02020+7054 BU  513AB (48 Cas)

 
 
02H 01M 57.55S +70 54' 25.4" P.A. 338.7 SEP 0.52 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
220
Pa first
264
Pa last
320
P.A. Now (θ)
338.7°
Sep first
1.0
Sep last
0.6
Sep. Now (ρ)
0.52"
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_2000 discov# comp first last obs pa sep mag1 mag2 d_mag orb current
Show 48 Cas 4554 02020+7054 BU 513 AB 1878 2013 220 339 0.5 4.65 6.74 2.09 Y <===
Show 4554 02020+7054 BU 513 AC 1878 2015 10 52 22.8 4.65 13.20 8.55
Show 4554 02020+7054 BU 513 AD 1898 2015 7 87 54.0 4.65 12.60 7.95
Quadruple system
4 visible stars in this system
 
 
OTHER CATALOGS AND DESIGNATIONS
 
 
Name
48 Cas
Other name
A Cas
Constellation
Cassiopeia
SAO
4554
HIP
9480
Tycho2
4315-02126-1
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
last precise pa
319.5
last precise sep
0.62
 
 
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 Note Grade2(1=Definitive, 9=Indet.)
Equinox Last observation2010
label rho theta
2000 0.805 262.0
2001 0.796 265.1
2002 0.786 268.3
2003 0.775 271.5
2004 0.762 274.9
2005 0.749 278.4
2006 0.734 282.0
2007 0.718 285.8
2008 0.701 289.7
2009 0.683 293.9
2010 0.664 298.3
2011 0.644 302.9
2012 0.623 307.9
2013 0.602 313.1
2014 0.581 318.8
2015 0.559 325.0
2016 0.537 331.6
2017 0.516 338.7
2018 0.495 346.5
2019 0.475 355.0
2020 0.456 4.2
2021 0.439 14.1
2022 0.424 24.8
2023 0.412 36.2
2024 0.402 48.2
2025 0.396 60.7
2026 0.394 73.5
2027 0.396 86.3
2028 0.402 98.8
2029 0.413 110.8
2030 0.428 122.0

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