V1280 Scorpii
V1280 Scorpii is a nova observed in February 2007 in the constellation Scorpius, just south of M62. The nova was a 9th magnitude object when it was discovered independently by Yuji Nakamura and Yukio Sakurai from Japan, around February 4, and peaked at magnitude 3.9 on February 17.
Announced by the IAU in Electronic Telegram No. 835 and Circular No. 8803
23 days after discovery, dust formation was found to be occurring in the ejecta, consistent with the classification of the event as a CO nova. This dust formation peaked between 36 and 45 days from the wind that was mainly ejected 10.5 days after the event. On day 100, another brightening was observed, which corresponded to a second mass loss event. The expanding dust shell around the nova has an estimated velocity of 350 km/s.
