RA/DEC (2000)
00:17:44.381 +05:55:05.82
4.434919 +5.918283625
Type
SN Ia
Redshift
0.07
Discovery ReportClassification Report
Related AstroNotes: 2025-277
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-08-25 05:25:19.488
TNS AT
Y
Public
Y
Discovery Mag
19.49
Filter
L-GOTO
Reporter/s
I. Worssam, D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025vrt - 2025-08-31 05:41:30 NOT / ALFOSC (GOTO)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
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌GOTO-N_GOTO-1_L
 ▌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
21934 2025-08-31 05:41:30 NOT / ALFOSC M. Pursiainen, I. Worssam M. Pursiainen, I. Worssam GOTO tns_2025vrt_2025-08-31_05-41-29.944_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-08-25 03:52:58 - 2025-08-25 03:52:58 2460912.66178 - 2460912.66178 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514825 2025-08-25 03:52:58 2460912.66178 19.62 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 90 Robot [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-08-29 22:54:01 - 2025-08-29 22:54:01 2460917.45418 - 2460917.45418 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514826 2025-08-29 22:54:01 2460917.45418 18.721 0.083 19.66 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot
L-GOTO GOTO-N_GOTO-1 2025-08-24 05:30:11 - 2025-08-25 05:25:19 2460911.729288 - 2460912.725924 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513001 2025-08-25 05:25:19 2460912.725924 19.49 0.19 ABMag L-GOTO GOTO-N_GOTO-1 180
513000 2025-08-24 05:30:11 2460911.729288 19.6 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-08-21 10:07:11 - 2025-08-23 10:39:05 2460908.9216551 - 2460910.9438079 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513724 2025-08-23 10:39:05 2460910.9438079 20.6769 0.153306 ABMag r-ZTF P48_ZTF-Cam
513723 2025-08-21 10:07:11 2460908.9216551 20.2382 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-08-21 08:44:01 - 2025-08-29 08:07:50 2460908.8639005 - 2460916.8387731 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
513725 2025-08-29 08:07:50 2460916.8387731 18.8586 0.0683416 ABMag g-ZTF P48_ZTF-Cam
515220 2025-08-23 09:50:33 2460910.9101042 20.6894 0.299946 20.2422 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
515219 2025-08-21 08:44:01 2460908.8639005 20.4365 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
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
269129 2025-09-02 18:18:03 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 00:17:44.381 +05:55:05.82 2025-08-23 09:50:33.003 20.6894 g-ZTF PSN ZTF25ablufrt ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25ablufrt N
268898 2025-09-01 10:25:14 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 00:17:44.385 +05:55:05.54 2025-08-29 22:54:01.152 18.721 cyan-ATLAS PSN ATLAS25kvu ATLAS N
268370 2025-08-29 09:15:08 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 00:17:44.382 +05:55:05.74 2025-08-23 10:39:05.002 20.6769 r-ZTF PSN ZTF25ablufrt ZTF N
267972 2025-08-28 08:55:47 GOTO_bot I. Worssam,D. O'Neill,K. Ackley et al. GOTO GOTO 00:17:44.394 +05:55:06.04 2025-08-25 05:25:19.488 19.49 L-GOTO Other GOTO25gkm GOTO 2025TNSTR3414....1W N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21934 2025-08-31 08:59:46 David O'Neill M. Pursiainen, I. Worssam, J. Lyman, D. O'Neill, T. Killestein, K. Ackley, M. Dyer, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, B. Godson, A. Kumar on behalf of GOTO collaboration GOTO SN Ia 0.07 1 GOTO Classified using template matching with SNID-SAGE. Object spectrum is consistent with a type Ia around peak. Redshift from template matching. 2025TNSCR3485....1P
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
21934 2025-08-31 05:41:30 NOT / ALFOSC M. Pursiainen, I. Worssam M. Pursiainen, I. Worssam GOTO tns_2025vrt_2025-08-31_05-41-29.944_NOT_ALFOSC_GOTO.dat Object

Comments

TNS
System

Tue, 09/02/2025 - 18:18

Object coordinates updated

Object coordinates updated according to AT-report 269129 of Group ZTF
Previous RA, DEC: 00:17:44.382, +05:55:05.74 (4.4349268, +5.91826)
Updated RA, DEC: 00:17:44.381, +05:55:05.82 (4.434919, +5.918283625)

TNS
System

Fri, 08/29/2025 - 09:15

Object coordinates updated

Object coordinates updated according to AT-report 268370 of Group ZTF
Previous RA, DEC: 00:17:44.394, +05:55:06.04 (4.434976, +5.918345)
Updated RA, DEC: 00:17:44.382, +05:55:05.74 (4.4349268, +5.91826)