2026bku | Transient Name Server

RA/DEC (2000)

07:44:54.548 -00:03:27.22

116.2272834 -0.0575615

Type

SN Ib

Redshift

0.027696

Discovery Report Classification Report

Reporting Group

GOTO

Discovering Data Source

GOTO

Discovery Date

2026-01-15 22:38:06.432

TNS AT

Y

Public

Y

Discovery Mag

19.79

Filter

L-GOTO

Reporter/s

G. Ramsay, D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, K. Noysena, R. Kotak, R. Breton, J. Casares, L. Nuttall, R. Starling, B. Gompertz, B. Godson, T. Killestein, A. Kumar, M. Pursiainen, on behalf of GOTO collaboration

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

GOTO-N_GOTO-2_L

▌

GOTO-N_GOTO-1_L

▌

P48_ZTF-Cam_r

▌

ATLAS-MLO_ATLAS-01_orange

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
	23064	2026-02-23 04:57:11	P200 / NGPS		Sam Rose	Sam Rose	ZTF	tns_2026bku_2026-02-23_04-57-11_P200_NGPS_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-N_GOTO-2

2026-01-15 22:38:06 - 2026-01-15 22:38:06

2461056.443127 - 2461056.443127

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
554066	2026-01-15 22:38:06	2461056.443127	19.79	0.12		ABMag	L-GOTO	GOTO-N_GOTO-2	360

L-GOTO

GOTO-N_GOTO-1

2026-01-14 23:43:31 - 2026-01-14 23:43:31

2461055.488554 - 2461055.488554

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
554065	2026-01-14 23:43:31	2461055.488554			20.4	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-01-14 08:09:05 - 2026-02-02 05:54:09

2461054.8396412 - 2461073.7459375

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
555427	2026-02-02 05:54:09	2461073.7459375	18.6751	0.145629		ABMag	r-ZTF	P48_ZTF-Cam
555426	2026-01-16 07:02:38	2461056.7934954	20.3574	0.20676		ABMag	r-ZTF	P48_ZTF-Cam
555425	2026-01-14 08:09:05	2461054.8396412			20.3465	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2026-01-30 09:02:11 - 2026-02-05 10:47:20

2461070.87652 - 2461076.94954

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
556591	2026-02-05 10:47:20	2461076.94954	18.463	0.155	19.09	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot
556590	2026-01-30 09:02:11	2461070.87652			18.82	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
290303	2026-02-08 12:42:11	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	07:44:54.518	-00:03:26.25	2026-02-05 10:47:20.256	18.463	orange-ATLAS		PSN		ATLAS26bmc	ATLAS				N
289779	2026-02-02 06:47:00	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	07:44:54.548	-00:03:27.22	2026-01-16 07:02:38.002	20.3574	r-ZTF		PSN		ZTF26aadqfik	ZTF				N
289060	2026-01-26 14:53:58	GOTO_bot	G. Ramsay, D. O'Neill, K. Ackley et al.	GOTO	GOTO	07:44:54.564	-00:03:27.61	2026-01-15 22:38:06.432	19.79	L-GOTO		Other		GOTO26wy	GOTO			2026TNSTR.341....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

23063

2026-02-24 00:17:10

ZTF_Bot1

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

ZTF

SN Ib

0.027696

1

ZTF

2026TNSCR.797....1R

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
23064	2026-02-23 04:57:11	P200 / NGPS		Sam Rose	Sam Rose	ZTF	tns_2026bku_2026-02-23_04-57-11_P200_NGPS_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 289779 of Group ZTF
Previous RA, DEC: 07:44:54.564, -00:03:27.61 (116.227348, -0.057669)
Updated RA, DEC: 07:44:54.548, -00:03:27.22 (116.2272834, -0.0575615)

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