2025abdd | Transient Name Server

RA/DEC (2000)

07:52:48.983 +69:00:14.78

118.2040973625 +69.0041059875

Type

SN Ic

Redshift

0.01298

Discovery Report Classification Report

Related AstroNotes: DRAFT-2349, 2025-332

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2025-10-20 09:20:43.995

TNS AT

Y

Public

Y

Discovery Mag

19.8061

Filter

g-ZTF

Reporter/s

Jesper Sollerman (SU), 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
	22485	2025-11-21 00:00:00	FLWO-1.5m / FAST	1500	Gilbert Esquerdo, Perry Berlind	S. Karthik Yadavalli, Harsh Kumar	VHU-TDA	tns_2025abdd_2025-11-21_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
	22354	2025-11-02 01:20:21	LT / SPRAT	900	Robotic		OxQUB	tns_2025abdd_2025-11-02_01-20-21.363_LT_SPRAT_OxQUB.txt		Object			quick-look extraction from LT pipeline
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 quick-look extraction from LT pipeline

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

Clear-

LAST_LAST-Cam

2024-03-03 19:19:46 - 2025-10-31 01:02:52

2460373.30539 - 2460979.54366

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
527962	2025-10-31 01:02:52	2460979.54366	16.76			ABMag	Clear-	LAST_LAST-Cam	400
527961	2024-03-03 19:19:46	2460373.30539			21.27	ABMag	Clear-	LAST_LAST-Cam	2360		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-10-15 04:04:01 - 2025-10-30 06:08:48

2460963.669458 - 2460978.756111

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
527762	2025-10-30 06:08:48	2460978.756111	16.53	0.01		ABMag	L-GOTO	GOTO-N_GOTO-2	360
527761	2025-10-15 04:04:01	2460963.669458			19.3	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-10-19 11:30:39 - 2025-10-19 11:30:39

2460967.9796181 - 2460967.9796181

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525483	2025-10-19 11:30:39	2460967.9796181			20.6933	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-10-18 08:13:53 - 2025-10-21 11:20:08

2460966.8429745 - 2460969.9723148

4

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525485	2025-10-21 11:20:08	2460969.9723148	18.8912	0.091851		ABMag	g-ZTF	P48_ZTF-Cam
525484	2025-10-20 09:20:44	2460968.8893981	19.8061	0.156157		ABMag	g-ZTF	P48_ZTF-Cam
527656	2025-10-20 09:20:44	2460968.8893981	19.8061	0.156157	20.4418	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
527655	2025-10-18 08:13:53	2460966.8429745			19.9907	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-10-15 14:01:13 - 2025-10-15 14:01:13

2460964.08418 - 2460964.08418

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525582	2025-10-15 14:01:13	2460964.08418			19.23	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2025-10-21 13:39:06 - 2025-10-21 13:39:06

2460970.06882 - 2460970.06882

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
525583	2025-10-21 13:39:06	2460970.06882	18.939	0.143	19.36	ABMag	cyan-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
275291	2025-10-31 02:13:57	LAST_Bot1	R. Konno (WIS),E. A. Zimmerman (WIS),A. Horowicz (WIS) et al.	LAST	LAST	07:52:48.935	+69:00:15.35	2025-10-31 01:02:52.224	16.76	Clear-		PSN			LAST				N
275204	2025-10-30 10:14:41	GOTO_bot	G. Ramsay,D. O'Neill,K. Ackley et al.	GOTO	GOTO	07:52:49.002	+69:00:14.87	2025-10-30 06:08:47.904	16.53	L-GOTO		Other		GOTO25jhq	GOTO				N
275154	2025-10-29 19:15:06	Fink	Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al.	Fink	ZTF	07:52:48.983	+69:00:14.78	2025-10-20 09:20:43.996	19.8061	g-ZTF		PSN		ZTF25abyevmr	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25abyevmr		N
274231	2025-10-21 15:24:18	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	07:52:48.991	+69:00:14.82	2025-10-21 13:39:06.048	18.939	cyan-ATLAS		PSN		ATLAS25nbj	ATLAS				N
274190	2025-10-21 12:37:55	Fritz	Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.	ZTF	ZTF	07:52:48.986	+69:00:14.79	2025-10-20 09:20:43.995	19.8061	g-ZTF		PSN		ZTF25abyevmr	ZTF			2025TNSTR4230....1S	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

22484

2025-12-02 01:18:29

VHU-TDA

Anya Nugent, Yize Dong, V. Ashley Villar, S. Karthik Yadavalli, Alex Gagliano, Kaylee de Soto, Danielle Frostig, Harsh Kumar, Peter Blanchard

VHU-TDA

SN Ic

0.01298

1

1

VHU-TDA

Redshift from host lines

2025TNSCR4809....1N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025abdd_atrep_22484_VHU-TDA.png	SN2004aw best match from SNID-SAGE.	2025-12-02 01:18:31	VHU-TDA

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
22485	2025-11-21 00:00:00	FLWO-1.5m / FAST	1500	Gilbert Esquerdo, Perry Berlind	S. Karthik Yadavalli, Harsh Kumar	VHU-TDA	tns_2025abdd_2025-11-21_FLWO-1.5m_FAST_VHU-TDA.ascii		Object

22353

2025-11-04 06:52:50

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 Ic

0.01

1

1

OxQUB

Low S/N spectrum shows good matches with normal Ic supernovae around peak (from snid-sage). No available host redshift, we tentatively assign z = 0.01 based on spectral matches and peak luminosity of around -17 at this distance.

2025TNSCR4440....1S

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025abdd_atrep_22353_OxQUB.png	Match with SN Ic obtained from SNID-SAGE.	2025-11-04 06:52:50	Shubham Srivastav

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
22354	2025-11-02 01:20:21	LT / SPRAT	900	Robotic		OxQUB	tns_2025abdd_2025-11-02_01-20-21.363_LT_SPRAT_OxQUB.txt		Object			quick-look extraction from LT pipeline

Comments

Object coordinates updated

Object coordinates updated according to AT-report 275154 of Group ZTF
Previous RA, DEC: 07:52:48.986, +69:00:14.79 (118.2041097, +69.0041088)
Updated RA, DEC: 07:52:48.983, +69:00:14.78 (118.2040973625, +69.0041059875)

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