RA/DEC (2000)
21:20:17.548 -17:12:31.95
320.073118512 -17.2088758337
Type
SLSN-I
Redshift
0.22
Related AstroNotes: 2025-256
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-07-19 08:09:14.002
TNS AT
Y
Public
Y
Discovery Mag
20.7891
Filter
r-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

Spectra

 SN_2025sfo - 2025-08-13 04:49:03 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
Show H at z=vexp= km/s
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Show O VI at z=vexp= km/s
Show Na at z=vexp= km/s
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Show Mg II at z=vexp= km/s
Show Si II at z=vexp= km/s
Show S II at z=vexp= km/s
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Show [Ca II] at z=vexp= km/s
Show Fe II at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ATLAS-TDO_ATLAS-05_wide
 LAST_LAST-Cam_Clear
 GOTO-S_GOTO-3_L
 ATLAS-STH_ATLAS-03_orange
 P48_ZTF-Cam_i
 P48_ZTF-Cam_r
 PS1_GPC1_w
   
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
21781 2025-08-13 04:49:03 ESO-NTT / EFOSC2-NTT 900 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, Morgan Fraser ePESSTO+ tns_2025sfo_2025-08-13_04-49-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025sfo_2025-08-13_04-49-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-07-30 01:26:44 - 2025-07-30 01:26:44 2460886.56023 - 2460886.56023 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506197 2025-07-30 01:26:44 2460886.56023 19.81 0.148 20.03 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
Clear- LAST_LAST-Cam 2025-07-17 21:42:04 - 2025-08-30 22:05:50 2460874.40421 - 2460918.42072 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514443 2025-08-30 22:05:50 2460918.42072 18.99 ABMag Clear- LAST_LAST-Cam 400
514442 2025-07-17 21:42:04 2460874.40421 20.52 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-08-12 16:17:37 - 2025-08-16 11:15:22 2460900.178896 - 2460903.969007 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
509433 2025-08-16 11:15:22 2460903.969007 18.06 0.14 ABMag L-GOTO GOTO-S_GOTO-3 135
509432 2025-08-12 16:17:37 2460900.178896 18.4 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2025-07-29 00:34:02 - 2025-07-29 00:34:02 2460885.52363 - 2460885.52363 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506196 2025-07-29 00:34:02 2460885.52363 19.27 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
i-ZTF P48_ZTF-Cam 2025-07-19 07:48:24 - 2025-07-19 07:48:24 2460875.8252778 - 2460875.8252778 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505159 2025-07-19 07:48:24 2460875.8252778 20.1868 ABMag i-ZTF P48_ZTF-Cam [Last non detection]
r-ZTF P48_ZTF-Cam 2025-07-19 08:09:14 - 2025-07-26 07:31:37 2460875.8397454 - 2460882.8136227 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505161 2025-07-26 07:31:37 2460882.8136227 19.7685 0.136378 ABMag r-ZTF P48_ZTF-Cam
505160 2025-07-19 08:09:14 2460875.8397454 20.7891 0.208841 ABMag r-ZTF P48_ZTF-Cam
w-P1 PS1_GPC1 2025-07-25 10:53:46 - 2025-07-25 10:53:46 2460881.954 - 2460881.954 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506951 2025-07-25 10:53:46 2460881.954 19.98 0.06 22 ABMag w-P1 PS1_GPC1 45 Robot
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
268719 2025-08-31 04:15:06 LAST_Bot1 E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al. LAST LAST 21:20:17.594 -17:12:32.49 2025-08-30 22:05:50.208 18.99 Clear- PSN LAST N
266140 2025-08-17 06:08:54 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 21:20:17.530 -17:12:32.51 2025-08-16 11:15:22.464 18.06 L-GOTO Other GOTO25fvc GOTO N
264731 2025-08-02 13:53:47 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 21:20:17.548 -17:12:31.95 2025-07-25 10:53:45.600 19.98 w-P1 PSN PS25frs Pan-STARRS N
264354 2025-07-30 18:14:44 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 21:20:17.537 -17:12:32.28 2025-07-30 01:26:43.872 19.81 wide-ATLAS PSN ATLAS25iol ATLAS N
263830 2025-07-26 10:13:10 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 21:20:17.578 -17:12:32.09 2025-07-19 08:09:14.002 20.7891 r-ZTF PSN ZTF25abcydiy ZTF 2025TNSTR2921....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
21781 2025-08-14 06:37:57 ePESSTOplus_Bot1 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani, Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, Morgan Fraser, E. A. Zimmerman on behalf of ePESSTO+ ePESSTO+ SLSN-I 0.22 1 ePESSTO+ 2025TNSCR3202....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
21781 2025-08-13 04:49:03 ESO-NTT / EFOSC2-NTT 900 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, Morgan Fraser ePESSTO+ tns_2025sfo_2025-08-13_04-49-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025sfo_2025-08-13_04-49-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 264731 of Group Pan-STARRS
Previous RA, DEC: 21:20:17.578, -17:12:32.09 (320.0732426, -17.208914)
Updated RA, DEC: 21:20:17.548, -17:12:31.95 (320.073118512, -17.2088758337)