RA/DEC (2000)
01:55:03.397 -81:37:19.20
28.764154 -81.622
Type
SN Ia
Redshift
0.072
Discovery ReportClassification Report
Related AstroNotes: 2025-248
Reporting Group
BlackGEM
Discovering Data Source
BlackGEM
Discovery Date
2025-08-05 06:14:17.000
TNS AT
Y
Public
Y
Discovery Mag
18.56
Filter
BG-q-BlackGem
Reporter/s
L. Landsberg, H. Tranin, F. Stoppa, D. Pieterse, G. Ramsay, S. Faris, P. Groot, P. Vreeswijk, N. Blagorodnova, J. van Roestel, H. Wichern, S. Scaringi
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025tfy - 2025-08-09 05:16:49 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
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌ML1_MeerLICHT-Cam_BG-q
   
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
21733 2025-08-09 05:16:49 ESO-NTT / EFOSC2-NTT 900 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter ePESSTO+ tns_2025tfy_2025-08-09_05-16-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025tfy_2025-08-09_05-16-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-07-16 16:28:50 - 2025-07-24 15:01:40 2460873.186686 - 2460881.126165 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
511065 2025-07-24 15:01:40 2460881.126165 19.06 0.13 ABMag L-GOTO GOTO-S_GOTO-4 180
511064 2025-07-16 16:28:50 2460873.186686 19.4 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-08-05 06:14:17 - 2025-08-05 06:14:17 2460892.759919 - 2460892.759919 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507473 2025-08-05 06:14:17 2460892.759919 18.56 0.12 19.34 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
BG-q-BlackGem ML1_MeerLICHT-Cam 2021-04-28 10:06:37 - 2021-04-28 10:06:37 2459332.9212616 - 2459332.9212616 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
507472 2021-04-28 10:06:37 2459332.9212616 20.48 ABMag BG-q-BlackGem ML1_MeerLICHT-Cam 60 robotic [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
267006 2025-08-21 21:31:01 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 01:55:03.168 -81:37:19.98 2025-07-24 15:01:40.224 19.06 L-GOTO Other GOTO25fri GOTO N
265057 2025-08-05 07:37:03 BlackGEM_Bot1 L. Landsberg,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 01:55:03.397 -81:37:19.20 2025-08-05 06:14:17.000 18.56 BG-q-BlackGem 1 PSN BGEM J015503.39-813719.2 BlackGEM 2025TNSTR3078....1L N
Related files
File Comments Last Modified (UT) Modified By
tns_2025tfy_atrep_265057_BlackGEM.pdf Finding Chart 2025-08-05 07:37:05 BlackGEM_Bot1
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21733 2025-08-09 18:19:17 ePESSTOplus_Bot1 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani, Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.072 1 ePESSTO+ 2025TNSCR3127....1v
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
21733 2025-08-09 05:16:49 ESO-NTT / EFOSC2-NTT 900 Joyce Naomi Dominique van Dalen, Daniele Bjørn Malesani Antonio Martin-Carrillo, Gregory Corcoran, Laura Cotter ePESSTO+ tns_2025tfy_2025-08-09_05-16-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025tfy_2025-08-09_05-16-49_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments