Discovery certificate for object 2020ely
TNS Astronomical Transient Report No. 64503 [ 2020TNSTR.801....1G ]

Date Received (UTC): 2020-03-15 01:35:03
Sender: Mr. Mi Zhang
Reporting Group: XOSS     Discovery Data Source: XOSS

Zhijian Xu and Xing Gao report/s the discovery of a new astronomical transient.

IAU Designation: AT 2020ely
Discoverer internal name: XMr9ZX
Coordinates (J2000): RA = 09:55:54.810 (148.978375) DEC = +69:03:10.20 (69.052833)
Discovery date: 2020-03-14 14:33:41.000 (JD=2458923.1067245)

Potential host galaxy: M81

Remarks: Zhijian Xu and Xing Gao report the discovery of a possible nova in M81. The transient is approximately Mag. 19.5 on several 300-s survey images (limiting mag about 20.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Mar. 14.60672 UT using a r'(Sloan) filtered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=09h55m54.81s +69d03'10".2 (equinox 2000.0). Which is about 116.1" east and 44.9" south of the center of the M81. Nothing is visible at this position on archival images taken on Mar 13.60015 (limiting mag 20.0). NET UCAC-4 XMr9ZX C2020 03 14.60672 09 55 54.81 +69 03 10.2 19.5 r C42 http://xjltp.china-vo.org/XMr9ZX.html. Xingming Observatory(C42) - NEXT, Mt. Nanshan, 0.6-m f/8 Ritchey-Chretien telescope and CCD.

Photometry

Discovery (first detection):
Discovery date: 2020-03-14 14:33:41.000
Flux: 19.5 VegaMag
Filter: r-Sloan
Instrument: Other
Telescope: Other

Remarks: Zhijian Xu and Xing Gao report the discovery of a possible nova in M81. The transient is approximately Mag. 19.5 on several 300-s survey images (limiting mag about 20.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Mar. 14.60672 UT using a r'(Sloan) filtered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=09h55m54.81s +69d03'10".2 (equinox 2000.0). Which is about 116.1" east and 44.9" south of the center of the M81. Nothing is visible at this position on archival images taken on Mar 13.60015 (limiting mag 20.0). NET UCAC-4 XMr9ZX C2020 03 14.60672 09 55 54.81 +69 03 10.2 19.5 r C42 http://xjltp.china-vo.org/XMr9ZX.html. Xingming Observatory(C42) - NEXT, Mt. Nanshan, 0.6-m f/8 Ritchey-Chretien telescope and CCD.

Last non-detection:
Last non-detection date: 2020-03-13 14:24:13
Limiting flux: 20 VegaMag
Filter: r-Sloan
Instrument: Other
Telescope: Other

Remarks: using a r'(Sloan) filtered CCD (+ 0.6-m f/8 Ritchey-Chretien telescope).

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