RA/DEC (2000)
00:37:54.495 -08:19:25.57
9.477063 -8.323769
Type
SN Ia
Redshift
0.057
Discovery ReportClassification Report
Reporting Group
BlackGEM
Discovering Data Source
BlackGEM
Discovery Date
2025-09-22 05:50:58.000
TNS AT
Y
Public
Y
Discovery Mag
18.88
Filter
BG-q-BlackGem
Reporter/s
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_2025ygp - 2025-10-10 01:18:52 LT / SPRAT (ZTF)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
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
   
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
22183 2025-10-10 01:18:52 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025ygp_2025-10-10_01-18-51.924_LT_SPRAT_ZTF.spec Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-09-23 12:40:50 - 2025-09-23 12:40:50 2460942.028364 - 2460942.028364 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519555 2025-09-23 12:40:50 2460942.028364 18.72 0.07 ABMag L-GOTO GOTO-S_GOTO-3 180
L-GOTO GOTO-N_GOTO-2 2025-09-16 00:04:14 - 2025-09-16 00:04:14 2460934.502937 - 2460934.502937 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519554 2025-09-16 00:04:14 2460934.502937 20 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-09-21 09:14:34 - 2025-09-24 04:13:41 2460939.88512 - 2460942.67617 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519813 2025-09-24 04:13:41 2460942.67617 18.904 0.15 19.32 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
519812 2025-09-21 09:14:34 2460939.88512 17.75 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-09-18 05:48:09 - 2025-09-18 05:48:09 2460936.7417708 - 2460936.7417708 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519155 2025-09-18 05:48:09 2460936.7417708 20.44 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-09-22 05:50:58 - 2025-09-22 05:50:58 2460940.7437269 - 2460940.7437269 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519156 2025-09-22 05:50:58 2460940.7437269 18.88 0.09 20.37 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
r-ZTF P48_ZTF-Cam 2025-09-15 09:25:58 - 2025-09-23 05:49:16 2460933.8930324 - 2460941.7425463 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
519256 2025-09-23 05:49:16 2460941.7425463 18.6445 0.074829 ABMag r-ZTF P48_ZTF-Cam
519255 2025-09-17 08:02:05 2460935.8347801 20.4315 0.159196 ABMag r-ZTF P48_ZTF-Cam
519254 2025-09-15 09:25:58 2460933.8930324 20.7948 ABMag r-ZTF P48_ZTF-Cam [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
271250 2025-09-24 23:29:45 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 00:37:54.480 -08:19:25.81 2025-09-24 04:13:41.088 18.904 cyan-ATLAS PSN ATLAS25lwp ATLAS N
271144 2025-09-24 08:50:40 GOTO_bot S. Belkin,D. O'Neill,K. Ackley et al. GOTO GOTO 00:37:54.465 -08:19:25.66 2025-09-23 12:40:50.304 18.72 L-GOTO Other GOTO25hpk GOTO N
270993 2025-09-23 07:03:57 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 00:37:54.474 -08:19:25.73 2025-09-17 08:02:05.000 20.4315 r-ZTF PSN ZTF25absdrsu ZTF N
270944 2025-09-22 08:49:02 BlackGEM_Bot1 H. Tranin,F. Stoppa,D. Pieterse et al. BlackGEM BlackGEM 00:37:54.495 -08:19:25.57 2025-09-22 05:50:58.000 18.88 BG-q-BlackGem PSN BGEM J003754.49-081925.6 BlackGEM 2025TNSTR3805....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
22183 2025-10-10 02:15:55 Jacob Wise Jacob Wise (LJMU), Daniel Perley (LJMU), K-Ryan Hinds (Caltech), Zoe McGrath (LJMU) ZTF SN Ia 0.057 1 1 ZTF Spectrum is well-fit by template spectra from previously classified SN Ia-norm events. Redshift of z = 0.057 from host H-alpha emission. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022). 2025TNSCR4064....1W
Related files
File Comments Last Modified (UT) Modified By
tns_2025ygp_atrep_22183_ZTF.pdf NGSF fits 2025-10-10 02:15:55 Jacob Wise
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
22183 2025-10-10 01:18:52 LT / SPRAT Jacob Wise, Daniel Perley, K-Ryan Hinds, Zoe McGrath Jacob Wise ZTF tns_2025ygp_2025-10-10_01-18-51.924_LT_SPRAT_ZTF.spec Object

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