RA/DEC (2000)
13:35:32.799 +13:40:57.44
203.886661212 +13.6826234406
Type
SN IIP
Redshift
0.0229
Discovery ReportClassification Report
Related AstroNotes: 2026-73
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-03-10 01:53:49.920
TNS AT
Y
Public
Y
Discovery Mag
19.737
Filter
wide-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026fjy - 2026-03-21 10:50:11 HET / HET-LRS (TexSNs)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
 ▌PS2_GPC2_w
 ▌ATLAS-STH_ATLAS-03_orange
 ▌GOTO-N_GOTO-1_L
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
   
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
23330 2026-03-21 10:50:11 HET / HET-LRS 1500 Sergey Rostopchin, Crassie Crowe Panacea pipeline TexSNs tns_2026fjy_2026-03-21_10-50-11_HET_HET-LRS_TexSNs.dat Object The spectrum consists of broad P Cygni Balmer features indicating a Type II-P SN about a month after explosion.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-03-10 01:53:50 - 2026-03-10 01:53:50 2461109.57905 - 2461109.57905 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
564293 2026-03-10 01:53:50 2461109.57905 19.737 0.154 19.81 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
w-P1 PS2_GPC2 2026-04-20 07:45:08 - 2026-04-20 07:45:08 2461150.82301 - 2461150.82301 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
577991 2026-04-20 07:45:08 2461150.82301 19.48 0.04 22 ABMag w-P1 PS2_GPC2 45 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2026-03-09 00:28:15 - 2026-03-09 00:28:15 2461108.51962 - 2461108.51962 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
564292 2026-03-09 00:28:15 2461108.51962 18.76 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-1 2026-03-02 01:01:30 - 2026-03-08 01:16:03 2461101.542706 - 2461107.552806 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
569345 2026-03-08 01:16:03 2461107.552806 19.5 0.2 ABMag L-GOTO GOTO-N_GOTO-1 180
569344 2026-03-02 01:01:30 2461101.542706 18.7 ABMag L-GOTO GOTO-N_GOTO-1 90 [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2026-03-17 05:35:43 - 2026-03-17 05:35:43 2461116.7331366 - 2461116.7331366 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
565364 2026-03-17 05:35:43 2461116.7331366 19.69 0.11 20.77 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-07-07 23:36:43 - 2025-07-07 23:36:43 2460864.483831 - 2460864.483831 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
565363 2025-07-07 23:36:43 2460864.483831 19.94 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [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
301491 2026-04-25 19:19:03 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 13:35:32.799 +13:40:57.44 2026-04-20 07:45:08.064 19.48 w-P1 PSN PS26bda Pan-STARRS N
297019 2026-03-22 23:04:43 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 13:35:32.745 +13:40:57.90 2026-03-08 01:16:02.784 19.5 L-GOTO Other GOTO26cfl GOTO N
294774 2026-03-17 08:30:03 BlackGEM_Bot1 L. Landsberg, H. Tranin, F. Stoppa et al. BlackGEM BlackGEM 13:35:32.797 +13:40:57.53 2026-03-17 05:35:43.000 19.69 BG-q-BlackGem PSN BGEM J133532.80+134057.5 BlackGEM N
294302 2026-03-12 13:33:28 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 13:35:32.789 +13:40:57.39 2026-03-10 01:53:49.920 19.737 wide-ATLAS PSN ATLAS26cwl ATLAS 2026TNSTR1025....1T N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23328 2026-03-23 09:21:06 Jozsef Vinko Jozsef Vinko (Konkoly / UT Austin), J. Craig Wheeler (UT Austin) TexSNs SN IIP 0.0229 1 TexSNs A classification spectrum was taken with the Hobby-Eberly Telescope (HET) Low Resolution Spectrograph 2 (LRS2). 2026TNSCR1253....1V
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
23330 2026-03-21 10:50:11 HET / HET-LRS 1500 Sergey Rostopchin, Crassie Crowe Panacea pipeline TexSNs tns_2026fjy_2026-03-21_10-50-11_HET_HET-LRS_TexSNs.dat Object The spectrum consists of broad P Cygni Balmer features indicating a Type II-P SN about a month after explosion.

Comments

TNS
System

Sat, 04/25/2026 - 19:19

Object coordinates updated

Object coordinates updated according to AT-report 301491 of Group Pan-STARRS
Previous RA, DEC: 13:35:32.797, +13:40:57.53 (203.886654, +13.682647)
Updated RA, DEC: 13:35:32.799, +13:40:57.44 (203.886661212, +13.6826234406)

TNS
System

Tue, 03/17/2026 - 08:30

Object coordinates updated

Object coordinates updated according to AT-report 294774 of Group BlackGEM
Previous RA, DEC: 13:35:32.789, +13:40:57.39 (203.88662, +13.682608)
Updated RA, DEC: 13:35:32.797, +13:40:57.53 (203.886654, +13.682647)