RA/DEC (2000)
01:28:20.623 +40:13:26.65
22.0859289534 +40.2240707245
Type
SN Ibn/Icn
Redshift
0.025
Discovery ReportClassification Report
Related AstroNotes: 2026-235, 2026-239
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2026-08-01 12:06:35.712
TNS AT
Y
Public
Y
Discovery Mag
18.264
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, J. Weston, X. Sheng, C. R. Angus, D. Magill, A. J. Smith, L. Shingles (QUB), A. Aamer (Arizona), P. Ramsden (Birmingham/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), T. Moore, A. Rest (STScI), T.-W. Chen (NCU), C. Deasy-Millar (TCD), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026wpd - 2026-08-04 02:22:47 LT / SPRAT (OxQUB)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

 ▌PS2_GPC2_w
 ▌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
24427 2026-08-04 02:22:47 LT / SPRAT 1000 Robotic OxQUB tns_2026wpd_2026-08-04_02-22-46.788_LT_SPRAT_OxQUB.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
w-P1 PS2_GPC2 2026-08-09 14:17:42 - 2026-08-09 14:17:42 2461262.09563 - 2461262.09563 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
611913 2026-08-09 14:17:42 2461262.09563 16.82 0.01 22 ABMag w-P1 PS2_GPC2 45 Robot
r-ZTF P48_ZTF-Cam 2026-08-03 10:16:14 - 2026-08-03 10:16:14 2461255.9279398 - 2461255.9279398 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
609025 2026-08-03 10:16:14 2461255.9279398 16.9242 0.0341685 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2026-07-25 11:29:15 - 2026-08-03 09:07:09 2461246.9786458 - 2461255.8799653 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
609024 2026-08-03 09:07:09 2461255.8799653 16.6861 0.0364507 ABMag g-ZTF P48_ZTF-Cam
609023 2026-07-25 11:29:15 2461246.9786458 21.0137 ABMag g-ZTF P48_ZTF-Cam [Last non detection]
orange-ATLAS ATLAS-MLO_ATLAS-01 2026-07-30 14:23:57 - 2026-08-01 12:06:36 2461252.09997 - 2461254.00458 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
608286 2026-08-01 12:06:36 2461254.00458 18.264 0.155 18.82 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
608285 2026-07-30 14:23:57 2461252.09997 18.79 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
319965 2026-08-11 11:55:52 PS1_Bot1 K. C. Chambers, T. de Boer, J. Fairlamb et al. Pan-STARRS Pan-STARRS 01:28:20.623 +40:13:26.65 2026-08-09 14:17:42.432 16.82 w-P1 PSN PS26hhk Pan-STARRS N
318103 2026-08-03 17:56:01 Fritz Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al. ZTF ZTF 01:28:20.620 +40:13:26.76 2026-08-03 09:07:09.001 16.6861 g-ZTF PSN ZTF26abliaof ZTF N
317648 2026-08-02 08:40:06 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 01:28:20.674 +40:13:27.23 2026-08-01 12:06:35.712 18.264 orange-ATLAS PSN ATLAS26jiy ATLAS 2026TNSTR3116....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
24420 2026-08-05 22:34:51 Shubham Srivastav S. Srivastav (Oxford), C. R. Angus, D. Magill, M. Nicholl, X. Sheng, D. R. Young (QUB), S. J. Smartt, K. W. Smith (Oxford/QUB), J. H. Gillanders, H. F. Stevance, (Oxford), T.-W. Chen (NCU), T. Moore (STScI) OxQUB SN Ibn/Icn 0.025 1 OxQUB Blue colour, rapid light curve evolution, abs mag around -19. Spectrum shows CIII/NIII complex and prominent CIII 5696 emission. Narrow H-alpha emission could be from host given proximity to host galaxy core. Spectrum is similar to the transitional Ibn/Icn event SN2023xgo. 2026TNSCR3175....1S
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
24427 2026-08-04 02:22:47 LT / SPRAT 1000 Robotic OxQUB tns_2026wpd_2026-08-04_02-22-46.788_LT_SPRAT_OxQUB.txt Object

Comments

TNS
System

Tue, 08/11/2026 - 11:55

Object coordinates updated

Object coordinates updated according to AT-report 319965 of Group Pan-STARRS
Previous RA, DEC: 01:28:20.620, +40:13:26.76 (22.0859153, +40.2240987)
Updated RA, DEC: 01:28:20.623, +40:13:26.65 (22.0859289534, +40.2240707245)

TNS
System

Mon, 08/03/2026 - 17:56

Object coordinates updated

Object coordinates updated according to AT-report 318103 of Group ZTF
Previous RA, DEC: 01:28:20.674, +40:13:27.23 (22.08614, +40.2242316667)
Updated RA, DEC: 01:28:20.620, +40:13:26.76 (22.0859153, +40.2240987)