03423+3141 COU 691

 
 
03h 42m 15.91s +31 40' 34.5" P.A. 312.6 sep 0.06 mag 9.00,9.00 Sp F8
 
 
Coord 2000
03423+3141
Discov num
COU 691
Comp
Coord arcsec 2000
03 42 15.91 +31 40 34.5
Date first
1972
Date last
2007
Obs
26
Pa first
48
Pa last
244
P.A. Now (θ)
312.6°
Sep first
0.1
Sep last
0.2
Sep. Now (ρ)
0.06"
Mag pri
9.00
Mag sec
9.00
delta mag (ΔM)
0
Spectral class
F8 (yellow-white)
Pri motion ra
+024
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
 
 
Precise pa
244.2
Precise sep
0.216
Cdsa2 id
COU 691
Constellation
Perseus
SAO
56645
Tycho2
2355-00291-1
Ra deg
3.7044194444444445
De deg
31.67625
last precise pa
244.2
last precise sep
0.216
 
 
ORBITAL ELEMENTS
 
 
Period (P)55.88y Periastron (T)1961.93y Semi-major axis (a)0.155a
Eccentricity (e)0.141 Inclination (i)66.2° Longitude of periastron (ω)258.2°
Node (Ω)66.5° Note Grade3(1=Definitive, 9=Indet.)
Equinox2000 Last observation2007
label rho theta
2000 0.119 220.8
2001 0.126 224.9
2002 0.133 228.6
2003 0.139 231.9
2004 0.144 235.0
2005 0.147 237.9
2006 0.149 240.7
2007 0.149 243.5
2008 0.148 246.3
2009 0.145 249.2
2010 0.140 252.3
2011 0.133 255.6
2012 0.124 259.3
2013 0.114 263.7
2014 0.103 269.0
2015 0.090 275.6
2016 0.078 284.4
2017 0.067 296.4
2018 0.058 312.6
2019 0.054 332.7
2020 0.056 353.5
2021 0.064 11.0
2022 0.075 24.1
2023 0.087 33.6
2024 0.100 40.8
2025 0.112 46.3
2026 0.123 50.8
2027 0.133 54.6
2028 0.141 57.9
2029 0.148 60.9
2030 0.153 63.6

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

grafico orbita





wds03423%2B3141d.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
03423+3141 COU 691 1999 24 33 0.1 9.00 9.00 F8 NO 034215.90+314049.5
03423+3141 COU 691 2007 25 66 0.1 9.00 9.00 F8 NO 034215.90+314049.5

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