Alberio

Alberio

R.A. 19h 30m 57.766s

Dec. +27° 58' 9.23"

Mean Radial Velocity -23.5

Magnitude (B1 Cyg) +3.07 , ( B2 Cyg) +4.67

Distance 118.20 pc

Location In Cygnus, within Milky Way

Other IDs [B1 Cyg , HIP95947,TYC 2133-02964-1],[B2 Cyg, HIP 95951,TYC 2133-02963-1]

Element 1 and 2 Spectral type K3 , Red Giant

Element 3 and 4 Main sequence stars ,Spectral type B8

Orbital Period 1165 and 585 years

Alberio
R.A.	19h 30m 57.766s
Dec.	+27° 58' 9.23"
Mean Radial Velocity	-23.5
Magnitude	(B1 Cyg) +3.07 , ( B2 Cyg) +4.67
Distance	118.20 pc
Location	In Cygnus, within Milky Way
Other IDs	[B1 Cyg , HIP95947,TYC 2133-02964-1],[B2 Cyg, HIP 95951,TYC 2133-02963-1]
Element 1 and 2	Spectral type K3 , Red Giant
Element 3 and 4	Main sequence stars ,Spectral type B8
Orbital Period	1165 and 585 years

Scope	8" Intes Micro mn-86
Mount	EQ6 unguided.
Exposure	5 x 0.3 sec for the hx516, 224 out of 408 frames for the webcam
Post-processing	Stacked in registax
Filters	IR
Camera	Toucam 2
Location	Claines
Date	17th July 2005

This is a wonderful visual binary system in Cygnus. Very easy to find and spectacular to look at through binoculars or telescope. The brighter of the two stars is yellow/orange (the star has a temperature of about 4200 K), while the fainter one is a hot blue star (temperature of 11,300 K). The separation is 34" arc seconds.