RA/DEC (2000)
10:02:22.358 -13:02:20.70
150.593158515 -13.0390834823
Type
SLSN-II
Redshift
0.222
Discovery ReportClassification Report
Related AstroNotes: 2026-10, 2026-92
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-01-10 14:20:57.696
TNS AT
Y
Public
Y
Discovery Mag
19.61
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_2026mh - 2026-03-21 06:18:00 Magellan-Clay / LDSS-3 (FLEET)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-S_GOTO-3_L
 ▌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
23404 2026-03-21 06:18:00 Magellan-Clay / LDSS-3 Yuri Beletsky Harsh Kumar FLEET tns_2026mh_2026-03-21_06-18-00_Magellan-Clay_LDSS-3_FLEET.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-01-15 03:34:07 - 2026-01-16 02:31:11 2461055.64869 - 2461056.60499 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550879 2026-01-16 02:31:11 2461056.60499 19.392 0.154 19.99 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
550878 2026-01-15 03:34:07 2461055.64869 20.09 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-12-24 15:14:59 - 2026-01-10 14:20:58 2461034.135395 - 2461051.097888 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548309 2026-01-10 14:20:58 2461051.097888 19.61 0.12 ABMag L-GOTO GOTO-S_GOTO-3 180
548308 2025-12-24 15:14:59 2461034.135395 20.2 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2025-12-28 10:30:08 - 2025-12-28 10:30:08 2461037.9375926 - 2461037.9375926 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548748 2025-12-28 10:30:08 2461037.9375926 19.3703 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-01-09 10:02:38 - 2026-01-12 08:38:41 2461049.9184954 - 2461052.8601968 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548750 2026-01-12 08:38:41 2461052.8601968 19.4965 0.174583 ABMag g-ZTF P48_ZTF-Cam
548749 2026-01-09 10:02:38 2461049.9184954 19.8293 0.198235 ABMag g-ZTF P48_ZTF-Cam
w-P1 PS1_GPC1 2026-02-19 11:05:16 - 2026-02-19 11:05:16 2461090.96199 - 2461090.96199 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
559806 2026-02-19 11:05:16 2461090.96199 19.47 0.05 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
292077 2026-02-20 23:42:57 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 10:02:22.358 -13:02:20.70 2026-02-19 11:05:15.936 19.47 w-P1 PSN PS26ahl Pan-STARRS N
287578 2026-01-16 23:14:18 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 10:02:22.361 -13:02:20.58 2026-01-16 02:31:11.136 19.392 wide-ATLAS PSN ATLAS26ary ATLAS N
286599 2026-01-12 09:11:47 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 10:02:22.380 -13:02:21.01 2026-01-09 10:02:38.002 19.8293 g-ZTF PSN ZTF26aaadhkv ZTF N
286384 2026-01-10 19:46:59 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 10:02:22.420 -13:02:20.43 2026-01-10 14:20:57.696 19.61 L-GOTO Other GOTO26fn GOTO 2026TNSTR..90....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
23402 2026-03-31 20:22:06 Peter Blanchard Peter Blanchard (Harvard/CfA), Harsh Kumar (Harvard/CfA), Edo Berger (Harvard/CfA), Sebastian Gomez (UT Austin), Daichi Hiramatsu (Univ. of Florida) FLEET SLSN-II 0.222 1 FLEET 2026TNSCR1380....1B
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
23404 2026-03-21 06:18:00 Magellan-Clay / LDSS-3 Yuri Beletsky Harsh Kumar FLEET tns_2026mh_2026-03-21_06-18-00_Magellan-Clay_LDSS-3_FLEET.ascii Object

Comments

TNS
System

Fri, 02/20/2026 - 23:42

Object coordinates updated

Object coordinates updated according to AT-report 292077 of Group Pan-STARRS
Previous RA, DEC: 10:02:22.380, -13:02:21.01 (150.5932505, -13.0391706)
Updated RA, DEC: 10:02:22.358, -13:02:20.70 (150.593158515, -13.0390834823)

TNS
System

Mon, 01/12/2026 - 09:11

Object coordinates updated

Object coordinates updated according to AT-report 286599 of Group ZTF
Previous RA, DEC: 10:02:22.420, -13:02:20.43 (150.593418, -13.039009)
Updated RA, DEC: 10:02:22.380, -13:02:21.01 (150.5932505, -13.0391706)