RA/DEC (2000)
20:52:28.860 +16:37:20.30
313.12025 +16.622306
Type
CV
Redshift
0
Discovery ReportClassification Report
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2025-10-08 13:16:37.344
TNS AT
Y
Public
Y
Discovery Mag
12.73
Filter
Clear-
Reporter/s
Jianlin Xu, Ziyang Mai, Mi Zhang, Guoyou Sun, Jiangao Ruan, Jingyuan Zhao, Wenjie Zhou, Yong Ma, Ye, Zhuoyang Chen (Xingming Obs.), Hanjie Tan (AUUK), Guangwei Wu (NAAA), Xing Gao, Ali Esamdin, Chunhai Bai, Yong Wang (XAO), on behalf of the KATS team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2025zrj - 2025-10-08 17:41:30 Lesedi / Mookodi (BlackGEM)z=
 ▌AT_2025zrj - 2025-10-08 15:20:58 Other / Other (XOSS)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),

Light curves

 ▌Other_Other_Clear
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
Spectra
 ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22179 2025-10-08 17:41:30 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Simon de Wet BlackGEM tns_2025zrj_2025-10-08_17-41-29.807_Lesedi_Mookodi_BlackGEM.csv Object The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager as part of the SAAO’s "Intelligent Observatory" rapid follow-up program. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom.
22181 2025-10-08 15:20:58 Other / Other 7200 Xing Gao (Xingming Obs.) Jingyuan Zhao (Xingming Obs.) XOSS tns_2025zrj_2025-10-08_15-20-58_Other_Other_XOSS.DAT tns_2025zrj_2025-10-08_15-20-58_Other_Other_XOSS.fit Object We obtained a spectrum of the transient using the Alpy 600 spectrograph mounted on the 0.6-m f/9 Ritchey-Chretien telescope at Xingming Observatory.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- Other_Other 2025-10-08 13:16:37 - 2025-10-08 13:16:37 2460957.05321 - 2460957.05321 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522561 2025-10-08 13:16:37 2460957.05321 12.73 19.5 VegaMag Clear- Other_Other 60 Xing Gao
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
272632 2025-10-08 14:00:01 XOSS_Bot0 Jianlin Xu, Ziyang Mai, Mi Zhang et al. XOSS XOSS 20:52:28.860 +16:37:20.30 2025-10-08 13:16:37.344 12.73 Clear- Other KATS25T001 XOSS Cataclysmic variable candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/kats25t001.html 2025TNSTR4042....1X N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22181 2025-10-09 10:10:38 Jingyuan Zhao Jingyuan Zhao, Xing Gao (Xingming Obs.) XOSS CV 0 1 XOSS Our spectrum shows a blue continuum with weak Hα emission line and a series of prominent Balmer absorption lines. The spectral characteristics suggest AT 2025zrj is a dwarf nova. 2025TNSCR4052....1Z
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22181 2025-10-08 15:20:58 Other / Other 7200 Xing Gao (Xingming Obs.) Jingyuan Zhao (Xingming Obs.) XOSS tns_2025zrj_2025-10-08_15-20-58_Other_Other_XOSS.DAT tns_2025zrj_2025-10-08_15-20-58_Other_Other_XOSS.fit Object We obtained a spectrum of the transient using the Alpy 600 spectrograph mounted on the 0.6-m f/9 Ritchey-Chretien telescope at Xingming Observatory.
22179 2025-10-08 19:29:19 Simon de Wet Simon de Wet BlackGEM CV 0 1 BlackGEM Spectrum shows Halpha in emission and higher order Balmer lines in absorption. Object is likely a Galactic CV. 2025TNSCR4044....1d
Spectra
ID Obs-date (UT) Tel / Inst Exp-Time Observer/s Reducer/s Group Spectrum ascii file Spectrum fits file Spec. Type Assoc. Groups End prop. period Remarks
22179 2025-10-08 17:41:30 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Simon de Wet BlackGEM tns_2025zrj_2025-10-08_17-41-29.807_Lesedi_Mookodi_BlackGEM.csv Object The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager as part of the SAAO’s "Intelligent Observatory" rapid follow-up program. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom.

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