RA/DEC (2000)
22:51:21.878 +32:21:10.23
342.8411571 +32.3528404
Type
SN II
Redshift
0.0214
Discovery ReportClassification Report
Related AstroNotes: 2026-129
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-01-16 05:21:47.808
TNS AT
Y
Public
Y
Discovery Mag
18.785
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_2026akp - 2026-05-08 05:01:30 NOT / ALFOSC (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

 ▌ATLAS-TDO_ATLAS-05_wide
 ▌GOTO-N_GOTO-2_L
 ▌P48_ZTF-Cam_r
 ▌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
23676 2026-05-08 05:01:30 NOT / ALFOSC 900 Astrid Lind Bouquin Anjasha Gangopadhyay ZTF tns_2026akp_2461168.70938_NOT_ALFOSC_ZTF.ascii Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
wide-ATLAS ATLAS-TDO_ATLAS-05 2026-01-12 20:37:35 - 2026-01-12 20:37:35 2461053.35943 - 2461053.35943 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550759 2026-01-12 20:37:35 2461053.35943 19.7 ABMag wide-ATLAS ATLAS-TDO_ATLAS-05 30 Robot [Last non detection]
L-GOTO GOTO-N_GOTO-2 2025-12-09 20:07:27 - 2026-05-21 03:20:11 2461019.338508 - 2461181.639023 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
584325 2026-05-21 03:20:11 2461181.639023 18.89 0.06 ABMag L-GOTO GOTO-N_GOTO-2 360
584324 2025-12-09 20:07:27 2461019.338508 20.1 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
r-ZTF P48_ZTF-Cam 2026-03-27 12:50:36 - 2026-03-27 12:54:02 2461127.0351389 - 2461127.0375231 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
570590 2026-03-27 12:54:02 2461127.0375231 18.1165 0.158515 ABMag r-ZTF P48_ZTF-Cam
570589 2026-03-27 12:50:36 2461127.0351389 17.8535 0.144498 ABMag r-ZTF P48_ZTF-Cam
cyan-ATLAS ATLAS-HKO_ATLAS-02 2026-01-16 05:21:48 - 2026-01-16 05:21:48 2461056.72347 - 2461056.72347 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
550760 2026-01-16 05:21:48 2461056.72347 18.785 0.135 19.31 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
304763 2026-05-21 10:09:32 GOTO_bot G. Ramsay, D. O'Neill, K. Ackley et al. GOTO GOTO 22:51:21.923 +32:21:09.81 2026-05-21 03:20:11.328 18.89 L-GOTO Other GOTO26fad GOTO N
297577 2026-03-27 16:36:25 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 22:51:21.878 +32:21:10.23 2026-03-27 12:50:36.000 17.8535 r-ZTF PSN ZTF26aaqklxk ZTF N
287517 2026-01-16 14:08:30 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 22:51:21.881 +32:21:10.70 2026-01-16 05:21:47.808 18.785 cyan-ATLAS PSN ATLAS26ara 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
23673 2026-05-08 13:57:37 Ragnhild Lunnan Ragnhild Lunnan, Anjasha Gangopadhyay, Avinash Singh, Yang Hu ZTF SN II 0.0214 1 ZTF Matches with a Type II SN 2 months after maximum using SNID-SAGE. 2026TNSCR2002....1L
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
23676 2026-05-08 05:01:30 NOT / ALFOSC 900 Astrid Lind Bouquin Anjasha Gangopadhyay ZTF tns_2026akp_2461168.70938_NOT_ALFOSC_ZTF.ascii Object

Comments

TNS
System

Fri, 03/27/2026 - 16:36

Object coordinates updated

Object coordinates updated according to AT-report 297577 of Group ZTF
Previous RA, DEC: 22:51:21.881, +32:21:10.70 (342.8411725, +32.3529725)
Updated RA, DEC: 22:51:21.878, +32:21:10.23 (342.8411571, +32.3528404)