00308+4732 BU  394AB

 
 
00H 30M 45.56S +47 31' 47.5" P.A. 277.4 SEP 0.82 MAG 8.49,8.77 SP G0 DIST. 49.33 PC (160.91 L.Y.)
 
 
Coord 2000
00308+4732
Discov num
BU  394
Comp
AB
Coord arcsec 2000
00 30 45.56 +47 31 47.5
Date first
1876
Date last
2016
Obs
55
Pa first
278
Pa last
279
P.A. Now (θ)
277.4°
Sep first
0.8
Sep last
0.8
Sep. Now (ρ)
0.82"
Mag pri
8.49
Mag sec
8.77
delta mag (ΔM)
0.28
Spectral class
G0 (yellow)
Pri motion ra
+005
Sec motion ra
Pri motion dec
-056
Sec motion dec
Notes
O (Orbital solution)
This double is physical.
 
 
00308+4732 SYSTEM COMPONENTS
 
 
Show name SAO coord_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 36427 00308+4732 BU 394 AB 1876 2016 55 277 0.8 8.49 8.77 0.28 Y <===
Show 36427 00308+4732 TOK 223 AC 1902 2002 6 200 105.5 8.49 10.95 2.46
Triple system
3 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Constellation
Cassiopeia
SAO
36427
HIP
2414
Tycho2
3252-02035-1
HD
2675
ADS
416
BD
BD+46 95
Distance
49.33
Distance ly
160.91
last precise pa
278.5
last precise sep
0.81
 
 
ORBITAL ELEMENTS
 
 
Period (P)142.14y Periastron (T)1992.37y Semi-major axis (a)0.689a
Eccentricity (e)0.847 Inclination (i)78° Longitude of periastron (ω)
Node (Ω)102.1° Note Grade4(1=Definitive, 9=Indet.)
Equinox2000 Last observation1991
label rho theta
2000 0.282 268.7
2001 0.325 270.1
2002 0.366 271.2
2003 0.405 272.1
2004 0.443 272.9
2005 0.479 273.5
2006 0.513 274.0
2007 0.546 274.5
2008 0.578 274.9
2009 0.608 275.3
2010 0.637 275.7
2011 0.666 276.0
2012 0.693 276.3
2013 0.719 276.5
2014 0.745 276.8
2015 0.769 277.0
2016 0.793 277.2
2017 0.816 277.4
2018 0.838 277.6
2019 0.859 277.8
2020 0.880 278.0
2021 0.900 278.2
2022 0.919 278.3
2023 0.938 278.5
2024 0.956 278.6
2025 0.973 278.8
2026 0.990 278.9
2027 1.006 279.0
2028 1.022 279.2
2029 1.037 279.3
2030 1.051 279.4

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

grafico orbita





grafico misure orbit6
Measures: green=micrometric, blue=interferometric, purple=photographic