RA/DEC (2000)
12:29:48.471 +27:14:10.25
187.451963333 +27.23618
Type
SN II
Redshift
0.02466
Discovery ReportClassification Report
Related AstroNotes: 2025-178
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-06-07 07:37:32.736
TNS AT
Y
Public
Y
Discovery Mag
18.362
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_2025nat - 2025-06-08 07:29:44 FTN / FLOYDS-N (Global SN Project)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

 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_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
21261 2025-06-08 07:29:44 FTN / FLOYDS-N 3600 LCO Joseph Farah Global SN Project tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.ascii tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-06-05 08:17:47 - 2025-06-05 08:17:47 2460831.84568 - 2460831.84568 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494055 2025-06-05 08:17:47 2460831.84568 18.78 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-06-07 07:37:33 - 2025-06-07 07:37:33 2460833.81774 - 2460833.81774 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494056 2025-06-07 07:37:33 2460833.81774 18.362 0.117 19 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
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
257966 2025-06-07 17:45:19 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 12:29:48.471 +27:14:10.25 2025-06-07 07:37:32.736 18.362 orange-ATLAS PSN ATLAS25fyr ATLAS 2025TNSTR2132....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
21261 2025-06-09 04:12:05 Joseph Farah Joseph Farah (LCO/UCSB), Moira Andrew, D. Andrew Howell, Curtis McCully, Yuan Qi Ni, Kathryn Wynn Global SN Project SN II 0.02466 1 Global SN Project Using SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find best fits to SNe II at early phases. The supernova is associated with host NGC 4475 (z = 0.024660, 1998A&AS..130..333T; value from NED). This redshift is well-matched by narrow host hydrogen and helium emission lines. Further followup is encouraged. 2025TNSCR2162....1F
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
21261 2025-06-08 07:29:44 FTN / FLOYDS-N 3600 LCO Joseph Farah Global SN Project tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.ascii tns_2025nat_2025-06-08_07-29-44_FTN_FLOYDS-N_Global_SN_Project.fits Object

Comments