RA/DEC (2000)
09:17:41.852 -20:53:17.87
139.424383 -20.888297
Type
SN Ia
Redshift
0.055
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-01-05 23:28:20.064
TNS AT
Y
Public
Y
Discovery Mag
18.32
Filter
orange-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_2026ab - 2026-01-08 13:57:36 UH88 / SNIFS (SCAT)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
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_orange
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌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
22741 2026-01-08 13:57:36 UH88 / SNIFS 1800 Hinkle SCAT tns_2026ab_2026-01-08_13-57-36_UH88_SNIFS_SCAT.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2025-12-25 13:52:48 - 2026-01-07 13:16:49 2461035.078331 - 2461048.053341 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547406 2026-01-07 13:16:49 2461048.053341 18.21 0.08 ABMag L-GOTO GOTO-S_GOTO-3 180
547405 2025-12-25 13:52:48 2461035.078331 20.1 ABMag L-GOTO GOTO-S_GOTO-3 135 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-01-04 06:52:18 - 2026-01-04 06:52:18 2461044.78632 - 2461044.78632 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547139 2026-01-04 06:52:18 2461044.78632 18.31 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
orange-ATLAS ATLAS-STH_ATLAS-03 2026-01-05 23:28:20 - 2026-01-05 23:28:20 2461046.47801 - 2461046.47801 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547140 2026-01-05 23:28:20 2461046.47801 18.32 0.15 18.68 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-12-29 05:26:28 - 2025-12-31 04:51:25 2461038.726713 - 2461040.7023727 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
547205 2025-12-31 04:51:25 2461040.7023727 19.38 0.17 19.92 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
547204 2025-12-29 05:26:28 2461038.726713 20.6 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2026-01-09 11:02:36 - 2026-01-09 11:02:36 2461049.9601389 - 2461049.9601389 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548013 2026-01-09 11:02:36 2461049.9601389 18.1221 0.109171 19.0309 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
g-ZTF P48_ZTF-Cam 2025-12-22 10:37:04 - 2025-12-22 10:37:04 2461031.9424074 - 2461031.9424074 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
548012 2025-12-22 10:37:04 2461031.9424074 20.2362 ABMag g-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
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
286224 2026-01-10 00:39:04 ALeRCE A. Munoz-Arancibia,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 09:17:41.876 -20:53:18.27 2026-01-09 11:02:36.001 18.1221 r-ZTF PSN 2MASX J09174175-2053171 ZTF26aaadmfs ZTF Early SN candidate (r-rise > 0.10+-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/ZTF26aaadmfs N
285941 2026-01-07 21:48:33 GOTO_bot B. Godson,G. Ramsay,K. Ackley et al. GOTO GOTO 09:17:41.847 -20:53:17.98 2026-01-07 13:16:48.576 18.21 L-GOTO Other GOTO26ab GOTO N
285832 2026-01-07 09:41:03 BlackGEM_Bot1 P. Groot,H. Tranin,F. Stoppa et al. BlackGEM BlackGEM 09:17:41.852 -20:53:17.87 2025-12-31 04:51:25.000 19.38 BG-q-BlackGem PSN BGEM J091741.85-205317.9 BlackGEM N
285790 2026-01-06 08:06:27 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 09:17:41.858 -20:53:18.11 2026-01-05 23:28:20.064 18.32 orange-ATLAS PSN ATLAS26aax ATLAS 2026TNSTR..39....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
22740 2026-01-08 15:27:07 Jason Hinkle Jason Hinkle (UIUC) on behalf of SCAT SCAT SN Ia 0.055 1 SCAT Redshift estimated from narrow host-galaxy emission lines. Cross-correlation with SNID-SAGE (Stoppa 2025) gives good matches to normal SNe Ia at this redshift. 2026TNSCR..69....1H
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
22741 2026-01-08 13:57:36 UH88 / SNIFS 1800 Hinkle SCAT tns_2026ab_2026-01-08_13-57-36_UH88_SNIFS_SCAT.dat Object

Comments

TNS
System

Wed, 01/07/2026 - 09:41

Object coordinates updated

Object coordinates updated according to AT-report 285832 of Group BlackGEM
Previous RA, DEC: 09:17:41.858, -20:53:18.11 (139.424408333, -20.8883633333)
Updated RA, DEC: 09:17:41.852, -20:53:17.87 (139.424383, -20.888297)