RA/DEC (2000)
21:59:27.130 -56:07:10.11
329.863043333 -56.1194758333
Type
SN Ia
Redshift
0.04
Discovery ReportClassification Report
Related AstroNotes: 2025-150
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-04-23 08:55:02.784
TNS AT
Y
Public
Y
Discovery Mag
18.312
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), 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_2025irc - 2025-05-20 08:45:28 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
21073 2025-05-20 08:45:28 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_2025irc_2025-05-20_08-45-28_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025irc_2025-05-20_08-45-28_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-04-19 18:21:46 - 2025-05-07 17:10:58 2460785.265114 - 2460803.215948 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
487975 2025-05-07 17:10:58 2460803.215948 17.25 0.09 ABMag L-GOTO GOTO-S_GOTO-4 90
487974 2025-04-19 18:21:46 2460785.265114 17.5 ABMag L-GOTO GOTO-S_GOTO-4 90 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-04-19 09:10:19 - 2025-04-23 08:55:03 2460784.88216 - 2460788.87156 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484792 2025-04-23 08:55:03 2460788.87156 18.312 0.121 18.93 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
484791 2025-04-19 09:10:19 2460784.88216 17.03 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
254862 2025-05-12 14:52:56 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 21:59:26.930 -56:07:11.99 2025-05-07 17:10:58.080 17.25 L-GOTO Other GOTO25cks GOTO N
253019 2025-04-29 19:49:55 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 21:59:27.130 -56:07:10.11 2025-04-23 08:55:02.784 18.312 orange-ATLAS PSN ATLAS25elq ATLAS 2025TNSTR1576....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
21073 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 0.04 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
21073 2025-05-20 08:45:28 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_2025irc_2025-05-20_08-45-28_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025irc_2025-05-20_08-45-28_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments