RA/DEC (2000)
00:42:40.640 +41:07:45.80
10.669333 +41.129389
Type
---
Redshift
Discovery Report
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2019-10-30 15:37:04.000
TNS AT
Y
Public
Y
Host Name
M31
Discovery Mag
18.1
Filter
Clear-
Reporter/s
Guoyou Sun and Xing Gao
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Light curves

 ▌Other_Other_Clear
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
No Data
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- Other_Other 2019-10-29 13:56:55 - 2019-10-30 15:37:04 2458786.0811921 - 2458787.1507407 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
98803 2019-10-30 15:37:04 2458787.1507407 18.1 19.5 VegaMag Clear- Other_Other 300 Guoyou Sun and Xing Gao Guoyou Sun and Xing Gao, report the discovery of a possible nova (mag approximately 18.1) on severl 300-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Oct. 30.65074 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=00h42m40.64s +41d07'45".8 (equinox 2000.0). Which is about 41.5" west and 502.7" south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 29.58119 UT(limiting mag 20.0).
98802 2019-10-29 13:56:55 2458786.0811921 20 VegaMag Clear- Other_Other 300 Xing Gao [Last non detection] using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ).
AT Reports
ID Time received (UT) Sender Reporter/s Reporting group Disc. Data Source RA DEC Discovery date (UT) Discovery Mag. Filter Related files AT Type Host name Internal name Assoc. Groups End prop. period Remarks ADS Bibcode Unreal Auto classification
51165 2019-10-30 16:18:46 Mi Zhang Guoyou Sun and Xing Gao et al. XOSS XOSS 00:42:40.640 +41:07:45.80 2019-10-30 15:37:04.000 18.1 Clear- 1 PNV M31 XMNGS2 XOSS Guoyou Sun and Xing Gao, report the discovery of a possible nova (mag approximately 18.1) on severl 300-s survey images (limiting mag about 19.5) taken by Xing Gao in Xingming Observatory Sky Survey(C42) around Oct. 30.65074 UT using a unfiltered CCD ( + 0.6-m f/8 Ritchey-Chretien telescope ). The transient approximately located at R.A.=00h42m40.64s +41d07'45".8 (equinox 2000.0). Which is about 41.5" west and 502.7" south of the center of the NGC224(M31). Nothing is visible at this position on archival images taken on Oct. 29.58119 UT(limiting mag 20.0). 2019TNSTR2227....1G N
Related files
File Comments Last Modified (UT) Modified By
tns_2019tsc_atrep_51165_XOSS.png Discovery Image 2019-10-30 16:33:59 Mi Zhang
No Data

Comments

George
Carey

Wed, 10/30/2019 - 17:25

Pre-discovery image

The object is just faintly visible in a stack of 9x600 second images, luminance filter.

Time of last image of the stack 2019-10-29.8341

Stacked images subtracted from reference image.

AT 2019tsc_prediscovery1.jpg