2026fcf | Transient Name Server

RA/DEC (2000)

03:42:32.532 -04:17:53.74

55.63555 -4.29826

Type

SN Ia

Redshift

0.01477

Discovery Report Classification Report

Reporting Group

ASAS-SN

Discovering Data Source

ASAS-SN

Discovery Date

2026-03-08 00:57:36.000

TNS AT

Public

Host Name

IC 0347

Host Redshift

0.01477

Discovery Mag

15.2

Filter

g-Sloan

Reporter/s

K. Z. Stanek, for the ASAS-SN team

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

ASASSN-4_Leavitt_g

▌

ASASSN-3_Paczynski_g

Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)

Spectra

Select	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
	23178	2026-03-09 17:59:38	Lesedi / Mookodi	600	N. Erasmus, S. Potter, C. van Gend, H. Worters, S. Chandra, D. Cunnama, M. Hlakola, P. Rabe, R. Julie (all SAAO)	Simon de Wet	BlackGEM	tns_2026fcf_2026-03-09_17-59-38_Lesedi_Mookodi_BlackGEM.csv		Object			The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager [1] as part of the “IO” rapid follow-up program [2]. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/1.JATIS.10.2.025005 [2] https://doi.org/10.1117/12.3015250
Binning factor: (rounded to nearest integer >1) Mouse hovers at WL: 0 (rest), 0 (observed) ▌Show H at z=v_exp= km/s ▌Show He at z=v_exp= km/s ▌Show He II at z=v_exp= km/s ▌Show C II at z=v_exp= km/s ▌Show C III at z=v_exp= km/s ▌Show C IV at z=v_exp= km/s ▌Show N II at z=v_exp= km/s ▌Show N III at z=v_exp= km/s ▌Show N IV at z=v_exp= km/s ▌Show N V at z=v_exp= km/s ▌Show O at z=v_exp= km/s ▌Show [O I] at z=v_exp= km/s ▌Show O II at z=v_exp= km/s ▌Show [O II] at z=v_exp= km/s ▌Show [O III] at z=v_exp= km/s ▌Show O V at z=v_exp= km/s ▌Show O VI at z=v_exp= km/s ▌Show Na at z=v_exp= km/s ▌Show Mg at z=v_exp= km/s ▌Show Mg II at z=v_exp= km/s ▌Show Si II at z=v_exp= km/s ▌Show S II at z=v_exp= km/s ▌Show Ca II at z=v_exp= km/s ▌Show [Ca II] at z=v_exp= km/s ▌Show Fe II at z=v_exp= km/s ▌Show Fe III at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Å at z=v_exp= km/s ▌Show Tellurics ▌Show Galaxy lines at z= ▌Show WR-WN at z=v_exp= km/s ▌Show WR-WC/O at z=v_exp= km/s Remarks The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager [1] as part of the “IO” rapid follow-up program [2]. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/1.JATIS.10.2.025005 [2] https://doi.org/10.1117/12.3015250

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

g-Sloan

ASASSN-4_Leavitt

2026-03-05 02:52:48 - 2026-03-05 02:52:48

2461104.62 - 2461104.62

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
563474	2026-03-05 02:52:48	2461104.62			17	ABMag	g-Sloan	ASASSN-4_Leavitt			[Last non detection]

g-Sloan

ASASSN-3_Paczynski

2026-03-08 00:57:36 - 2026-03-08 00:57:36

2461107.54 - 2461107.54

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
563475	2026-03-08 00:57:36	2461107.54	15.2			ABMag	g-Sloan	ASASSN-3_Paczynski

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
293928	2026-03-09 00:37:34	Krzysztof Stanek	K. Z. Stanek, for the ASAS-SN team	ASAS-SN	ASAS-SN	03:42:32.532	-04:17:53.74	2026-03-08 00:57:36.000	15.2	g-Sloan		PSN	IC 0347	ASASSN-26bm	ASAS-SN		On the rise, possible nuclear source, so could also be a TDE	2026TNSTR.978....1S	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23177

2026-03-09 20:03:17

Simon de Wet

BlackGEM

SN Ia

0.01477

BlackGEM

SNID SAGE (Stoppa in prep, 2025) shows good matches to Type Ia-norm spectra at a phase of ~4-9 days. We adopt the redshift from NED of z=0.01477.

2026TNSCR.992....1d

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
23178	2026-03-09 17:59:38	Lesedi / Mookodi	600	N. Erasmus, S. Potter, C. van Gend, H. Worters, S. Chandra, D. Cunnama, M. Hlakola, P. Rabe, R. Julie (all SAAO)	Simon de Wet	BlackGEM	tns_2026fcf_2026-03-09_17-59-38_Lesedi_Mookodi_BlackGEM.csv		Object			The spectrum was taken with the SAAO's 1-m Lesedi robotic telescope with the Mookodi low-resolution spectrograph and imager [1] as part of the “IO” rapid follow-up program [2]. The spectrum was taken with the widest (4") slit width which resulted in a spectral resolution of R ~ 200 at 6000 Angstrom. [1] https://doi.org/10.1117/1.JATIS.10.2.025005 [2] https://doi.org/10.1117/12.3015250

SN 2026fcf

Spectra

Light curves

Comments