00308+4732 BU 394 AB (HD 2675)

 
 
00h 30m 45.56s +47° 31' 47.5" P.A. 278.00 sep 0.8 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 2018 Obs 66
Pa first 278 Pa last 277.8 P.A. Now (θ) 278.5°
Sep first 0.8 Sep last 0.826 Sep. Now (ρ) 0.938"
Mag pri 8.49 Mag sec 8.77 delta mag (ΔM) 0.28 Spectral class G0 (yellow)
Pri motion ra +018 Sec motion ra -005
Pri motion dec -057 Sec motion dec -052
Notes O T (Orbital solution, Parallax indicates physical)
rPM=0.394
This double is physical.
 
 
00308+4732 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show HD 2675 36427 00 30 46 +47 31 48 BU 394 AB 2018 66 278 0.8 8.49 8.77 0.28 Y <===
Show 36427 00 30 46 +47 31 48 TOK 223 AC 2015 10 201 105.5 8.49 10.95 2.46
Triple system
3 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name HD 2675 Constellation Cassiopeia SAO 36427 HIP 2414
Tycho2 3252-02035-1 Gaia DR2 390973763472251392 HD 2675 ADS 416
BD BD+46 95 Distance 49.33 Distance ly 160.91
 
 
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° Notes ReferenceZul1997b
Equinox2000 Last observation1991 Grade3(1=Definitive, 9=Indet.)
label theta rho
2000 268.7 0.282
2001 270.1 0.325
2002 271.2 0.366
2003 272.1 0.405
2004 272.9 0.443
2005 273.5 0.479
2006 274.0 0.513
2007 274.5 0.546
2008 274.9 0.578
2009 275.3 0.608
2010 275.7 0.637
2011 276.0 0.666
2012 276.3 0.693
2013 276.5 0.719
2014 276.8 0.745
2015 277.0 0.769
2016 277.2 0.793
2017 277.4 0.816
2018 277.6 0.838
2019 277.8 0.859
2020 278.0 0.880
2021 278.2 0.900
2022 278.3 0.919
2023 278.5 0.938
2024 278.6 0.956
2025 278.8 0.973
2026 278.9 0.990
2027 279.0 1.006
2028 279.2 1.022
2029 279.3 1.037
2030 279.4 1.051


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



 
 


wds00308%2B4732a.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic