RA/DEC (2000)
21:46:05.755 -08:58:40.30
326.5239772 -8.9778613
Type
TDE
Redshift
0.081
Discovery ReportClassification Report
Related AstroNotes: 2026-238
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-06-03 09:06:16.004
TNS AT
Y
Public
Y
Discovery Mag
19.3089
Filter
r-ZTF
Reporter/s
Daniel Perley (LJMU), Christoffer Fremling (Caltech), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌TDE_2026pag - 2026-06-20 04:26:20 NOT / ALFOSC (None)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
z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-S_GOTO-3_L
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌P48_ZTF-Cam_i
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
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
24098 2026-06-20 04:26:20 NOT / ALFOSC 2100 Astrid Lind Bouquin Panos Charalampopoulos None tns_2026pag_2026-06-20_04-26-19.533_NOT_ALFOSC_None.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-06-14 02:57:28 - 2026-06-14 02:57:28 2461205.62324 - 2461205.62324 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592232 2026-06-14 02:57:28 2461205.62324 19.09 0.096 20.05 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-S_GOTO-3 2026-05-05 19:02:15 - 2026-05-05 19:02:15 2461166.293234 - 2461166.293234 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592882 2026-05-05 19:02:15 2461166.293234 19.8 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2026-06-11 04:17:21 - 2026-06-11 04:17:21 2461202.678707 - 2461202.678707 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592883 2026-06-11 04:17:21 2461202.678707 19.19 0.18 ABMag L-GOTO GOTO-N_GOTO-2 135
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-06-13 07:04:35 - 2026-06-13 07:04:35 2461204.79485 - 2461204.79485 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
592231 2026-06-13 07:04:35 2461204.79485 17.94 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
i-ZTF P48_ZTF-Cam 2026-06-01 10:59:58 - 2026-06-01 10:59:58 2461192.9583102 - 2461192.9583102 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
591309 2026-06-01 10:59:58 2461192.9583102 19.4143 ABMag i-ZTF P48_ZTF-Cam [Last non detection]
r-ZTF P48_ZTF-Cam 2026-06-03 09:06:16 - 2026-06-03 09:06:16 2461194.8793519 - 2461194.8793519 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
591310 2026-06-03 09:06:16 2461194.8793519 19.3089 0.159811 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2026-06-12 10:12:59 - 2026-06-12 10:12:59 2461203.9256829 - 2461203.9256829 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
591311 2026-06-12 10:12:59 2461203.9256829 19.0379 0.0889221 ABMag g-ZTF P48_ZTF-Cam
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
309000 2026-06-19 08:56:59 GOTO_bot P. Charalampopoulos, K. Ackley, M. Dyer et al. GOTO GOTO 21:46:05.771 -08:58:40.12 2026-06-11 04:17:20.544 19.19 L-GOTO Other GOTO26gby GOTO N
308686 2026-06-16 10:45:12 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 21:46:05.768 -08:58:40.15 2026-06-14 02:57:27.936 19.09 wide-ATLAS PSN ATLAS26hfu ATLAS N
308232 2026-06-12 16:17:38 Fritz Daniel Perley (LJMU), Christoffer Fremling (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 21:46:05.755 -08:58:40.30 2026-06-03 09:06:16.004 19.3089 r-ZTF PSN ZTF22aaqqapy ZTF 2026TNSTR2476....1P N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
24092 2026-06-20 12:47:33 Panos Charalampopoulos Panos Charalampopoulos (ICE-CSIC) None TDE 0.081 1 3 We report the tentative classification of AT2026pag as a Tidal Disruption Event (TDE) based on an optical spectrum obtained with the Nordic Optical Telescope on 2026-06-19 (i.e., MJD 61211.19). At a redshift of ~ 0.081, we identify NaI D and Halpha. We detect broad Halpha, potentially HeI 5876 and a blend of broad Hbeta and HeII 4686. Comparison with a library of supernovae spectra using SNID-SAGE (Stoppa F., Smartt S.~J., 2026, arXiv, arXiv:2603.28741. doi:10.48550/arXiv.2603.28741), suggests AT2026pag is an around peak TDE (see attached images). We note that the g-r constant colour evolution to be around -0.2. At that redshift, and correcting for the MW extinction, the current absolute g-band magnitude is Mg ~ -18.9. *Extra note: A bright star was included in the blue edge of the slit, leading to artefacts in wavelengths bluer than ~ 4800 AA (observed wavelength). That is why our spectrum is cut in the blue. However, we believe that the classification is not affected and the target is probably a TDE. 2026TNSCR2636....1C
Related files
File Comments Last Modified (UT) Modified By
tns_2026pag_atrep_24092.png Classifications were done using SNID-SAGE (Stoppa F., Smartt S.~J., 2026, arXiv, arXiv:2603.28741. doi:10.48550/arXiv.2603.28741). 2026-06-20 12:47:33 Panos Charalampopoulos
tns_2026pag_atrep_24092_0.png Classifications were done using SNID-SAGE (Stoppa F., Smartt S.~J., 2026, arXiv, arXiv:2603.28741. doi:10.48550/arXiv.2603.28741). 2026-06-20 12:47:33 Panos Charalampopoulos
tns_2026pag_atrep_24092_1.png Classifications were done using SNID-SAGE (Stoppa F., Smartt S.~J., 2026, arXiv, arXiv:2603.28741. doi:10.48550/arXiv.2603.28741). 2026-06-20 12:47:33 Panos Charalampopoulos
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
24098 2026-06-20 04:26:20 NOT / ALFOSC 2100 Astrid Lind Bouquin Panos Charalampopoulos None tns_2026pag_2026-06-20_04-26-19.533_NOT_ALFOSC_None.ascii Object

Comments