2026gwx | Transient Name Server

RA/DEC (2000)

11:28:10.877 +25:39:24.00

172.045322491 +25.6566658587

Type

SN Ib

Redshift

0.00913

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2026-03-20 05:39:38.001

TNS AT

Y

Public

Y

Discovery Mag

20.8896

Filter

r-ZTF

Reporter/s

Nabeel Rehemtulla (CIERA, NU), 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
	23401	2026-03-28 22:48:06	NOT / ALFOSC	1200	Jesper Sollerman, Konstantinos Tsalapatas	Konstantinos Tsalapatas	ZTF	tns_2026gwx_2026-03-28_22-48-06_NOT_ALFOSC_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
	23328	2026-03-23 07:25:07	FLWO-1.5m / FAST		S. Karthik Yadavalli (Harvard/CfA), Yize Dong (Harvard/CfA)	S. Karthik Yadavalli (Harvard/CfA), Yize Dong (Harvard/CfA)	VHU-TDA	tns_2026gwx_2026-03-23_07-25-06.500_FLWO-1.5m_FAST_VHU-TDA.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

r-WFST

WFST_WFST-WFC

2026-03-19 16:06:14 - 2026-03-20 15:43:12

2461119.171 - 2461120.155

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
571889	2026-03-20 15:43:12	2461120.155	20.59	0.17		ABMag	r-WFST	WFST_WFST-WFC	30
571888	2026-03-19 16:06:14	2461119.171			21.97	ABMag	r-WFST	WFST_WFST-WFC	30		[Last non detection]

Clear-

LAST_LAST-Cam

2026-04-20 17:57:48 - 2026-04-28 18:35:57

2461151.24847 - 2461159.27497

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
578727	2026-04-28 18:35:57	2461159.27497	17.83			ABMag	Clear-	LAST_LAST-Cam	400
578726	2026-04-20 17:57:48	2461151.24847			20.35	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2026-03-16 23:19:38 - 2026-03-26 22:11:04

2461116.471969 - 2461126.424347

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
570459	2026-03-26 22:11:04	2461126.424347	17.17	0.02		ABMag	L-GOTO	GOTO-N_GOTO-2	180
570458	2026-03-16 23:19:38	2461116.471969			19.9	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

i-P1

PS2_GPC2

2026-03-28 07:28:16 - 2026-03-28 07:28:16

2461127.8113 - 2461127.8113

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
572331	2026-03-28 07:28:16	2461127.8113	16.68	0.01	20.7	ABMag	i-P1	PS2_GPC2	45	Robot

r-ZTF

P48_ZTF-Cam

2026-03-20 05:39:38 - 2026-03-22 10:29:47

2461119.7358565 - 2461121.9373495

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569191	2026-03-22 10:29:47	2461121.9373495	18.4581	0.106202		ABMag	r-ZTF	P48_ZTF-Cam
569190	2026-03-20 05:39:38	2461119.7358565	20.8896	0.208808		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2026-03-19 08:38:23 - 2026-03-19 08:38:23

2461118.8599884 - 2461118.8599884

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569189	2026-03-19 08:38:23	2461118.8599884			20.921	ABMag	g-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2026-03-27 10:06:27 - 2026-03-27 10:06:27

2461126.92115 - 2461126.92115

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
570777	2026-03-27 10:06:27	2461126.92115			18.8	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2026-03-28 08:16:14 - 2026-03-28 08:16:14

2461127.84461 - 2461127.84461

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
570778	2026-03-28 08:16:14	2461127.84461	16.674	0.033	18.83	ABMag	orange-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
301892	2026-04-28 19:15:20	LAST_Bot1	R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al.	LAST	LAST	11:28:10.840	+25:39:23.84	2026-04-28 18:35:57.408	17.83	Clear-		PSN			LAST				N
298559	2026-04-05 07:26:37	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	11:28:10.877	+25:39:24.00	2026-03-28 07:28:16.320	16.68	i-P1		PSN		PS26ash	Pan-STARRS				N
298296	2026-04-02 14:36:25	WFST_SN	Zelin Xu, Dezheng Meng, Ji-an Jiang et al.	WFST	WFST	11:28:10.860	+25:39:23.94	2026-03-20 15:43:12.000	20.59	r-WFST		PSN		WFST260320nhhv	WFST				N
297662	2026-03-28 19:13:45	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	11:28:10.882	+25:39:24.03	2026-03-28 08:16:14.304	16.674	orange-ATLAS		PSN		ATLAS26dmo	ATLAS				N
297520	2026-03-27 09:38:48	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	11:28:10.871	+25:39:24.36	2026-03-26 22:11:03.840	17.17	L-GOTO		Other		GOTO26cmj	GOTO				N
296940	2026-03-22 11:30:48	Fritz	Nabeel Rehemtulla (CIERA, NU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	11:28:10.890	+25:39:24.12	2026-03-20 05:39:38.001	20.8896	r-ZTF		PSN		ZTF26aaodgsa	ZTF		Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167).	2026TNSTR1235....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

23399

2026-03-30 18:39:29

ZTF_Bot1

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

ZTF

SN Ib

0.00913

1

ZTF

2026TNSCR1364....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
23401	2026-03-28 22:48:06	NOT / ALFOSC	1200	Jesper Sollerman, Konstantinos Tsalapatas	Konstantinos Tsalapatas	ZTF	tns_2026gwx_2026-03-28_22-48-06_NOT_ALFOSC_ZTF.ascii		Object

23326

2026-03-23 08:10:09

Srisurya Yadavalli

S. Karthik Yadavalli (Harvard/CfA), Yize Dong (Harvard/CfA), Anya Nugent (Harvard/CfA), V. Ashley Villar (Harvard/CfA), Alex Gagliano (Harvard/CfA), Kaylee de Soto (Harvard/CfA)

VHU-TDA

SN Ia

0.00925

1

VHU-TDA

classified using snid-sage, object is likely a young SN-Ia, redshift found using host galaxy lines

2026TNSCR1254....1Y

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
23328	2026-03-23 07:25:07	FLWO-1.5m / FAST		S. Karthik Yadavalli (Harvard/CfA), Yize Dong (Harvard/CfA)	S. Karthik Yadavalli (Harvard/CfA), Yize Dong (Harvard/CfA)	VHU-TDA	tns_2026gwx_2026-03-23_07-25-06.500_FLWO-1.5m_FAST_VHU-TDA.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 298559 of Group Pan-STARRS
Previous RA, DEC: 11:28:10.890, +25:39:24.12 (172.0453754, +25.6566993)
Updated RA, DEC: 11:28:10.877, +25:39:24.00 (172.045322491, +25.6566658587)

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