2025aful | Transient Name Server

RA/DEC (2000)

11:40:06.332 -09:28:31.33

175.0263821 -9.4753702

Type

SN Ia

Redshift

0.04

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-12-03 13:31:55.776

TNS AT

Y

Public

Y

Discovery Mag

17.768

Filter

orange-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
	22522	2025-12-06 21:45:31	Lijiang-2.4m / YFOSC		Jujia Zhang		LiONS	tns_2025aful_2025-12-06_21-45-30.591_Lijiang-2.4m_YFOSC_LiONS.dat		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-N_GOTO-2

2025-11-19 06:31:07 - 2025-11-26 06:02:48

2460998.771613 - 2461005.751947

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
536170	2025-11-26 06:02:48	2461005.751947	18.95	0.09		ABMag	L-GOTO	GOTO-N_GOTO-2	180
536169	2025-11-19 06:31:07	2460998.771613			19.7	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

BG-q-BlackGem

BG4_BlackGEM-Cam4

2025-12-16 08:02:05 - 2025-12-16 08:02:05

2461025.8347801 - 2461025.8347801

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
539352	2025-12-16 08:02:05	2461025.8347801	17.87	0.1	20.49	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic

BG-q-BlackGem

BG2_BlackGEM-Cam2

2024-12-31 08:15:28 - 2024-12-31 08:15:28

2460675.8440741 - 2460675.8440741

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
539351	2024-12-31 08:15:28	2460675.8440741			21.19	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-11-27 13:08:44 - 2025-11-27 13:08:44

2461007.0477315 - 2461007.0477315

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
536770	2025-11-27 13:08:44	2461007.0477315			18.3942	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-12-04 12:59:55 - 2025-12-08 12:36:55

2461014.0416088 - 2461018.0256366

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
536772	2025-12-08 12:36:55	2461018.0256366	17.2804	0.0559644		ABMag	g-ZTF	P48_ZTF-Cam
536771	2025-12-04 12:59:55	2461014.0416088	17.4217	0.106966		ABMag	g-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-12-01 14:33:57 - 2025-12-01 14:33:57

2461011.10691 - 2461011.10691

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
535966	2025-12-01 14:33:57	2461011.10691			19.21	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-12-03 13:31:56 - 2025-12-03 13:31:56

2461013.06384 - 2461013.06384

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
535967	2025-12-03 13:31:56	2461013.06384	17.768	0.117	18.31	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	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
280828	2025-12-16 10:27:01	BlackGEM_Bot1	G. Ramsay,H. Tranin,F. Stoppa et al.	BlackGEM	BlackGEM	11:40:06.332	-09:28:31.76	2025-12-16 08:02:05.000	17.87	BG-q-BlackGem		PSN		BGEM J114006.33-092831.8	BlackGEM				N
279671	2025-12-08 12:47:55	BTSbot_bot	Nabeel Rehemtulla (CIERA,NU),Wynn Jacobson-Galán (Caltech) et al.	ZTF	ZTF	11:40:06.332	-09:28:31.33	2025-12-04 12:59:55.000	17.4217	g-ZTF		PSN		ZTF25acfwksj	ZTF		Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167).		N
279403	2025-12-05 20:21:06	GOTO_bot	G. Ramsay,D. O'Neill,K. Ackley et al.	GOTO	GOTO	11:40:06.316	-09:28:31.37	2025-11-26 06:02:48.480	18.95	L-GOTO		Other		GOTO25lbq	GOTO				N
279328	2025-12-04 13:11:05	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland (IfA et al.	ATLAS	ATLAS	11:40:06.364	-09:28:31.34	2025-12-03 13:31:55.776	17.768	orange-ATLAS		PSN		ATLAS25phx	ATLAS			2025TNSTR4829....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

22521

2025-12-07 03:28:42

Liping Li

Liping Li, Zeyi Wang, Qian Zhai, Bo Wang, Jujia Zhang (YNAO); Xiaofeng Wang(THU)

LiONS

SN Ia

0.04

1

LiONS

The spectrum obtained by LJT is similar to that of an SN Ia.

2025TNSCR4867....1L

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
22522	2025-12-06 21:45:31	Lijiang-2.4m / YFOSC		Jujia Zhang		LiONS	tns_2025aful_2025-12-06_21-45-30.591_Lijiang-2.4m_YFOSC_LiONS.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 279671 of Group ZTF
Previous RA, DEC: 11:40:06.364, -09:28:31.34 (175.026516, -9.475373)
Updated RA, DEC: 11:40:06.332, -09:28:31.33 (175.0263821, -9.4753702)

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