12409+2708 COU 596

 
 
12h 40m 55.44s +27 08' 20.9" P.A. 198.7 sep 0.16 mag 8.50,8.70 Sp F5V dist. 151.06 pc (492.76 l.y.)
 
 
Coord 2000
12409+2708
Discov num
COU 596
Comp
Coord arcsec 2000
12 40 55.44 +27 08 20.9
Date first
1971
Date last
2008
Obs
28
Pa first
209
Pa last
211
P.A. Now (θ)
198.7°
Sep first
0.2
Sep last
0.2
Sep. Now (ρ)
0.16"
Mag pri
8.50
Mag sec
8.70
delta mag (ΔM)
0.2
Spectral class
F5V (yellow-white)
Pri motion ra
-047
Sec motion ra
Pri motion dec
-014
Sec motion dec
Notes
N O (See Notes, Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
211
Precise sep
0.217
Constellation
Coma Berenices
SAO
82439
HIP
61890
Tycho2
1992-01456-1
HD
110297
BD
BD+27 2158
Distance
151.06
Distance ly
492.76
last precise pa
211
last precise sep
0.217
 
 
ORBITAL ELEMENTS
 
 
Period (P)38.13y Periastron (T)1988.88y Semi-major axis (a)0.118a
Eccentricity (e)0.976 Inclination (i)140.5° Longitude of periastron (ω)60.1°
Node (Ω)78° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.176 209.6
2001 0.181 208.9
2002 0.185 208.3
2003 0.188 207.6
2004 0.191 207.0
2005 0.193 206.4
2006 0.194 205.8
2007 0.195 205.2
2008 0.194 204.7
2009 0.194 204.1
2010 0.192 203.5
2011 0.190 202.9
2012 0.187 202.3
2013 0.184 201.6
2014 0.179 200.9
2015 0.174 200.2
2016 0.169 199.5
2017 0.162 198.7
2018 0.155 197.8
2019 0.146 196.8
2020 0.137 195.7
2021 0.126 194.4
2022 0.114 192.9
2023 0.100 191.0
2024 0.084 188.3
2025 0.065 184.4
2026 0.041 176.2
2027 0.003 57.0
2028 0.051 227.8
2029 0.074 222.4
2030 0.094 219.3

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

grafico orbita





wds12409%2B2708c.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
12409+2708 COU 596 2000 25 207 0.2 8.50 8.70 F5V O 124055.44+270820.9
12409+2708 COU 596 2007 26 206 0.2 8.50 8.70 F5V O 124055.44+270820.9
12409+2708 COU 596 2008 27 211 0.2 8.50 8.70 F5V O 124055.44+270820.9

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