2025fdq | Transient Name Server

RA/DEC (2000)

13:41:00.427 +39:03:29.44

205.251779731 +39.0581766363

Type

SN II

Redshift

0.02

Discovery Report Classification Report

Related AstroNotes: 2025-101

Reporting Group

SGLF

Discovering Data Source

ZTF

Discovery Date

2025-03-22 09:55:29.000

TNS AT

Y

Public

Y

Host Name

SDSS J134100.38+390324.7

Host Redshift

0.02022211

Discovery Mag

19.252

Filter

g-ZTF

Reporter/s

I. Pérez-Fournon (IAC and ULL), D. Cano-Morales, I. Correa-Plasencia, A.E. Hernández-Díaz, C. Jaén-Martín (ULL), F. Poidevin (IAC and ULL), E. Hatziminaoglou (ESO and IAC), C. Jiménez Ángel (GRANTECAN), Z. Delgado-González (ULL), R. Shirley (MPE), R. Marques-Chaves (Univ. of Geneva), and S. Geier (GRANTECAN & IAC) on behalf of SGLF

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
	20657	2025-03-26 23:09:50	NOT / ALFOSC	1200	David Jones	Gerard Garcia Moreno	BlackGEM	tns_2025fdq_2025-03-26_23-09-50_NOT_ALFOSC_BlackGEM.txt		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
	20635	2025-03-25 03:04:01	LT / SPRAT	2000	Robotic		OxQUB	tns_2025fdq_2025-03-25_03-04-01.490_LT_SPRAT_OxQUB.txt		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

Clear-

LAST_LAST-Cam

2024-03-12 00:14:48 - 2025-03-25 01:27:51

2460381.51028 - 2460759.56101

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
478731	2025-03-25 01:27:51	2460759.56101	18.57			ABMag	Clear-	LAST_LAST-Cam	400
478730	2024-03-12 00:14:48	2460381.51028			21.52	ABMag	Clear-	LAST_LAST-Cam	3480		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-04-04 01:24:37 - 2025-04-04 01:24:37

2460769.558762 - 2460769.558762

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
480990	2025-04-04 01:24:37	2460769.558762	18.18	0.15		ABMag	L-GOTO	GOTO-N_GOTO-2	180

L-GOTO

GOTO-N_GOTO-1

2025-03-21 01:47:43 - 2025-03-21 01:47:43

2460755.574796 - 2460755.574796

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
480989	2025-03-21 01:47:43	2460755.574796			19.7	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-03-22 07:21:33 - 2025-03-22 07:21:33

2460756.8066319 - 2460756.8066319

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
477623	2025-03-22 07:21:33	2460756.8066319			20.592	ABMag	r-ZTF	P48_ZTF-Cam	30	ZTFbot	[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-03-22 09:55:29 - 2025-03-22 09:55:29

2460756.9135301 - 2460756.9135301

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
477624	2025-03-22 09:55:29	2460756.9135301	19.252	0.123		ABMag	g-ZTF	P48_ZTF-Cam	30	ZTFbot

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-03-22 14:16:45 - 2025-03-22 14:16:45

2460757.09497 - 2460757.09497

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
478184	2025-03-22 14:16:45	2460757.09497			19.41	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

cyan-ATLAS

ATLAS-HKO_ATLAS-02

2025-03-23 11:18:46 - 2025-03-23 11:18:46

2460757.97137 - 2460757.97137

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
478185	2025-03-23 11:18:46	2460757.97137	18.545	0.084	19.59	ABMag	cyan-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot

y-P1

PS1_GPC1

2025-03-24 11:11:52 - 2025-03-24 11:11:52

2460758.96657 - 2460758.96657

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
478945	2025-03-24 11:11:52	2460758.96657	18.83	0.08	18.3	ABMag	y-P1	PS1_GPC1	100	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
251043	2025-04-05 22:36:32	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	13:41:00.483	+39:03:29.33	2025-04-04 01:24:36.864	18.18	L-GOTO		Other		GOTO25brt	GOTO				N
249909	2025-03-25 22:43:20	PS1_Bot1	K. C. Chambers,T. de Boer,J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	13:41:00.427	+39:03:29.44	2025-03-24 11:11:51.648	18.83	y-P1		PSN		PS25avp	Pan-STARRS				N
249825	2025-03-25 06:41:47	LAST_Bot1	E. O. Ofek (WIS),R. Konno (WIS),E. A. Zimmerman (WIS) et al.	LAST	LAST	13:41:00.415	+39:03:29.36	2025-03-25 01:27:51.264	18.57	Clear-		PSN			LAST				N
249577	2025-03-23 13:56:16	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	13:41:00.425	+39:03:29.92	2025-03-23 11:18:46.368	18.545	cyan-ATLAS		PSN		ATLAS25cys	ATLAS				N
249226	2025-03-22 11:27:09	Ismael Perez-Fournon	I. Pérez-Fournon (IAC and ULL),D. Cano-Morales,I. Correa-Plasencia et al.	SGLF	ZTF	13:41:00.418	+39:03:29.39	2025-03-22 09:55:29.000	19.252	g-ZTF		PSN	SDSS J134100.38+390324.7	ZTF25aajygin	ZTF		SN candidate discovered using the public ZTF alerts, the LSST/ZTF brokers, and our SGLF filters. ZTF light curve available at the LSST/ZTF brokers, e.g.: https://lasair-ztf.lsst.ac.uk/objects/ZTF25aajygin/ https://alerce.online/object/ZTF25aajygin https://antares.noirlab.edu/loci/ANT202532i2knf0ue79	2025TNSTR1087....1P	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

20657

2025-03-27 22:28:30

Nadejda Blagorodnova Mujortova

Nadejda Blagorodnova (ICCUB), David Jones (IAC), Gerard García Moreno (ICCUB), Erez A. Zimmerman (WIS), Moses Mlangeni (UCT/SAAO), Marco A. Gómez-Muñoz (ICCUB), Hugo Tranin (ICCUB)

BlackGEM

SN II

0.02

1

BlackGEM, CET-3PO

2025TNSCR1185....1B

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
20657	2025-03-26 23:09:50	NOT / ALFOSC	1200	David Jones	Gerard Garcia Moreno	BlackGEM	tns_2025fdq_2025-03-26_23-09-50_NOT_ALFOSC_BlackGEM.txt		Object

20635

2025-03-26 10:22:33

Shubham Srivastav

S. Srivastav (Oxford), M. Fulton, M. Nicholl, C. R. Angus, K. W. Smith, D. R. Young, A. Aamer, D. Magill, T. Moore, X. Sheng, S. A. Sim (QUB), S. J. Smartt (Oxford/QUB), J. H. Gillanders, H. F. Stevance (Oxford), T.-W. Chen (NCU)

OxQUB

SN II

0.02

1

OxQUB

Broad H alpha at ~13000 km/s, ATLAS and ZTF light curves also flattening, likely a young SN II. Redshift from NED.

2025TNSCR1160....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
20635	2025-03-25 03:04:01	LT / SPRAT	2000	Robotic		OxQUB	tns_2025fdq_2025-03-25_03-04-01.490_LT_SPRAT_OxQUB.txt		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 249909 of Group Pan-STARRS
Previous RA, DEC: 13:41:00.418, +39:03:29.39 (205.251742, +39.058164)
Updated RA, DEC: 13:41:00.427, +39:03:29.44 (205.251779731, +39.0581766363)

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