ASASSN-17hx, a newly discovered galactic nova in Scutum: an image (23 June 2017)
A new galactic nova, ASASSN-17hx, as just be confirmed in Scutum. Since its discovery, it increased its brighness significantly, becoming accessible to small telescopes. Let’s hope it will brighten more and more.
The image above is the average of five, 60-seconds exposures, unfiltered, remotely taken with “Elena” (PlaneWave 17″+Paramount ME+SBIG STL-6303E) robotic unit available at Virtual Telescope. The image scale is 1.2″/pixel.
From our images, we measured a magnitude of 11.7 (unfiltered, R-mags for the reference stars from UCAC-4). At the discovery time (19.41 June 2017), its brightness was estimated at V=14.8. Spectroscopy revealed this transiet to be a He/N type nova, while the only pre-outburst counterpart closer than 1″ to the nova was found among the Gaia data, with a source about 6 .6 magnitudes fainter. Its position is: RA = 18 31 45.89; Decl. = -14 18 55.9 (J2000.0).
We will follow-up this target to see if it is still increasing its brightness.
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