2025acvj | Transient Name Server

RA/DEC (2000)

02:15:50.332 -59:55:41.21

33.959717 -59.928114

Type

SN Ia

Redshift

0.03042

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-11-07 21:37:52.320

TNS AT

Y

Public

Y

Discovery Mag

18.1

Filter

orange-ATLAS

Reporter/s

J. Tonry, L. Denneau, H. Weiland, R. Siverd (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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (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

▌

ATLAS-CHL_ATLAS-04_orange

▌

ATLAS-STH_ATLAS-03_orange

▌

BG3_BlackGEM-Cam3_BG-q

▌

BG2_BlackGEM-Cam2_BG-q

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
	22462	2025-11-26 12:08:00	ANU-2.3m / WiFeS	1800	B Schmidt	C. Lidman	Supernova Alliance	tns_2025acvj_2025-11-26_12-08-00_ANU-2.3m_WiFeS_Supernova_Alliance.dat		Object			Blue Arm of WiFES was off-line, so only red-arm.
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 Blue Arm of WiFES was off-line, so only red-arm.

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

orange-ATLAS

ATLAS-CHL_ATLAS-04

2025-11-06 05:03:35 - 2025-11-06 05:03:35

2460985.71082 - 2460985.71082

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
529852	2025-11-06 05:03:35	2460985.71082			18.41	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-STH_ATLAS-03

2025-11-07 21:37:52 - 2025-11-07 21:37:52

2460987.4013 - 2460987.4013

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
529853	2025-11-07 21:37:52	2460987.4013	18.1	0.155	18.34	ABMag	orange-ATLAS	ATLAS-STH_ATLAS-03	30	Robot

BG-q-BlackGem

BG3_BlackGEM-Cam3

2025-11-16 03:43:14 - 2025-11-16 03:43:14

2460995.6550231 - 2460995.6550231

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
531404	2025-11-16 03:43:14	2460995.6550231	17.21	0.04	20.85	ABMag	BG-q-BlackGem	BG3_BlackGEM-Cam3	60	robotic

BG-q-BlackGem

BG2_BlackGEM-Cam2

2024-08-12 06:15:38 - 2024-08-12 06:15:38

2460534.7608565 - 2460534.7608565

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
531403	2024-08-12 06:15:38	2460534.7608565			21.16	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic	[Last non detection]

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
277029	2025-11-16 08:06:02	BlackGEM_Bot1	G. Ramsay, H. Tranin, F. Stoppa et al.	BlackGEM	BlackGEM	02:15:50.332	-59:55:41.21	2025-11-16 03:43:14.000	17.21	BG-q-BlackGem		PSN		BGEM J021550.33-595541.2	BlackGEM				N
276130	2025-11-09 15:14:40	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	02:15:50.355	-59:55:41.53	2025-11-07 21:37:52.320	18.1	orange-ATLAS		PSN		ATLAS25nzc	ATLAS			2025TNSTR4490....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

22461

2025-11-28 05:37:07

Brian Schmidt

B. Schmidt (ANU), K. Auchettl (University of Melbourne/UCSC), C. Lidman (ANU), B. Martin (ANU), Anais Moller (Swinburne), L. Rauf (ANU), Sara Romagnoli (University of Melbourne), Jennifer Shi (University of Melbourne), and B. E. Tucker (ANU)

Supernova Alliance

SN Ia

0.03042

1

Supernova Alliance

Classified as SN Ia a week after max with Superfit

2025TNSCR4752....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
22462	2025-11-26 12:08:00	ANU-2.3m / WiFeS	1800	B Schmidt	C. Lidman	Supernova Alliance	tns_2025acvj_2025-11-26_12-08-00_ANU-2.3m_WiFeS_Supernova_Alliance.dat		Object			Blue Arm of WiFES was off-line, so only red-arm.

Comments

Object coordinates updated

Object coordinates updated according to AT-report 277029 of Group BlackGEM
Previous RA, DEC: 02:15:50.355, -59:55:41.53 (33.9598127273, -59.9282018182)
Updated RA, DEC: 02:15:50.332, -59:55:41.21 (33.959717, -59.928114)

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