RA/DEC (2000)
21:02:30.263 -19:27:41.91
315.6260973 -19.4616408
Type
SN Ic-BL
Redshift
0.008089
Discovery ReportClassification Report
Related AstroNotes: 2026-279, 2026-280
Reporting Group
ZTF
Discovering Data Source
ZTF
Discovery Date
2026-09-25 05:26:52.998
TNS AT
Y
Public
Y
Host Name
ESO598-017
Comments
[Object cross-matched with ESO598-017]
Discovery Mag
15.334
Filter
g-ZTF
Reporter/s
Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2026acxa - 2026-09-30 18:28:00 Lesedi / Mookodi (ATLAS)z=
 ▌SN_2026acxa - 2026-09-29 22:44:22 LT / SPRAT (GOTO)z=
 ▌SN_2026acxa - 2026-09-26 20:29:00 BL41 / FOSC-E5535 (None)z=
 ▌SN_2026acxa - 2026-09-26 14:35:34 Lijiang-2.4m / YFOSC (LiONS)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

 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌P48_ZTF-Cam_i
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌ATLAS-HKO_ATLAS-02_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
24804 2026-09-30 18:28:00 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Mookodi bot ATLAS tns_2026acxa_2026-09-30_18-28-00_Lesedi_Mookodi_ATLAS.txt Object The classification target was automatically sent for follow-up by the Virtual Research Assistant (Stevance et al. 2025). Observations were programatically triggered using the ATLAS API Client (Stevance et al. 2026) and the SAAO Intelligent Observatory framework (Erasmus et al. 2024, Erasmus et al. 2025)
24800 2026-09-29 22:44:22 LT / SPRAT J. Mills, T. Killestein GOTO tns_2026acxa_2461313.447476_LT_SPRAT_GOTO.dat Object
24779 2026-09-26 20:29:00 BL41 / FOSC-E5535 5400 Claudio Balcon Claudio Balcon None tns_2026acxa_2026-09-26_20-29-00_BL41_FOSC-E5535_None.dat tns_2026acxa_2026-09-26_20-29-00_BL41_FOSC-E5535_None.fit Object
24797 2026-09-26 14:35:34 Lijiang-2.4m / YFOSC Jujia Zhang LiONS tns_2026acxa_2026-09-26_14-35-34.008_Lijiang-2.4m_YFOSC_LiONS.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2026-09-20 12:59:51 - 2026-09-25 11:47:21 2461304.041562 - 2461308.99122 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
621732 2026-09-25 11:47:21 2461308.99122 15.24 0.01 ABMag L-GOTO GOTO-S_GOTO-3 180
621731 2026-09-20 12:59:51 2461304.041562 19.7 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2026-09-19 02:38:23 - 2026-09-19 02:38:23 2461302.60999 - 2461302.60999 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
622535 2026-09-19 02:38:23 2461302.60999 18.82 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
i-ZTF P48_ZTF-Cam 2026-09-20 03:31:52 - 2026-09-20 03:31:52 2461303.6471296 - 2461303.6471296 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
621652 2026-09-20 03:31:52 2461303.6471296 19.3585 ABMag i-ZTF P48_ZTF-Cam [Last non detection]
r-ZTF P48_ZTF-Cam 2026-09-25 06:27:44 - 2026-09-25 06:27:44 2461308.7692593 - 2461308.7692593 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
621654 2026-09-25 06:27:44 2461308.7692593 15.3584 0.0278329 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2026-09-25 05:26:53 - 2026-09-25 05:26:53 2461308.7270023 - 2461308.7270023 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
621653 2026-09-25 05:26:53 2461308.7270023 15.334 0.0283053 ABMag g-ZTF P48_ZTF-Cam
orange-ATLAS ATLAS-HKO_ATLAS-02 2026-09-28 08:50:51 - 2026-09-28 08:50:51 2461311.86865 - 2461311.86865 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
