15465+5048 COU2388

 
 
15h 46m 28.21s +50 47' 59.8" P.A. 191.50 sep 0.3 mag 9.61,9.72 Sp K0 dist. 60.42 pc (197.09 l.y.)
 
 
Coord 2000
15465+5048
Discov num
COU2388
Comp
Coord arcsec 2000
15 46 28.21 +50 47 59.8
Date first
1986
Date last
2012
Obs
11
Pa first
16
Pa last
219
P.A. Now (θ)
191.5°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.27"
Mag pri
9.61
Mag sec
9.72
delta mag (ΔM)
0.11
Spectral class
K0 (yellow-orange)
Pri motion ra
+006
Sec motion ra
Pri motion dec
+022
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
219.1
Precise sep
0.169
Constellation
Bootes
SAO
29653
HIP
77263
Tycho2
3496-01501-1
HD
141373
BD
BD+51 2030
Distance
60.42
Distance ly
197.09
last precise pa
219.1
last precise sep
0.169
 
 
ORBITAL ELEMENTS
 
 
Period (P)32.82y± 0.47 Periastron (T)2003.94y± 0.14 Semi-major axis (a)0.2163a± 0.0014
Eccentricity (e)0.276± 0.014 Inclination (i)111.1°± 0.3 Longitude of periastron (ω)13.2°± 1.1
Node (Ω)17.9°± 0.3 Note Grade3(1=Definitive, 9=Indet.)
Equinox Last observation
label rho theta
2000 0.113 47.5
2001 0.135 35.9
2002 0.151 27.3
2003 0.158 19.9
2004 0.152 12.6
2005 0.135 4.1
2006 0.110 352.2
2007 0.083 332.5
2008 0.068 299.4
2009 0.077 263.1
2010 0.103 240.3
2011 0.135 227.6
2012 0.166 219.7
2013 0.194 214.2
2014 0.219 210.0
2015 0.239 206.7
2016 0.255 203.7
2017 0.266 201.1
2018 0.272 198.7
2019 0.274 196.3
2020 0.272 193.9
2021 0.265 191.5
2022 0.254 188.8
2023 0.239 185.9
2024 0.220 182.5
2025 0.198 178.5
2026 0.173 173.3
2027 0.146 166.3
2028 0.119 156.1
2029 0.094 140.2
2030 0.078 115.6


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



 
 


wds15465%2B5048a.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
15465+5048 COU2388 1991 3 1 0.2 9.61 9.72 K0 154628.21+504759.8
15465+5048 COU2388 2008 5 281 0.1 9.61 9.72 K0 D 154628.21+504759.8
15465+5048 COU2388 2010 6 233 0.1 9.61 9.72 K0 D 154628.21+504759.8
15465+5048 COU2388 2012 11 219 0.2 9.61 9.72 K0 154628.21+504759.8

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