Discovery certificate for object 2018hoo
TNS Astronomical Transient Report No. 23752 [ 2018TNSTR1637....1X ]

Date Received (UTC): 2018-10-26 14:22:11
Sender: Mr. Zhijian Xu
Reporting Group: XOSS     Discovery Data Source: XOSS

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

IAU Designation: AT 2018hoo
Discoverer internal name: XMr6ZX
Coordinates (J2000): RA = 00:42:54.960 (10.729) DEC = +41:12:28.80 (41.208)
Discovery date: 2018-10-26 13:48:50 (JD=2458418.0755787)

Potential host galaxy: M31

Remarks: Zhijian Xu and Xing Gao, report the discovery of a possible nova (mag approximately 18.5) on severl 300-s survey images (limiting mag about 20.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Oct. 26.57558 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope). The transient approximately located at R.A.=00h42m54.96s +41d12'28".8 (equinox 2000.0). Which is about 120.0" east and 219.7" south of the center of the NGC224(M31).. Nothing is visible at this position on archival images taken on Oct. 13.76541 UT(limiting mag 21.0). NET UCAC-4 XMr6ZX C2018 10 26.57558 00 42 54.96 +41 12 28.8 18.5V C42,All images can be seen from: http://www.xjltp.com/XOSS/XMr6ZX/XMr6ZX.htm , C42,Xingming Observatory - NEXT, Mt. Nanshan. Observers Z.Xu,X.Gao,Measurers Z.Xu, 0.6-m f/8 Ritchey-Chretien telescope and CCD.

Photometry

Discovery (first detection):
Discovery date: 2018-10-26 13:48:50
Flux: 18.5 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: 0.6-m f/8 Ritchey-Chretien telescope + unfiltered CCD.

Last non-detection:
Last non-detection date: 2018-10-13 18:22:11
Limiting flux: 21 VegaMag
Filter: Clear-
Instrument: Other
Telescope: Other

Remarks: 0.6-m f/8 Ritchey-Chretien telescope + unfiltered CCD.

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