02020+7054 BU 513 AB (48 Cas)

 
 
02h 01m 57.55s +70 54' 25.4" P.A. 320.00 sep 0.6 mag 4.65,6.74 Sp A3V dist. 35.26 pc (115.02 l.y.)
 
 
Coord 2000 02020+7054 Discov num BU  513 Comp AB Coord arcsec 2000 02 01 57.55 +70 54 25.4
Date first 1878 Date last 2013 Obs 219
Pa first 264 Pa last 319.5 P.A. Now (θ) 36.2°
Sep first 1.0 Sep last 0.62 Sep. Now (ρ) 0.412"
Mag pri 4.65 Mag sec 6.74 delta mag (ΔM) 2.09 Spectral class A3V (white)
Pri motion ra -064 Sec motion ra -064
Pri motion dec +009 Sec motion dec +009
Notes N O (See Notes, Orbital solution)
This double is physical.
 
 
02020+7054 SYSTEM COMPONENTS
 
 
Show name SAO coord wds_name last obs pa sep mag1 mag2 d_mag orb current
Show 48 Cas 4554 02 01 58 +70 54 25 BU 513 AB 2013 219 320 0.6 4.65 6.74 2.09 Y <===
Show 4554 02 01 58 +70 54 25 BU 513 AC 2015 10 52 22.8 4.65 13.20 8.55
Show 4554 02 01 58 +70 54 25 BU 513 AD 2015 7 87 54.0 4.65 12.60 7.95
Quadruple system
4 estimated visually detectable stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name 48 Cas Var name NSV694 Cas Constellation Cassiopeia SAO 4554
HIP 9480 Tycho2 4315-02126-1 Gaia DR2 522185735919412480 HD 12111
HR 575 GC 2424 ADS 1598 BD BD+70 153
Flamsteed 48 Cassiopeiae Flamsteed name 48 Cas Distance 35.26 Distance ly 115.02
 
 
ORBITAL ELEMENTS
 
 
Period (P)61.14y± 0.05 Periastron (T)1964.35y± 0.09 Semi-major axis (a)0.614a± 0.002
Eccentricity (e)0.355± 0.001 Inclination (i)16.7°± 0.9 Longitude of periastron (ω)19.5°± 3.6
Node (Ω)48.2°± 3.2 Notesn ReferenceDRs2012
Equinox Last observation2010 Grade2(1=Definitive, 9=Indet.)
label theta rho
2000 262.0 0.805
2001 265.1 0.796
2002 268.3 0.786
2003 271.5 0.775
2004 274.9 0.762
2005 278.4 0.749
2006 282.0 0.734
2007 285.8 0.718
2008 289.7 0.701
2009 293.9 0.683
2010 298.3 0.664
2011 302.9 0.644
2012 307.9 0.623
2013 313.1 0.602
2014 318.8 0.581
2015 325.0 0.559
2016 331.6 0.537
2017 338.7 0.516
2018 346.5 0.495
2019 355.0 0.475
2020 4.2 0.456
2021 14.1 0.439
2022 24.8 0.424
2023 36.2 0.412
2024 48.2 0.402
2025 60.7 0.396
2026 73.5 0.394
2027 86.3 0.396
2028 98.8 0.402
2029 110.8 0.413
2030 122.0 0.428


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



 
 


wds02020%2B7054b.png orbit plot
Measures: green=micrometric, blue=interferometric, purple=photographic