RA/DEC (2000)
21:42:45.017 +13:53:40.78
325.687571284 +13.8946599396
Type
SN IIn
Redshift
0.049164
Discovery ReportClassification Report
Related AstroNotes: 2026-200
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-06-05 03:00:00.000
TNS AT
Y
Public
Y
Discovery Mag
18.87
Filter
L-GOTO
Reporter/s
G. Ramsay, T. Killestein, 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, R. Starling, B. Gompertz, B. Godson, A. Kumar, D. O'Neill, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026osc - 2026-06-12 02:54:25 NOT / ALFOSC (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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-1_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_orange
 ▌PS1_GPC1_r
   
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
24022 2026-06-12 02:54:25 NOT / ALFOSC J. Mills, D O'Neill, M. Pursiainen GOTO tns_2026osc_2461203.621123_NOT_ALFOSC_GOTO.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-06-08 04:48:02 - 2026-06-08 04:48:02 2461199.70002 - 2461199.70002 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590638 2026-06-08 04:48:02 2461199.70002 19.41 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2026-06-03 03:58:12 - 2026-06-05 03:00:00 2461194.665419 - 2461196.625002 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590381 2026-06-05 03:00:00 2461196.625002 18.87 0.19 ABMag L-GOTO GOTO-N_GOTO-1 180
590380 2026-06-03 03:58:12 2461194.665419 19.4 ABMag L-GOTO GOTO-N_GOTO-1 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2026-06-03 09:11:42 - 2026-06-03 09:11:42 2461194.883125 - 2461194.883125 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590559 2026-06-03 09:11:42 2461194.883125 19.336 0.165108 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2026-05-26 10:18:35 - 2026-06-09 11:07:27 2461186.9295718 - 2461200.9635069 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590560 2026-06-09 11:07:27 2461200.9635069 18.838 0.0813537 ABMag g-ZTF P48_ZTF-Cam
590558 2026-05-26 10:18:35 2461186.9295718 21.0218 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-06-09 13:23:52 - 2026-06-09 13:23:52 2461201.05824 - 2461201.05824 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
590639 2026-06-09 13:23:52 2461201.05824 19.011 0.182 19.2 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
r-P1 PS1_GPC1 2026-06-11 13:07:21 - 2026-06-11 13:07:21 2461203.04677 - 2461203.04677 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
591229 2026-06-11 13:07:21 2461203.04677 18.74 0.08 20.6 ABMag r-P1 PS1_GPC1 27 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
308187 2026-06-12 00:36:15 YSE_Bot1 D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al. YSE Pan-STARRS 21:42:45.017 +13:53:40.78 2026-06-11 13:07:20.928 18.74 r-P1 PSN PS26bwl Pan-STARRS N
307887 2026-06-09 20:04:59 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 21:42:44.994 +13:53:41.18 2026-06-09 13:23:51.936 19.011 orange-ATLAS PSN ATLAS26hai ATLAS N
307855 2026-06-09 15:11:28 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 21:42:45.006 +13:53:40.62 2026-06-03 09:11:42.000 19.336 r-ZTF PSN ZTF26aazmngk ZTF N
307734 2026-06-09 08:44:23 GOTO_bot G. Ramsay, T. Killestein, K. Ackley et al. GOTO GOTO 21:42:45.005 +13:53:40.96 2026-06-05 03:00:00.000 18.87 L-GOTO Other GOTO26frh GOTO 2026TNSTR2409....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
24016 2026-06-12 10:44:59 GOTO_bot J. Mills, D O'Neill, M. Pursiainen, T. Killestein, K. Ackley, M. Dyer, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, A. Kumar, on behalf of GOTO collaboration GOTO SN IIn 0.049164 1 GOTO Redshift taken from host, via NED. 2026TNSCR2482....1M
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
24022 2026-06-12 02:54:25 NOT / ALFOSC J. Mills, D O'Neill, M. Pursiainen GOTO tns_2026osc_2461203.621123_NOT_ALFOSC_GOTO.dat Object

Comments

TNS
System

Fri, 06/12/2026 - 00:36

Object coordinates updated

Object coordinates updated according to AT-report 308187 of Group Pan-STARRS
Previous RA, DEC: 21:42:45.006, +13:53:40.62 (325.6875257, +13.8946153)
Updated RA, DEC: 21:42:45.017, +13:53:40.78 (325.687571284, +13.8946599396)

TNS
System

Tue, 06/09/2026 - 15:11

Object coordinates updated

Object coordinates updated according to AT-report 307855 of Group ZTF
Previous RA, DEC: 21:42:45.005, +13:53:40.96 (325.687519, +13.89471)
Updated RA, DEC: 21:42:45.006, +13:53:40.62 (325.6875257, +13.8946153)