2026iib | Transient Name Server

RA/DEC (2000)

09:40:00.979 -04:40:36.43

145.00408053333 -4.6767848333333

Type

SN Ia

Redshift

0.0685

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2026-04-02 05:35:43.995

TNS AT

Y

Public

Y

Discovery Mag

19.3685

Filter

r-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
	23444	2026-04-07 05:12:29	P60 / SEDM	2700	SEDmRobot		ZTF	tns_2026iib_2026-04-07_05-12-28.950088_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

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

L-GOTO

GOTO-S_GOTO-3

2026-03-25 11:18:49 - 2026-04-02 10:24:47

2461124.971397 - 2461132.933883

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
574628	2026-04-02 10:24:47	2461132.933883	19.16	0.19		ABMag	L-GOTO	GOTO-S_GOTO-3	180
574627	2026-03-25 11:18:49	2461124.971397			19.9	ABMag	L-GOTO	GOTO-S_GOTO-3	135		[Last non detection]

orange-ATLAS

ATLAS-CHL_ATLAS-04

2026-04-04 05:49:52 - 2026-04-04 05:49:52

2461134.74296 - 2461134.74296

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
572637	2026-04-04 05:49:52	2461134.74296			18.39	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

BG-q-BlackGem

BG2_BlackGEM-Cam2

2026-03-31 03:04:26 - 2026-04-07 00:48:08

2461130.6280787 - 2461137.5334259

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
573326	2026-04-07 00:48:08	2461137.5334259	18.46	0.06	20.46	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic
573325	2026-03-31 03:04:26	2461130.6280787			19.05	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic	[Last non detection]

i-ZTF

P48_ZTF-Cam

2026-03-27 05:34:28 - 2026-03-27 05:34:28

2461126.7322685 - 2461126.7322685

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
572290	2026-03-27 05:34:28	2461126.7322685			20.1662	ABMag	i-ZTF	P48_ZTF-Cam			[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-04-02 05:35:44 - 2026-04-05 03:31:50

2461132.7331481 - 2461135.6471065

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
572292	2026-04-05 03:31:50	2461135.6471065	18.8845	0.120147		ABMag	r-ZTF	P48_ZTF-Cam
572291	2026-04-02 05:35:44	2461132.7331481	19.3685	0.189833		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2026-04-02 07:39:53 - 2026-04-04 08:10:25

2461132.8193634 - 2461134.8405671

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
575860	2026-04-04 08:10:25	2461134.8405671	18.5794	0.24164	18.6403	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
575859	2026-04-02 07:39:53	2461132.8193634			18.5533	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

orange-ATLAS

ATLAS-MLO_ATLAS-01

2026-04-05 09:31:05 - 2026-04-05 09:31:05

2461135.89659 - 2461135.89659

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
572638	2026-04-05 09:31:05	2461135.89659	18.519	0.143	19.1	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	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
300421	2026-04-16 18:43:59	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	09:40:00.979	-04:40:36.43	2026-04-04 08:10:24.997	18.5794	g-ZTF		PSN		ZTF26aarcbcv	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aarcbcv		N
299797	2026-04-11 16:49:31	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	09:40:00.951	-04:40:36.18	2026-04-02 10:24:47.232	19.16	L-GOTO		Other		GOTO26czf	GOTO				N
299125	2026-04-07 15:27:21	BlackGEM_Bot1	H. Tranin, F. Stoppa, D. Pieterse et al.	BlackGEM	BlackGEM	09:40:00.985	-04:40:36.70	2026-04-07 00:48:08.000	18.46	BG-q-BlackGem		PSN		BGEM J094000.99-044036.7	BlackGEM				N
298746	2026-04-05 21:32:10	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	09:40:00.999	-04:40:36.43	2026-04-05 09:31:05.376	18.519	orange-ATLAS		PSN		ATLAS26dss	ATLAS				N
298542	2026-04-05 04:23:33	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	09:40:00.983	-04:40:36.50	2026-04-02 05:35:43.995	19.3685	r-ZTF		PSN		ZTF26aarcbcv	ZTF			2026TNSTR1439....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

23442

2026-04-09 19:50:23

ZTF_Bot1

J. Sollerman, K. Hinds, C. Fremling, J. Castaneda Jaimes, T. du Laz, T. Culino, M. Kasliwal (Caltech), and M. Coughlin (UoM) on behalf of the ZTF LIONS collaboration

ZTF

SN Ia

0.0685

1

ZTF

2026TNSCR1515....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
23444	2026-04-07 05:12:29	P60 / SEDM	2700	SEDmRobot		ZTF	tns_2026iib_2026-04-07_05-12-28.950088_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 300421 of Group ZTF
Previous RA, DEC: 09:40:00.983, -04:40:36.50 (145.0040957, -4.676805)
Updated RA, DEC: 09:40:00.979, -04:40:36.43 (145.00408053333, -4.6767848333333)

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