09290+1917 COU 936

 
 
09h 29m 00.67s +19 17' 18.6" P.A. 224.40 sep 1.0 mag 8.42,9.96 Sp F5 dist. 83.13 pc (271.17 l.y.)
 
 
Coord 2000
09290+1917
Discov num
COU 936
Comp
Coord arcsec 2000
09 29 00.67 +19 17 18.6
Date first
1973
Date last
2017
Obs
19
Pa first
239
Pa last
226
P.A. Now (θ)
224.4°
Sep first
0.5
Sep last
1.0
Sep. Now (ρ)
0.96"
Mag pri
8.42
Mag sec
9.96
delta mag (ΔM)
1.54
Spectral class
F5 (yellow-white)
Pri motion ra
+026
Sec motion ra
+026
Pri motion dec
+033
Sec motion dec
+033
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
225.8
Precise sep
0.956
Constellation
Leo
SAO
98596
HIP
46501
Tycho2
1406-01207-1
Gaia DR2
634098255638793600
HD
81899
BD
BD+19 2218
Distance
83.13
Distance ly
271.17
last precise pa
225.8
last precise sep
0.956
 
 
ORBITAL ELEMENTS
 
 
Period (P)180.5y± 16.3 Periastron (T)1945.3y± 2.4 Semi-major axis (a)0.565a± 0.032
Eccentricity (e)0.738± 0.065 Inclination (i)108.6°± 5 Longitude of periastron (ω)8.4°± 7.7
Node (Ω)45°± 1.9 Note Grade5(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.864 227.8
2001 0.871 227.6
2002 0.878 227.4
2003 0.885 227.3
2004 0.891 227.1
2005 0.898 226.9
2006 0.904 226.8
2007 0.909 226.6
2008 0.915 226.4
2009 0.920 226.3
2010 0.925 226.1
2011 0.930 225.9
2012 0.934 225.8
2013 0.938 225.6
2014 0.942 225.5
2015 0.946 225.3
2016 0.950 225.2
2017 0.953 225.0
2018 0.956 224.9
2019 0.959 224.7
2020 0.961 224.6
2021 0.964 224.4
2022 0.966 224.3
2023 0.968 224.1
2024 0.969 224.0
2025 0.971 223.8
2026 0.972 223.7
2027 0.973 223.5
2028 0.974 223.4
2029 0.974 223.2
2030 0.975 223.1


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



 
 


wds09290%2B1917a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic
 
 
 
WDS HISTORIC DATA
 
 
coord_2000 discov_num comp epoch obs pa sep mag_pri mag_sec spectr notes coord_arcsec_2000
09290+1917 COU 936 2004 10 227 0.9 8.42 9.96 F5 D 092900.67+191718.6
09290+1917 COU 936 2010 12 226 0.9 8.42 9.96 F5 D 092900.67+191718.6
09290+1917 COU 936 2012 13 226 1.0 8.42 9.96 F5 092900.67+191718.6
09290+1917 COU 936 2017 14 226 1.0 8.42 9.96 F5 092900.67+191718.6

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