RA/DEC (2000)
15:55:01.666 +03:56:55.66
238.756941715 +3.94879402921
Type
SN IIn
Redshift
0.1467
Discovery ReportClassification Report
Related AstroNotes: 2026-9
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-04-20 08:29:41.003
TNS AT
Y
Public
Y
Discovery Mag
20.5524
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_2025iek - 2025-08-22 04:22:02 Lick-3m / KAST (UCSC)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

 ▌LAST_LAST-Cam_Clear
 ▌PS2_GPC2_g
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌ATLAS-HKO_ATLAS-02_cyan
 ▌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
21851 2025-08-22 04:22:02 Lick-3m / KAST K. Taggart K.Taggart UCSC tns_2025iek_2025-08-22_04-22-02.43_Lick-3m_KAST_UCSC.flm Object The H-alpha line exhibits a narrow component with a FWHM velocity of approximately 450 km/s and an intermediate-width (or broad) component with a FWHM velocity of roughly 2,450 km/s.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2025-07-16 20:27:57 - 2025-07-21 19:17:22 2460873.35274 - 2460878.30373 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504981 2025-07-21 19:17:22 2460878.30373 20.02 ABMag Clear- LAST_LAST-Cam 400
504980 2025-07-16 20:27:57 2460873.35274 20.74 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
g-P1 PS2_GPC2 2025-04-25 11:56:25 - 2025-04-25 11:56:25 2460790.99751 - 2460790.99751 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484440 2025-04-25 11:56:25 2460790.99751 19.5 0.08 21 ABMag g-P1 PS2_GPC2 27 Robot
r-ZTF P48_ZTF-Cam 2025-04-16 08:00:47 - 2025-04-23 09:57:38 2460781.8338773 - 2460788.9150231 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
483754 2025-04-23 09:57:38 2460788.9150231 19.7584 0.11559 ABMag r-ZTF P48_ZTF-Cam
483752 2025-04-16 08:00:47 2460781.8338773 18.5297 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-04-20 08:29:41 - 2025-04-20 08:29:41 2460785.8539468 - 2460785.8539468 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
483753 2025-04-20 08:29:41 2460785.8539468 20.5524 0.187758 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-21 07:51:24 - 2025-07-21 07:51:24 2460877.82736 - 2460877.82736 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505871 2025-07-21 07:51:24 2460877.82736 19.381 0.175 19.56 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-07-20 07:58:04 - 2025-07-20 07:58:04 2460876.83199 - 2460876.83199 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505870 2025-07-20 07:58:04 2460876.83199 19.59 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
w-P1 PS1_GPC1 2025-05-03 10:22:38 - 2025-05-03 10:22:38 2460798.93238 - 2460798.93238 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502668 2025-05-03 10:22:38 2460798.93238 19.58 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
264212 2025-07-29 10:46:54 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 15:55:01.686 +03:56:55.67 2025-07-21 07:51:23.904 19.381 orange-ATLAS PSN ATLAS25ikm ATLAS N
263744 2025-07-25 20:07:51 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 15:55:01.672 +03:56:55.35 2025-07-21 19:17:22.272 20.02 Clear- PSN LAST N
262579 2025-07-15 00:04:47 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 15:55:01.666 +03:56:55.66 2025-05-03 10:22:37.632 19.58 w-P1 PSN PS25bsp Pan-STARRS N
252800 2025-04-27 15:06:51 YSE_Bot1 D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al. YSE Pan-STARRS 15:55:01.667 +03:56:55.61 2025-04-25 11:56:24.864 19.5 g-P1 PSN PS25bsp Pan-STARRS N
252437 2025-04-23 11:54:42 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 15:55:01.679 +03:56:55.78 2025-04-20 08:29:41.003 20.5524 g-ZTF PSN ZTF25aankyog ZTF 2025TNSTR1507....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
21851 2025-08-23 20:55:41 Kirsty Taggart K. Taggart, K. C. Patra, R. J. Foley (UCSC) UCSC SN IIn 0.1467 1 UCSC 2025TNSCR3348....1T
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
21851 2025-08-22 04:22:02 Lick-3m / KAST K. Taggart K.Taggart UCSC tns_2025iek_2025-08-22_04-22-02.43_Lick-3m_KAST_UCSC.flm Object The H-alpha line exhibits a narrow component with a FWHM velocity of approximately 450 km/s and an intermediate-width (or broad) component with a FWHM velocity of roughly 2,450 km/s.

Comments

TNS
System

Tue, 07/15/2025 - 00:04

Object coordinates updated

Object coordinates updated according to AT-report 262579 of Group Pan-STARRS
Previous RA, DEC: 15:55:01.667, +03:56:55.61 (238.756946566, +3.94878148842)
Updated RA, DEC: 15:55:01.666, +03:56:55.66 (238.756941715, +3.94879402921)

TNS
System

Sun, 04/27/2025 - 15:06

Object coordinates updated

Object coordinates updated according to AT-report 252800 of Group Pan-STARRS
Previous RA, DEC: 15:55:01.679, +03:56:55.78 (238.7569959, +3.9488265)
Updated RA, DEC: 15:55:01.667, +03:56:55.61 (238.756946566, +3.94878148842)