RA/DEC (2000)
07:56:26.814 -78:41:57.78
119.111724615 -78.6993823077
Type
SN Ia
Redshift
0.0157
Discovery ReportClassification Report
Related AstroNotes: 2025-287
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-09-10 08:51:58.752
TNS AT
Y
Public
Y
Discovery Mag
16.303
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_2025xeg - 2025-09-20 08:01:04 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
22057 2025-09-20 08:01:04 ESO-NTT / EFOSC2-NTT 360 A. Sahu, B. Warwick M. Pursiainen ePESSTO+ tns_2025xeg_2025-09-20_08-01-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025xeg_2025-09-20_08-01-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-09-01 17:53:15 - 2025-09-13 19:00:30 2460920.245313 - 2460932.292009 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
516922 2025-09-13 19:00:30 2460932.292009 15.74 0.01 ABMag L-GOTO GOTO-S_GOTO-4 180
516921 2025-09-01 17:53:15 2460920.245313 19.9 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-09-07 09:46:35 - 2025-09-10 08:51:59 2460925.90735 - 2460928.86943 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
516275 2025-09-10 08:51:59 2460928.86943 16.303 0.062 18.35 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
516274 2025-09-07 09:46:35 2460925.90735 15.72 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
269933 2025-09-14 11:48:10 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 07:56:26.763 -78:41:57.70 2025-09-13 19:00:29.664 15.74 L-GOTO Other GOTO25gzn GOTO N
269612 2025-09-10 13:16:33 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 07:56:26.814 -78:41:57.78 2025-09-10 08:51:58.752 16.303 orange-ATLAS PSN ATLAS25ldn ATLAS 2025TNSTR3637....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
22057 2025-09-20 15:24:18 ePESSTOplus_Bot1 A. Sahu, B. Warwick, M. Pursiainen, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.0157 1 ePESSTO+ 2025TNSCR3785....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
22057 2025-09-20 08:01:04 ESO-NTT / EFOSC2-NTT 360 A. Sahu, B. Warwick M. Pursiainen ePESSTO+ tns_2025xeg_2025-09-20_08-01-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025xeg_2025-09-20_08-01-04_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments