RA/DEC (2000)
15:44:56.337 +35:56:08.44
236.2347364 +35.9356788
Type
SN Ia
Redshift
0.066
Discovery ReportClassification Report
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-01-16 14:34:09.984
TNS AT
Y
Public
Y
Discovery Mag
18.924
Filter
cyan-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_2026aku - 2026-01-19 13:10:53 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-N_GOTO-2_L
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌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
22838 2026-01-19 13:10:53 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2026aku_2026-01-19_13-10-52.514307_P60_SEDM_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-08-21 22:51:29 - 2026-01-25 06:49:26 2460909.452424 - 2461065.784331 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
553657 2026-01-25 06:49:26 2461065.784331 18.23 0.05 ABMag L-GOTO GOTO-N_GOTO-2 180
553656 2025-08-21 22:51:29 2460909.452424 19.1 ABMag L-GOTO GOTO-N_GOTO-2 360 [Last non detection]
r-ZTF P48_ZTF-Cam 2026-01-14 13:09:47 - 2026-01-16 11:50:18 2461055.0484606 - 2461056.9932639 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
551089 2026-01-16 11:50:18 2461056.9932639 19.165 0.149436 19.9788 ABMag r-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
551088 2026-01-14 13:09:47 2461055.0484606 20.0773 ABMag r-ZTF P48_ZTF-Cam 30 Robot [Last non detection] Data provided by ZTF
g-ZTF P48_ZTF-Cam 2026-01-12 13:07:03 - 2026-02-04 11:39:40 2461053.0465625 - 2461075.9858796 4
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
555742 2026-02-04 11:39:40 2461075.9858796 18.716 0.122946 ABMag g-ZTF P48_ZTF-Cam
551090 2026-01-16 12:55:25 2461057.0384838 19.2449 0.144889 20.2579 ABMag g-ZTF P48_ZTF-Cam 30 Robot Data provided by ZTF
555741 2026-01-14 11:56:18 2461054.9974306 20.2307 0.160117 ABMag g-ZTF P48_ZTF-Cam
555740 2026-01-12 13:07:03 2461053.0465625 20.0445 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-01-15 15:59:06 - 2026-01-15 15:59:06 2461056.16604 - 2461056.16604 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550908 2026-01-15 15:59:06 2461056.16604 19.07 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot [Last non detection]
cyan-ATLAS ATLAS-HKO_ATLAS-02 2026-01-16 14:34:10 - 2026-01-16 14:34:10 2461057.10706 - 2461057.10706 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550909 2026-01-16 14:34:10 2461057.10706 18.924 0.128 19.42 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot
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
289918 2026-02-04 11:48:16 BTSbot_bot Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al. ZTF ZTF 15:44:56.337 +35:56:08.44 2026-01-14 11:56:18.003 20.2307 g-ZTF PSN ZTF26aaeznkz ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). N
288863 2026-01-25 08:59:49 GOTO_bot G. Ramsay,K. Ackley,M. Dyer et al. GOTO GOTO 15:44:56.333 +35:56:08.24 2026-01-25 06:49:26.112 18.23 L-GOTO Other GOTO26abt GOTO N
287688 2026-01-18 01:04:51 ALeRCE F. Forster,F.E. Bauer,G. Pignata et al. ALeRCE ZTF 15:44:56.357 +35:56:08.14 2026-01-16 11:50:18.001 19.165 r-ZTF PSN SDSS J154456.33+355608.2 ZTF18aajaubg ZTF Early SN candidate (g-rise > 0.48+-0.07 mag/day, r-rise > 0.47+-0.08 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/ZTF18aajaubg N
287593 2026-01-16 23:19:26 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland (IfA et al. ATLAS ATLAS 15:44:56.343 +35:56:08.92 2026-01-16 14:34:09.984 18.924 cyan-ATLAS PSN ATLAS26asn ATLAS 2026TNSTR.180....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
22837 2026-01-21 23:51:31 ZTF_Bot1 C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore ZTF SN Ia 0.066 1 ZTF 2026TNSCR.281....1F
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
22838 2026-01-19 13:10:53 P60 / SEDM 2700 SEDmRobot auto ZTF tns_2026aku_2026-01-19_13-10-52.514307_P60_SEDM_ZTF.ascii Object

Comments

TNS
System

Wed, 02/04/2026 - 11:48

Object coordinates updated

Object coordinates updated according to AT-report 289918 of Group ZTF
Previous RA, DEC: 15:44:56.357, +35:56:08.14 (236.23482067397, +35.935594768121)
Updated RA, DEC: 15:44:56.337, +35:56:08.44 (236.2347364, +35.9356788)

TNS
System

Sun, 01/25/2026 - 08:59

Object coordinates updated

Object coordinates updated according to AT-report 287688 of Group ZTF
Previous RA, DEC: 15:44:56.357, +35:56:08.14 (236.23482067397, +35.935594768121)
Updated RA, DEC: 15:44:56.357, +35:56:08.14 (236.23482067397, +35.935594768121)

TNS
System

Sun, 01/18/2026 - 01:04

Object coordinates updated

Object coordinates updated according to AT-report 287688 of Group ZTF
Previous RA, DEC: 15:44:56.343, +35:56:08.92 (236.23476375, +35.9358125)
Updated RA, DEC: 15:44:56.357, +35:56:08.14 (236.23482067397, +35.935594768121)