2026cyb | Transient Name Server

RA/DEC (2000)

14:09:50.980 +01:45:05.16

212.462417 +1.751433

Type

SN IIn

Redshift

0.146

Discovery Report Classification Report

Related AstroNotes: 2026-79

Reporting Group

WFST

Discovering Data Source

WFST

Discovery Date

2026-02-09 21:04:19.200

TNS AT

Public

Discovery Mag

21.9

Filter

g-WFST

Reporter/s

Zelin Xu, Dezheng Meng, Ji-an Jiang, Weiyu Wu, Zhengyan Liu, Junhan Zhao, Ziqing Jia (USTC) on behalf of the WFST collaboration

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Spectra

Select	ID	Obs-date (UT)	Tel / Inst	Observer/s	Reducer/s	Group	Spectrum ascii file	Spec. Type
	23500	2026-04-18 08:09:11	FLWO-1.5m / FAST	Harvard	Anya Nugent, Yize Dong	VHU-TDA	tns_2026cyb_2026-04-18_08-09-11.000_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
	23318	2026-03-21 11:05:21	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_2026cyb_2026-03-21_11-05-21_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

wide-ATLAS

ATLAS-TDO_ATLAS-05

2026-02-20 04:15:08 - 2026-02-20 04:15:08

2461091.67718 - 2461091.67718

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
560031	2026-02-20 04:15:08	2461091.67718	19.929	0.133	20.18	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

r-WFST

WFST_WFST-WFC

2026-02-08 23:18:14 - 2026-02-08 23:18:14

2461080.471 - 2461080.471

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
557960	2026-02-08 23:18:14	2461080.471			21.42	ABMag	r-WFST	WFST_WFST-WFC	90		[Last non detection]

g-WFST

WFST_WFST-WFC

2026-02-09 21:04:19 - 2026-02-09 21:04:19

2461081.378 - 2461081.378

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
557961	2026-02-09 21:04:19	2461081.378	21.9	0.12		ABMag	g-WFST	WFST_WFST-WFC	90

Clear-

LAST_LAST-Cam

2024-03-04 01:06:22 - 2026-05-12 18:25:23

2460373.54609 - 2461173.26763

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
582055	2026-05-12 18:25:23	2461173.26763	18.18			ABMag	Clear-	LAST_LAST-Cam	380
582054	2024-03-04 01:06:22	2460373.54609			21.45	ABMag	Clear-	LAST_LAST-Cam	3600		[Last non detection]

L-GOTO

GOTO-S_GOTO-3

2026-02-17 18:26:48 - 2026-02-17 18:26:48

2461089.268609 - 2461089.268609

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
564619	2026-02-17 18:26:48	2461089.268609			20	ABMag	L-GOTO	GOTO-S_GOTO-3	180		[Last non detection]

cyan-ATLAS

ATLAS-STH_ATLAS-03

2026-02-19 02:29:02 - 2026-02-19 02:29:02

2461090.6035 - 2461090.6035

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
560030	2026-02-19 02:29:02	2461090.6035			19.68	ABMag	cyan-ATLAS	ATLAS-STH_ATLAS-03	30	Robot	[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2026-02-20 04:04:07 - 2026-02-20 04:04:07

2461091.669532 - 2461091.669532

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
564620	2026-02-20 04:04:07	2461091.669532	20.01	0.21		ABMag	L-GOTO	GOTO-N_GOTO-1	180

BG-q-BlackGem

BG4_BlackGEM-Cam4

2024-08-05 23:18:20 - 2024-08-05 23:18:20

2460528.4710648 - 2460528.4710648

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
565361	2024-08-05 23:18:20	2460528.4710648			20.2	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic	[Last non detection]

BG-q-BlackGem

BG2_BlackGEM-Cam2

2026-03-17 06:05:30 - 2026-03-17 06:05:30

2461116.7538194 - 2461116.7538194

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
565362	2026-03-17 06:05:30	2461116.7538194	18.78	0.07	20.33	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic

i-ZTF

P48_ZTF-Cam

2026-02-14 09:56:06 - 2026-02-24 09:52:55

2461085.9139583 - 2461095.9117477

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
561158	2026-02-24 09:52:55	2461095.9117477	19.1413	0.118642		ABMag	i-ZTF	P48_ZTF-Cam
561157	2026-02-14 09:56:06	2461085.9139583	19.984	0.183937		ABMag	i-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2026-02-12 11:29:44 - 2026-02-12 11:29:44

