It is estimated that up to 10% of all visible stars represent binary star systems. Binaries are star systems where two or more stars revolve around each other. When these revolutions of one component star around the other leads to a change in magnitude, we have an example of an eclipsing binary. Sirius, one of the brightest stars in the sky, is a binary system involving one dominant bluish component and a less dominant secondary component.
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Proper Star Name: Albireo Bayer Letter: â Cygni Tycho Catalog: TYC 2133-2964-1 SAO Catalog: SAO 87301 Luminosity 670 +/- 89 x Sun Distance: 386 +/- 25 light yrs RA / Dec: 19h 30m 58s / +27° 58' 17" B-V Color Index: +1.065 mag Magnitude (Visual): 3.07 Secondary:
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Date: Aug 02, 2005 23:42 - 23:59 UT+3 Location: Athens, Greece Equipment: AP 160/f7.5 Starfire EDF Losmandy G-11 GEM SBIG ST-2000XM SBIG CFW-8A Integrations: R: 80 sec (10 x 8 sec) G: 80 sec (10 x 8 sec) B: 80 sec (10 x 8 sec)
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Software: CCDSoft V5.00.126 AIP4Win V1.4.25 Photoshop V6 Processing: Reduction Calibration/Registration RGB Combine Cropping JPG Compression |