RA/DEC (2000)
12:12:05.236 -28:52:18.16
183.021817857 -28.87171
Type
SN Ia
Redshift
0.086
Discovery ReportClassification Report
Related AstroNotes: 2026-30
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-01-20 17:31:32.736
TNS AT
Y
Public
Y
Discovery Mag
19.26
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_2026avc - 2026-02-10 04:42:56 ESO-NTT / EFOSC2-NTT (None)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
 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-STH_ATLAS-03_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
22970 2026-02-10 04:42:56 ESO-NTT / EFOSC2-NTT T. Pessi (ESO), M. A. Lemus (UNAL), M. Maciel (ON), M. McLeod (UofE), T. Oliveira (USP), M. Pavez (PUC) None tns_2026avc_2026-02-10_04-42-56_ESO-NTT_EFOSC2-NTT_None.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-01-20 17:31:33 - 2026-01-20 17:31:33 2461061.230242 - 2461061.230242 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552172 2026-01-20 17:31:33 2461061.230242 19.26 0.09 ABMag L-GOTO GOTO-S_GOTO-4 180
L-GOTO GOTO-S_GOTO-3 2026-01-07 15:36:33 - 2026-01-07 15:36:33 2461048.150378 - 2461048.150378 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552171 2026-01-07 15:36:33 2461048.150378 19.4 ABMag L-GOTO GOTO-S_GOTO-3 135 [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2026-01-24 00:53:53 - 2026-01-27 00:00:14 2461064.53742 - 2461067.50016 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
554434 2026-01-27 00:00:14 2461067.50016 18.975 0.153 19.47 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
554433 2026-01-24 00:53:53 2461064.53742 19.59 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 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
289242 2026-01-28 17:16:20 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 12:12:05.236 -28:52:18.16 2026-01-27 00:00:13.824 18.975 orange-ATLAS PSN ATLAS26beo ATLAS N
288100 2026-01-20 20:19:49 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 12:12:05.280 -28:52:17.14 2026-01-20 17:31:32.736 19.26 L-GOTO Other GOTO26qu GOTO 2026TNSTR.244....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
22969 2026-02-11 20:53:19 Thallis Pessi Thallis Pessi None SN Ia 0.086 1 Redshift derived from the SN spectrum. 2026TNSCR.596....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
22970 2026-02-10 04:42:56 ESO-NTT / EFOSC2-NTT T. Pessi (ESO), M. A. Lemus (UNAL), M. Maciel (ON), M. McLeod (UofE), T. Oliveira (USP), M. Pavez (PUC) None tns_2026avc_2026-02-10_04-42-56_ESO-NTT_EFOSC2-NTT_None.dat Object

Comments

TNS
System

Wed, 01/28/2026 - 17:16

Object coordinates updated

Object coordinates updated according to AT-report 289242 of Group ATLAS
Previous RA, DEC: 12:12:05.280, -28:52:17.14 (183.022, -28.871428)
Updated RA, DEC: 12:12:05.236, -28:52:18.16 (183.021817857, -28.87171)