RA/DEC (2000)
11:39:46.056 -31:24:41.20
174.941901429 -31.4114457143
Type
SN Ic
Redshift
0.18
Discovery ReportClassification Report
Related AstroNotes: 2025-228
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-07-13 23:40:30.144
TNS AT
Y
Public
Y
Discovery Mag
18.735
Filter
orange-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), 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 (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_2025req - 2025-07-23 23:56:55 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-S_GOTO-4_L
 ▌ATLAS-CHL_ATLAS-04_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
21615 2025-07-23 23:56:55 ESO-NTT / EFOSC2-NTT 600 G. Martins, R. Santos S. González-Gaitán, J. Duarte ePESSTO+ tns_2025req_2025-07-23_23-56-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025req_2025-07-23_23-56-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-07-06 09:09:01 - 2025-11-30 17:38:36 2460862.881258 - 2461010.235144 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535253 2025-11-30 17:38:36 2461010.235144 18.8 0.07 ABMag L-GOTO GOTO-S_GOTO-4 180
535252 2025-07-06 09:09:01 2460862.881258 19.5 ABMag L-GOTO GOTO-S_GOTO-4 360 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-07-13 00:48:01 - 2025-07-13 23:40:30 2460869.53334 - 2460870.48646 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502768 2025-07-13 23:40:30 2460870.48646 18.735 0.156 19.04 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
502767 2025-07-13 00:48:01 2460869.53334 18.64 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [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
278918 2025-11-30 21:06:10 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 11:39:46.027 -31:24:40.77 2025-11-30 17:38:36.096 18.8 L-GOTO Other GOTO25kws GOTO N
262631 2025-07-15 09:49:22 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 11:39:46.056 -31:24:41.20 2025-07-13 23:40:30.144 18.735 orange-ATLAS PSN ATLAS25hqg ATLAS 2025TNSTR2707....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
21615 2025-07-24 19:15:51 ePESSTOplus_Bot1 G. Martins, R. Santos, S. González-Gaitán, J. Duarte, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ic 0.18 1 ePESSTO+ 2025TNSCR2879....1M
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
21615 2025-07-23 23:56:55 ESO-NTT / EFOSC2-NTT 600 G. Martins, R. Santos S. González-Gaitán, J. Duarte ePESSTO+ tns_2025req_2025-07-23_23-56-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025req_2025-07-23_23-56-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments