RA/DEC (2000)
02:09:01.156 -28:42:23.41
32.2548161832 -28.7065017088
Type
SN Ia-91T-like
Redshift
0.07
Discovery ReportClassification Report
Related AstroNotes: 2025-220
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-07-12 17:21:08.064
TNS AT
Y
Public
Y
Discovery Mag
18.82
Filter
L-GOTO
Reporter/s
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_2025rca - 2025-07-18 08:32:23 ESO-NTT / EFOSC2-NTT (None)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
 ▌PS1_GPC1_w
   
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
21573 2025-07-18 08:32:23 ESO-NTT / EFOSC2-NTT 1200 G. Csoernyei G. Csoernyei None tns_2025rca_2025-07-18_08-32-22.516_ESO-NTT_EFOSC2-NTT_None.asci tns_2025rca_2025-07-18_08-32-22.516_ESO-NTT_EFOSC2-NTT_None.fits Object Quick-reduction spectrum
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-07-08 17:27:42 - 2025-07-12 17:21:08 2460865.22757 - 2460869.223005 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502460 2025-07-12 17:21:08 2460869.223005 18.82 0.14 ABMag L-GOTO GOTO-S_GOTO-3 180
502459 2025-07-08 17:27:42 2460865.22757 19.4 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-07-14 09:16:52 - 2025-07-14 09:16:52 2460870.88671 - 2460870.88671 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503172 2025-07-14 09:16:52 2460870.88671 18.57 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2025-07-16 03:49:55 - 2025-07-16 03:49:55 2460872.65966 - 2460872.65966 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
503173 2025-07-16 03:49:55 2460872.65966 18.594 0.122 19.14 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
w-P1 PS1_GPC1 2025-08-19 14:00:12 - 2025-08-19 14:00:12 2460907.08347 - 2460907.08347 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
514273 2025-08-19 14:00:12 2460907.08347 19.43 0.04 22 ABMag w-P1 PS1_GPC1 45 Robot
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
268651 2025-08-30 17:28:08 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:09:01.156 -28:42:23.41 2025-08-19 14:00:11.808 19.43 w-P1 PSN PS25hgd Pan-STARRS N
262848 2025-07-18 00:51:36 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:09:01.152 -28:42:23.36 2025-07-16 03:49:54.624 18.594 orange-ATLAS PSN ATLAS25hte ATLAS N
262457 2025-07-14 13:05:09 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 02:09:01.087 -28:42:23.35 2025-07-12 17:21:08.064 18.82 L-GOTO Other GOTO25ewa GOTO 2025TNSTR2688....1O N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21573 2025-07-19 21:29:02 Geza Csornyei G. Csoernyei, M. Vioque, M. Mirabile (ESO), G. Fernandes Goncalves (Federal University of Technology), L. Hauer (University of Vienna), P. M. Lequizamon Pineda (Università degli Studi di Padova), A. Moore (University College Cork), E. Nilson (Lund University), A. Pisapia (INAF-OAS), J. Willingham (Macquarie University) None SN Ia-91T-like 0.07 1 1 GELATO finds remarkable match with the 91T-like 1999ac at the epoch of -2.5 days. Redshift was adopted from 2dF survey. 2025TNSCR2777....1C
Related files
File Comments Last Modified (UT) Modified By
tns_2025rca_atrep_21573.png GELATO comparison plot 2025-07-19 21:29:02 Geza Csornyei
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
21573 2025-07-18 08:32:23 ESO-NTT / EFOSC2-NTT 1200 G. Csoernyei G. Csoernyei None tns_2025rca_2025-07-18_08-32-22.516_ESO-NTT_EFOSC2-NTT_None.asci tns_2025rca_2025-07-18_08-32-22.516_ESO-NTT_EFOSC2-NTT_None.fits Object Quick-reduction spectrum

Comments

TNS
System

Sat, 08/30/2025 - 17:28

Object coordinates updated

Object coordinates updated according to AT-report 268651 of Group Pan-STARRS
Previous RA, DEC: 02:09:01.152, -28:42:23.36 (32.2548007143, -28.70649)
Updated RA, DEC: 02:09:01.156, -28:42:23.41 (32.2548161832, -28.7065017088)

TNS
System

Fri, 07/18/2025 - 00:51

Object coordinates updated

Object coordinates updated according to AT-report 262848 of Group ATLAS
Previous RA, DEC: 02:09:01.087, -28:42:23.35 (32.254528, -28.706487)
Updated RA, DEC: 02:09:01.152, -28:42:23.36 (32.2548007143, -28.70649)