RA/DEC (2000)
11:39:00.202 -05:42:54.18
174.7508413 -5.71505028007
Type
SLSN-I
Redshift
0.265
Discovery ReportClassification Report
Related AstroNotes: 2026-79
Reporting Group
LAST
Discovering Data Source
LAST
Discovery Date
2026-02-20 21:46:10.848
TNS AT
Y
Public
Y
Discovery Mag
19.52
Filter
Clear-
Reporter/s
R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS), S. Garrappa (WIS), E. O. Ofek (WIS), S. Ben-Ami (WIS), D. Polishook (WIS), O. Yaron (WIS), P. Chen (WIS), A. Krassilchtchikov (WIS), Y. M. Shani (WIS), E. Segre (WIS), A. Gal-Yam (WIS), S. Spitzer (WIS), and K. Rybicki (WIS) on behalf of the LAST Collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026duw - 2026-03-20 00:00:00 VLT-UT1 / FORS2 (OxQUB)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
 ▌LAST_LAST-Cam_Clear
 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_w
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌P48_ZTF-Cam_r
   
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
23324 2026-03-20 00:00:00 VLT-UT1 / FORS2 VLT Staff OxQUB tns_2026duw_2026-03-20_VLT-UT1_FORS2_OxQUB.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-02-20 01:43:36 - 2026-02-20 01:43:36 2461091.57194 - 2461091.57194 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
560444 2026-02-20 01:43:36 2461091.57194 20.487 0.225 20.03 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
Clear- LAST_LAST-Cam 2026-02-11 22:00:32 - 2026-02-20 21:46:11 2461083.41704 - 2461092.40707 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
559859 2026-02-20 21:46:11 2461092.40707 19.52 ABMag Clear- LAST_LAST-Cam 400
559858 2026-02-11 22:00:32 2461083.41704 20.5 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2026-02-18 16:34:59 - 2026-02-21 13:11:37 2461090.190961 - 2461093.049727 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
561527 2026-02-21 13:11:37 2461093.049727 19.21 0.09 ABMag L-GOTO GOTO-S_GOTO-3 180
561526 2026-02-18 16:34:59 2461090.190961 20.3 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
w-P1 PS2_GPC2 2026-03-10 11:52:09 - 2026-03-10 11:52:09 2461109.99455 - 2461109.99455 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572357 2026-03-10 11:52:09 2461109.99455 18.4 0.02 22 ABMag w-P1 PS2_GPC2 45 Robot
cyan-ATLAS ATLAS-STH_ATLAS-03 2026-02-19 00:54:45 - 2026-02-19 00:54:45 2461090.53802 - 2461090.53802 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
560443 2026-02-19 00:54:45 2461090.53802 19.63 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2026-02-14 11:27:57 - 2026-02-23 09:34:30 2461085.9777431 - 2461094.8989583 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
562279 2026-02-23 09:34:30 2461094.8989583 18.6808 0.085648 20.1786 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
562278 2026-02-14 11:27:57 2461085.9777431 20.2647 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
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
298585 2026-04-05 07:39:32 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 11:39:00.202 -05:42:54.18 2026-03-10 11:52:09.120 18.4 w-P1 PSN PS26atf Pan-STARRS N
293342 2026-02-28 19:49:29 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 11:39:00.202 -05:42:54.17 2026-02-23 09:34:29.997 18.6808 r-ZTF PSN ZTF26aahjdpb ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aahjdpb N
292936 2026-02-25 12:16:12 GOTO_bot B. Godson, D. O'Neill, K. Ackley et al. GOTO GOTO 11:39:00.174 -05:42:54.22 2026-02-21 13:11:36.672 19.21 L-GOTO Other GOTO26bmq GOTO N
292406 2026-02-23 09:55:11 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 11:39:00.206 -05:42:54.52 2026-02-20 01:43:35.616 20.487 wide-ATLAS PSN ATLAS26cgb ATLAS N
292127 2026-02-21 01:48:16 LAST_Bot1 R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al. LAST LAST 11:39:00.227 -05:42:53.86 2026-02-20 21:46:10.848 19.52 Clear- PSN LAST 2026TNSTR.727....1K N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23322 2026-03-22 17:47:40 Charlotte Angus C. Angus (QUB) OxQUB SLSN-I 0.265 1 OxQUB Spectrum taken with VLT/FORS on 20/03/2026. Template matches to SNe Ic and SLSNe-I post-maximum light. Redshift measured using host galaxy emission lines in the spectrum. At z=0.265, 2026duw has a current absolute magnitude of M=-21.8. Classification was done using SNID 2026TNSCR1238....1A
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
23324 2026-03-20 00:00:00 VLT-UT1 / FORS2 VLT Staff OxQUB tns_2026duw_2026-03-20_VLT-UT1_FORS2_OxQUB.txt Object

Comments

TNS
System

Sun, 04/05/2026 - 07:39

Object coordinates updated

Object coordinates updated according to AT-report 298585 of Group Pan-STARRS
Previous RA, DEC: 11:39:00.202, -05:42:54.17 (174.75084041538, -5.7150475076923)
Updated RA, DEC: 11:39:00.202, -05:42:54.18 (174.7508413, -5.71505028007)

TNS
System

Sat, 02/28/2026 - 19:49

Object coordinates updated

Object coordinates updated according to AT-report 293342 of Group ZTF
Previous RA, DEC: 11:39:00.206, -05:42:54.52 (174.75086, -5.71514454545)
Updated RA, DEC: 11:39:00.202, -05:42:54.17 (174.75084041538, -5.7150475076923)

TNS
System

Mon, 02/23/2026 - 09:55

Object coordinates updated

Object coordinates updated according to AT-report 292406 of Group ATLAS
Previous RA, DEC: 11:39:00.227, -05:42:53.86 (174.75094604492, -5.7149620056152)
Updated RA, DEC: 11:39:00.206, -05:42:54.52 (174.75086, -5.71514454545)