RA/DEC (2000)
11:10:47.712 +28:43:39.08
167.698801667 +28.7275216667
Type
SN Ia-91T-like
Redshift
0.03
Discovery ReportClassification Report
Related AstroNotes: 2025-150
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-05-01 07:24:04.032
TNS AT
Y
Public
Y
Discovery Mag
18.779
Filter
cyan-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), 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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (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_2025iyj - 2025-05-20 00:40:22 ESO-NTT / EFOSC2-NTT (ePESSTO+)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-MLO_ATLAS-01_cyan
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌Other_Other_L
   
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
21065 2025-05-20 00:40:22 ESO-NTT / EFOSC2-NTT 600 Stefano Pio Cosentino, Callum Francis Aster Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee, Cheng-Han Lai, Meng-Han Lee, Jie-Lin Yang ePESSTO+ tns_2025iyj_2025-05-20_00-40-22_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025iyj_2025-05-20_00-40-22_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-04-24 21:51:55 - 2025-04-24 21:51:55 2460790.411049 - 2460790.411049 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488068 2025-04-24 21:51:55 2460790.411049 18.7 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-05-03 00:22:23 - 2025-05-03 00:22:23 2460798.515541 - 2460798.515541 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488069 2025-05-03 00:22:23 2460798.515541 17.97 0.04 ABMag L-GOTO GOTO-N_GOTO-1 360
cyan-ATLAS ATLAS-MLO_ATLAS-01 2025-05-01 07:24:04 - 2025-05-01 07:24:04 2460796.80838 - 2460796.80838 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
485380 2025-05-01 07:24:04 2460796.80838 18.779 0.097 19.55 ABMag cyan-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-04-28 09:01:38 - 2025-04-28 09:01:38 2460793.87613 - 2460793.87613 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
485379 2025-04-28 09:01:38 2460793.87613 19.53 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [Last non detection]
L- Other_Other 2025-05-18 16:30:34 - 2025-05-18 16:30:34 2460814.18789 - 2460814.18789 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488908 2025-05-18 16:30:34 2460814.18789 16.3 19.5 VegaMag L- Other_Other 60 Tao Chen Mewlon 300+ QHY294M
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
255365 2025-05-19 01:12:20 Yuan-Sheng Tsai Zhangwei Jin,Tao Chen,Jie-Lin Yang et al. JIST JIST 11:10:47.710 +28:43:39.60 2025-05-18 16:30:33.696 16.3 L- PSN JIST N
254931 2025-05-13 09:19:26 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 11:10:47.715 +28:43:39.05 2025-05-03 00:22:22.656 17.97 L-GOTO Other GOTO25ckn GOTO N
253325 2025-05-01 23:42:42 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 11:10:47.712 +28:43:39.08 2025-05-01 07:24:04.032 18.779 cyan-ATLAS PSN ATLAS25emg ATLAS 2025TNSTR1609....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
21065 2025-05-20 18:16:16 ePESSTOplus_Bot1 Stefano Pio Cosentino, Callum Francis Aster, Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee, Cheng-Han Lai, Meng-Han Lee, Jie-Lin Yang, Ofer Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia-91T-like 0.03 1 Add ePESSTO+ 2025TNSCR1857....1C
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
21065 2025-05-20 00:40:22 ESO-NTT / EFOSC2-NTT 600 Stefano Pio Cosentino, Callum Francis Aster Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee, Cheng-Han Lai, Meng-Han Lee, Jie-Lin Yang ePESSTO+ tns_2025iyj_2025-05-20_00-40-22_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025iyj_2025-05-20_00-40-22_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

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