Discovery certificate for object 2018eaj
TNS Astronomical Transient Report No. 20748 [ 2018TNSTR.999....1M ]

Date Received (UTC): 2018-07-18 15:56:53
Sender: Jean-Claude Merlin
Source Group: None

Jean-Claude Merlin report/s the discovery of a new astronomical transient.

IAU Designation: AT 2018eaj
Coordinates (J2000): RA = 13:10:17.370 (197.572375) DEC = -49:06:47.40 (-49.113167)
Discovery date: 2018-07-18 11:57:24 (JD=2458317.9981944)


Remarks: Jean-Claude Merlin (Angers, France) reports probable cataclysmic variable in Centaurus at J2000 : RA 13:10:17.37 ; Dec -49:06:47.4. CCD images with luminance filter using the T31 iTelescope.net telescope (0.51-m f/6.8 astrograph + CCD + f/4.5 focal reducer) at Siding Spring (Australia) obtained on 2018 July 18 11:57:24 UT : magnitude 13.8. Further magnitudes with same telescope and filter : 2018 May 15 11:21:16 UT : magnitude 16.7 ; 2018 May 18 13:57:18 UT : magnitude 16.8 ; 2018 July 17 11:44:32 UT : magnitude 13.8. Probable identification with star 3UC082-152547.

Photometry

Discovery (first detection):
Discovery date: 2018-07-18 11:57:24
Flux: 13.8 STMag
Filter: Clear-
Instrument: Other
Telescope: Other

Last non-detection:
Last non-detection date: 2018-05-18 13:57:18
Limiting flux: 19 STMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: Apparent quiescent state at magnitude 16.8

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