RA/DEC (2000)
20:56:47.260 -18:31:04.49
314.1969169 -18.517914
Type
SN IIn
Redshift
0.03
Discovery ReportClassification Report
Related AstroNotes: 2026-229, 2026-231
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-05-21 10:30:17.997
TNS AT
Y
Public
Y
Discovery Mag
19.9378
Filter
r-ZTF
Reporter/s
Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026plb - 2026-07-24 23:42:00 LT / SPRAT (None)z=
▌Show H at z=vexp= km/s
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▌Show Mg at z=vexp= km/s
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▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
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▌Show Galaxy lines at z=
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z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌ATLAS-MLO_ATLAS-01_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
24425 2026-07-24 23:42:00 LT / SPRAT Amalija Rafaj Škriljevečki, Eduardo Concepcion None tns_2026plb_2026-07-24_23-42-00_LT_SPRAT_None.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2026-06-11 04:37:03 - 2026-06-11 04:37:03 2461202.692405 - 2461202.692405 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
608093 2026-06-11 04:37:03 2461202.692405 19.6 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-06-14 07:01:13 - 2026-06-14 07:01:13 2461205.79251 - 2461205.79251 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592936 2026-06-14 07:01:13 2461205.79251 17.06 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2026-06-14 03:23:39 - 2026-06-14 03:23:39 2461205.641417 - 2461205.641417 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
608094 2026-06-14 03:23:39 2461205.641417 18.27 0.05 ABMag L-GOTO GOTO-N_GOTO-1 180
r-ZTF P48_ZTF-Cam 2026-05-20 10:54:09 - 2026-06-17 09:27:22 2461180.9542708 - 2461208.8940046 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592503 2026-06-17 09:27:22 2461208.8940046 17.379 0.0488115 ABMag r-ZTF P48_ZTF-Cam
592502 2026-05-21 10:30:18 2461181.9377083 19.9378 0.134712 ABMag r-ZTF P48_ZTF-Cam
592501 2026-05-20 10:54:09 2461180.9542708 19.8526 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
cyan-ATLAS ATLAS-MLO_ATLAS-01 2026-06-16 10:33:39 - 2026-06-16 10:33:39 2461207.94003 - 2461207.94003 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592937 2026-06-16 10:33:39 2461207.94003 17.476 0.061 19.26 ABMag cyan-ATLAS ATLAS-MLO_ATLAS-01 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
317510 2026-08-01 17:13:11 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 20:56:47.263 -18:31:04.49 2026-06-14 03:23:38.688 18.27 L-GOTO Other GOTO26hnw GOTO N
309026 2026-06-19 12:28:26 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 20:56:47.257 -18:31:04.59 2026-06-16 10:33:38.592 17.476 cyan-ATLAS PSN ATLAS26hls ATLAS N
308813 2026-06-17 11:27:53 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 20:56:47.260 -18:31:04.49 2026-05-21 10:30:17.997 19.9378 r-ZTF PSN ZTF26abbwmoo ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). 2026TNSTR2576....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
24418 2026-08-05 08:54:48 Amalija Rafaj Škriljevečki Amalija Rafaj Škriljevečki (Graz University of Technology, University of Graz), Eduardo Concepcion (Center for Astrophysics and Cosmology, University of Nova Gorica) None SN IIn 0.03 1 We report the classification of the transient 2026plb/ZTF26abbwmoo (2026TNSTR2576....1R) using spectroscopic data obtained with SPRAT at the Liverpool Telescope on 2026-07-24 at 23:42:00 UTC. Following the analysis done with SNID-SAGE (Stoppa & Smartt, 2026), the spectrum of the transient matches best the sn2013fc template at age 97.0 d and redshift 0.030. In the identification report (#2026-229), the spectrum of the transient was described as featureless. Our follow-up observations show that the spectrum now exhibits prominent, narrow H\alpha and H\beta emission lines, and absorption component on the blue side of H\alpha, characteristic for SNe type IIn spectra (Gutiérrez et al. 2017). The transient currently has the apparent magnitude 17 in g band (ZTF). We encourage further photometric and spectroscopic follow-up. 2026TNSCR3173....1Š
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
24425 2026-07-24 23:42:00 LT / SPRAT Amalija Rafaj Škriljevečki, Eduardo Concepcion None tns_2026plb_2026-07-24_23-42-00_LT_SPRAT_None.ascii Object

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