V723 Cas = Nova Cas 1995

Position:   01h 05m 05s.66   +54 00' 42".5  [J2000] Iida
            01h 05m 05s.36   +54 00' 40".1  [J2000] Garradd
            01h 05m 05s.32   +54 00' 40".6  [J2000] James
This nova was discovered by Yamamoto on films taken on 1995 August 24.57UT. The magnitude at discovery was 9.2. Pre-discovery images have been found on Mike Collins' patrol films. Spectra obtained at Asiago confirm that this is a classical nova. Two novae are simultaneously visible in the constellation of Cassiopeia! (V705 Cas = Nova Cas 1993 is also observable).

The early lightcurve is very unusual. The rise to maximum was very slow and the nova peaked at mag 7.1 near JD 2450070. 65 days later, near JD 2450135 a second maximum occurred at approximately mag 8.0. This was followed, about 55 days later on JD 2450190 with a third maximum at about magnitude 8.6. Thereafter the nova faded to about mag 10 after which small fluctuations have been present. Certainly a very unusual nova which deserves close attention!

Charts and further information can be obtained by e-mailing the Editor.

Lightcurve to 500 days.

Lightcurve from 500 days (rev 6).

Early CCD image 1995 August 26 at about mag 9. Nick James, 0.30m f/5.25.

Wider field CCD image 1995 August 27. Denis Buczynski, 0.14m, f/3.5.

Deep CCD image 1995 August 29. Martin Mobberley, 0.49m f/4.5.

Deep CCD image 1995 September 2. Nick James, 0.30m f/5.25.

V-Band CCD image 1997 September 5. Nick James, 0.30m f/5.25.

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