 316.3 0.106
2026 310.8 0.103
2027 305.0 0.100
2028 299.0 0.098
2029 292.6 0.096
2030 286.0 0.094


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



 
 


wds12316%2B3201a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic