RA/DEC (2000)
16:09:17.649 +09:40:46.49
242.3235372 +9.6795819
Type
SN Ic-BL
Redshift
0.1
Discovery ReportClassification Report
Related AstroNotes: 2025-176
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-05-17 10:19:17.996
TNS AT
Y
Public
Y
Discovery Mag
19.7607
Filter
g-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025koz - 2025-06-02 01:22:07 NOT / ALFOSC (BlackGEM)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-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌GOTO-N_GOTO-1_L
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
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
21241 2025-06-02 01:22:07 NOT / ALFOSC 1200 Gerard Garcia-Moreno, Mathias Gort Gerard Garcia-Moreno BlackGEM tns_2025koz_2460828.557028947_NOT_ALFOSC_BlackGEM.txt tns_2025koz_2460828.557028947_NOT_ALFOSC_BlackGEM.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-05-17 13:47:30 - 2025-05-17 13:47:30 2460813.074651 - 2460813.074651 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
489417 2025-05-17 13:47:30 2460813.074651 19.4 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-05-20 06:06:46 - 2025-05-20 06:06:46 2460815.7547 - 2460815.7547 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
491203 2025-05-20 06:06:46 2460815.7547 19.01 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-05-24 05:55:50 - 2025-05-24 05:55:50 2460819.74711 - 2460819.74711 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
491204 2025-05-24 05:55:50 2460819.74711 18.881 0.122 19.41 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
L-GOTO GOTO-N_GOTO-1 2025-05-18 23:48:50 - 2025-05-18 23:48:50 2460814.492254 - 2460814.492254 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
489418 2025-05-18 23:48:50 2460814.492254 19.4 0.17 ABMag L-GOTO GOTO-N_GOTO-1 180
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-04-22 07:24:02 - 2025-05-20 02:38:48 2460787.8083565 - 2460815.6102778 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
491768 2025-05-20 02:38:48 2460815.6102778 19.37 0.1 21 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
491767 2025-04-22 07:24:02 2460787.8083565 20.73 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-05-17 11:18:39 - 2025-05-17 11:18:39 2460812.9712847 - 2460812.9712847 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488700 2025-05-17 11:18:39 2460812.9712847 19.921 0.0815108 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-05-15 11:18:30 - 2025-05-17 10:19:18 2460810.9711806 - 2460812.9300694 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488699 2025-05-17 10:19:18 2460812.9300694 19.7607 0.178213 ABMag g-ZTF P48_ZTF-Cam
488698 2025-05-15 11:18:30 2460810.9711806 19.1934 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
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
256863 2025-05-27 06:17:03 BlackGEM_Bot1 P. Groot,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 16:09:17.639 +09:40:46.07 2025-05-20 02:38:48.000 19.37 BG-q-BlackGem 1 PSN BGEM J160917.63+094046.0 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025koz_atrep_256863_BlackGEM.pdf Finding Chart 2025-05-27 06:17:05 BlackGEM_Bot1
256578 2025-05-25 05:57:31 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 16:09:17.631 +09:40:46.89 2025-05-24 05:55:50.304 18.881 cyan-ATLAS PSN ATLAS25fjw ATLAS N
255634 2025-05-21 08:45:48 GOTO_bot A. Kumar,G. Ramsay,K. Ackley et al. GOTO GOTO 16:09:17.660 +09:40:46.43 2025-05-18 23:48:50.400 19.4 L-GOTO Other GOTO25cun GOTO N
255226 2025-05-17 12:55:37 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 16:09:17.649 +09:40:46.49 2025-05-17 10:19:17.996 19.7607 g-ZTF PSN ZTF25aaqocue ZTF 2025TNSTR1820....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21241 2025-06-06 22:10:44 Nadejda Blagorodnova Mujortova Nadejda Blagorodnova Mujortova BlackGEM SN Ic-BL 0.1 1 Add BlackGEM, CET-3PO Good match to SN 1998bw at 7 days post-peak. 2025TNSCR2126....1M
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
21241 2025-06-02 01:22:07 NOT / ALFOSC 1200 Gerard Garcia-Moreno, Mathias Gort Gerard Garcia-Moreno BlackGEM tns_2025koz_2460828.557028947_NOT_ALFOSC_BlackGEM.txt tns_2025koz_2460828.557028947_NOT_ALFOSC_BlackGEM.fits Object

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