RA/DEC (2000)
14:21:41.050 -29:53:17.15
215.42104087 -29.8880978261
Type
SN Ia
Redshift
0.056
Discovery ReportClassification Report
Related AstroNotes: 2026-146
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-05-06 13:18:02.880
TNS AT
Y
Public
Y
Discovery Mag
17.86
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_2026lmm - 2026-05-19 00:00:00 Gemini-S / GMOS-S (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-HKO_ATLAS-02_orange
 ▌ATLAS-HKO_ATLAS-02_cyan
   
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
23791 2026-05-19 00:00:00 Gemini-S / GMOS-S Gemini None tns_2026lmm_2026-05-19_Gemini-S_GMOS-S_None.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2026-05-06 13:18:03 - 2026-05-06 13:18:03 2461167.054204 - 2461167.054204 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579860 2026-05-06 13:18:03 2461167.054204 17.86 0.04 ABMag L-GOTO GOTO-S_GOTO-4 180
L-GOTO GOTO-S_GOTO-3 2026-04-28 11:30:34 - 2026-04-28 11:30:34 2461158.979557 - 2461158.979557 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
579859 2026-04-28 11:30:34 2461158.979557 19.3 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-05-07 10:41:45 - 2026-05-07 10:41:45 2461167.94566 - 2461167.94566 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
580542 2026-05-07 10:41:45 2461167.94566 19 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2026-05-08 09:58:56 - 2026-05-08 09:58:56 2461168.91593 - 2461168.91593 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
580543 2026-05-08 09:58:56 2461168.91593 17.679 0.083 19.1 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 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
302763 2026-05-09 10:11:02 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 14:21:41.050 -29:53:17.15 2026-05-08 09:58:56.352 17.679 cyan-ATLAS PSN ATLAS26fhd ATLAS N
302477 2026-05-06 14:02:33 GOTO_bot M. Pursiainen, K. Ackley, M. Dyer et al. GOTO GOTO 14:21:41.001 -29:53:17.80 2026-05-06 13:18:02.880 17.86 L-GOTO PSN GOTO26eif GOTO 2026TNSTR1957....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
23787 2026-05-20 16:14:50 Priscila Pessi A. Cikota (NOIRLab/Gemini South), P. Pessi (NCBJ), V. Firpo (NOIRLab/Gemini South), F. Gran (NOIRLab/Gemini South), L. Magill (NOIRLab/Gemini South), K. Silva (NOIRLab/Gemini South), P. Candia (NOIRLab/Gemini South), R. Ruiz-Carmona (NOIRLab/Gemini South), S. Panda (NOIRLab/Gemini South), J. Font-Serra (NOIRLab/Gemini South), R. Angeloni (NOIRLab/Gemini South), V. Kalari (NOIRLab/Gemini South), C. Rodriguez (NOIRLab/Gemini South), J.-E. Heo (NOIRLab/Gemini South), E. Sabbi (NOIRLab), T. Ahumada (NOIRLab/ SOAR), R. Cartier (University of Antofagasta), S. Cikota (CAHA) None SN Ia 0.056 1 2026TNSCR2202....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
23791 2026-05-19 00:00:00 Gemini-S / GMOS-S Gemini None tns_2026lmm_2026-05-19_Gemini-S_GMOS-S_None.txt Object

Comments

TNS
System

Sat, 05/09/2026 - 10:11

Object coordinates updated

Object coordinates updated according to AT-report 302763 of Group ATLAS
Previous RA, DEC: 14:21:41.001, -29:53:17.80 (215.420837, -29.888277)
Updated RA, DEC: 14:21:41.050, -29:53:17.15 (215.42104087, -29.8880978261)