RA/DEC (2000)
13:12:46.056 -05:24:54.28
198.1919013 -5.4150769
Type
SN Ia
Redshift
0.017
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-11-30 06:28:54.912
TNS AT
Y
Public
Y
Discovery Mag
17.58
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_2025afhk - 2025-12-08 06:03:41 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
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_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
22531 2025-12-08 06:03:41 LT / SPRAT Robotic GOTO tns_2025afhk_2025-12-08_06-03-41.011_LT_SPRAT_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-06-28 21:45:16 - 2025-11-30 06:28:55 2460855.406436 - 2461009.770081 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
535121 2025-11-30 06:28:55 2461009.770081 17.58 0.04 ABMag L-GOTO GOTO-N_GOTO-2 180
535120 2025-06-28 21:45:16 2460855.406436 19.1 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-08-27 00:01:08 - 2025-08-27 00:01:08 2460914.50079 - 2460914.50079 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538029 2025-08-27 00:01:08 2460914.50079 18.63 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 110 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-07 12:23:15 - 2025-12-07 12:23:15 2461017.0161458 - 2461017.0161458 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536522 2025-12-07 12:23:15 2461017.0161458 17.5692 0.074066 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-12-07 12:56:23 - 2025-12-07 12:56:23 2461017.0391551 - 2461017.0391551 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
536523 2025-12-07 12:56:23 2461017.0391551 18.1792 0.0841944 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-12-02 14:57:26 - 2025-12-02 14:57:26 2461012.12322 - 2461012.12322 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
538030 2025-12-02 14:57:26 2461012.12322 17.402 0.078 18.88 ABMag orange-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
280218 2025-12-12 10:19:56 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 13:12:46.050 -05:24:54.30 2025-12-02 14:57:26.208 17.402 orange-ATLAS PSN ATLAS25pne ATLAS N
279556 2025-12-07 13:04:41 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 13:12:46.056 -05:24:54.28 2025-12-07 12:23:14.997 17.5692 r-ZTF PSN ZTF25acgfiwd ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
278854 2025-11-30 11:38:18 GOTO_bot G. Ramsay,D. O'Neill,K. Ackley et al. GOTO GOTO 13:12:46.063 -05:24:54.21 2025-11-30 06:28:54.912 17.58 L-GOTO Other GOTO25kuz GOTO 2025TNSTR4768....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
22530 2025-12-08 08:50:01 Miika Pursiainen M. Pursiainen, D. O'Neill, T. Killestein, J. Lyman, B. Godson, K. Ackley, M. J. Dyer, K. Ulaczyk, S. Belkin, D. Steeghs, D. K. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. P. Breton, L. K. Nuttall, D. Pollacco, J. Casares Vel'azquez, A. Kumar, on behalf of GOTO collaboration GOTO SN Ia 0.017 1 GOTO Good template matches to old Type Ia SNe at z~0.017 (based on SNID). 2025TNSCR4883....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
22531 2025-12-08 06:03:41 LT / SPRAT Robotic GOTO tns_2025afhk_2025-12-08_06-03-41.011_LT_SPRAT_GOTO.dat Object

Comments

TNS
System

Sun, 12/07/2025 - 13:04

Object coordinates updated

Object coordinates updated according to AT-report 279556 of Group ZTF
Previous RA, DEC: 13:12:46.063, -05:24:54.21 (198.19193, -5.415059)
Updated RA, DEC: 13:12:46.056, -05:24:54.28 (198.1919013, -5.4150769)