Discovery certificate for object 2020dzr
TNS Astronomical Transient Report No. 63512 [ 2020TNSTR.709....1B ]

Date Received (UTC): 2020-03-04 22:10:05
Sender: Mr. Raffaele Belligoli
Reporting Group: ISSP     Discovery Data Source: ISSP

Flavio Castellani - Raffaele Belligoli report/s the discovery of a new astronomical transient.

IAU Designation: AT 2020dzr
Discoverer internal name: Andromeda Galaxy
Coordinates (J2000): RA = 00:42:08.560 (10.535667) DEC = +41:26:00.80 (41.433556)
Discovery date: 2020-03-04 18:12:59.000 (JD=2458913.2590162)

Potential host galaxy: M31

Remarks: F. Castellani, Verona, Italy reports the discovery by Flavio Castellani, Raffaele Belligoli and Claudio Marangoni, in the course of the ISSP Italian Supernovae Search Project, of an apparent nova in two images taken with a Moravian G4-9000 KAF CCD unfiltered, from Monte Baldo Observatory (Ferrara di Monte Baldo, Verona, Italy), with the 0.4m f.8 Ritchey-Chrétien telescope, obtained on 2020 March 04.7596. The new object is located at RA 00 42 08.56 DEC +41 26 00.8 (equinox 2000.0) Apparent magnitude about 18.0 in host Galaxy M31 Nothing is visible at this position on the reference image taken on 2020-02-28.769

Photometry

Discovery (first detection):
Discovery date: 2020-03-04 18:12:59.000
Flux: 18 STMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: M31 Discovery image on '2020-03-04.7596' UT using 7x 300s frames (2100s total) obtained by a Moravian G4-9000 KAF unfiltered CCD with the 0.4m f.8 Ritchey-Chrétien telescope from Monte Baldo "A.Gelodi" Astronomic Observatory, località Novezzina, Ferrara di Monte Baldo, Verona, Italy. (Latitudine 45° 41' 52" N. Longitudine 10° 51' 32" E). The discovery magnitude is 18.0±0.04 mag in the CV band (clear visual). We will continue to monitor the nova light curve and strongly encourage additional follow-up observations.

Last non-detection:
Last non-detection date: 2020-02-28 18:09:19
Limiting flux: 19.5 STMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: No stellar source is visible at the transient's position in our past images including reference image dated ‘2020-02-28T18:09:19’ and '2020-02-14T17:45:12' The images was taken by ten frames 300-s (3000 total sec.) with a Moravian G4-9000 KAF CCD unfiltered (limiting magnitude = 19.5), from Monte Baldo Observatory (Ferrara di Monte Baldo, Verona, Italy), with 0.4m f.8 Ritchey-Chrétien telescope.

Archival info: DSS
Remarks: Nothing is visible at this position on Aladin catalog.

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2020dzr