RA/DEC (2000)
20:45:09.312 +23:23:53.20
311.28880024545 +23.398111745455
Type
SN IIn
Redshift
0.072
Discovery ReportClassification Report
Related AstroNotes: 2025-248, 2025-249
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2025-07-21 18:54:49.248
TNS AT
Y
Public
Y
Discovery Mag
19.19
Filter
Clear-
Reporter/s
Jianlin Xu, 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

 ▌SN_2025ruw - 2025-08-22 09:30:02 P200 / NGPS (ZTF)z=
 ▌SN_2025ruw - 2025-08-09 04:05:27 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
 ▌SN_2025ruw - 2025-08-09 04:05:27 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌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
21874 2025-08-22 09:30:02 P200 / NGPS Nicholas Earley, Sam Rose Sam Rose ZTF tns_2025ruw_2025-08-22_09-30-02_P200_NGPS_ZTF.ascii Object
21741 2025-08-09 04:05:27 ESO-NTT / EFOSC2-NTT 600 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter ePESSTO+ tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+_0.asci tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+_0.fits Object
21735 2025-08-09 04:05:27 ESO-NTT / EFOSC2-NTT 600 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter ePESSTO+ tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2025-07-14 02:05:06 - 2025-08-02 21:49:24 2460870.586881 - 2460890.409308 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507125 2025-08-02 21:49:24 2460890.409308 17.97 0.04 ABMag L-GOTO GOTO-N_GOTO-1 360
507124 2025-07-14 02:05:06 2460870.586881 19.3 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-07-16 09:51:16 - 2025-07-19 08:24:09 2460872.9106019 - 2460875.8501042 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506479 2025-07-19 08:24:09 2460875.8501042 19.7441 0.156878 20.608 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
506478 2025-07-16 09:51:16 2460872.9106019 19.9791 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
Clear- Other_Other 2025-07-21 18:54:49 - 2025-07-21 18:54:49 2460878.28807 - 2460878.28807 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504080 2025-07-21 18:54:49 2460878.28807 19.19 0.17 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
264822 2025-08-03 07:25:55 GOTO_bot A. Kumar,G. Ramsay,K. Ackley et al. GOTO GOTO 20:45:09.294 +23:23:53.15 2025-08-02 21:49:24.384 17.97 L-GOTO Other GOTO25fpi GOTO This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Svetoslav Alexandrov, Andres Eloy Martinez Rojas, Antonio Pasqua, M.T. Mazzucato, Cledison Marcos da Silva N
264494 2025-07-31 18:20:00 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 20:45:09.312 +23:23:53.20 2025-07-19 08:24:09.003 19.7441 r-ZTF PSN ZTF25abbzcps ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abbzcps N
263324 2025-07-22 03:33:01 Mi Zhang Jianlin Xu,Mi Zhang,Guoyou Sun et al. XOSS XOSS 20:45:09.280 +23:23:52.90 2025-07-21 18:54:49.248 19.19 Clear- PSN KATS25O010 XOSS SN candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/kats25o010.html 2025TNSTR2833....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
21874 2025-08-26 22:03:26 ZTF_Bot1 K. Das, A. Mehla, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN IIn 0.072 1 ZTF 2025TNSCR3388....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
21874 2025-08-22 09:30:02 P200 / NGPS Nicholas Earley, Sam Rose Sam Rose ZTF tns_2025ruw_2025-08-22_09-30-02_P200_NGPS_ZTF.ascii Object
21741 2025-08-10 12:42:07 ePESSTOplus_Bot1 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani, Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, E. A. Zimmerman on behalf of ePESSTO+ ePESSTO+ SN II 0.072 1 ePESSTO+ 2025TNSCR3138....1v
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
21741 2025-08-09 04:05:27 ESO-NTT / EFOSC2-NTT 600 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter ePESSTO+ tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+_0.asci tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+_0.fits Object
21735 2025-08-09 18:19:17 ePESSTOplus_Bot1 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani, Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, O. Yaron on behalf of ePESSTO+ ePESSTO+ Other 0.072 1 ePESSTO+ 2025TNSCR3127....1v
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
21735 2025-08-09 04:05:27 ESO-NTT / EFOSC2-NTT 600 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter ePESSTO+ tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025ruw_2025-08-09_04-05-27_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Thu, 07/31/2025 - 18:20

Object coordinates updated

Object coordinates updated according to AT-report 264494 of Group ZTF
Previous RA, DEC: 20:45:09.280, +23:23:52.90 (311.288667, +23.398028)
Updated RA, DEC: 20:45:09.312, +23:23:53.20 (311.28880024545, +23.398111745455)