2026gwc | Transient Name Server

RA/DEC (2000)

11:21:27.208 +03:26:36.61

170.36336677273 +3.4435025

Type

SN IIP

Redshift

0.02295

Discovery Report Classification Report

Reporting Group

ALeRCE

Discovering Data Source

ZTF

Discovery Date

2026-03-21 10:50:23.001

TNS AT

Y

Public

Y

Host Name

SDSS J112126.96+032641.6

Host Redshift

0.02294465

Discovery Mag

19.8511

Filter

r-ZTF

Reporter/s

F. Forster, F.E. Bauer, G. Pignata, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker

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
	23597	2026-04-02 09:10:37	P200 / NGPS		K-Ryan Hinds	Christoffer Fremling	ZTF	tns_2026gwc_2026-04-02_09-10-37_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-S_GOTO-3

2026-03-20 12:19:38 - 2026-03-22 12:09:35

2461120.013626 - 2461122.00666

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569329	2026-03-22 12:09:35	2461122.00666	19.16	0.07		ABMag	L-GOTO	GOTO-S_GOTO-3	180
569328	2026-03-20 12:19:38	2461120.013626			20.4	ABMag	L-GOTO	GOTO-S_GOTO-3	180		[Last non detection]

cyan-ATLAS

ATLAS-CHL_ATLAS-04

2026-03-20 06:28:50 - 2026-03-20 06:28:50

2461119.77002 - 2461119.77002

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
570167	2026-03-20 06:28:50	2461119.77002			19.52	ABMag	cyan-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

BG-q-BlackGem

BG4_BlackGEM-Cam4

2026-03-24 03:48:14 - 2026-03-24 03:48:14

2461123.6584954 - 2461123.6584954

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569599	2026-03-24 03:48:14	2461123.6584954	19.26	0.07	20.94	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic

BG-q-BlackGem

BG2_BlackGEM-Cam2

2025-12-30 07:57:55 - 2025-12-30 07:57:55

2461039.8318866 - 2461039.8318866

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569598	2025-12-30 07:57:55	2461039.8318866			20.64	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-03-20 08:04:59 - 2026-03-21 10:50:23

2461119.836794 - 2461120.9516551

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569106	2026-03-21 10:50:23	2461120.9516551	19.8511	0.140223	20.1239	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
571918	2026-03-21 10:50:23	2461120.9516551	19.8511	0.140223	20.1239	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
571917	2026-03-20 08:04:59	2461119.836794			20.4673	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

g-ZTF

P48_ZTF-Cam

2026-03-21 08:42:42 - 2026-03-21 08:42:42

2461120.8629861 - 2461120.8629861

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
569105	2026-03-21 08:42:42	2461120.8629861			20.5104	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF

orange-ATLAS

ATLAS-MLO_ATLAS-01

2026-03-25 10:08:11 - 2026-03-25 10:08:11

2461124.92235 - 2461124.92235

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
570168	2026-03-25 10:08:11	2461124.92235	19.042	0.169	19.44	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	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
298316	2026-04-02 18:44:26	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	11:21:27.208	+03:26:36.61	2026-03-21 10:50:23.001	19.8511	r-ZTF		PSN		ZTF26aaofvtl	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aaofvtl		N
297393	2026-03-26 00:04:24	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	11:21:27.241	+03:26:36.65	2026-03-25 10:08:11.040	19.042	orange-ATLAS		PSN		ATLAS26dhh	ATLAS				N
297125	2026-03-24 09:31:13	BlackGEM_Bot1	P. Groot, H. Tranin, F. Stoppa et al.	BlackGEM	BlackGEM	11:21:27.179	+03:26:36.25	2026-03-24 03:48:14.000	19.26	BG-q-BlackGem		PSN		BGEM J112127.18+032636.3	BlackGEM				N
297011	2026-03-22 23:03:00	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	11:21:27.177	+03:26:36.59	2026-03-22 12:09:35.424	19.16	L-GOTO		Other		GOTO26chr	GOTO				N
296911	2026-03-22 01:32:30	ALeRCE	F. Forster, F.E. Bauer, G. Pignata et al.	ALeRCE	ZTF	11:21:27.200	+03:26:36.68	2026-03-21 10:50:23.001	19.8511	r-ZTF		PSN	SDSS J112126.96+032641.6	ZTF26aaofvtl	ZTF		Early SN candidate (r-rise > 0.55+-0.13 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF26aaofvtl	2026TNSTR1223....1F	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23594

2026-05-01 18:53:36

ZTF_Bot1

C. Fremling, K. Hinds, J. Castaneda Jaimes, T. du Laz, T. Culino, M. Kasliwal (Caltech), and M. Coughlin (UoM) on behalf of the ZTF LIONS collaboration

ZTF

SN IIP

0.02295

1

ZTF

2026TNSCR1913....1F

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
23597	2026-04-02 09:10:37	P200 / NGPS		K-Ryan Hinds	Christoffer Fremling	ZTF	tns_2026gwc_2026-04-02_09-10-37_P200_NGPS_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 298316 of Group ZTF
Previous RA, DEC: 11:21:27.200, +03:26:36.68 (170.3633313, +3.443523)
Updated RA, DEC: 11:21:27.208, +03:26:36.61 (170.36336677273, +3.4435025)

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