2026fmu | Transient Name Server

RA/DEC (2000)

09:18:52.337 -11:16:59.66

139.718069672 -11.2832376898

Type

SN Ia

Redshift

0.094

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2026-03-12 06:29:59.997

TNS AT

Y

Public

Y

Discovery Mag

20.5382

Filter

i-ZTF

Reporter/s

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

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
	23331	2026-03-23 07:16:00	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2026fmu_2026-03-23_07-16-00.494155_P60_SEDM_ZTF.ascii		Object
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
	23340	2026-03-22 04:58:01	Lick-3m / KAST		Michael Rich, Ethan Cotta, Zoë McGrath	Aleksandra Bochenek	ZTF	tns_2026fmu_2026-03-22_04-58-01_Lick-3m_KAST_ZTF.txt		Object			Spectrum has features from two cosmic rays that have fallen on the trace and were not removed during reduction.
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 Spectrum has features from two cosmic rays that have fallen on the trace and were not removed during reduction.

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

wide-ATLAS

ATLAS-TDO_ATLAS-05

2026-03-15 23:09:54 - 2026-03-15 23:09:54

2461115.46521 - 2461115.46521

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
565266	2026-03-15 23:09:54	2461115.46521	19.122	0.089	20.03	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

Clear-

LAST_LAST-Cam

2024-03-12 20:37:23 - 2026-03-24 17:34:17

2460382.35929 - 2461124.23214

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569838	2026-03-24 17:34:17	2461124.23214	18.77			ABMag	Clear-	LAST_LAST-Cam	380
569837	2024-03-12 20:37:23	2460382.35929			20.54	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-S_GOTO-3

2026-03-12 10:03:56 - 2026-03-14 10:02:29

2461111.919405 - 2461113.918388

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
565650	2026-03-14 10:02:29	2461113.918388	19.67	0.13		ABMag	L-GOTO	GOTO-S_GOTO-3	180
565649	2026-03-12 10:03:56	2461111.919405			20.2	ABMag	L-GOTO	GOTO-S_GOTO-3	180		[Last non detection]

w-P1

PS2_GPC2

2026-04-06 07:12:38 - 2026-04-06 07:12:38

2461136.80044 - 2461136.80044

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
574546	2026-04-06 07:12:38	2461136.80044	19.02	0.04	22	ABMag	w-P1	PS2_GPC2	45	Robot

orange-ATLAS

ATLAS-STH_ATLAS-03

2026-03-14 21:41:32 - 2026-03-14 21:41:32

2461114.40384 - 2461114.40384

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
565265	2026-03-14 21:41:32	2461114.40384			19.59	ABMag	orange-ATLAS	ATLAS-STH_ATLAS-03	30	Robot	[Last non detection]

i-ZTF

P48_ZTF-Cam

2026-03-09 06:45:40 - 2026-03-12 06:30:00

2461108.781713 - 2461111.7708333

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
564598	2026-03-12 06:30:00	2461111.7708333	20.5382	0.211094		ABMag	i-ZTF	P48_ZTF-Cam
564597	2026-03-09 06:45:40	2461108.781713			20.032	ABMag	i-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2026-03-14 05:30:58 - 2026-03-14 05:30:58

2461113.729838 - 2461113.729838

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
564599	2026-03-14 05:30:58	2461113.729838	19.6385	0.188714		ABMag	g-ZTF	P48_ZTF-Cam

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
299728	2026-04-11 11:39:15	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	09:18:52.337	-11:16:59.66	2026-04-06 07:12:38.016	19.02	w-P1		PSN		PS26aye	Pan-STARRS				N
297224	2026-03-25 09:56:33	LAST_Bot1	R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al.	LAST	LAST	09:18:52.328	-11:16:59.04	2026-03-24 17:34:16.896	18.77	Clear-		PSN			LAST				N
294917	2026-03-18 10:13:21	GOTO_bot	G. Ramsay, D. O'Neill, K. Ackley et al.	GOTO	GOTO	09:18:52.292	-11:17:01.06	2026-03-14 10:02:28.896	19.67	L-GOTO		Other		GOTO26byf	GOTO				N
294727	2026-03-16 14:46:44	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	09:18:52.324	-11:16:59.92	2026-03-15 23:09:54.144	19.122	wide-ATLAS		PSN		ATLAS26dbe	ATLAS				N
294435	2026-03-14 09:08:30	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	09:18:52.341	-11:16:59.71	2026-03-12 06:29:59.997	20.5382	i-ZTF		PSN		ZTF26aalbeox	ZTF			2026TNSTR1081....1S	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23338

2026-03-24 19:12:58

Aleksandra Bochenek

Aleksandra Bochenek

ZTF

SN Ia

0.094

1

ZTF

SN Ia classification from Si II absorption trough and Fe features in the blue. Redshift from NGSF fits is z = 0.094 ± 0.011

2026TNSCR1272....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
23340	2026-03-22 04:58:01	Lick-3m / KAST		Michael Rich, Ethan Cotta, Zoë McGrath	Aleksandra Bochenek	ZTF	tns_2026fmu_2026-03-22_04-58-01_Lick-3m_KAST_ZTF.txt		Object			Spectrum has features from two cosmic rays that have fallen on the trace and were not removed during reduction.

23329

2026-03-23 15:16:53

ZTF_Bot1

J. Sollerman, J. Castaneda Jaimes, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN Ia

0.1

1

ZTF

2026TNSCR1256....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
23331	2026-03-23 07:16:00	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2026fmu_2026-03-23_07-16-00.494155_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 299728 of Group Pan-STARRS
Previous RA, DEC: 09:18:52.341, -11:16:59.71 (139.7180862, -11.2832541)
Updated RA, DEC: 09:18:52.337, -11:16:59.66 (139.718069672, -11.2832376898)

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