Discovery certificate for object 2018bcy
TNS Astronomical Transient Report No. 18094

Date Received (UTC): 2018-04-30 09:34:51
Sender: Emmanuel Conseil

Emmanuel Conseil report/s the discovery of a new astronomical transient.

IAU Designation: AT 2018bcy
Coordinates (J2000): RA = 00:41:14.360 (10.309833) DEC = +40:56:17.50 (40.938194)
Discovery date: 2018-04-30 05:15:51 (JD=2458238.7193403)

Potential host galaxy: M31

Remarks: Emmanuel Conseil reports the discovery of a probable nova in M31 located 00 41 14.36 +40 56 17.5 and at magnitude 17.5 CV. The object is visible on 6 images (60s exposures) taken with Slooh space robotic telescope T1 between 05h15 and 05h22. The object is also visible on images (50s exposures) taken with Slooh space robotic telescope T2 between 05h17 and 05h31. There's no known object at this location and no asteroid. Image available at https://www.flickr.com/photos/econseil/40898724125/

Photometry

Discovery (first detection):
Discovery date: 2018-04-30 05:15:51
Flux: 17.6 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: The object is visible on 6 images (60s exposures) taken with Slooh space robotic telescope T1 between 05h15 and 05h22. Telescope T1 : CDK20 (Corrected Dall-Kirkham) 20" F/6.8 Camera T1 : FLI PL09000

Last non-detection:
Last non-detection date: 2018-03-05 20:19:00
Limiting flux: 19 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: Telescope : CDK17 (Corrected Dall-Kirkham) 17" F/6.8 Camera :FLI PL16803

Details of the new object can be viewed here: https://wis-tns.weizmann.ac.il/object/2018bcy