RA/DEC (2000)
10:33:50.263 -31:00:53.35
158.459429375 -31.014819375
Type
SN Ia-91T-like
Redshift
0.009
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-01-21 14:03:02.016
TNS AT
Y
Public
Y
Discovery Mag
18.11
Filter
L-GOTO
Reporter/s
M. Pursiainen, 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, D. O'Neill, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026ayz - 2026-01-24 02:54:39 NOT / ALFOSC (GOTO)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-3_L
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌ATLAS-STH_ATLAS-03_orange
 ▌Other_Other_Other
   
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
22852 2026-01-24 02:54:39 NOT / ALFOSC Zuri Gray GOTO tns_2026ayz_2026-01-24_02-54-38.886_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2026-01-10 14:05:27 - 2026-01-21 14:03:02 2461051.087115 - 2461062.085442 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552633 2026-01-21 14:03:02 2461062.085442 18.11 0.03 ABMag L-GOTO GOTO-S_GOTO-3 180
552632 2026-01-10 14:05:27 2461051.087115 19.8 ABMag L-GOTO GOTO-S_GOTO-3 90 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-01-22 05:39:40 - 2026-01-22 05:39:40 2461062.73588 - 2461062.73588 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552999 2026-01-22 05:39:40 2461062.73588 17.343 0.037 19.31 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2026-01-20 23:51:56 - 2026-01-20 23:51:56 2461061.4944 - 2461061.4944 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
552998 2026-01-20 23:51:56 2461061.4944 19.16 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
Other- Other_Other 2016-02-10 21:23:04 - 2026-03-13 09:16:34 2457429.39102 - 2461112.8865 18
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
568803 2026-03-13 09:16:34 2461112.8865 15.6 19.6 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
568802 2026-03-13 09:15:22 2461112.88567 15.6 19.1 VegaMag Other- Other_Other 60 Robot MASTER-OAGH
562553 2026-03-01 08:32:56 2461100.8562 15.1 18.4 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
562552 2026-03-01 08:30:43 2461100.85467 15.1 18.3 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
562550 2026-02-28 08:34:27 2461099.85726 15.1 19.1 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
562547 2026-02-28 08:32:16 2461099.85574 15.1 19.1 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
562549 2026-02-28 08:32:16 2461099.85574 15.1 19.1 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
562546 2026-02-28 08:31:04 2461099.85491 15 18.6 VegaMag Other- Other_Other 60 Robot MASTER-OAGH
558066 2026-02-11 08:31:27 2461082.85517 14.1 18.7 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
558065 2026-02-11 08:30:18 2461082.85437 14.1 18.5 VegaMag Other- Other_Other 60 Robot MASTER-OAGH
552785 2026-01-22 11:15:13 2461062.9689 16.9 19 VegaMag Other- Other_Other 120 Robot MASTER-OAGH
552784 2026-01-22 11:14:04 2461062.9681 16.9 18.7 VegaMag Other- Other_Other 60 Robot MASTER-OAGH
552783 2016-02-10 21:23:04 2457429.39102 20.6 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-OAGH
568801 2016-02-10 21:23:04 2457429.39102 20.6 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-OAGH
562551 2016-02-10 21:23:04 2457429.39102 20.6 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-OAGH
562548 2016-02-10 21:23:04 2457429.39102 20.6 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-OAGH
562545 2016-02-10 21:23:04 2457429.39102 20.6 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-OAGH
558064 2016-02-10 21:23:04 2457429.39102 20.6 VegaMag Other- Other_Other 540 Robot [Last non detection] MASTER-OAGH
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
296770 2026-03-20 10:53:18 MASTER A.Kovankin, V.Lipunov, E.Gorbovskoy et al. MASTER MASTER 10:33:50.280 -31:00:53.30 2026-03-13 09:15:21.888 15.6 Other- PSN MASTER OT J103350.28-310053.3 MASTER N
293478 2026-03-02 12:06:44 MASTER P.Balanutsa, V.Lipunov, E.Gorbovskoy et al. MASTER MASTER 10:33:50.280 -31:00:52.80 2026-03-01 08:30:43.488 15.1 Other- PSN MASTER OT J103350.28-310052.8 MASTER N
293477 2026-03-02 12:05:43 MASTER V.Lipunov, E.Gorbovskoy, A.Kuznetsov et al. MASTER MASTER 10:33:50.280 -31:00:53.10 2026-02-28 08:32:15.936 15.1 Other- PSN MASTER OT J103350.28-310053.1 MASTER N
293476 2026-03-02 12:04:45 MASTER O.Gress, V.Lipunov, E.Gorbovskoy et al. MASTER MASTER 10:33:50.270 -31:00:53.20 2026-02-28 08:31:04.224 15 Other- Other MASTER OT J103350.27-310053.2 MASTER transient, unfiltered N
291117 2026-02-13 00:01:15 MASTER Ya.Kechin, V.Lipunov, E.Gorbovskoy et al. MASTER MASTER 10:33:50.260 -31:00:52.80 2026-02-11 08:30:17.568 14.1 Other- PSN MASTER OT J103350.26-310052.8 MASTER N
288495 2026-01-23 01:43:42 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 10:33:50.263 -31:00:53.35 2026-01-22 05:39:40.032 17.343 cyan-ATLAS PSN ATLAS26bae ATLAS N
288346 2026-01-22 11:22:06 MASTER G.Antipov, V.Lipunov, A.Kuznetsov et al. MASTER MASTER 10:33:50.260 -31:00:52.60 2026-01-22 11:14:03.840 16.9 Other- Other MASTER OT J103350.26-310052.6 MASTER CV outburst N
288269 2026-01-21 18:01:27 GOTO_bot M. Pursiainen, K. Ackley, M. Dyer et al. GOTO GOTO 10:33:50.272 -31:00:53.29 2026-01-21 14:03:02.016 18.11 L-GOTO PSN GOTO26th GOTO 2026TNSTR.270....1P N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22851 2026-01-24 10:37:18 Miika Pursiainen M. Pursiainen, P. Charalampopoulos, T. Killestein, K. Ackley, M. J. Dyer, J. Lyman, K. Ulaczyk, S. Belkin, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. P. Breton, L. K. Nuttall, D. Pollacco, J. Casares Vel'azquez, A. Kumar, D. O'Neill on behalf of GOTO collaboration GOTO SN Ia-91T-like 0.009 1 GOTO Good template matches to young Type Ia-91T-like SNe. In absence of clear host galaxy lines, the redshift is based on the template matching and is thus approximate. 2026TNSCR.320....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
22852 2026-01-24 02:54:39 NOT / ALFOSC Zuri Gray GOTO tns_2026ayz_2026-01-24_02-54-38.886_NOT_ALFOSC_GOTO.dat Object

Comments

TNS
System

Fri, 01/23/2026 - 01:43

Object coordinates updated

Object coordinates updated according to AT-report 288495 of Group ATLAS
Previous RA, DEC: 10:33:50.272, -31:00:53.29 (158.459467, -31.014804)
Updated RA, DEC: 10:33:50.263, -31:00:53.35 (158.459429375, -31.014819375)