RA/DEC (2000)
12:34:18.898 +06:28:26.99
188.5787428 +6.4741652
Type
Impostor-SN
Redshift
0.0067
Discovery ReportClassification Report
Related AstroNotes: 2026-116
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-04-09 04:56:01.999
TNS AT
Y
Public
Y
Discovery Mag
19.8456
Filter
r-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2026kqq - 2026-04-26 03:35:24 Gemini-S / GMOS-S (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

 ▌P48_ZTF-Cam_r
   
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
23565 2026-04-26 03:35:24 Gemini-S / GMOS-S Gemini ZTF tns_2026kqq_2026-04-26_03-35-24_Gemini-S_GMOS-S_ZTF.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-ZTF P48_ZTF-Cam 2026-03-30 08:45:54 - 2026-04-25 06:19:15 2461129.8652083 - 2461155.7633681 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577758 2026-04-25 06:19:15 2461155.7633681 18.6574 0.121493 ABMag r-ZTF P48_ZTF-Cam
577757 2026-04-09 04:56:02 2461139.7055787 19.8456 0.148315 ABMag r-ZTF P48_ZTF-Cam
577756 2026-03-30 08:45:54 2461129.8652083 19.5017 ABMag r-ZTF P48_ZTF-Cam [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
301380 2026-04-25 06:40:05 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 12:34:18.898 +06:28:26.99 2026-04-09 04:56:01.999 19.8456 r-ZTF PSN ZTF26aaufnkd ZTF 2026TNSTR1828....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23562 2026-04-27 16:27:03 Wynn Jacobson-Galan Wynn Jacobson-Galan ZTF Impostor-SN 0.0067 1 ZTF Possible SN precursor or LBV outburst with hydrogen emission lines extending to ~1500 km/s as well as absorption profiles extending to higher velocities (~3500 km/s). 2026TNSCR1849....1J
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
23565 2026-04-26 03:35:24 Gemini-S / GMOS-S Gemini ZTF tns_2026kqq_2026-04-26_03-35-24_Gemini-S_GMOS-S_ZTF.txt Object

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