RA/DEC (2000)
21:22:31.167 -36:40:53.61
320.62986429081 -36.681557234501
Type
SN Ic
Redshift
0.009
Discovery ReportClassification Report
Related AstroNotes: 2026-273
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-08-20 12:56:28.608
TNS AT
Y
Public
Y
Host Name
ESO402-026
Comments
[Object cross-matched with ESO402-026]
Discovery Mag
16.87
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_2026ziq - 2026-09-01 21:39:40 Lesedi / Mookodi (ATLAS)z=
 ▌SN_2026ziq - 2026-09-01 21:39:40 Lesedi / Mookodi (ATLAS)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
z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-S_GOTO-4_L
 ▌ATLAS-STH_ATLAS-03_orange
 ▌PS1_GPC1_w
   
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
24760 2026-09-01 21:39:40 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Mookodi bot ATLAS tns_2026ziq_2026-09-01_21-39-40_Lesedi_Mookodi_ATLAS_0.txt Object The classification target was automatically sent for follow-up by the Virtual Research Assistant (Stevance et al. 2025). Observations were programatically triggered using the ATLAS API Client (Stevance et al. 2026) and the SAAO Intelligent Observatory framework (Erasmus et al. 2024, Erasmus et al. 2025)
24633 2026-09-01 21:39:40 Lesedi / Mookodi N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Mookodi Bot ATLAS tns_2026ziq_2026-09-01_21-39-40_Lesedi_Mookodi_ATLAS.txt Object The classification target was automatically sent for follow-up by the Virtual Research Assistant (Stevance et al. 2025). Observations were programatically triggered using the ATLAS API Client (Stevance et al. 2026) and the SAAO Intelligent Observatory framework (Erasmus et al. 2024, Erasmus et al. 2025)
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-08-02 14:18:01 - 2026-08-20 12:56:29 2461255.09585 - 2461273.039219 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
613772 2026-08-20 12:56:29 2461273.039219 16.87 0.02 ABMag L-GOTO GOTO-S_GOTO-4 180
613771 2026-08-02 14:18:01 2461255.09585 19.7 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2026-08-15 23:41:10 - 2026-08-18 22:22:49 2461268.48692 - 2461271.43251 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
615138 2026-08-18 22:22:49 2461271.43251 16.49 0.036 19.65 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
615137 2026-08-15 23:41:10 2461268.48692 18.48 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
w-P1 PS1_GPC1 2026-08-09 10:11:43 - 2026-08-09 10:11:43 2461261.9248 - 2461261.9248 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
615136 2026-08-09 10:11:43 2461261.9248 17.94 0.04 22 ABMag w-P1 PS1_GPC1 45 Robot
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
321610 2026-08-29 15:47:48 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 21:22:31.172 -36:40:53.07 2026-08-18 22:22:48.864 16.49 orange-ATLAS PSN ATLAS26kpk ATLAS N
321609 2026-08-29 15:47:42 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 21:22:31.167 -36:40:53.61 2026-08-09 10:11:42.720 17.94 w-P1 PSN PS26hkt Pan-STARRS N
320904 2026-08-20 14:25:00 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 21:22:31.171 -36:40:53.45 2026-08-20 12:56:28.608 16.87 L-GOTO Other GOTO26iic GOTO 2026TNSTR3396....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
24752 2026-09-23 10:48:29 ATLAS_Class_Bot S. de Wet and H. F. Stevance on behalf of ATLAS and SAAO IO ATLAS SN Ic 0.009 1 ATLAS After masking host lines, SNID-SAGE [1] finds matches with Ic-norm spectra at various phases. Spectrum is likely strongly reddened. The redshift is set to the value on NED. [1] https://ui.adsabs.harvard.edu/abs/2026MNRAS.549g1066S/abstract 2026TNSCR3855....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
24760 2026-09-01 21:39:40 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Mookodi bot ATLAS tns_2026ziq_2026-09-01_21-39-40_Lesedi_Mookodi_ATLAS_0.txt Object The classification target was automatically sent for follow-up by the Virtual Research Assistant (Stevance et al. 2025). Observations were programatically triggered using the ATLAS API Client (Stevance et al. 2026) and the SAAO Intelligent Observatory framework (Erasmus et al. 2024, Erasmus et al. 2025)
24625 2026-09-04 12:47:21 ATLAS_Class_Bot S. de Wet and H. F. Stevance on behalf of ATLAS and SAAO IO ATLAS SN IIn-pec 0.009 1 ATLAS Classified as IIn pec using SNID-Sage. 2013fc nearest match 2026TNSCR3578....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
24633 2026-09-01 21:39:40 Lesedi / Mookodi N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Mookodi Bot ATLAS tns_2026ziq_2026-09-01_21-39-40_Lesedi_Mookodi_ATLAS.txt Object The classification target was automatically sent for follow-up by the Virtual Research Assistant (Stevance et al. 2025). Observations were programatically triggered using the ATLAS API Client (Stevance et al. 2026) and the SAAO Intelligent Observatory framework (Erasmus et al. 2024, Erasmus et al. 2025)

Comments

TNS
System

Sat, 08/29/2026 - 15:47

Object coordinates updated

Object coordinates updated according to AT-report 321609 of Group Pan-STARRS
Previous RA, DEC: 21:22:31.167, -36:40:53.61 (320.62986429081, -36.681557234501)
Updated RA, DEC: 21:22:31.167, -36:40:53.61 (320.62986429081, -36.681557234501)

TNS
System

Sat, 08/29/2026 - 15:47

Object coordinates updated

Object coordinates updated according to AT-report 321609 of Group Pan-STARRS
Previous RA, DEC: 21:22:31.171, -36:40:53.45 (320.62988, -36.681513)
Updated RA, DEC: 21:22:31.167, -36:40:53.61 (320.62986429081, -36.681557234501)