ALERT! URGENT Photometry urgently required for "Tabby's Star" KIC 8462852
Saturday, May 20, 2017 at 11:03PM
Ian Musgrave in Alerts, alert, variable star

Location of Tabby's star, other wise known as Boyajian's Star, KIC 8462852and TYC 3162-665-1 as seen from Mayhill, New Mexico. The 12th magnitude star is in Cygnus, approximately between alpha and delta Cygni. The field of view of Y05 is indicated, click to embiggen.

Photometry is urgently required for "Tabby's Star", (TYC 3162-665-1, KIC 8462852). Originally identified by by Tabetha Boyajian in the Kepler data it is most intriguing because of larger irregular dips in brightness which could not be explained by exoplanets.

The reasons for this are unclear, and everything from disintegrating cometary clouds and alien megastrucures have been proposed. Now the first significant fall in brightness since 2015 is occuriing (see here for magnitude chart), more details are in this astronomers telegram.

Observations are urgently required to follow this dimming in multiple wavelengths. Full details of what is required for observations are here https://www.aavso.org/aavso-alert-notice-532 . The AAVSO also have magnitude comparison charts to follow the star over this dimming.

The star is in Cygnus approximately between alpha and delta Cygni. It is only observable from Northern Scopes, between 1:30 am local time to astronomical twilight at around 4:00 am.

Coordinates (J2000):  RA 20 06 15.46 , Dec +44 27 24.8

 

 

 

 

Article originally appeared on Remote Internet Telescope Network - Online Imaging & Telescope Hosting Service (http://www.itelescope.net/).
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