RA/DEC (2000)
17:48:59.421 +25:29:44.95
267.247588691 +25.4958204784
Type
SLSN-I
Redshift
0.0949
Discovery ReportClassification Report
Related AstroNotes: 2025-250
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-07-23 06:39:49.003
TNS AT
Y
Public
Y
Discovery Mag
19.8408
Filter
g-ZTF
Reporter/s
Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025sei - 2025-08-02 04:53:46 Lick-3m / KAST (None)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-2_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_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
21742 2025-08-02 04:53:46 Lick-3m / KAST 3600 R. Chornock R. Chornock None tns_2025sei_2025-08-02.204_Lick-3m_KAST_None.flm Object Vacuum wavelengths
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-07-14 23:41:26 - 2025-07-29 21:44:36 2460871.487115 - 2460886.40597 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506060 2025-07-29 21:44:36 2460886.40597 17.9 0.03 ABMag L-GOTO GOTO-N_GOTO-2 360
506059 2025-07-14 23:41:26 2460871.487115 19.5 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-07-22 10:27:57 - 2025-07-22 10:27:57 2460878.9360764 - 2460878.9360764 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505044 2025-07-22 10:27:57 2460878.9360764 20.1368 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-07-23 06:39:49 - 2025-07-26 04:34:36 2460879.7776505 - 2460882.6906944 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505046 2025-07-26 04:34:36 2460882.6906944 18.4062 0.0716904 ABMag g-ZTF P48_ZTF-Cam
505045 2025-07-23 06:39:49 2460879.7776505 19.8408 0.126926 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-27 09:47:31 - 2025-07-28 08:28:55 2460883.908 - 2460884.85341 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507836 2025-07-28 08:28:55 2460884.85341 18.106 0.07 19.69 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
507835 2025-07-27 09:47:31 2460883.908 19.55 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
g-P1 PS1_GPC1 2025-08-14 07:53:52 - 2025-08-14 07:53:52 2460901.82907 - 2460901.82907 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
512155 2025-08-14 07:53:52 2460901.82907 18.17 0.04 21 ABMag g-P1 PS1_GPC1 120 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
267583 2025-08-25 08:37:31 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 17:48:59.421 +25:29:44.95 2025-08-14 07:53:51.648 18.17 g-P1 PSN PS25hag Pan-STARRS N
265247 2025-08-08 14:44:35 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 17:48:59.440 +25:29:45.03 2025-07-28 08:28:54.624 18.106 orange-ATLAS PSN ATLAS25jek ATLAS N
264292 2025-07-29 22:32:20 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 17:48:59.420 +25:29:44.80 2025-07-29 21:44:35.808 17.9 L-GOTO Other GOTO25fnl GOTO N
263777 2025-07-26 04:57:39 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 17:48:59.449 +25:29:45.09 2025-07-23 06:39:49.003 19.8408 g-ZTF PSN ZTF22aakyeps ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). 2025TNSTR2922....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21742 2025-08-10 15:16:35 Ryan Chornock R. Chornock, E. Hammerstein (UC Berkeley), X. J. Hall (CMU), R. Stein (UMD), M. Nicholl (QUB), X. Guo (UC Berkeley), on behalf of the ZTF Collaboration None SLSN-I 0.0949 1 TRex High luminosity and strong O II features between 3800 and 4600 Angs (rest frame). 2025TNSCR3139....1C
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
21742 2025-08-02 04:53:46 Lick-3m / KAST 3600 R. Chornock R. Chornock None tns_2025sei_2025-08-02.204_Lick-3m_KAST_None.flm Object Vacuum wavelengths

Comments

TNS
System

Mon, 08/25/2025 - 08:37

Object coordinates updated

Object coordinates updated according to AT-report 267583 of Group Pan-STARRS
Previous RA, DEC: 17:48:59.449, +25:29:45.09 (267.2477054, +25.495857)
Updated RA, DEC: 17:48:59.421, +25:29:44.95 (267.247588691, +25.4958204784)