RA/DEC (2000)
21:02:41.135 -67:41:11.98
315.671397692 -67.68666
Type
SN Ia
Redshift
0.09
Related AstroNotes: 2025-112
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-04-02 17:56:26.592
TNS AT
Y
Public
Y
Discovery Mag
18.74
Filter
L-GOTO
Reporter/s
D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration

Spectra

 SN_2025gsx - 2025-04-14 08:35:34 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
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Show [O I] at z=vexp= km/s
Show O II at z=vexp= km/s
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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
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Show Tellurics 
Show Galaxy lines at z=
Show WR-WN at z=vexp= km/s
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   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_cyan
 ATLAS-STH_ATLAS-03_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
20763 2025-04-14 08:35:34 ESO-NTT / EFOSC2-NTT 1200 C. Humina, N. Pyykkinen T. Kravtsov ePESSTO+ tns_2025gsx_2025-04-14_08-35-34_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025gsx_2025-04-14_08-35-34_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-03-13 18:26:18 - 2025-04-02 17:56:27 2460748.268255 - 2460768.247531 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
480572 2025-04-02 17:56:27 2460768.247531 18.74 0.1 ABMag L-GOTO GOTO-S_GOTO-4 180
480571 2025-03-13 18:26:18 2460748.268255 18.7 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-04-07 08:54:10 - 2025-04-07 08:54:10 2460772.87095 - 2460772.87095 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
481270 2025-04-07 08:54:10 2460772.87095 18.696 0.147 18.99 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-04-05 02:43:47 - 2025-04-05 02:43:47 2460770.61374 - 2460770.61374 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
481269 2025-04-05 02:43:47 2460770.61374 19.2 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 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
251172 2025-04-07 16:08:10 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 21:02:41.135 -67:41:11.98 2025-04-07 08:54:10.080 18.696 cyan-ATLAS PSN ATLAS25drb ATLAS N
250816 2025-04-04 08:25:58 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 21:02:41.183 -67:41:11.83 2025-04-02 17:56:26.592 18.74 L-GOTO Other GOTO25bkt GOTO 2025TNSTR1268....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
20763 2025-04-14 15:26:23 ePESSTOplus_Bot1 C. Humina, N. Pyykkinen, T. Kravtsov, E. A. Zimmerman on behalf of ePESSTO+ ePESSTO+ SN Ia 0.09 1 ePESSTO+ 2025TNSCR1384....1H
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
20763 2025-04-14 08:35:34 ESO-NTT / EFOSC2-NTT 1200 C. Humina, N. Pyykkinen T. Kravtsov ePESSTO+ tns_2025gsx_2025-04-14_08-35-34_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025gsx_2025-04-14_08-35-34_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 251172 of Group ATLAS
Previous RA, DEC: 21:02:41.183, -67:41:11.83 (315.671597, -67.686619)
Updated RA, DEC: 21:02:41.135, -67:41:11.98 (315.671397692, -67.68666)