2026ktu | Transient Name Server

RA/DEC (2000)

11:42:18.333 +54:08:04.40

175.5763866 +54.1345562

Type

SN Ia

Redshift

0.076

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2026-04-22 22:36:59.904

TNS AT

Y

Public

Y

Discovery Mag

19.71

Filter

wide-ATLAS

Reporter/s

J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

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
	23851	2026-05-20 00:00:00	Keck1 / LRIS	300	Kaustav Kashyap Das	Kaustav Kashyap Das	ZTF	tns_2026ktu_2026-05-20_00-00-00_Keck1_LRIS_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

wide-ATLAS

ATLAS-TDO_ATLAS-05

2026-04-22 22:37:00 - 2026-04-22 22:37:00

2461153.44236 - 2461153.44236

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
578083	2026-04-22 22:37:00	2461153.44236	19.71	0.172	19.55	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

g-WFST

WFST_WFST-WFC

2026-04-04 20:03:50 - 2026-04-19 20:57:07

2461135.336 - 2461150.373

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
589418	2026-04-19 20:57:07	2461150.373	20.31	0.08		ABMag	g-WFST	WFST_WFST-WFC	30
589417	2026-04-04 20:03:50	2461135.336			21.22	ABMag	g-WFST	WFST_WFST-WFC	30		[Last non detection]

Clear-

LAST_LAST-Cam

2026-04-18 17:48:58 - 2026-05-07 17:22:09

2461149.24234 - 2461168.22372

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
580162	2026-05-07 17:22:09	2461168.22372	18.79			ABMag	Clear-	LAST_LAST-Cam	400
580161	2026-04-18 17:48:58	2461149.24234			20.17	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

r-ZTF

P48_ZTF-Cam

2023-12-12 10:15:44 - 2026-04-29 06:16:24

2460290.9275926 - 2461159.7613889

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
578818	2026-04-29 06:16:24	2461159.7613889	18.695	0.0957088		ABMag	r-ZTF	P48_ZTF-Cam
578817	2023-12-12 10:51:53	2460290.9526968	18.801	0.188114		ABMag	r-ZTF	P48_ZTF-Cam
578816	2023-12-12 10:15:44	2460290.9275926			20.5312	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2026-04-06 10:20:09 - 2026-04-06 10:20:09

2461136.93066 - 2461136.93066

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
578082	2026-04-06 10:20:09	2461136.93066			18.78	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	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
307280	2026-06-07 14:05:03	WFST_SN	Zelin Xu, Dezheng Meng, Ji-an Jiang et al.	WFST	WFST	11:42:18.250	+54:08:04.44	2026-04-19 20:57:07.200	20.31	g-WFST		PSN		WFST251117cizzc	WFST				N
302603	2026-05-07 18:28:18	LAST_Bot1	R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al.	LAST	LAST	11:42:18.285	+54:08:03.98	2026-05-07 17:22:09.408	18.79	Clear-		PSN			LAST				N
301931	2026-04-29 07:20:19	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	11:42:18.333	+54:08:04.40	2023-12-12 10:51:53.003	18.801	r-ZTF		PSN		ZTF18aanafed	ZTF				N
301539	2026-04-25 22:05:00	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	11:42:18.280	+54:08:04.27	2026-04-22 22:36:59.904	19.71	wide-ATLAS		PSN		ATLAS26ewx	ATLAS			2026TNSTR1818....1T	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23847

2026-05-26 20:37:21

ZTF_Bot1

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

ZTF

SN Ia

0.076

1

ZTF

2026TNSCR2299....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
23851	2026-05-20 00:00:00	Keck1 / LRIS	300	Kaustav Kashyap Das	Kaustav Kashyap Das	ZTF	tns_2026ktu_2026-05-20_00-00-00_Keck1_LRIS_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 301931 of Group ZTF
Previous RA, DEC: 11:42:18.280, +54:08:04.27 (175.576168333, +54.13452)
Updated RA, DEC: 11:42:18.333, +54:08:04.40 (175.5763866, +54.1345562)

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