RA/DEC (2000)
15:10:21.790 +54:24:13.76
227.590792 +54.403822
Type
SN Ia
Redshift
0.064528
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-12-11 15:00:38.016
TNS AT
Y
Public
Y
Discovery Mag
17.703
Filter
orange-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2025agsq - 2025-12-17 22:25:07 Lijiang-2.4m / YFOSC (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

 ▌WFST_WFST-WFC_r
 ▌ATLAS-MLO_ATLAS-01_orange
   
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
22629 2025-12-17 22:25:07 Lijiang-2.4m / YFOSC Luhan Li Luhan Li None tns_2025agsq_2025-12-17_22-25-07.452_Lijiang-2.4m_YFOSC_None.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
r-WFST WFST_WFST-WFC 2026-02-03 19:19:12 - 2026-02-03 19:19:12 2461075.305 - 2461075.305 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
572765 2026-02-03 19:19:12 2461075.305 19.82 0.04 ABMag r-WFST WFST_WFST-WFC 30
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-10-03 05:29:18 - 2025-12-11 15:00:38 2460951.72868 - 2461021.12544 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538513 2025-12-11 15:00:38 2461021.12544 17.703 0.109 18.73 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
538512 2025-10-03 05:29:18 2460951.72868 18.85 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
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
298830 2026-04-06 13:43:37 WFST_SN Zelin Xu, Dezheng Meng, Ji-an Jiang et al. WFST WFST 15:10:21.790 +54:24:13.76 2026-02-03 19:19:12.000 19.82 r-WFST PSN WFST260203befsl WFST N
280419 2025-12-13 19:15:43 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 15:10:21.794 +54:24:13.85 2025-12-11 15:00:38.016 17.703 orange-ATLAS PSN ATLAS25pqz ATLAS 2025TNSTR4949....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
22628 2025-12-18 03:31:05 Luhan Li Bo Wang, Luhan Li, Jujia Zhang, Liping Li, Xinjie Luo, Shiyang Dong (YNAO) None SN Ia 0.064528 1 The spectrum obtained by LJT is similar to SN Ia in the NGSF, particularly to SN 1999aa at +31 days. The redshift z = 0.064528 is adopted from NED. 2025TNSCR5048....1W
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
22629 2025-12-17 22:25:07 Lijiang-2.4m / YFOSC Luhan Li Luhan Li None tns_2025agsq_2025-12-17_22-25-07.452_Lijiang-2.4m_YFOSC_None.dat Object

Comments

TNS
System

Mon, 04/06/2026 - 13:43

Object coordinates updated

Object coordinates updated according to AT-report 298830 of Group WFST
Previous RA, DEC: 15:10:21.794, +54:24:13.85 (227.590806667, +54.4038466667)
Updated RA, DEC: 15:10:21.790, +54:24:13.76 (227.590792, +54.403822)