RA/DEC (2000)
14:03:04.631 +08:56:52.98
210.76929743333 +8.9480512
Type
SN Ia
Redshift
0.02
Discovery ReportClassification Report
Related AstroNotes: 2026-205, 2026-207
Reporting Group
ALeRCE
Discovering Data Source
ZTF
Discovery Date
2026-06-25 06:27:06.998
TNS AT
Y
Public
Y
Host Name
SDSS J140304.46+085651.0
Host Redshift
0.02306595
Discovery Mag
18.5459
Filter
g-ZTF
Reporter/s
A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, S. Jurado, A. Mourao, A. Alvarez, F. Andrades, A. Bayo, G. Cabrera-Vives, M. Catelan, P.A. Estevez, S. Eyheramendy, B. Galindo, L. Hernandez-Garcia, H. Larranaga, K. Medina, D. Moreno-Cartagena, E. Munoz, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, on behalf of the ALeRCE broker
14 03 4.631 +08 56 52.98
FoV: 2.38'
+–
×
×
Go to:
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

Observed Wavelength(Å)
4000
5000
6000
7000
8000
9000
4080
5100
6120
7140
8160
9180
0.50
0.75
1.00
1.25
1.50
1.75
Rest Wavelength (Å)
 ▌SN_2026qbu - 2026-06-25 00:00:00 Gemini-S / GMOS-S (GeminiClass)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
z-step:   v-step: 
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

Mag
61208
61210
61212
61214
61216
61218
19
21
23
25
27
29
18.0
18.5
19.0
19.5
20.0
-16.6
-16.1
-15.6
-15.1
-14.6
Days ago
MJD
Abs. Mag. (dm=34.64)
 ▌GOTO-N_GOTO-2_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌GOTO-N_GOTO-1_L
 ▌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
24151 2026-06-25 00:00:00 Gemini-S / GMOS-S Gemini GeminiClass tns_2026qbu_2026-06-25_Gemini-S_GMOS-S_GeminiClass.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2026-06-16 21:37:19 - 2026-06-16 21:37:19 2461208.400917 - 2461208.400917 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
596490 2026-06-16 21:37:19 2461208.400917 19.9 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-06-25 01:37:28 - 2026-06-25 01:37:28 2461216.56769 - 2461216.56769 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
595879 2026-06-25 01:37:28 2461216.56769 17.949 0.87 18.72 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
L-GOTO GOTO-N_GOTO-1 2026-06-25 23:44:13 - 2026-06-25 23:44:13 2461217.48904 - 2461217.48904 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
596491 2026-06-25 23:44:13 2461217.48904 18.21 0.08 ABMag L-GOTO GOTO-N_GOTO-1 180
r-ZTF P48_ZTF-Cam 2026-06-25 05:07:35 - 2026-06-25 05:07:35 2461216.7135995 - 2461216.7135995 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
594498 2026-06-25 05:07:35 2461216.7135995 20.0715 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
595520 2026-06-25 05:07:35 2461216.7135995 20.0715 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2026-06-25 06:27:07 - 2026-06-27 04:02:59 2461216.768831 - 2461218.6687384 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
595523 2026-06-27 04:02:59 2461218.6687384 18.164 0.0896305 19.2624 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
595522 2026-06-26 04:55:52 2461217.705463 18.4631 0.0947571 19.7255 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
594499 2026-06-25 06:27:07 2461216.768831 18.5459 0.0903655 19.8098 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
595521 2026-06-25 06:27:07 2461216.768831 18.5459 0.0903655 19.8098 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-06-23 07:01:22 - 2026-06-23 07:01:22 2461214.79262 - 2461214.79262 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
595878 2026-06-23 07:01:22 2461214.79262 19.09 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
311230 2026-06-30 09:37:45 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 14:03:04.587 +08:56:52.93 2026-06-25 23:44:13.056 18.21 L-GOTO Other GOTO26gle GOTO This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. This candidate was flagged by volunteers: Svetoslav Alexandrov, Rosemary Billington, Andrey CRB Gorokhov, A. Karunakaran, M.T. Mazzucato. The most likely subtype for this transient is supernova (77.8% consensus). N
310780 2026-06-28 15:26:07 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 14:03:04.610 +08:56:52.88 2026-06-25 01:37:28.416 17.949 orange-ATLAS PSN ATLAS26hyp ATLAS N
310456 2026-06-28 03:07:49 ALeRCE F. Forster, F.E. Bauer, G. Pignata et al. ALeRCE ZTF 14:03:04.631 +08:56:52.98 2026-06-25 06:27:06.998 18.5459 g-ZTF PSN SDSS J140304.46+085651.0 ZTF26abdukrq ZTF Early SN candidate (g-rise > 0.67+-0.05 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/ZTF26abdukrq N
310004 2026-06-25 15:18:35 ALeRCE A. Munoz-Arancibia, F.E. Bauer, G. Pignata et al. ALeRCE ZTF 14:03:04.636 +08:56:53.05 2026-06-25 06:27:06.998 18.5459 g-ZTF PSN SDSS J140304.46+085651.0 ZTF26abdukrq ZTF Early SN candidate (g-rise > 0.67+-0.05 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/ZTF26abdukrq 2026TNSTR2697....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
24145 2026-06-26 21:14:58 Priscila Pessi P. Pessi (NCBJ), A. Cikota (NOIRLab/Gemini South), K. Silva (NOIRLab/Gemini South), P. King (NOIRLab/Gemini South), P. Candia (NOIRLab/Gemini South), D. May (NOIRLab/Gemini South), V. Firpo (NOIRLab/Gemini South), F. Gran (NOIRLab/Gemini South), L. Magill (NOIRLab/Gemini South), R. Ruiz-Carmona (NOIRLab/Gemini South), S. Panda (NOIRLab/Gemini South), J. Font-Serra (NOIRLab/Gemini South), R. Angeloni (NOIRLab/Gemini South), V. Kalari (NOIRLab/Gemini South), C. Rodriguez (NOIRLab/Gemini South), J.-E. Heo (NOIRLab/Gemini South), T. Ahumada (NOIRLab/ SOAR), R. Cartier (University of Antofagasta), E. Sabbi (ISSI Bern), S. Cikota (CAHA) GeminiClass SN Ia 0.02 1 GeminiClass 2026TNSCR2717....1P
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
24151 2026-06-25 00:00:00 Gemini-S / GMOS-S Gemini GeminiClass tns_2026qbu_2026-06-25_Gemini-S_GMOS-S_GeminiClass.txt Object

Comments

TNS
System

Tue, 06/30/2026 - 09:37

Object coordinates updated

Object coordinates updated according to AT-report 310456 of Group ZTF
Previous RA, DEC: 14:03:04.631, +08:56:52.98 (210.76929743333, +8.9480512)
Updated RA, DEC: 14:03:04.631, +08:56:52.98 (210.76929743333, +8.9480512)

TNS
System

Sun, 06/28/2026 - 15:26

Object coordinates updated

Object coordinates updated according to AT-report 310456 of Group ZTF
Previous RA, DEC: 14:03:04.631, +08:56:52.98 (210.76929743333, +8.9480512)
Updated RA, DEC: 14:03:04.631, +08:56:52.98 (210.76929743333, +8.9480512)

TNS
System

Sun, 06/28/2026 - 03:07

Object coordinates updated

Object coordinates updated according to AT-report 310456 of Group ZTF
Previous RA, DEC: 14:03:04.636, +08:56:53.05 (210.7693176, +8.9480703)
Updated RA, DEC: 14:03:04.631, +08:56:52.98 (210.76929743333, +8.9480512)