RA/DEC (2000)
09:55:01.708 -18:44:01.81
148.757115296 -18.733836202
Type
SN Ia
Redshift
0.030091
Discovery ReportClassification Report
Reporting Group
GOTO
Discovering Data Source
GOTO
Discovery Date
2026-04-08 09:17:48.768
TNS AT
Y
Public
Y
Discovery Mag
20.35
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_2026iyr - 2026-04-17 04:41:23 P60 / SEDM (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

 ▌GOTO-S_GOTO-3_L
 ▌PS2_GPC2_r
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
   
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
23496 2026-04-17 04:41:23 P60 / SEDM 2700 SEDmRobot ZTF tns_2026iyr_2026-04-17_04-41-23.053581_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2026-04-07 10:01:56 - 2026-04-08 09:17:49 2461137.918015 - 2461138.88737 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
573774 2026-04-08 09:17:49 2461138.88737 20.35 0.19 ABMag L-GOTO GOTO-S_GOTO-3 180
573773 2026-04-07 10:01:56 2461137.918015 20.5 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
r-P1 PS2_GPC2 2026-04-15 08:01:28 - 2026-04-15 08:01:28 2461145.83435 - 2461145.83435 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
575540 2026-04-15 08:01:28 2461145.83435 17.43 0.01 20.6 ABMag r-P1 PS2_GPC2 27 Robot
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-04-16 03:34:18 - 2026-04-16 03:34:18 2461146.64882 - 2461146.64882 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
575889 2026-04-16 03:34:18 2461146.64882 17.253 0.047 19.55 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
cyan-ATLAS ATLAS-STH_ATLAS-03 2026-04-14 20:58:06 - 2026-04-14 20:58:06 2461145.37368 - 2461145.37368 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
575888 2026-04-14 20:58:06 2461145.37368 19.45 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
r-ZTF P48_ZTF-Cam 2026-04-05 03:31:08 - 2026-04-08 03:32:22 2461135.6466204 - 2461138.6474769 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
574289 2026-04-08 03:32:22 2461138.6474769 20.4077 0.185094 ABMag r-ZTF P48_ZTF-Cam
574288 2026-04-05 03:31:08 2461135.6466204 20.5273 ABMag r-ZTF P48_ZTF-Cam [Last non detection]
g-ZTF P48_ZTF-Cam 2026-04-10 05:49:09 - 2026-04-10 05:49:09 2461140.7424653 - 2461140.7424653 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
574290 2026-04-10 05:49:09 2461140.7424653 19.3229 0.152597 ABMag g-ZTF P48_ZTF-Cam
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
300436 2026-04-16 23:19:29 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 09:55:01.716 -18:44:01.89 2026-04-16 03:34:18.048 17.253 orange-ATLAS PSN ATLAS26ejj ATLAS N
300275 2026-04-16 05:28:37 YSE_Bot1 D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al. YSE Pan-STARRS 09:55:01.708 -18:44:01.81 2026-04-15 08:01:27.840 17.43 r-P1 PSN PS26bae Pan-STARRS N
299598 2026-04-10 11:23:51 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 09:55:01.703 -18:44:02.00 2026-04-08 03:32:22.004 20.4077 r-ZTF PSN ZTF26aaryqsz ZTF N
299331 2026-04-09 10:06:41 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 09:55:01.698 -18:44:01.81 2026-04-08 09:17:48.768 20.35 L-GOTO Other GOTO26czb GOTO 2026TNSTR1498....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
23494 2026-04-18 04:59:28 ZTF_Bot1 J. Sollerman, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SN Ia 0.030091 1 ZTF 2026TNSCR1714....1S
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
23496 2026-04-17 04:41:23 P60 / SEDM 2700 SEDmRobot ZTF tns_2026iyr_2026-04-17_04-41-23.053581_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Thu, 04/16/2026 - 05:28

Object coordinates updated

Object coordinates updated according to AT-report 300275 of Group Pan-STARRS
Previous RA, DEC: 09:55:01.703, -18:44:02.00 (148.7570957, -18.7338898)
Updated RA, DEC: 09:55:01.708, -18:44:01.81 (148.757115296, -18.733836202)

TNS
System

Fri, 04/10/2026 - 11:23

Object coordinates updated

Object coordinates updated according to AT-report 299598 of Group ZTF
Previous RA, DEC: 09:55:01.698, -18:44:01.81 (148.757075, -18.733836)
Updated RA, DEC: 09:55:01.703, -18:44:02.00 (148.7570957, -18.7338898)