RA/DEC (2000)
08:36:03.273 +28:42:35.25
129.01363686923 +28.709792907692
Type
SN Ia
Redshift
0.107497
Discovery ReportClassification Report
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2026-03-18 07:01:48.003
TNS AT
Y
Public
Y
Host Name
SDSS J083603.26+284235.1
Discovery Mag
20.5627
Filter
g-ZTF
Reporter/s
A. Munoz-Arancibia, G. Pignata, F.E. Bauer, F. Forster, A. Mourao, J. Correa-Orellana, H. Bommireddy, S. Jurado, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, F. Andrades, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026gul - 2026-04-03 05:58:33 HET / HET-LRS (FLEET)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
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▌Show N II at z=vexp= km/s
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▌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
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▌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
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_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
23421 2026-04-03 05:58:33 HET / HET-LRS 2807 HET Megan Newsome FLEET tns_2026gul_2026-04-03_05-58-33_HET_HET-LRS_FLEET.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-04-05 22:05:37 - 2026-04-05 22:05:37 2461136.42057 - 2461136.42057 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
574153 2026-04-05 22:05:37 2461136.42057 19.467 0.149 19.88 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
r-ZTF P48_ZTF-Cam 2026-03-18 06:55:46 - 2026-03-20 04:54:11 2461117.7887269 - 2461119.704294 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
568889 2026-03-20 04:54:11 2461119.704294 20.0206 0.166871 20.3848 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
568886 2026-03-18 06:55:46 2461117.7887269 20.2953 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2026-03-17 06:25:53 - 2026-03-20 06:07:30 2461116.7679745 - 2461119.7552083 5
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
568890 2026-03-20 06:07:30 2461119.7552083 19.8174 0.162676 20.6265 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
568888 2026-03-19 08:52:16 2461118.8696296 19.8987 0.233589 19.9687 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
568887 2026-03-18 07:01:48 2461117.7929167 20.5627 0.332262 20.3284 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
571916 2026-03-18 07:01:48 2461117.7929167 20.5627 0.332262 20.3284 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
571915 2026-03-17 06:25:53 2461116.7679745 20.335 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-04-05 08:09:09 - 2026-04-05 08:09:09 2461135.83969 - 2461135.83969 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
574152 2026-04-05 08:09:09 2461135.83969 19.25 ABMag orange-ATLAS ATLAS-HKO_ATLAS-02 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
299535 2026-04-10 09:21:58 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 08:36:03.259 +28:42:35.07 2026-04-05 22:05:37.248 19.467 wide-ATLAS PSN ATLAS26dwu ATLAS N
298315 2026-04-02 18:44:26 Fink Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker Fink ZTF 08:36:03.273 +28:42:35.25 2026-03-18 07:01:48.003 20.5627 g-ZTF PSN ZTF26aanlpkr ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aanlpkr N
296811 2026-03-20 23:19:19 ALeRCE A. Munoz-Arancibia, G. Pignata, F.E. Bauer et al. ALeRCE ZTF 08:36:03.281 +28:42:35.28 2026-03-18 07:01:48.003 20.5627 g-ZTF PSN SDSS J083603.26+284235.1 ZTF26aanlpkr ZTF Early SN candidate (r-rise > 0.14+-0.09 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF26aanlpkr 2026TNSTR1193....1M N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
23419 2026-04-03 20:11:38 Megan Newsome Megan Newsome (UT Austin), Sebastian Gomez (UT Austin) FLEET SN Ia 0.107497 1 1 FLEET AT2026gul was selected as a nuclear transient by the package iinuclear (Gomez, https://github.com/gmzsebastian/iinuclear). The redshift of z = 0.107497 was determined from the transient features. We find a best match to SNe Ia using SNID-SAGE (Stoppa et al. in prep: https://github.com/FiorenSt/SNID-SAGE). 2026TNSCR1411....1N
Related files
File Comments Last Modified (UT) Modified By
tns_2026gul_atrep_23419_FLEET.png SNID-SAGE match to SN2005hf, a SN Ia. 2026-04-03 20:11:38 Megan Newsome
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
23421 2026-04-03 05:58:33 HET / HET-LRS 2807 HET Megan Newsome FLEET tns_2026gul_2026-04-03_05-58-33_HET_HET-LRS_FLEET.dat Object

Comments

TNS
System

Thu, 04/02/2026 - 18:44

Object coordinates updated

Object coordinates updated according to AT-report 298315 of Group ZTF
Previous RA, DEC: 08:36:03.281, +28:42:35.28 (129.01366950618, +28.709799671333)
Updated RA, DEC: 08:36:03.273, +28:42:35.25 (129.01363686923, +28.709792907692)