2026nbd | Transient Name Server

RA/DEC (2000)

14:48:38.822 +18:16:34.84

222.1617596 +18.2763447

Type

SN Ia-SC

Redshift

0.04

Discovery Report Classification Report

Related AstroNotes: 2026-159

Reporting Group

GOTO

Discovering Data Source

GOTO

Discovery Date

2026-05-18 22:25:36.480

TNS AT

Y

Public

Y

Discovery Mag

19.77

Filter

L-GOTO

Reporter/s

D. O'Neill, K. Ackley, M. Dyer, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, 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

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
	23860	2026-05-29 04:40:11	ESO-NTT / EFOSC2-NTT	1200	Jasvinderjit Khaulsay, Sethu Vazhayil	Amar Aryan, Cheng-Han Lai, Ting-Wan Chen, Anirban Dutta	ePESSTO+	tns_2026nbd_2026-05-29_04-40-11_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci	tns_2026nbd_2026-05-29_04-40-11_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits	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

2026-05-19 00:57:07 - 2026-05-19 00:57:07

2461179.53966 - 2461179.53966

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
584545	2026-05-19 00:57:07	2461179.53966			20.3	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot	[Last non detection]

r-WFST

WFST_WFST-WFC

2026-05-07 19:48:00 - 2026-05-23 18:40:19

2461168.325 - 2461184.278

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
589079	2026-05-23 18:40:19	2461184.278	18.51	0.01		ABMag	r-WFST	WFST_WFST-WFC	30
589078	2026-05-07 19:48:00	2461168.325			21.67	ABMag	r-WFST	WFST_WFST-WFC	30		[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2026-05-17 22:30:03 - 2026-05-18 22:25:36

2461178.437533 - 2461179.434453

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
583833	2026-05-18 22:25:36	2461179.434453	19.77	0.14		ABMag	L-GOTO	GOTO-N_GOTO-1	180
583832	2026-05-17 22:30:03	2461178.437533			20.3	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-05-19 06:29:16 - 2026-05-19 06:29:16

2461179.7703241 - 2461179.7703241

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
583950	2026-05-19 06:29:16	2461179.7703241	19.696	0.145327		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2026-05-15 09:08:51 - 2026-05-19 07:51:45

2461175.8811458 - 2461179.8276042

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
583951	2026-05-19 07:51:45	2461179.8276042	19.349	0.122028		ABMag	g-ZTF	P48_ZTF-Cam
583949	2026-05-15 09:08:51	2461175.8811458			20.5622	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

cyan-ATLAS

ATLAS-HKO_ATLAS-02

2026-05-20 09:21:13 - 2026-05-20 09:21:13

2461180.88973 - 2461180.88973

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
584546	2026-05-20 09:21:13	2461180.88973	19.142	0.117	19.54	ABMag	cyan-ATLAS	ATLAS-HKO_ATLAS-02	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
307121	2026-06-05 15:18:28	WFST_SN	Zelin Xu, Dezheng Meng, Ji-an Jiang et al.	WFST	WFST	14:48:38.810	+18:16:34.81	2026-05-23 18:40:19.200	18.51	r-WFST		PSN		WFST250711uvkr	WFST				N
304867	2026-05-22 10:04:32	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	14:48:38.818	+18:16:35.44	2026-05-20 09:21:12.672	19.142	cyan-ATLAS		PSN		ATLAS26geg	ATLAS				N
304587	2026-05-19 13:27:55	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	14:48:38.822	+18:16:34.84	2026-05-19 06:29:16.002	19.696	r-ZTF		PSN		ZTF26aaxhhid	ZTF				N
304527	2026-05-19 08:00:08	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	14:48:38.808	+18:16:34.17	2026-05-18 22:25:36.480	19.77	L-GOTO		Other		GOTO26eyc	GOTO			2026TNSTR2171....1O	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23856

2026-05-29 12:51:16

ePESSTOplus_Bot1

Jasvinderjit Khaulsay, Sethu Vazhayil, Amar Aryan, Cheng-Han Lai, Ting-Wan Chen, Anirban Dutta, O. Yaron on behalf of ePESSTO+

ePESSTO+

SN Ia-SC

0.04

1

ePESSTO+

2026TNSCR2332....1K

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
23860	2026-05-29 04:40:11	ESO-NTT / EFOSC2-NTT	1200	Jasvinderjit Khaulsay, Sethu Vazhayil	Amar Aryan, Cheng-Han Lai, Ting-Wan Chen, Anirban Dutta	ePESSTO+	tns_2026nbd_2026-05-29_04-40-11_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci	tns_2026nbd_2026-05-29_04-40-11_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 304587 of Group ZTF
Previous RA, DEC: 14:48:38.808, +18:16:34.17 (222.161698, +18.276159)
Updated RA, DEC: 14:48:38.822, +18:16:34.84 (222.1617596, +18.2763447)

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