RA/DEC (2000)
01:54:21.518 -02:37:08.00
28.5896566 -2.6188888
Type
SN Ia
Redshift
0.019
Discovery ReportClassification Report
Related AstroNotes: 2025-225
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-07-20 12:02:01.824
TNS AT
Y
Public
Y
Discovery Mag
17.939
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_2025rpt - 2025-07-23 10:04:46 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-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌P48_ZTF-Cam_r
 ▌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
21610 2025-07-23 10:04:46 ESO-NTT / EFOSC2-NTT 600 R. Santos, G. Martins J. Duarte, S. González-Gaitán ePESSTO+ tns_2025rpt_2025-07-23_10-04-46_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025rpt_2025-07-23_10-04-46_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-07-22 04:11:17 - 2025-07-22 04:11:17 2460878.674501 - 2460878.674501 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504100 2025-07-22 04:11:17 2460878.674501 17.69 0.06 ABMag L-GOTO GOTO-N_GOTO-2 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-07-19 09:01:34 - 2025-07-19 09:01:34 2460875.87609 - 2460875.87609 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503748 2025-07-19 09:01:34 2460875.87609 18.83 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-07-13 05:10:29 - 2025-07-13 05:10:29 2460869.715611 - 2460869.715611 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504099 2025-07-13 05:10:29 2460869.715611 18.8 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2024-12-17 01:02:44 - 2025-07-22 08:17:06 2460661.5435648 - 2460878.8452083 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514475 2025-07-22 08:17:06 2460878.8452083 17.5 0.03 20.98 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
514474 2024-12-17 01:02:44 2460661.5435648 21.33 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-07-29 10:21:03 - 2025-08-02 10:19:46 2460885.9312847 - 2460889.9303935 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
506904 2025-08-02 10:19:46 2460889.9303935 16.0541 0.00646805 ABMag r-ZTF P48_ZTF-Cam
506903 2025-07-29 10:21:03 2460885.9312847 16.176 0.048876 ABMag r-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-07-20 12:02:02 - 2025-07-20 12:02:02 2460877.00141 - 2460877.00141 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503749 2025-07-20 12:02:02 2460877.00141 17.939 0.09 19.11 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
268733 2025-08-31 08:32:09 BlackGEM_Bot1 H. Tranin,F. Stoppa,D. Pieterse et al. BlackGEM BlackGEM 01:54:21.530 -02:37:08.21 2025-07-22 08:17:06.000 17.5 BG-q-BlackGem 1 PSN BGEM J015421.53-023708.2 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025rpt_atrep_268733_BlackGEM.pdf Finding Chart 2025-08-31 08:32:10 BlackGEM_Bot1
264693 2025-08-02 11:12:26 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 01:54:21.518 -02:37:08.00 2025-07-29 10:21:02.998 16.176 r-ZTF PSN ZTF25abflzdu ZTF N
263334 2025-07-22 06:50:55 GOTO_bot A. Kumar,G. Ramsay,K. Ackley et al. GOTO GOTO 01:54:21.504 -02:37:08.14 2025-07-22 04:11:16.800 17.69 L-GOTO Other GOTO25fff GOTO N
263113 2025-07-20 19:16:27 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 01:54:21.510 -02:37:07.74 2025-07-20 12:02:01.824 17.939 orange-ATLAS PSN ATLAS25hyl ATLAS 2025TNSTR2782....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
21610 2025-07-24 05:49:28 ePESSTOplus_Bot1 R. Santos, G. Martins, J. Duarte, S. González-Gaitán, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.019 1 ePESSTO+ 2025TNSCR2880....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
21610 2025-07-23 10:04:46 ESO-NTT / EFOSC2-NTT 600 R. Santos, G. Martins J. Duarte, S. González-Gaitán ePESSTO+ tns_2025rpt_2025-07-23_10-04-46_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025rpt_2025-07-23_10-04-46_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Sat, 08/02/2025 - 11:12

Object coordinates updated

Object coordinates updated according to AT-report 264693 of Group ZTF
Previous RA, DEC: 01:54:21.510, -02:37:07.74 (28.5896263636, -2.61881636364)
Updated RA, DEC: 01:54:21.518, -02:37:08.00 (28.5896566, -2.6188888)