622536 2026-09-28 08:50:51 2461311.86865 15.161 0.015 18.55 ABMag orange-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
325666 2026-09-28 16:07:35 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al. ATLAS ATLAS 21:02:30.265 -19:27:41.90 2026-09-28 08:50:51.360 15.161 orange-ATLAS PSN ATLAS26lvh ATLAS N
324921 2026-09-25 21:54:52 GOTO_bot D. O'Neill, K. Ackley, M. Dyer et al. GOTO GOTO 21:02:30.270 -19:27:41.94 2026-09-25 11:47:21.408 15.24 L-GOTO Other GOTO26kfm GOTO N
324888 2026-09-25 08:27:55 BTSbot_bot Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF ZTF ZTF 21:02:30.263 -19:27:41.91 2026-09-25 05:26:52.998 15.334 g-ZTF PSN ZTF26abxkuhv ZTF Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167). 2026TNSTR3877....1R N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
24796 2026-10-01 09:20:03 ATLAS_Class_Bot S. de Wet and H. F. Stevance on behalf of ATLAS and SAAO IO ATLAS SN Ic-BL 0.008089 1 ATLAS Fixing the redshift to the NED redshift of z=0.008089, the closest SNID-SAGE [1] match is the SN Ic-norm 1994I. However, the 8 next best matches are all Ic-BL SNe, so we refrain from changing the classification. Further observations are encouraged. [1] https://ui.adsabs.harvard.edu/abs/2026MNRAS.549g1066S/abstract 2026TNSCR3949....1W
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
24804 2026-09-30 18:28:00 Lesedi / Mookodi 600 N. Erasmus, S. Potter, C. van Gend, H. Worters, P. Rabe (all SAAO) Mookodi bot ATLAS tns_2026acxa_2026-09-30_18-28-00_Lesedi_Mookodi_ATLAS.txt Object The classification target was automatically sent for follow-up by the Virtual Research Assistant (Stevance et al. 2025). Observations were programatically triggered using the ATLAS API Client (Stevance et al. 2026) and the SAAO Intelligent Observatory framework (Erasmus et al. 2024, Erasmus et al. 2025)
24792 2026-09-30 15:39:34 GOTO_bot T. Killestein, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, A. Kumar, D. O'Neill, M. Pursiainen, on behalf of GOTO collaboration GOTO SN Ic-BL 0.008089 1 GOTO Spectrum consistent with Ic-BL SNe at the host galaxy redshift. Matching with SNID-SAGE suggests the transient is around maximum light. 2026TNSCR3934....1K
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
24800 2026-09-29 22:44:22 LT / SPRAT J. Mills, T. Killestein GOTO tns_2026acxa_2461313.447476_LT_SPRAT_GOTO.dat Object
24789 2026-09-29 13:15:56 Liping Li Zeyi Wang, Liping Li, Qian Zhai, Bo Wang, Jujia Zhang (YNAO); Xiaofeng Wang(THU) LiONS SN Ic-BL 0.008089 1 LiONS, YNTS The spectrum obtained by LJT is similar to that of an SN Ic-BL. 2026TNSCR3920....1W
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
24797 2026-09-26 14:35:34 Lijiang-2.4m / YFOSC Jujia Zhang LiONS tns_2026acxa_2026-09-26_14-35-34.008_Lijiang-2.4m_YFOSC_LiONS.dat Object
24771 2026-09-26 21:40:16 Claudio Balcon Claudio Balcon (Belluno A.O. ISSP) None SN Ic-BL 0.008089 1 GELATO Harutyunyan et al., 2008, A&A, 488, 383 (gelato@tng.iac.es) suggests that this low S/N spectrum resembles that of a SN type Ic-BL at the redshift of the host galaxy, value from NED. 2026TNSCR3892....1B
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
24779 2026-09-26 20:29:00 BL41 / FOSC-E5535 5400 Claudio Balcon Claudio Balcon None tns_2026acxa_2026-09-26_20-29-00_BL41_FOSC-E5535_None.dat tns_2026acxa_2026-09-26_20-29-00_BL41_FOSC-E5535_None.fit Object

Comments