RA/DEC (2000)
20:43:21.455 -11:49:21.10
310.8393975 -11.8225275
Type
SN IIn
Redshift
0.054
Discovery ReportClassification Report
Related AstroNotes: 2026-121
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-04-25 18:43:20.640
TNS AT
Y
Public
Y
Discovery Mag
19.35
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_2026kut - 2026-05-04 07:52:03 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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-S_GOTO-4_L
 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_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
23625 2026-05-04 07:52:03 ESO-NTT / EFOSC2-NTT 900 Camila Cárdenas, Jasvinderjit Khaulsay Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, Chen-Yen Hsu, Khoa Ngo, Thanh Ho ePESSTO+ tns_2026kut_2026-05-04_07-52-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026kut_2026-05-04_07-52-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-04-27 04:49:52 - 2026-04-27 04:49:52 2461157.7013 - 2461157.7013 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578731 2026-04-27 04:49:52 2461157.7013 18.693 0.081 19.8 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-S_GOTO-4 2026-04-20 18:27:00 - 2026-04-20 18:27:00 2461151.268752 - 2461151.268752 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578140 2026-04-20 18:27:00 2461151.268752 20 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2026-04-25 18:43:21 - 2026-04-25 18:43:21 2461156.280096 - 2461156.280096 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578141 2026-04-25 18:43:21 2461156.280096 19.35 0.11 ABMag L-GOTO GOTO-S_GOTO-3 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-04-26 09:35:02 - 2026-04-26 09:35:02 2461156.89933 - 2461156.89933 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
578730 2026-04-26 09:35:02 2461156.89933 19.09 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 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
301894 2026-04-28 19:59:59 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 20:43:21.455 -11:49:21.10 2026-04-27 04:49:52.320 18.693 wide-ATLAS PSN ATLAS26eyc ATLAS N
301572 2026-04-26 12:42:16 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 20:43:21.482 -11:49:21.18 2026-04-25 18:43:20.640 19.35 L-GOTO Other GOTO26dyj GOTO 2026TNSTR1832....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
23622 2026-05-04 17:05:01 ePESSTOplus_Bot1 Camila Cárdenas, Jasvinderjit Khaulsay, Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, Chen-Yen Hsu, Khoa Ngo, Thanh Ho, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN IIn 0.054 1 ePESSTO+ 2026TNSCR1935....1C
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
23625 2026-05-04 07:52:03 ESO-NTT / EFOSC2-NTT 900 Camila Cárdenas, Jasvinderjit Khaulsay Aiswarya Sankar.K, Anirban Dutta, Amar Aryan, Ting-Wan Chen, Chen-Yen Hsu, Khoa Ngo, Thanh Ho ePESSTO+ tns_2026kut_2026-05-04_07-52-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2026kut_2026-05-04_07-52-03_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Tue, 04/28/2026 - 19:59

Object coordinates updated

Object coordinates updated according to AT-report 301894 of Group ATLAS
Previous RA, DEC: 20:43:21.482, -11:49:21.18 (310.839507, -11.822549)
Updated RA, DEC: 20:43:21.455, -11:49:21.10 (310.8393975, -11.8225275)