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Line 1: − [[Image:Position Beta.png|thumb|right|250px|Location of Algol (Beta Persei) in the constellation of Perseus.]]+ + + + + + + + + + + + + + + +
Added night sky template
{{Night Sky
| image =Position Beta.png
| designation =Beta Persei
| rightascension =03<sup>h</sup> 08<sup>m</sup> 10.1315<sup>s</sup>
| declination =+40<sup>o</sup> 57′ 20.332″
| distance =93 ±2 ly
| constellation =[[Perseus]]
| type =[[Binary star]]
| dimensions =
| magnitude =Absolute Mag: -0.15<br/>Apparent Mag: 2.12
| redshift =
| radvelocity =3.7 km/s
| propmotion =RA: 2.39 mas/yr<br/>Dec.: -1.44 mas/yr
| parallax =35.14 ±0.90 mas
}}
'''Algol''', also known as '''Beta Persei''', is a triple star system located 92.8 light years away in the constellation of [[Perseus]]. A star system that has been well known throughout [[human history]], it is also the first and most well known eclipsing binary. Normally Algol's apparent magnitude is 2.1, but every 2 days, 20 hours, and 49 minutes, the magnitude drops to 3.4 for some 10 hours. This is due to Algol A (Beta Persei A) being regularly eclipsed from our point of view, by the dimmer Algol B (Beta Persei B).<ref>http://csep10.phys.utk.edu/astr162/lect/binaries/algol.html</ref>
'''Algol''', also known as '''Beta Persei''', is a triple star system located 92.8 light years away in the constellation of [[Perseus]]. A star system that has been well known throughout [[human history]], it is also the first and most well known eclipsing binary. Normally Algol's apparent magnitude is 2.1, but every 2 days, 20 hours, and 49 minutes, the magnitude drops to 3.4 for some 10 hours. This is due to Algol A (Beta Persei A) being regularly eclipsed from our point of view, by the dimmer Algol B (Beta Persei B).<ref>http://csep10.phys.utk.edu/astr162/lect/binaries/algol.html</ref>