RA/DEC (2000)
19:37:11.200 -44:20:46.81
294.296665714 -44.3463357143
Type
SN II
Redshift
0.02
Discovery ReportClassification Report
Related AstroNotes: 2026-136
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-05-09 17:04:22.368
TNS AT
Y
Public
Y
Discovery Mag
18.81
Filter
L-GOTO
Reporter/s
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026mfl - 2026-05-15 08:10:04 ESO-NTT / EFOSC2-NTT (ePESSTO+)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-S_GOTO-4_L
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌ATLAS-HKO_ATLAS-02_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
23719 2026-05-15 08:10:04 ESO-NTT / EFOSC2-NTT 900 J. Khaulsay, J. Quirola-Vasquez C. Aster ePESSTO+ tns_2026mfl_2026-05-15_08-10-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026mfl_2026-05-15_08-10-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-04-27 18:02:52 - 2026-05-09 17:04:22 2461158.251991 - 2461170.211367 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
581593 2026-05-09 17:04:22 2461170.211367 18.81 0.09 ABMag L-GOTO GOTO-S_GOTO-4 180
581592 2026-04-27 18:02:52 2461158.251991 20 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-05-13 07:05:20 - 2026-05-13 07:05:20 2461173.79537 - 2461173.79537 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
582305 2026-05-13 07:05:20 2461173.79537 18.371 0.089 19.65 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-05-08 14:47:03 - 2026-05-08 14:47:03 2461169.11601 - 2461169.11601 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
582304 2026-05-08 14:47:03 2461169.11601 16.1 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 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
303615 2026-05-14 09:17:46 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 19:37:11.200 -44:20:46.81 2026-05-13 07:05:19.968 18.371 cyan-ATLAS PSN ATLAS26fnw ATLAS N
303295 2026-05-11 17:20:08 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 19:37:11.221 -44:20:46.50 2026-05-09 17:04:22.368 18.81 L-GOTO Other GOTO26epb GOTO 2026TNSTR2042....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23716 2026-05-15 15:25:29 ePESSTOplus_Bot1 J. Khaulsay, J. Quirola-Vasquez, C. Aster, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN II 0.02 1 ePESSTO+ 2026TNSCR2120....1K
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
23719 2026-05-15 08:10:04 ESO-NTT / EFOSC2-NTT 900 J. Khaulsay, J. Quirola-Vasquez C. Aster ePESSTO+ tns_2026mfl_2026-05-15_08-10-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026mfl_2026-05-15_08-10-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Thu, 05/14/2026 - 09:17

Object coordinates updated

Object coordinates updated according to AT-report 303615 of Group ATLAS
Previous RA, DEC: 19:37:11.221, -44:20:46.50 (294.296753, -44.346251)
Updated RA, DEC: 19:37:11.200, -44:20:46.81 (294.296665714, -44.3463357143)