RA/DEC (2000)
23:12:32.247 -00:12:27.58
348.1343609 -0.2076598
Type
SN Ia
Redshift
0.077
Discovery ReportClassification Report
Related AstroNotes: 2025-246
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2025-07-19 09:35:19.003
TNS AT
Y
Public
Y
Discovery Mag
20.1767
Filter
g-ZTF
Reporter/s
Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025roy - 2025-07-31 02:16:51 NOT / ALFOSC (BlackGEM)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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌LT_IO-O_r
 ▌GOTO-N_GOTO-1_L
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
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
21717 2025-07-31 02:16:51 NOT / ALFOSC 1200 Marco Antonio Gomez Muñoz Gerard Garcia Moreno BlackGEM tns_2025roy_2025-07-31_02-16-51_NOT_ALFOSC_BlackGEM.txt Object Reduced using pypeit
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-07-24 04:29:50 - 2025-07-24 04:29:50 2460880.68738 - 2460880.68738 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504887 2025-07-24 04:29:50 2460880.68738 18.452 0.062 19.89 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
L-GOTO GOTO-N_GOTO-2 2025-07-21 04:33:02 - 2025-07-21 04:33:02 2460877.689609 - 2460877.689609 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504619 2025-07-21 04:33:02 2460877.689609 18.93 0.2 ABMag L-GOTO GOTO-N_GOTO-2 180
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-07-23 07:35:58 - 2025-07-23 07:35:58 2460879.81664 - 2460879.81664 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504886 2025-07-23 07:35:58 2460879.81664 19.38 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
r-Sloan LT_IO-O 2025-08-17 01:12:20 - 2025-08-17 01:12:20 2460904.5502315 - 2460904.5502315 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
509524 2025-08-17 01:12:20 2460904.5502315 18.6 0.1 ABMag r-Sloan LT_IO-O 660 F. D. Romanov
L-GOTO GOTO-N_GOTO-1 2025-07-20 04:22:35 - 2025-07-20 04:22:35 2460876.682349 - 2460876.682349 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
504618 2025-07-20 04:22:35 2460876.682349 19.6 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-07-25 04:09:03 - 2025-07-26 09:03:49 2460881.6729514 - 2460882.8776505 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505304 2025-07-26 09:03:49 2460882.8776505 18.98 0.07 20.81 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
505303 2025-07-25 04:09:03 2460881.6729514 20.48 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-07-19 08:40:00 - 2025-07-19 08:40:00 2460875.8611111 - 2460875.8611111 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503677 2025-07-19 08:40:00 2460875.8611111 20.1437 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-07-19 09:35:19 - 2025-07-20 10:01:21 2460875.8995255 - 2460876.9176042 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503679 2025-07-20 10:01:21 2460876.9176042 19.7704 0.107103 ABMag g-ZTF P48_ZTF-Cam
503678 2025-07-19 09:35:19 2460875.8995255 20.1767 0.144135 ABMag g-ZTF P48_ZTF-Cam
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
266176 2025-08-17 11:53:31 Filipp Romanov Filipp Romanov et al. F. D. Romanov 23:12:32.250 -00:12:27.60 2025-08-17 01:12:20.000 18.6 r-Sloan 1 PSN SDSS J231232.11-001230.3 SN 2025roy F. D. Romanov Follow-up observation of SN 2025roy using the Liverpool Telescope. N
Related files
File Comments Last Modified (UT) Modified By
tns_2025roy_atrep_266176_F._D._Romanov.jpg Stacked image of SN 2025roy obtained at the Liverpool Telescope. 2025-08-17 11:53:32 Filipp Romanov
263910 2025-07-26 19:59:03 BlackGEM_Bot1 P. Groot,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 23:12:32.272 -00:12:27.73 2025-07-26 09:03:49.000 18.98 BG-q-BlackGem 1 PSN BGEM J231232.27-001227.7 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025roy_atrep_263910_BlackGEM.pdf Finding Chart 2025-07-26 19:59:05 BlackGEM_Bot1
263712 2025-07-25 15:39:58 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 23:12:32.218 -00:12:27.32 2025-07-24 04:29:49.632 18.452 wide-ATLAS PSN ATLAS25igs ATLAS N
263596 2025-07-24 16:43:38 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 23:12:32.225 -00:12:28.05 2025-07-21 04:33:02.304 18.93 L-GOTO Other GOTO25fif GOTO N
263089 2025-07-20 18:43:02 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 23:12:32.247 -00:12:27.58 2025-07-19 09:35:19.003 20.1767 g-ZTF PSN ZTF25abcfyxt ZTF 2025TNSTR2791....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21717 2025-08-08 07:00:06 Hugo Tranin Hugo Tranin BlackGEM SN Ia 0.077 1 1 BlackGEM, CET-3PO Classified with SNID SAGE as SN Ia, with medium confidence. RLAP=16.1 Redshift: 0.0773 ± 0.0001 Age: 4 ± 2 days 2025TNSCR3115....1T
Related files
File Comments Last Modified (UT) Modified By
tns_2025roy_atrep_21717_BlackGEM.JPG 2025-08-08 07:00:25 Hugo Tranin
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
21717 2025-07-31 02:16:51 NOT / ALFOSC 1200 Marco Antonio Gomez Muñoz Gerard Garcia Moreno BlackGEM tns_2025roy_2025-07-31_02-16-51_NOT_ALFOSC_BlackGEM.txt Object Reduced using pypeit

Comments