RA/DEC (2000)
13:29:25.353 +78:48:26.72
202.3556384 +78.8074224
Type
SN IIP
Redshift
0.023
Discovery ReportClassification Report
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-05-10 07:25:04.002
TNS AT
Y
Public
Y
Discovery Mag
19.3016
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_2026lwb - 2026-05-31 08:48:52 P60 / SEDM (ZTF)z=
 ▌SN_2026lwb - 2026-05-29 02:32:18 LT / SPRAT (CET-3PO)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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
   
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
23884 2026-05-31 08:48:52 P60 / SEDM 2700 SEDmRobot ZTF tns_2026lwb_2026-05-31_08-48-52.003603_P60_SEDM_ZTF.ascii Object
23887 2026-05-29 02:32:18 LT / SPRAT 1450 David Jones Nadia Blagorodnova CET-3PO tns_2026lwb_2026-05-29_02-32-18_LT_SPRAT_CET-3PO.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-05-11 00:07:42 - 2026-05-11 00:07:42 2461171.50535 - 2461171.50535 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
581242 2026-05-11 00:07:42 2461171.50535 18.351 0.074 19.51 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
r-ZTF P48_ZTF-Cam 2026-05-08 09:58:03 - 2026-05-10 09:48:23 2461168.9153125 - 2461170.9085995 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
580890 2026-05-10 09:48:23 2461170.9085995 19.1875 0.098528 ABMag r-ZTF P48_ZTF-Cam
580888 2026-05-08 09:58:03 2461168.9153125 20.1348 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-05-10 07:25:04 - 2026-05-10 07:25:04 2461170.8090741 - 2461170.8090741 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
580889 2026-05-10 07:25:04 2461170.8090741 19.3016 0.122615 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-05-10 11:26:34 - 2026-05-10 11:26:34 2461170.97678 - 2461170.97678 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
581241 2026-05-10 11:26:34 2461170.97678 19.16 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [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
303109 2026-05-11 09:18:43 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 13:29:25.322 +78:48:25.80 2026-05-11 00:07:42.240 18.351 wide-ATLAS PSN ATLAS26fji ATLAS N
302920 2026-05-10 11:52:48 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 13:29:25.353 +78:48:26.72 2026-05-10 07:25:04.002 19.3016 g-ZTF PSN ZTF26aavrcwo ZTF 2026TNSTR2033....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
23883 2026-06-01 07:48:53 Hugo Tranin Hugo Tranin (ICCUB), Nadejda Blagorodnova (UB), David Jones (IAC), Marco A. Gómez-Muñoz, Gerard García, Grace Katusiime, Maxime Wavasseur (ICCUB) CET-3PO SN IIP 0.023 1 1 CET-3PO Classified with SNID SAGE as SN II-P, with high confidence. HσLAP-CCC=1.45 Redshift: 0.02379 ± 0.0016 (consistent with the photometric redshifts of the host LEDA 3086060)
Related files
File Comments Last Modified (UT) Modified By
tns_2026lwb_atrep_23883_CET-3PO.JPG 2026-06-01 07:48:53 Hugo Tranin
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
23887 2026-05-29 02:32:18 LT / SPRAT 1450 David Jones Nadia Blagorodnova CET-3PO tns_2026lwb_2026-05-29_02-32-18_LT_SPRAT_CET-3PO.txt Object
23880 2026-06-01 03:28:29 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN II 0.023 1 ZTF
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
23884 2026-05-31 08:48:52 P60 / SEDM 2700 SEDmRobot ZTF tns_2026lwb_2026-05-31_08-48-52.003603_P60_SEDM_ZTF.ascii Object

Comments