RA/DEC (2000)
12:42:12.519 -05:47:38.69
190.552161711 -5.79407962946
Type
SN II
Redshift
0.0544
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-03-22 12:21:33.408
TNS AT
Y
Public
Y
Discovery Mag
19.59
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, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026gyy - 2026-06-01 04:22:23 P200 / NGPS (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

 ▌LAST_LAST-Cam_Clear
 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_w
 ▌ATLAS-CHL_ATLAS-04_cyan
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌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
23930 2026-06-01 04:22:23 P200 / NGPS Gokul Prem Srinivasaragavan, K-Ryan Hinds Gokul Prem Srinivasaragavan, K-Ryan Hinds ZTF tns_2026gyy_2026-06-01_04-22-23_P200_NGPS_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
Clear- LAST_LAST-Cam 2024-03-04 23:35:48 - 2026-04-08 20:50:36 2460374.4832 - 2461139.36847 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
573691 2026-04-08 20:50:36 2461139.36847 19.21 ABMag Clear- LAST_LAST-Cam 400
573690 2024-03-04 23:35:48 2460374.4832 20.91 ABMag Clear- LAST_LAST-Cam 2000 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2026-03-20 12:27:33 - 2026-03-22 12:21:33 2461120.019126 - 2461122.014967 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569305 2026-03-22 12:21:33 2461122.014967 19.59 0.12 ABMag L-GOTO GOTO-S_GOTO-3 180
569304 2026-03-20 12:27:33 2461120.019126 20.3 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
w-P1 PS2_GPC2 2026-04-22 08:20:56 - 2026-04-22 08:20:56 2461152.84787 - 2461152.84787 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577381 2026-04-22 08:20:56 2461152.84787 19.37 0.05 22 ABMag w-P1 PS2_GPC2 45 Robot
cyan-ATLAS ATLAS-CHL_ATLAS-04 2026-03-26 05:28:30 - 2026-03-26 05:28:30 2461125.72812 - 2461125.72812 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
570222 2026-03-26 05:28:30 2461125.72812 18.748 0.085 19.72 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-12-30 08:31:02 - 2025-12-30 08:31:02 2461039.8548843 - 2461039.8548843 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569567 2025-12-30 08:31:02 2461039.8548843 20.73 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2026-03-24 04:34:14 - 2026-03-24 04:34:14 2461123.6904398 - 2461123.6904398 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569568 2026-03-24 04:34:14 2461123.6904398 19.13 0.07 20.73 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic
r-ZTF P48_ZTF-Cam 2026-03-23 09:04:18 - 2026-03-23 09:04:18 2461122.8779861 - 2461122.8779861 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569406 2026-03-23 09:04:18 2461122.8779861 19.3502 0.101121 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2026-03-20 09:04:59 - 2026-03-21 08:35:49 2461119.8784606 - 2461120.858206 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569405 2026-03-21 08:35:49 2461120.858206 20.3694 0.216577 ABMag g-ZTF P48_ZTF-Cam
572233 2026-03-21 08:35:49 2461120.858206 20.3694 0.216577 20.2916 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
569404 2026-03-20 09:04:59 2461119.8784606 20.8369 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
572232 2026-03-20 09:04:59 2461119.8784606 20.2585 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-03-25 11:59:07 - 2026-03-25 11:59:07 2461124.99939 - 2461124.99939 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
570221 2026-03-25 11:59:07 2461124.99939 19.35 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
301192 2026-04-23 20:38:23 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 12:42:12.519 -05:47:38.69 2026-04-22 08:20:55.968 19.37 w-P1 PSN PS26bcp Pan-STARRS N
299297 2026-04-09 01:19:56 LAST_Bot1 R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al. LAST LAST 12:42:12.554 -05:47:37.73 2026-04-08 20:50:35.808 19.21 Clear- PSN LAST N
298508 2026-04-04 18:45:58 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 12:42:12.528 -05:47:38.66 2026-03-21 08:35:48.998 20.3694 g-ZTF PSN ZTF26aaocqss ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aaocqss N
297417 2026-03-26 10:08:50 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 12:42:12.544 -05:47:38.71 2026-03-26 05:28:29.568 18.748 cyan-ATLAS PSN ATLAS26dhm ATLAS N
297112 2026-03-24 08:30:09 BlackGEM_Bot1 L. Landsberg, H. Tranin, F. Stoppa et al. BlackGEM BlackGEM 12:42:12.511 -05:47:38.78 2026-03-24 04:34:14.000 19.13 BG-q-BlackGem PSN BGEM J124212.51-054738.8 BlackGEM N
297045 2026-03-23 09:36:16 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 12:42:12.529 -05:47:39.06 2026-03-21 08:35:48.998 20.3694 g-ZTF PSN ZTF26aaocqss ZTF N
296998 2026-03-22 18:20:07 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 12:42:12.519 -05:47:39.06 2026-03-22 12:21:33.408 19.59 L-GOTO Other GOTO26chq GOTO 2026TNSTR1225....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
23926 2026-06-03 16:59:41 ZTF_Bot1 K. Hinds, C. Fremling, J. Castaneda Jaimes, T. du Laz, T. Culino, M. Kasliwal (Caltech), and M. Coughlin (UoM) on behalf of the ZTF LIONS collaboration ZTF SN II 0.0544 1 ZTF
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
23930 2026-06-01 04:22:23 P200 / NGPS Gokul Prem Srinivasaragavan, K-Ryan Hinds Gokul Prem Srinivasaragavan, K-Ryan Hinds ZTF tns_2026gyy_2026-06-01_04-22-23_P200_NGPS_ZTF.ascii Object

Comments

TNS
System

Thu, 04/23/2026 - 20:38

Object coordinates updated

Object coordinates updated according to AT-report 301192 of Group Pan-STARRS
Previous RA, DEC: 12:42:12.528, -05:47:38.66 (190.55219999412, -5.7940709588235)
Updated RA, DEC: 12:42:12.519, -05:47:38.69 (190.552161711, -5.79407962946)

TNS
System

Sat, 04/04/2026 - 18:45

Object coordinates updated

Object coordinates updated according to AT-report 298508 of Group ZTF
Previous RA, DEC: 12:42:12.529, -05:47:39.06 (190.5522056, -5.7941821)
Updated RA, DEC: 12:42:12.528, -05:47:38.66 (190.55219999412, -5.7940709588235)

TNS
System

Mon, 03/23/2026 - 09:36

Object coordinates updated

Object coordinates updated according to AT-report 297045 of Group ZTF
Previous RA, DEC: 12:42:12.519, -05:47:39.06 (190.552163, -5.794182)
Updated RA, DEC: 12:42:12.529, -05:47:39.06 (190.5522056, -5.7941821)