RA/DEC (2000)
02:53:21.303 +19:11:34.80
43.3387642935 +19.1929996514
Type
SN Ia-91T-like
Redshift
0.033
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-09-28 00:08:14.208
TNS AT
Y
Public
Y
Discovery Mag
19.27
Filter
L-GOTO
Reporter/s
G. Ramsay, D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, 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_2025ytl - 2025-10-01 01:11:34 NOT / ALFOSC (NUTS2)z=
▌Show H at z=vexp= km/s
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▌Show O V at z=vexp= km/s
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▌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
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▌Show Tellurics 
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▌Show WR-WN at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌LAST_LAST-Cam_Clear
 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_w
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_cyan
   
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
22136 2025-10-01 01:11:34 NOT / ALFOSC 2400 A. Bouquin, K. Valeckas C. Gutiérrez (ICE-CSIC) NUTS2 tns_2025ytl_2025-10-01_01-11-33.587_NOT_ALFOSC_NUTS.dat tns_2025ytl_2025-10-01_01-11-33.587_NOT_ALFOSC_NUTS.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2025-09-27 01:22:59 - 2025-09-27 01:22:59 2460945.55763 - 2460945.55763 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520732 2025-09-27 01:22:59 2460945.55763 20.17 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
Clear- LAST_LAST-Cam 2025-09-02 01:39:22 - 2025-10-18 23:43:36 2460920.56901 - 2460967.48861 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
524746 2025-10-18 23:43:36 2460967.48861 17.33 ABMag Clear- LAST_LAST-Cam 400
524745 2025-09-02 01:39:22 2460920.56901 20.74 ABMag Clear- LAST_LAST-Cam 400 [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-09-28 00:08:14 - 2025-09-28 00:08:14 2460946.505722 - 2460946.505722 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520544 2025-09-28 00:08:14 2460946.505722 19.27 0.11 ABMag L-GOTO GOTO-N_GOTO-2 180
w-P1 PS2_GPC2 2025-11-10 11:35:49 - 2025-11-10 11:35:49 2460989.98321 - 2460989.98321 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
540268 2025-11-10 11:35:49 2460989.98321 18.1 0.03 22 ABMag w-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2025-09-24 02:52:27 - 2025-09-24 02:52:27 2460942.61976 - 2460942.61976 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520543 2025-09-24 02:52:27 2460942.61976 19.7 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-09-25 11:42:14 - 2025-10-01 10:47:23 2460943.987662 - 2460949.9495718 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521518 2025-10-01 10:47:23 2460949.9495718 18.339 0.0509526 ABMag r-ZTF P48_ZTF-Cam
521516 2025-09-25 11:42:14 2460943.987662 20.9955 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-09-25 10:08:25 - 2025-10-01 09:37:31 2460943.9225116 - 2460949.9010532 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
521517 2025-10-01 09:37:31 2460949.9010532 18.5126 0.0640981 ABMag g-ZTF P48_ZTF-Cam
522485 2025-10-01 09:37:31 2460949.9010532 18.5126 0.064098 20.6902 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
522484 2025-09-25 10:08:25 2460943.9225116 20.7676 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
cyan-ATLAS ATLAS-HKO_ATLAS-02 2025-09-29 11:41:15 - 2025-09-29 11:41:15 2460947.98698 - 2460947.98698 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520733 2025-09-29 11:41:15 2460947.98698 18.98 0.16 19.43 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 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
281234 2025-12-18 14:37:22 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 02:53:21.303 +19:11:34.80 2025-11-10 11:35:49.344 18.1 w-P1 PSN PS25irk Pan-STARRS N
273847 2025-10-19 05:30:26 LAST_Bot1 E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al. LAST LAST 02:53:21.300 +19:11:34.41 2025-10-18 23:43:35.904 17.33 Clear- PSN LAST N
272603 2025-10-07 18:16:06 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 02:53:21.303 +19:11:34.87 2025-10-01 09:37:30.996 18.5126 g-ZTF PSN ZTF25abuvoav ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abuvoav N
272165 2025-10-01 11:51:47 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 02:53:21.305 +19:11:34.87 2025-10-01 09:37:30.996 18.5126 g-ZTF PSN ZTF25abuvoav ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
271686 2025-09-29 13:18:31 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 02:53:21.283 +19:11:34.32 2025-09-29 11:41:15.072 18.98 cyan-ATLAS PSN ATLAS25mcy ATLAS N
271592 2025-09-28 09:15:27 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 02:53:21.302 +19:11:34.86 2025-09-28 00:08:14.208 19.27 L-GOTO Other GOTO25hxq GOTO 2025TNSTR3896....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22136 2025-10-01 11:04:23 Maximilian Stritzinger C. Gutiérrez (ICE-CSIC), M. Stritzinger (Aarhus), N. Morrell (Las Campanas), E. Hsiao (FSU), C. Burns (Carnegie), L. Galbany (ICE-CSIC)) NUTS2 SN Ia-91T-like 0.033 1 NUTS2, POISE Spectrum is consistent with a pre-maximum 1991T-like supernova. 2025TNSCR3956....1G
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
22136 2025-10-01 01:11:34 NOT / ALFOSC 2400 A. Bouquin, K. Valeckas C. Gutiérrez (ICE-CSIC) NUTS2 tns_2025ytl_2025-10-01_01-11-33.587_NOT_ALFOSC_NUTS.dat tns_2025ytl_2025-10-01_01-11-33.587_NOT_ALFOSC_NUTS.fits Object

Comments

TNS
System

Thu, 12/18/2025 - 14:37

Object coordinates updated

Object coordinates updated according to AT-report 281234 of Group Pan-STARRS
Previous RA, DEC: 02:53:21.303, +19:11:34.87 (43.338761425, +19.1930198875)
Updated RA, DEC: 02:53:21.303, +19:11:34.80 (43.3387642935, +19.1929996514)

TNS
System

Tue, 10/07/2025 - 18:16

Object coordinates updated

Object coordinates updated according to AT-report 272603 of Group ZTF
Previous RA, DEC: 02:53:21.305, +19:11:34.87 (43.3387709, +19.1930203)
Updated RA, DEC: 02:53:21.303, +19:11:34.87 (43.338761425, +19.1930198875)

TNS
System

Wed, 10/01/2025 - 11:51

Object coordinates updated

Object coordinates updated according to AT-report 272165 of Group ZTF
Previous RA, DEC: 02:53:21.283, +19:11:34.32 (43.3386771429, +19.1928657143)
Updated RA, DEC: 02:53:21.305, +19:11:34.87 (43.3387709, +19.1930203)

TNS
System

Mon, 09/29/2025 - 13:18

Object coordinates updated

Object coordinates updated according to AT-report 271686 of Group ATLAS
Previous RA, DEC: 02:53:21.302, +19:11:34.86 (43.338757, +19.193018)
Updated RA, DEC: 02:53:21.283, +19:11:34.32 (43.3386771429, +19.1928657143)