2025agsc | Transient Name Server

RA/DEC (2000)

23:02:06.576 +12:42:49.48

345.527401663 +12.7137452863

Type

SN Ia

Redshift

0.03

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-12-13 06:02:26.880

TNS AT

Y

Public

Y

Discovery Mag

18.994

Filter

cyan-ATLAS

Reporter/s

J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

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
	22692	2025-12-27 18:24:00	BL41 / FOSC-E5535	5400	Claudio Balcon	Claudio Balcon	None	tns_2025agsc_2025-12-27_18-24-00_BL41_FOSC-E5535_None.dat	tns_2025agsc_2025-12-27_18-24-00_BL41_FOSC-E5535_None.fit	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

2025-12-10 19:55:05 - 2025-12-10 19:55:05

2461020.32992 - 2461020.32992

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538462	2025-12-10 19:55:05	2461020.32992			19.6	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot	[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-12-10 20:51:10 - 2025-12-10 20:51:10

2461020.368861 - 2461020.368861

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
544559	2025-12-10 20:51:10	2461020.368861			20	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

g-P1

PS2_GPC2

2025-12-15 05:29:11 - 2025-12-15 05:29:11

2461024.7286 - 2461024.7286

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
539487	2025-12-15 05:29:11	2461024.7286	18.56	0.05	21	ABMag	g-P1	PS2_GPC2	27	Robot

L-GOTO

GOTO-N_GOTO-1

2025-12-28 19:39:23 - 2025-12-28 19:39:23

2461038.319023 - 2461038.319023

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
544560	2025-12-28 19:39:23	2461038.319023	17.24	0.15		ABMag	L-GOTO	GOTO-N_GOTO-1	180

r-ZTF

P48_ZTF-Cam

2026-01-12 02:17:27 - 2026-02-04 02:26:21

2461052.5954514 - 2461075.6016319

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
555707	2026-02-04 02:26:21	2461075.6016319	18.9018	0.166933		ABMag	r-ZTF	P48_ZTF-Cam
555706	2026-01-13 02:18:54	2461053.5964583	18.2543	0.074782		ABMag	r-ZTF	P48_ZTF-Cam
555705	2026-01-12 02:17:27	2461052.5954514			19.4172	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2025-12-13 06:02:27 - 2025-12-13 06:02:27

2461022.7517 - 2461022.7517

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
538463	2025-12-13 06:02:27	2461022.7517	18.994	0.144	19.34	ABMag	cyan-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

Clear-

Other_Other

2025-12-19 14:41:39 - 2025-12-19 14:41:39

2461029.11226 - 2461029.11226

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
541459	2025-12-19 14:41:39	2461029.11226	18.15		19.5	VegaMag	Clear-	Other_Other	60	Xing Gao

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
289904	2026-02-04 05:32:07	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	23:02:06.579	+12:42:49.76	2026-01-13 02:18:53.997	18.2543	r-ZTF		PSN		ZTF26aaaqrtf	ZTF				N
283499	2025-12-29 10:45:03	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	23:02:06.575	+12:42:49.44	2025-12-28 19:39:23.328	17.24	L-GOTO		Other		GOTO25mvm	GOTO				N
281769	2025-12-21 09:11:40	XOSS_Bot0	Mi Zhang, Jianlin Xu, Guoyou Sun et al.	XOSS	XOSS	23:02:06.660	+12:42:49.30	2025-12-19 14:41:39.264	18.15	Clear-		Other			XOSS		Cataclysmic variable candidate classified by XOSS.		N
280883	2025-12-16 22:58:24	YSE_Bot1	D. O. Jones (UC Santa Cruz), K. D. French (Carnegie, Illinois), A. Agnello et al.	YSE	Pan-STARRS	23:02:06.576	+12:42:49.48	2025-12-15 05:29:11.040	18.56	g-P1		PSN		PS25iqo	Pan-STARRS				N
280394	2025-12-13 15:45:10	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	23:02:06.592	+12:42:49.87	2025-12-13 06:02:26.880	18.994	cyan-ATLAS		PSN		ATLAS25ppd	ATLAS			2025TNSTR4949....1T	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

22691

2025-12-27 19:34:46

Claudio Balcon

Claudio Balcon (Belluno A.O. ISSP)

None

SN Ia

0.03

1

GELATO Harutyunyan et al., 2008, A&A, 488, 383 (gelato@tng.iac.es) suggests that this spectrum resembles that of a type Ia supernova. The redshift has been deduced from the SN spectral fitting.

2025TNSCR5191....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
22692	2025-12-27 18:24:00	BL41 / FOSC-E5535	5400	Claudio Balcon	Claudio Balcon	None	tns_2025agsc_2025-12-27_18-24-00_BL41_FOSC-E5535_None.dat	tns_2025agsc_2025-12-27_18-24-00_BL41_FOSC-E5535_None.fit	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 280883 of Group Pan-STARRS
Previous RA, DEC: 23:02:06.592, +12:42:49.87 (345.527466667, +12.7138533333)
Updated RA, DEC: 23:02:06.576, +12:42:49.48 (345.527401663, +12.7137452863)

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