RA/DEC (2000)
02:09:26.097 -71:26:44.91
32.358738 -71.445808
Type
SN Ia-CSM
Redshift
0.059
Discovery ReportClassification Report
Related AstroNotes: 2025-210
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-06-10 08:33:31.104
TNS AT
Y
Public
Y
Discovery Mag
17.841
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_2025nfb - 2025-07-13 07:51:55 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
 ▌ATLAS-CHL_ATLAS-04_cyan
   
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
21517 2025-07-13 07:51:55 ESO-NTT / EFOSC2-NTT 400 Javier Sanchez Sierras, Jonathan Quirola-Vásquez Kate Maguire ePESSTO+ tns_2025nfb_2025-07-13_07-51-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025nfb_2025-07-13_07-51-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-06-05 18:50:42 - 2025-06-13 18:19:55 2460832.285206 - 2460840.263831 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494962 2025-06-13 18:19:55 2460840.263831 17.57 0.05 ABMag L-GOTO GOTO-S_GOTO-4 180
494961 2025-06-05 18:50:42 2460832.285206 17.4 ABMag L-GOTO GOTO-S_GOTO-4 90 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-06-10 08:33:31 - 2025-06-10 08:33:31 2460836.85661 - 2460836.85661 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494432 2025-06-10 08:33:31 2460836.85661 17.841 0.133 18.35 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-06-06 09:12:04 - 2025-06-06 09:12:04 2460832.88338 - 2460832.88338 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494431 2025-06-06 09:12:04 2460832.88338 18.25 ABMag cyan-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
258433 2025-06-14 06:54:50 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 02:09:25.989 -71:26:44.72 2025-06-13 18:19:54.912 17.57 L-GOTO Other GOTO25dlr GOTO N
258127 2025-06-10 10:37:30 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:09:26.097 -71:26:44.91 2025-06-10 08:33:31.104 17.841 orange-ATLAS PSN ATLAS25gag ATLAS 2025TNSTR2170....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
21517 2025-07-13 18:50:25 ePESSTOplus_Bot1 Javier Sanchez Sierras, Jonathan Quirola-Vásquez, Kate Maguire, E. A. Zimmerman on behalf of ePESSTO+ ePESSTO+ SN Ia-CSM 0.059 1 ePESSTO+ 2025TNSCR2682....1S
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
21517 2025-07-13 07:51:55 ESO-NTT / EFOSC2-NTT 400 Javier Sanchez Sierras, Jonathan Quirola-Vásquez Kate Maguire ePESSTO+ tns_2025nfb_2025-07-13_07-51-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025nfb_2025-07-13_07-51-55_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments