RA/DEC (2000)
20:16:29.651 -44:42:21.19
304.123546 -44.705886
Type
SN II
Redshift
0.019
Discovery ReportClassification Report
Related AstroNotes: 2025-156
Reporting Group
BlackGEM
Discovering Data Source
BlackGEM
Discovery Date
2025-05-20 07:16:28.000
TNS AT
Y
Public
Y
Discovery Mag
19.45
Filter
BG-q-BlackGem
Reporter/s
G. Ramsay, H. Tranin, F. Stoppa, D. Pieterse, S. Faris, P. Groot, P. Vreeswijk, N. Blagorodnova, J. van Roestel, H. Wichern, S. Scaringi
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025kxm - 2025-05-25 07:28:26 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-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_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
21134 2025-05-25 07:28:26 ESO-NTT / EFOSC2-NTT 900 Stefano Pio Cosentino, Callum Francis Aster Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee ePESSTO+ tns_2025kxm_2025-05-25_07-28-26_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025kxm_2025-05-25_07-28-26_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-05-06 18:41:44 - 2025-06-04 19:36:45 2460802.278981 - 2460831.317188 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
493667 2025-06-04 19:36:45 2460831.317188 19.42 0.14 ABMag L-GOTO GOTO-S_GOTO-3 180
493666 2025-05-06 18:41:44 2460802.278981 20.2 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-05-21 06:15:18 - 2025-05-21 06:15:18 2460816.76063 - 2460816.76063 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
490344 2025-05-21 06:15:18 2460816.76063 18.85 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2025-05-23 01:06:38 - 2025-05-23 01:06:38 2460818.54627 - 2460818.54627 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
490345 2025-05-23 01:06:38 2460818.54627 19.164 0.184 19.39 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-05-15 07:42:02 - 2025-05-15 07:42:02 2460810.8208565 - 2460810.8208565 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
489397 2025-05-15 07:42:02 2460810.8208565 19.71 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-05-20 07:16:28 - 2025-05-20 07:16:28 2460815.8031019 - 2460815.8031019 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
489398 2025-05-20 07:16:28 2460815.8031019 19.45 0.12 20.41 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
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
257786 2025-06-05 07:23:45 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 20:16:29.720 -44:42:19.92 2025-06-04 19:36:45.216 19.42 L-GOTO Other GOTO25dgx GOTO N
256049 2025-05-23 08:34:25 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 20:16:29.690 -44:42:21.19 2025-05-23 01:06:37.728 19.164 orange-ATLAS PSN ATLAS25fgb ATLAS N
255626 2025-05-21 07:20:27 BlackGEM_Bot1 G. Ramsay,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 20:16:29.651 -44:42:21.19 2025-05-20 07:16:28.000 19.45 BG-q-BlackGem 1 PSN BGEM J201629.65-444221.1 BlackGEM 2025TNSTR1864....1R N
Related files
File Comments Last Modified (UT) Modified By
tns_2025kxm_atrep_255626_BlackGEM.pdf Finding Chart 2025-05-21 07:21:47 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
21134 2025-05-25 16:22:09 ePESSTOplus_Bot1 Stefano Pio Cosentino, Callum Francis Aster, Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee, A. Horowicz on behalf of ePESSTO+ ePESSTO+ SN II 0.019 1 Add ePESSTO+ 2025TNSCR1963....1C
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
21134 2025-05-25 07:28:26 ESO-NTT / EFOSC2-NTT 900 Stefano Pio Cosentino, Callum Francis Aster Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee ePESSTO+ tns_2025kxm_2025-05-25_07-28-26_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025kxm_2025-05-25_07-28-26_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

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