RA/DEC (2000)
12:58:03.001 +09:43:24.05
194.512504685 +9.72334729003
Type
SN Ia
Redshift
0.031
Discovery ReportClassification Report
Related AstroNotes: 2025-124
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2025-04-14 11:31:32.736
TNS AT
Y
Public
Y
Discovery Mag
18.01
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_2025hkd - 2025-04-19 01:25:58 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-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌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
20877 2025-04-19 01:25:58 LT / SPRAT B. Warwick GOTO tns_2025hkd_2025-04-19_01-25-58.384_LT_SPRAT_GOTO.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-04-14 11:31:33 - 2025-04-14 11:31:33 2460779.980242 - 2460779.980242 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
482119 2025-04-14 11:31:33 2460779.980242 18.01 0.13 ABMag L-GOTO GOTO-S_GOTO-3 180
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-04-14 05:05:14 - 2025-04-14 05:05:14 2460779.71197 - 2460779.71197 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
482212 2025-04-14 05:05:14 2460779.71197 18.01 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2025-04-14 03:42:35 - 2025-04-14 03:42:35 2460779.654573 - 2460779.654573 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
482118 2025-04-14 03:42:35 2460779.654573 17.9 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-05-25 06:38:13 - 2025-06-12 07:14:11 2460820.7765394 - 2460838.8015162 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494560 2025-06-12 07:14:11 2460838.8015162 19.0393 0.159169 ABMag r-ZTF P48_ZTF-Cam
494558 2025-05-25 06:38:13 2460820.7765394 19.8455 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2025-05-25 07:39:02 - 2025-05-25 07:39:02 2460820.8187731 - 2460820.8187731 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
494559 2025-05-25 07:39:02 2460820.8187731 19.203 0.160735 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-04-15 10:37:42 - 2025-04-15 10:37:42 2460780.94285 - 2460780.94285 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
482213 2025-04-15 10:37:42 2460780.94285 17.886 0.12 18.85 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
w-P1 PS1_GPC1 2025-04-23 06:51:23 - 2025-04-23 06:51:23 2460788.78568 - 2460788.78568 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484140 2025-04-23 06:51:23 2460788.78568 17.32 0.02 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
258185 2025-06-12 08:12:39 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 12:58:03.044 +09:43:23.73 2025-05-25 07:39:01.995 19.203 g-ZTF PSN ZTF25aauozhh ZTF N
252617 2025-04-24 23:58:51 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 12:58:03.001 +09:43:24.05 2025-04-23 06:51:22.752 17.32 w-P1 PSN PS25bqd Pan-STARRS N
251684 2025-04-15 13:48:11 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 12:58:03.012 +09:43:24.22 2025-04-15 10:37:42.240 17.886 orange-ATLAS PSN ATLAS25dvi ATLAS N
251640 2025-04-14 16:58:34 GOTO_bot D. O'Neill,K. Ackley,M. Dyer et al. GOTO GOTO 12:58:03.059 +09:43:24.23 2025-04-14 11:31:32.736 18.01 L-GOTO Other GOTO25bva GOTO 2025TNSTR1380....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
20877 2025-04-20 18:38:26 David O'Neill D. O'Neill, M. Pursiainen, 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 GOTO SN Ia 0.031 1 Add GOTO Auto-reduced LT SPRAT spectrum. The spectrum is consistent with a Type Ia SN ~7 days pre-peak. 2025TNSCR1458....1O
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
20877 2025-04-19 01:25:58 LT / SPRAT B. Warwick GOTO tns_2025hkd_2025-04-19_01-25-58.384_LT_SPRAT_GOTO.ascii Object

Comments

TNS
System

Thu, 04/24/2025 - 23:58

Object coordinates updated

Object coordinates updated according to AT-report 252617 of Group Pan-STARRS
Previous RA, DEC: 12:58:03.012, +09:43:24.22 (194.512551667, +9.723395)
Updated RA, DEC: 12:58:03.001, +09:43:24.05 (194.512504685, +9.72334729003)

TNS
System

Tue, 04/15/2025 - 13:48

Object coordinates updated

Object coordinates updated according to AT-report 251684 of Group ATLAS
Previous RA, DEC: 12:58:03.059, +09:43:24.23 (194.512747, +9.723398)
Updated RA, DEC: 12:58:03.012, +09:43:24.22 (194.512551667, +9.723395)