Supernova SN 2014dt (= PSN J12215757+0428185) in Messier 61

Supernova SN 2014dt ( = PSN J12215757+0428185) in M61 - 31 Oct. 2014

Supernova SN 2014dt ( = PSN J12215757+0428185) in M61 – 31 Oct. 2014

Updates: this transient has been spectroscopically confirmed as a peculiar type Ia supernova and it is now officially named SN 2014dt, after the CBAT issued the CBET 4011 (login required) Circular, including our observations!

Six years after SN 2008in, the beautiful Messier 61 spiral galaxy in Virgo seems to host a new supernova, SN 2014dt. Its temporary designation was PSN J12215757+0428185, and was discovered by the Japanese amateur astronomer K. Itagaki on 29.83 Oct. 2014.

At Virtual Telescope, accordingly with our scientific program covering all the possible supernovae, we imaged this transient early on the 31 Oct. morning, while the sky was already brightening because of the rising Sun. The galaxy was also  very low on the east, around 15 deg of altitude.

Despite this, the supernova was easily captured, as visible in the image above. The picture comes from the average of six, 120-seconds exposures, remotely collected with the  PlaneWave 17″+Paramount ME+SBIG STL-6303E robotic unit part of the Virtual Telescope Project. The transient was estimated at mag. 13.0 (R mags for the reference stars from UCAC-4).

Located at about 52 millions of light years from us, Messier 61 already hosted six supernova event and this one is the 7th one. In 2006, at the early days of the Virtual Telescope Project’s life, we imaged its supernova SN 2006ov, as from the image below.

Messier 61 and SN 2006ov - 29 Nov. 2006

Messier 61 and SN 2006ov – 29 Nov. 2006

We will monitor its evolution on the incoming weeks.

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