Nova in the constellation Delphinus, star went from 13 magnitude to 6 in a matter of hours, still getting brighter.
Thanks, I am going to the Northern part of Lower Michigan tonight, which will present a good opportunity to take a look. I'm not sure this is correct, however, since the lower the magnitude, the brighter the object: Maybe they mean 7 to 16 times as bright? From the Astronomer's Telegram:Novae can rise in brightness from 7 to 16 magnitudes, the equivalent of 50,000 to 100,000 times brighter than the sun, in just a few days.
An optical spectrum of PNV J20233073+2046041 (http://www.cbat.eps.harvard.edu/unconf/followups/J20233073+2...) was obtained (through patchy cloud) by the FRODOSpec instrument on the 2m robotic Liverpool Telescope on La Palma at 2013 August 14.909. The spectrum contains strong Balmer series emission exhibiting P Cygni profiles with velocities ~2000 km/s. A number of Fe II (also P Cygni profiles) and (weak) He I lines may be present. This object is likely to be a newly erupting classical nova (in the early fireball stage) and follow up observations are encouraged.