RA/DEC (2000)
23:07:25.481 +32:22:47.10
346.85617 +32.37975
Type
SN IIP
Redshift
0.022
Discovery ReportClassification Report
Related AstroNotes: 2026-199
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-06-16 13:17:44.736
TNS AT
Y
Public
Y
Discovery Mag
18.744
Filter
orange-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, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), 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), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026pky - 2026-06-20 09:51:38 HET / HET-LRS (TexSNs)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-N_GOTO-2_L
 ▌GOTO-N_GOTO-1_L
 ▌ATLAS-HKO_ATLAS-02_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
24113 2026-06-20 09:51:38 HET / HET-LRS 1500 Zach Vanderbosch, Cassie Crowe Panacea pipeline TexSNs tns_2026pky_2026-06-20_09-51-38_HET_HET-LRS_TexSNs.dat Object Spectrum taken with the Hobby-Eberly Telescope LRS2-Blue spectrograph.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2026-06-19 04:53:55 - 2026-06-19 04:53:55 2461210.704108 - 2461210.704108 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
593022 2026-06-19 04:53:55 2461210.704108 18.47 0.06 ABMag L-GOTO GOTO-N_GOTO-2 180
L-GOTO GOTO-N_GOTO-1 2026-05-21 03:57:54 - 2026-05-21 03:57:54 2461181.665214 - 2461181.665214 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
593021 2026-05-21 03:57:54 2461181.665214 20.4 ABMag L-GOTO GOTO-N_GOTO-1 360 [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-06-15 13:38:23 - 2026-06-16 13:17:45 2461207.06832 - 2461208.05399 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592483 2026-06-16 13:17:45 2461208.05399 18.744 0.119 19.43 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
592482 2026-06-15 13:38:23 2461207.06832 19.42 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 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
309062 2026-06-19 21:51:38 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 23:07:25.435 +32:22:46.52 2026-06-19 04:53:55.104 18.47 L-GOTO Other GOTO26gch GOTO N
308804 2026-06-17 07:10:03 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 23:07:25.481 +32:22:47.10 2026-06-16 13:17:44.736 18.744 orange-ATLAS PSN ATLAS26hix ATLAS 2026TNSTR2563....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
24107 2026-06-22 10:41:59 Jozsef Vinko Jozsef Vinko (Konkoly / UT Austin), J. Craig Wheeler (UT Austin) TexSNs SN IIP 0.022 1 TexSNs Good match with several Type II-P templates at z ~ 0.022 around maximum light. Classification was made by SNID.
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
24113 2026-06-20 09:51:38 HET / HET-LRS 1500 Zach Vanderbosch, Cassie Crowe Panacea pipeline TexSNs tns_2026pky_2026-06-20_09-51-38_HET_HET-LRS_TexSNs.dat Object Spectrum taken with the Hobby-Eberly Telescope LRS2-Blue spectrograph.

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