2461083.9789815 - 2461083.9789815

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
561156	2026-02-12 11:29:44	2461083.9789815			20.315	ABMag	g-ZTF	P48_ZTF-Cam			[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	AT Type	Internal name	Assoc. Groups	ADS Bibcode	Unreal
303495	2026-05-13 04:03:22	LAST_Bot1	E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al.	LAST	LAST	14:09:50.991	+01:45:04.54	2026-05-12 18:25:23.232	18.18	Clear-	PSN		LAST		N
294773	2026-03-17 08:26:02	BlackGEM_Bot1	L. Landsberg, H. Tranin, F. Stoppa et al.	BlackGEM	BlackGEM	14:09:50.959	+01:45:05.50	2026-03-17 06:05:30.000	18.78	BG-q-BlackGem	PSN	BGEM J140950.96+014505.5	BlackGEM		N
294444	2026-03-14 09:22:49	GOTO_bot	M. Pursiainen, K. Ackley, M. Dyer et al.	GOTO	GOTO	14:09:50.979	+01:45:05.52	2026-02-20 04:04:07.392	20.01	L-GOTO	PSN	GOTO26bvh	GOTO		N
292738	2026-02-24 10:21:05	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	14:09:50.984	+01:45:05.38	2026-02-14 09:56:05.997	19.984	i-ZTF	PSN	ZTF26aahtcvh	ZTF		N
292204	2026-02-22 11:08:48	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	14:09:50.999	+01:45:05.33	2026-02-20 04:15:08.352	19.929	wide-ATLAS	PSN	ATLAS26cet	ATLAS		N
291045	2026-02-12 14:13:24	WFST_SN	Zelin Xu, Dezheng Meng, Ji-an Jiang et al.	WFST	WFST	14:09:50.980	+01:45:05.16	2026-02-09 21:04:19.200	21.9	g-WFST	PSN	WFST260210jogs	WFST	2026TNSTR.611....1X	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23498

2026-04-18 08:38:37

Anya Nugent

Anya Nugent (Harvard/CfA), Yize Dong (Harvard/CfA), S. Karthik Yadavalli (Harvard/CfA), V. Ashley Villar (Harvard/CfA), Kaylee de Soto (Harvard/CfA), Danielle Frostig(Harvard/CfA), Edo Berger (Harvard/CfA), Wasundara Athukoralalage (Harvard/CfA), Will Golay (Harvard/CfA), Daichi Hiramatsu (Harvard/CfA), Yuyang Chen (Harvard/CfA)

VHU-TDA

SN IIn

0.146

VHU-TDA

Redshift from detection of Balmer lines. Classification of SN IIn from SNID-SAGE.

2026TNSCR1711....1N

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
23500	2026-04-18 08:09:11	FLWO-1.5m / FAST		Harvard	Anya Nugent, Yize Dong	VHU-TDA	tns_2026cyb_2026-04-18_08-09-11.000_FLWO-1.5m_FAST_VHU-TDA.ascii		Object

23317

2026-03-22 08:03:34

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), Danielle Frostig(Harvard/CfA), Edo Berger (Harvard/CfA), Wasundara Athukoralalage (Harvard/CfA), Will Golay (Harvard/CfA), Daichi Hiramatsu (Harvard/CfA), Yuyang Chen (Harvard/CfA)

VHU-TDA

SN II

0.0146

VHU-TDA

classified with snid-sage, best match: SN 2016jyd

2026TNSCR1240....1Y

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2026cyb_atrep_23317_VHU-TDA.png		2026-03-22 08:03:34	Srisurya Yadavalli

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
23318	2026-03-21 11:05:21	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_2026cyb_2026-03-21_11-05-21_FLWO-1.5m_FAST_VHU-TDA.ascii		Object

SN 2026cyb

Spectra

Light curves

Comments