RA/DEC (2000)
22:13:47.009 +13:47:19.91
333.445871074 +13.7888633446
Type
SN Ia
Redshift
0.025244
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-09-27 22:13:21.216
TNS AT
Y
Public
Y
Discovery Mag
18.41
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_2025ytg - 2025-09-30 21:50:03 LT / SPRAT (GOTO)z=
 ▌SN_2025ytg - 2025-09-30 08:16:19 P60 / SEDM (ZTF)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-1_L
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌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
22135 2025-09-30 21:50:03 LT / SPRAT Robotic GOTO tns_2025ytg_2025-09-30_21-50-02.746_LT_SPRAT_GOTO.dat Object
22127 2025-09-30 08:16:19 P60 / SEDM 2160 SEDmRobot jpurdum ZTF tns_2025ytg_2025-09-30_08-16-18.949382_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-1 2025-09-15 22:30:22 - 2025-09-27 22:13:21 2460934.437747 - 2460946.425939 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520526 2025-09-27 22:13:21 2460946.425939 18.41 0.06 ABMag L-GOTO GOTO-N_GOTO-1 180
520525 2025-09-15 22:30:22 2460934.437747 19.8 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-09-27 01:05:46 - 2025-09-28 00:42:00 2460945.5456713 - 2460946.5291667 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520567 2025-09-28 00:42:00 2460946.5291667 18.44 0.07 20.47 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
520566 2025-09-27 01:05:46 2460945.5456713 20.19 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-09-25 05:37:19 - 2025-09-25 05:37:19 2460943.7342477 - 2460943.7342477 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520856 2025-09-25 05:37:19 2460943.7342477 20.701 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-09-25 07:41:23 - 2025-09-30 06:54:42 2460943.8204051 - 2460948.7879861 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
520858 2025-09-30 06:54:42 2460948.7879861 17.5016 0.0559652 ABMag g-ZTF P48_ZTF-Cam
520857 2025-09-25 07:41:23 2460943.8204051 20.1853 0.190423 ABMag g-ZTF P48_ZTF-Cam
w-P1 PS1_GPC1 2025-10-01 06:41:24 - 2025-10-01 06:41:24 2460949.77875 - 2460949.77875 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
522307 2025-10-01 06:41:24 2460949.77875 17.31 0.01 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
272520 2025-10-05 08:31:54 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 22:13:47.009 +13:47:19.91 2025-10-01 06:41:24.000 17.31 w-P1 PSN PS25htf Pan-STARRS N
271758 2025-09-30 08:13:39 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 22:13:47.017 +13:47:20.10 2025-09-25 07:41:23.000 20.1853 g-ZTF PSN ZTF25abtpvtg ZTF N
271604 2025-09-28 11:26:02 BlackGEM_Bot1 H. Tranin,F. Stoppa,D. Pieterse et al. BlackGEM BlackGEM 22:13:47.034 +13:47:20.05 2025-09-28 00:42:00.000 18.44 BG-q-BlackGem PSN BGEM J221347.03+134720.0 BlackGEM N
271583 2025-09-27 23:27:01 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 22:13:47.018 +13:47:19.99 2025-09-27 22:13:21.216 18.41 L-GOTO Other GOTO25hwl GOTO 2025TNSTR3885....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
22135 2025-10-01 10:33:44 Miika Pursiainen M. Pursiainen, D. O'Neill, T. Killestein, B. Godson, K. Ackley, M. J. Dyer, J. Lyman, 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, D. O'Neill on behalf of GOTO collaboration GOTO SN Ia 0.025244 1 GOTO Good template matches to Type Ia SNe at the redshift of the host galaxy 0.025244 (NED) 2025TNSCR3954....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
22135 2025-09-30 21:50:03 LT / SPRAT Robotic GOTO tns_2025ytg_2025-09-30_21-50-02.746_LT_SPRAT_GOTO.dat Object
22127 2025-09-30 15:22:55 ZTF_Bot1 C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore ZTF SN Ia 0.023 1 ZTF 2025TNSCR3938....1F
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
22127 2025-09-30 08:16:19 P60 / SEDM 2160 SEDmRobot jpurdum ZTF tns_2025ytg_2025-09-30_08-16-18.949382_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Sun, 10/05/2025 - 08:31

Object coordinates updated

Object coordinates updated according to AT-report 272520 of Group Pan-STARRS
Previous RA, DEC: 22:13:47.034, +13:47:20.05 (333.445975, +13.788903)
Updated RA, DEC: 22:13:47.009, +13:47:19.91 (333.445871074, +13.7888633446)

TNS
System

Sun, 09/28/2025 - 11:26

Object coordinates updated

Object coordinates updated according to AT-report 271604 of Group BlackGEM
Previous RA, DEC: 22:13:47.018, +13:47:19.99 (333.445907, +13.788887)
Updated RA, DEC: 22:13:47.034, +13:47:20.05 (333.445975, +13.788903)