12533+4246 COU1579

 
 
12h 53m 17.33s +42 46' 16.8" P.A. 150.9 sep 0.22 mag 9.40,9.70 Sp G9V
 
 
Coord 2000
12533+4246
Discov num
COU1579
Comp
Coord arcsec 2000
12 53 17.33 +42 46 16.8
Date first
1977
Date last
2008
Obs
21
Pa first
13
Pa last
121
P.A. Now (θ)
150.9°
Sep first
0.3
Sep last
0.2
Sep. Now (ρ)
0.22"
Mag pri
9.40
Mag sec
9.70
delta mag (ΔM)
0.3
Spectral class
G9V (yellow)
Pri motion ra
+010
Sec motion ra
Pri motion dec
-029
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Precise pa
120.6
Precise sep
0.207
Constellation
Canes Venatici
SAO
44374
Tycho2
3023-00675-1
last precise pa
120.6
last precise sep
0.207
 
 
ORBITAL ELEMENTS
 
 
Period (P)90.81y Periastron (T)2023.25y Semi-major axis (a)0.409a
Eccentricity (e)0.646 Inclination (i)72.2° Longitude of periastron (ω)66.3°
Node (Ω)158° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation2008
label rho theta
2000 0.174 82.4
2001 0.175 87.5
2002 0.176 92.5
2003 0.179 97.4
2004 0.182 102.2
2005 0.186 106.7
2006 0.191 111.1
2007 0.196 115.2
2008 0.201 119.2
2009 0.207 122.9
2010 0.213 126.4
2011 0.218 129.7
2012 0.222 132.9
2013 0.226 136.0
2014 0.229 139.0
2015 0.230 141.9
2016 0.230 144.8
2017 0.226 147.8
2018 0.219 150.9
2019 0.206 154.3
2020 0.188 158.3
2021 0.161 163.4
2022 0.125 171.0
2023 0.082 186.2
2024 0.047 229.6
2025 0.064 291.0
2026 0.109 313.6
2027 0.154 322.8
2028 0.195 327.9
2029 0.231 331.3
2030 0.263 333.9

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

grafico orbita





wds12533%2B4246b.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
12533+4246 COU1579 2000 17 81 0.2 9.40 9.70 G9V O 125317.33+424616.8
12533+4246 COU1579 2008 18 121 0.2 9.40 9.70 G9V O 125317.33+424616.8

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