RA/DEC (2000)
13:27:55.932 +34:22:40.00
201.9830488 +34.3777777
Type
SN Ia-91T-like
Redshift
0.034
Discovery ReportClassification Report
Reporting Group
XOSS
Discovering Data Source
XOSS
Discovery Date
2025-05-25 17:34:18.624
TNS AT
Y
Public
Y
Discovery Mag
18.58
Filter
V-Johnson
Reporter/s
Ziyang Mai, Jianlin Xu, Mi Zhang, Yanxi Li, Leiming Tang, Wenjie Zhou, Jingyuan Zhao, Guoyou Sun, Jiangao Ruan, Xing Gao, on behalf of the PSP team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025lzw - 2025-06-01 23:55:24 LT / SPRAT (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

 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌Other_Other_V
   
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
21211 2025-06-01 23:55:24 LT / SPRAT Robotic GOTO tns_2025lzw_2025-06-01_23-55-23.866_LT_SPRAT_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-05-23 22:24:36 - 2025-05-30 22:29:35 2460819.433749 - 2460826.43721 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
492955 2025-05-30 22:29:35 2460826.43721 16.84 0.02 ABMag L-GOTO GOTO-N_GOTO-2 180
492954 2025-05-23 22:24:36 2460819.433749 19.9 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
g-ZTF P48_ZTF-Cam 2025-05-23 07:55:54 - 2025-05-31 07:44:26 2460818.8304861 - 2460826.8225231 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
492974 2025-05-31 07:44:26 2460826.8225231 16.6435 0.0455515 ABMag g-ZTF P48_ZTF-Cam
492973 2025-05-25 05:48:38 2460820.7421065 18.6241 0.078106 ABMag g-ZTF P48_ZTF-Cam
492972 2025-05-23 07:55:54 2460818.8304861 20.7464 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-05-24 08:44:11 - 2025-05-25 08:32:47 2460819.86402 - 2460820.8561 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
492372 2025-05-25 08:32:47 2460820.8561 18.964 0.118 19.63 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
492371 2025-05-24 08:44:11 2460819.86402 19.54 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
V-Johnson Other_Other 2025-05-25 17:34:19 - 2025-05-25 17:34:19 2460821.23216 - 2460821.23216 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
491532 2025-05-25 17:34:19 2460821.23216 18.58 0.15 19.5 VegaMag V-Johnson Other_Other 30 Xing Gao
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
257411 2025-05-31 07:56:14 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 13:27:55.932 +34:22:40.00 2025-05-25 05:48:38.001 18.6241 g-ZTF PSN ZTF25aarutoh ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
257402 2025-05-31 07:38:39 GOTO_bot D. O'Neill,G. Ramsay,K. Ackley et al. GOTO GOTO 13:27:55.926 +34:22:39.82 2025-05-30 22:29:34.944 16.84 L-GOTO Other GOTO25det GOTO N
257124 2025-05-29 00:10:58 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 13:27:55.929 +34:22:40.15 2025-05-25 08:32:47.040 18.964 orange-ATLAS PSN ATLAS25fqd ATLAS N
256732 2025-05-25 21:45:39 Mi Zhang Ziyang Mai,Jianlin Xu,Mi Zhang et al. XOSS XOSS 13:27:55.910 +34:22:40.00 2025-05-25 17:34:18.624 18.58 V-Johnson Other PSP25J XOSS CV candidate classified by XOSS. Details can be found at http://xjltp.china-vo.org/psp25j.html 2025TNSTR1957....1X N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
21211 2025-06-02 07:49:44 Miika Pursiainen M. Pursiainen, G. Ramsay, B. Warwick, K. Ackley, M. Dyer, F. Jiménez-Ibarra, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, A. Kumar, D. O'Neill on behalf of GOTO collaboration GOTO SN Ia-91T-like 0.034 1 Add GOTO Good template matches to Type Ia-91T-like SNe before peak brightness. At the redshift of the assumed host (z=0.034 from NED), the SN is already -19.2mag after rising for ~8d, securing the Ia-91T classification. 2025TNSCR2077....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
21211 2025-06-01 23:55:24 LT / SPRAT Robotic GOTO tns_2025lzw_2025-06-01_23-55-23.866_LT_SPRAT_GOTO.dat Object

Comments

TNS
System

Sat, 05/31/2025 - 07:56

Object coordinates updated

Object coordinates updated according to AT-report 257411 of Group ZTF
Previous RA, DEC: 13:27:55.929, +34:22:40.15 (201.983035862, +34.37782)
Updated RA, DEC: 13:27:55.932, +34:22:40.00 (201.9830488, +34.3777777)

TNS
System

Thu, 05/29/2025 - 00:10

Object coordinates updated

Object coordinates updated according to AT-report 257124 of Group ATLAS
Previous RA, DEC: 13:27:55.910, +34:22:40.00 (201.982958, +34.377778)
Updated RA, DEC: 13:27:55.929, +34:22:40.15 (201.983035862, +34.37782)