RA/DEC (2000)
00:41:35.759 -05:04:14.33
10.39899486 -5.07064721
Type
SLSN-II
Redshift
0.1203
Related AstroNotes: 2026-6
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-01-08 20:28:15.744
TNS AT
Y
Public
Y
Discovery Mag
18.491
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)

Spectra

 SN_2026gz - 2026-01-19 04:59:31 Keck1 / LRIS (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
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Show N V at z=vexp= km/s
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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_cyan
   
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
22845 2026-01-19 04:59:31 Keck1 / LRIS 300 Erica Hammerstein, Ryan Chornock Ryan Chornock ZTF tns_2026gz_2026-01-19_04-59-31_Keck1_LRIS_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-01-08 20:28:16 - 2026-01-08 20:28:16 2461049.35296 - 2461049.35296 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547710 2026-01-08 20:28:16 2461049.35296 18.491 0.076 19.33 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot
r-ZTF P48_ZTF-Cam 2025-12-21 04:04:37 - 2026-01-09 02:32:13 2461030.6698727 - 2461049.605706 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548029 2026-01-09 02:32:13 2461049.605706 18.831 0.109364 19.7846 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
551322 2026-01-09 02:32:13 2461049.605706 18.831 0.109364 19.7846 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF, classified by Fink
548028 2025-12-21 04:04:37 2461030.6698727 20.4403 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
551321 2025-12-21 04:04:37 2461030.6698727 20.4403 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF, classified by Fink
g-ZTF P48_ZTF-Cam 2026-01-09 03:03:45 - 2026-01-09 03:03:45 2461049.6276042 - 2461049.6276042 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548030 2026-01-09 03:03:45 2461049.6276042 18.6039 0.125541 19.5372 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
cyan-ATLAS ATLAS-HKO_ATLAS-02 2026-01-08 07:48:42 - 2026-01-08 07:48:42 2461048.82549 - 2461048.82549 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547709 2026-01-08 07:48:42 2461048.82549 14.77 ABMag cyan-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
287786 2026-01-18 19:45:50 Fink Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al. Fink ZTF 00:41:35.759 -05:04:14.33 2026-01-09 02:32:12.998 18.831 r-ZTF PSN ZTF26aaaagat ZTF Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aaaagat N
286230 2026-01-10 00:39:04 ALeRCE A. Munoz-Arancibia,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 00:41:35.751 -05:04:14.41 2026-01-09 02:32:12.998 18.831 r-ZTF PSN SDSS J004135.78-050414.6 ZTF26aaaagat ZTF Early SN candidate (g-rise > 0.10+-0.01 mag/day, r-rise > 0.08+-0.01 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/ZTF26aaaagat N
286085 2026-01-09 07:56:55 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 00:41:35.782 -05:04:14.32 2026-01-08 20:28:15.744 18.491 wide-ATLAS PSN ATLAS26acp ATLAS 2026TNSTR..72....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
22844 2026-01-23 00:01:41 ZTF_Bot1 R. Chornock, J. Castaneda Jaimes, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) ZTF SLSN-II 0.1203 1 ZTF 2026TNSCR.306....1C
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
22845 2026-01-19 04:59:31 Keck1 / LRIS 300 Erica Hammerstein, Ryan Chornock Ryan Chornock ZTF tns_2026gz_2026-01-19_04-59-31_Keck1_LRIS_ZTF.ascii Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 287786 of Group ZTF
Previous RA, DEC: 00:41:35.751, -05:04:14.41 (10.398960592577, -5.0706698862453)
Updated RA, DEC: 00:41:35.759, -05:04:14.33 (10.39899486, -5.07064721)

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 286230 of Group ZTF
Previous RA, DEC: 00:41:35.782, -05:04:14.32 (10.3990908333, -5.07064416667)
Updated RA, DEC: 00:41:35.751, -05:04:14.41 (10.398960592577, -5.0706698862453)