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Post Info TOPIC: R Serpentis


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BD+15° 2918
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Maxima of the variable star R Serpentis on the 10th August 2017 



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Maxima of the variable star R Serpentis on the 18th August 2016



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HD 141850
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Maxima of the variable star R Serpentis on the 27th August 2015



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Title: On small variable star in Serpens
Authors: Harding, C. L.

You will he pleased to hear of a small variable star, which I have discovered since June 9th, in last year It is situated in Serpens; and my observations (which however are not very correct) give its position for 1800, as follows...

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R Serpentis (HD 141850) was discovered on the 9th June 1826 by the German astronomer Karl Ludwig Harding during the preperation of the Berlin Academic star charts, a project of the Royal Prussian Academy of Sciences. The yellowish-red star is located 600 light years away, midway between Beta and Gamma.

R Serpentis, however, had been observed prior to Harding's time, though not recognized as a variable; it appears on a French chart made by D'Agelet in March 1783, thus preserving for us the approximate date of a very early maximum.
Source



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Maxima of the variable star, R Serpentis, on the 5th September 2014



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Maxima of the variable star, R Serpentis, on the 13th September 2013



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Maxima of the variable star, R Serpentis, on the 22nd September 2012

Magnitude range: 5.2 - 14.4
Period: 356.4 days    
Type: Mira     
    
Position (J2000): R.A. 15 50 41.7341  |  Dec. +15° 08' 01.108''

Google earth file: R Serpentis.kmz (2kb, kmz)



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Maxima of the variable star R Serpentis on the 2nd October, 2011

Magnitude range: 5.2 - 14.4
Period=356.4days   
Type=M     
   
Position (J2000): R.A. 15 50 41.7341  |  Dec. +15° 08' 01.108''



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