RA/DEC (2000)
13:30:13.578 +62:30:34.06
202.556576667 +62.50946
Type
SN Ia
Redshift
0.069
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-06-21 23:10:05.376
TNS AT
Y
Public
Y
Discovery Mag
19.359
Filter
wide-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith (QUB), A. Aamer (Arizona), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), T. Moore, A. Rest (STScI), T.-W. Chen (NCU), C. Deasy-Millar (TCD), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026pwl - 2026-06-23 04:40:32 MMT / BINOSPEC (AZTEC)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
 ▌ATLAS-MLO_ATLAS-01_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
24128 2026-06-23 04:40:32 MMT / BINOSPEC 4500 Kali Salmas, Ricardo Ortiz Brian Hsu AZTEC tns_2026pwl_2026-06-23_04-40-32_MMT_BINOSPEC_AZTEC.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-06-21 23:10:05 - 2026-06-21 23:10:05 2461213.46534 - 2461213.46534 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
593823 2026-06-21 23:10:05 2461213.46534 19.359 0.166 19.83 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-06-20 07:50:44 - 2026-06-20 07:50:44 2461211.8269 - 2461211.8269 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
593822 2026-06-20 07:50:44 2461211.8269 19.25 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 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
309616 2026-06-22 08:40:05 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 13:30:13.578 +62:30:34.06 2026-06-21 23:10:05.376 19.359 wide-ATLAS PSN ATLAS26hnv ATLAS 2026TNSTR2656....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
24122 2026-06-23 21:27:56 Brian Hsu B. Hsu (U of Arizona), D. J. Sand (U of Arizona), C. Ransome (U of Arizona), J. Pearson (U of Arizona), Bhagya Subrayan (U of Arizona), Griffin Hosseinzadeh (UCSD), on behalf of AZTEC AZTEC SN Ia 0.069 1 AZTEC We report the classification of AT 2026pwl as a SN Ia based on the optical spectrum obtained on UTC 2026-06-23T04:40:32 using the Binospec spectrograph on the 6.5 m MMT telescope. This target was classified using SNID-SAGE (Blondin & Tonry 2007; Stoppa & Smartt 2026) and provided a best match to SN 1994D at z=0.069.
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
24128 2026-06-23 04:40:32 MMT / BINOSPEC 4500 Kali Salmas, Ricardo Ortiz Brian Hsu AZTEC tns_2026pwl_2026-06-23_04-40-32_MMT_BINOSPEC_AZTEC.ascii Object

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