RA/DEC (2000)
01:37:21.635 -59:57:46.09
24.3401453846 -59.9628030769
Type
SN Ia
Redshift
0.05
Discovery ReportClassification Report
Related AstroNotes: 2025-290
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-09-14 06:04:26.112
TNS AT
Y
Public
Y
Discovery Mag
18.608
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_2025xot - 2025-09-22 07:48:07 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
22071 2025-09-22 07:48:07 ESO-NTT / EFOSC2-NTT 600 Ben Warwick, Anwesha Sahu Ben Godson, Joe Lyman ePESSTO+ tns_2025xot_2025-09-22_07-48-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025xot_2025-09-22_07-48-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-09-02 14:34:22 - 2025-09-23 13:29:25 2460921.107197 - 2460942.062096 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519432 2025-09-23 13:29:25 2460942.062096 17.71 0.03 ABMag L-GOTO GOTO-S_GOTO-4 180
519431 2025-09-02 14:34:22 2460921.107197 19.7 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-09-13 08:09:12 - 2025-09-14 06:04:26 2460931.83972 - 2460932.75308 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
517374 2025-09-14 06:04:26 2460932.75308 18.608 0.135 19.12 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
517373 2025-09-13 08:09:12 2460931.83972 18.97 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
271091 2025-09-24 00:43:59 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 01:37:21.684 -59:57:45.72 2025-09-23 13:29:25.440 17.71 L-GOTO Other GOTO25hnm GOTO N
270161 2025-09-15 07:58:08 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 01:37:21.635 -59:57:46.09 2025-09-14 06:04:26.112 18.608 orange-ATLAS PSN ATLAS25ljv ATLAS 2025TNSTR3705....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
22071 2025-09-22 13:36:22 ePESSTOplus_Bot1 Ben Warwick, Anwesha Sahu, Ben Godson, Joe Lyman, A. Horowicz on behalf of ePESSTO+ ePESSTO+ SN Ia 0.05 1 ePESSTO+ 2025TNSCR3813....1W
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
22071 2025-09-22 07:48:07 ESO-NTT / EFOSC2-NTT 600 Ben Warwick, Anwesha Sahu Ben Godson, Joe Lyman ePESSTO+ tns_2025xot_2025-09-22_07-48-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025xot_2025-09-22_07-48-07_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments