RA/DEC (2000)
11:23:31.634 -08:39:15.08
170.881808808 -8.65418992652
Type
SN II
Redshift
0.0122
Discovery ReportClassification Report
Related AstroNotes: DRAFT-2394, 2026-25, 2026-28
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2026-02-06 08:05:04.004
TNS AT
Y
Public
Y
Host Name
NGC 3660
Discovery Mag
17.0032
Filter
r-ZTF
Reporter/s
A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, A. Mourao, J. Correa-Orellana, H. Bommireddy, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026cff - 2026-02-08 08:03:19 P60 / SEDM (ZTF)z=
 ▌SN_2026cff - 2026-02-07 08:26:34 ESO-NTT / EFOSC2-NTT (None)z=
 ▌SN_2026cff - 2026-02-06 21:09:12 Lijiang-2.4m / YFOSC (YNTS)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

 ▌PS2_GPC2_w
 ▌ATLAS-STH_ATLAS-03_orange
 ▌GOTO-N_GOTO-1_L
 ▌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
22951 2026-02-08 08:03:19 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2026cff_2026-02-08_08-03-19.067035_P60_SEDM_ZTF.ascii Object
22952 2026-02-07 08:26:34 ESO-NTT / EFOSC2-NTT Thallis Pessi (ESO), Maria Alejandra Lemus (UNAL), Millena Maciel (ON), Madeleine McLeod (UofE), Taisa Oliveira (USP), Manuel Pa None tns_2026cff_2026-02-07_08-26-34_ESO-NTT_EFOSC2-NTT_None.dat Object
22959 2026-02-06 21:09:12 Lijiang-2.4m / YFOSC Luhan Li Xinjie Luo YNTS tns_2026cff_2026-02-06_21-09-12.2_Lijiang-2.4m_YFOSC_YNTS.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2026-04-22 07:14:37 - 2026-04-22 07:14:37 2461152.80182 - 2461152.80182 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577380 2026-04-22 07:14:37 2461152.80182 17.1 0.01 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2026-01-31 22:35:34 - 2026-02-07 01:42:10 2461072.44137 - 2461078.57095 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556350 2026-02-07 01:42:10 2461078.57095 16.895 0.039 18.78 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
556349 2026-01-31 22:35:34 2461072.44137 18.38 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2026-02-01 02:04:46 - 2026-02-08 03:17:46 2461072.586636 - 2461079.637341 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556643 2026-02-08 03:17:46 2461079.637341 16.53 0.01 ABMag L-GOTO GOTO-N_GOTO-1 180
556642 2026-02-01 02:04:46 2461072.586636 19 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2026-02-02 10:41:17 - 2026-02-06 08:05:04 2461073.9453356 - 2461077.8368519 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
556071 2026-02-06 08:05:04 2461077.8368519 17.0032 0.0373777 19.1777 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
556070 2026-02-02 10:41:17 2461073.9453356 18.9768 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
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
301191 2026-04-23 20:38:03 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 11:23:31.634 -08:39:15.08 2026-04-22 07:14:37.248 17.1 w-P1 PSN PS26bco Pan-STARRS N
290329 2026-02-08 12:55:21 GOTO_bot G. Ramsay, K. Ackley, M. Dyer et al. GOTO GOTO 11:23:31.642 -08:39:15.09 2026-02-08 03:17:46.176 16.53 L-GOTO Other GOTO26anl GOTO N
290201 2026-02-07 16:35:56 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 11:23:31.638 -08:39:15.21 2026-02-07 01:42:10.080 16.895 orange-ATLAS PSN ATLAS26bkl ATLAS N
290078 2026-02-06 12:39:17 ALeRCE A. Munoz-Arancibia, F.E. Bauer, G. Pignata et al. ALeRCE ZTF 11:23:31.644 -08:39:15.02 2026-02-06 08:05:04.004 17.0032 r-ZTF PSN NGC 3660 ZTF26aaffpvx ZTF Early SN candidate (r-rise > 0.51+-0.01 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF26aaffpvx 2026TNSTR.497....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22958 2026-02-09 13:24:30 Luhan Li Bo Wang, Luhan Li, Xinjie Luo, Shiyang Dong, Dongdong Liu (YNAO) YNTS SN II 1 YNTS 2026TNSCR.566....1W
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
22959 2026-02-06 21:09:12 Lijiang-2.4m / YFOSC Luhan Li Xinjie Luo YNTS tns_2026cff_2026-02-06_21-09-12.2_Lijiang-2.4m_YFOSC_YNTS.dat Object
22951 2026-02-09 09:28:24 Thallis Pessi Thallis Pessi (ESO), Maria Alejandra Lemus (UNAL), Millena Maciel (ON), Madeleine McLeod (UofE), Taisa Oliveira (USP), Manuel Pavez (PUC) on behalf of the ESO La Silla Observing School 2026 None SN II 0.0122 1 2026TNSCR.565....1P
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
22952 2026-02-07 08:26:34 ESO-NTT / EFOSC2-NTT Thallis Pessi (ESO), Maria Alejandra Lemus (UNAL), Millena Maciel (ON), Madeleine McLeod (UofE), Taisa Oliveira (USP), Manuel Pa None tns_2026cff_2026-02-07_08-26-34_ESO-NTT_EFOSC2-NTT_None.dat Object
22950 2026-02-09 09:23:08 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN II 0.01228 1 ZTF 2026TNSCR.568....1S
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
22951 2026-02-08 08:03:19 P60 / SEDM 2160 SEDmRobot auto ZTF tns_2026cff_2026-02-08_08-03-19.067035_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Thu, 04/23/2026 - 20:38

Object coordinates updated

Object coordinates updated according to AT-report 301191 of Group Pan-STARRS
Previous RA, DEC: 11:23:31.644, -08:39:15.02 (170.8818494, -8.6541726)
Updated RA, DEC: 11:23:31.634, -08:39:15.08 (170.881808808, -8.65418992652)