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ZTF J1539+5027

(binary star of two white dwarfs with tight orbit)

ZTF J1539+5027 is an binary star consisting of two white dwarves. Its orbital period is just under 7 minutes and is measurably decreasing due to gravitational waves. It is an eclipsing binary and a double-lined spectroscopic binary. The hotter of the two has a temperature on the order of 50,000 K. The light curve shows not only the reductions due to the eclipses, but a brightening of the less bright star when illuminated by its companion, something like that of a transiting planet. Characteristics:


(star,binary star,white dwarf)
Further reading:
http://en.wikipedia.org/wiki/ZTF_J153932.16%2B502738.8
RedshiftParsecs
/Distance
Lightyears
/Lookback Years
  
~02kpc8.00klyZTF J1539+5027
Coordinates:ZTF J1539+5027
J153932.1588023113+502738.782960414

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