RA/DEC (2000)
21:19:05.321 +36:52:07.75
319.7721729 +36.8688206
Type
SN IIn
Redshift
0.058
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-04-23 13:35:45.600
TNS AT
Y
Public
Y
Discovery Mag
19.059
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_2026kor - 2026-05-23 10:29:37 P60 / SEDM (ZTF)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
 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_r
 ▌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
23849 2026-05-23 10:29:37 P60 / SEDM 2700 SEDmRobot ZTF tns_2026kor_2026-05-23_10-29-37.080840_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-04-15 05:31:31 - 2026-04-15 05:31:31 2461145.73022 - 2461145.73022 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577611 2026-04-15 05:31:31 2461145.73022 19.72 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-12-04 19:55:47 - 2026-05-17 05:03:36 2461014.330406 - 2461177.710827 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
583213 2026-05-17 05:03:36 2461177.710827 18.83 0.09 ABMag L-GOTO GOTO-N_GOTO-2 180
583212 2025-12-04 19:55:47 2461014.330406 19.1 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2026-04-07 12:04:31 - 2026-04-24 11:40:50 2461138.0031366 - 2461154.9866898 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577690 2026-04-24 11:40:50 2461154.9866898 19.0568 0.0946805 ABMag r-ZTF P48_ZTF-Cam
577689 2026-04-18 10:44:24 2461148.9475 19.599 0.0855978 ABMag r-ZTF P48_ZTF-Cam
577688 2026-04-07 12:04:31 2461138.0031366 19.9296 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-04-23 13:35:46 - 2026-04-23 13:35:46 2461154.0665 - 2461154.0665 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577612 2026-04-23 13:35:46 2461154.0665 19.059 0.17 19.27 ABMag orange-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
304060 2026-05-17 09:50:50 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 21:19:05.330 +36:52:07.44 2026-05-17 05:03:35.712 18.83 L-GOTO Other GOTO26etp GOTO N
301342 2026-04-24 13:00:16 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 21:19:05.321 +36:52:07.75 2026-04-18 10:44:23.999 19.599 r-ZTF PSN ZTF26aatgqsc ZTF N
301303 2026-04-24 08:46:53 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 21:19:05.334 +36:52:07.59 2026-04-23 13:35:45.600 19.059 orange-ATLAS PSN ATLAS26etu ATLAS 2026TNSTR1798....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
23845 2026-05-26 20:31:30 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN IIn 0.058 1 ZTF 2026TNSCR2296....1S
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
23849 2026-05-23 10:29:37 P60 / SEDM 2700 SEDmRobot ZTF tns_2026kor_2026-05-23_10-29-37.080840_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Fri, 04/24/2026 - 13:00

Object coordinates updated

Object coordinates updated according to AT-report 301342 of Group ZTF
Previous RA, DEC: 21:19:05.334, +36:52:07.59 (319.77222375, +36.868775)
Updated RA, DEC: 21:19:05.321, +36:52:07.75 (319.7721729, +36.8688206)