2025ddd | Transient Name Server

RA/DEC (2000)

16:16:23.448 +12:35:30.06

244.0976999 +12.5916821

Type

SN Ia

Redshift

0.05

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-03-02 12:29:57.120

TNS AT

Y

Public

Y

Discovery Mag

18.864

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), 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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa (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
	20552	2025-03-10 11:32:44	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2025ddd_2025-03-10_11-32-43.576983_P60_SEDM_ZTF.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

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

L-GOTO

GOTO-S_GOTO-3

2025-03-02 17:56:20 - 2025-03-02 17:56:20

2460737.247446 - 2460737.247446

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473414	2025-03-02 17:56:20	2460737.247446	18.76	0.05		ABMag	L-GOTO	GOTO-S_GOTO-3	360

L-GOTO

GOTO-N_GOTO-1

2025-02-27 04:27:08 - 2025-02-27 04:27:08

2460733.685506 - 2460733.685506

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473413	2025-02-27 04:27:08	2460733.685506			19.7	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

BG-q-BlackGem

BG4_BlackGEM-Cam4

2025-02-25 07:21:26 - 2025-02-25 07:21:26

2460731.8065509 - 2460731.8065509

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
474826	2025-02-25 07:21:26	2460731.8065509			20.63	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic	[Last non detection]

BG-q-BlackGem

BG2_BlackGEM-Cam2

2025-03-11 09:03:47 - 2025-03-11 09:03:47

2460745.8776273 - 2460745.8776273

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
474827	2025-03-11 09:03:47	2460745.8776273	17.86	0.03	21.04	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic

r-ZTF

P48_ZTF-Cam

2025-02-27 09:06:34 - 2025-02-27 09:06:34

2460733.8795602 - 2460733.8795602

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473524	2025-02-27 09:06:34	2460733.8795602			19.4353	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2025-02-27 09:56:09 - 2025-03-05 13:10:11

2460733.9139931 - 2460740.0487384

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473526	2025-03-05 13:10:11	2460740.0487384	18.1066	0.11206		ABMag	g-ZTF	P48_ZTF-Cam
473525	2025-02-27 09:56:09	2460733.9139931	19.6639	0.249196		ABMag	g-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-02-26 15:47:57 - 2025-03-02 12:29:57

2460733.1583 - 2460737.0208

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473111	2025-03-02 12:29:57	2460737.0208	18.864	0.129	19.57	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot
473110	2025-02-26 15:47:57	2460733.1583			19.15	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[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

Bibcode

Unreal

Auto classification

247650

2025-03-11 12:29:08

BlackGEM_Bot1

F. Stoppa,H. Tranin,D. Pieterse et al.

BlackGEM

BlackGEM

16:16:23.440

+12:35:29.64

2025-03-11 09:03:47.000

17.86

BG-q-BlackGem

1

PSN

BGEM J161623.43+123529.6

BlackGEM

N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025ddd_atrep_247650_BlackGEM.pdf	Finding Chart	2025-03-11 12:29:11	BlackGEM_Bot1

246758

2025-03-05 13:30:54

Fritz

Nabeel Rehemtulla (CIERA,NU),Christoffer Fremling (Caltech) et al.

ZTF

ZTF

16:16:23.448

+12:35:30.06

2025-02-27 09:56:09.003

19.6639

g-ZTF

PSN

ZTF25aaisfid

ZTF

Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167).

N

246718

2025-03-05 07:55:11

GOTO_bot

D. O'Neill,G. Ramsay,K. Ackley et al.

GOTO

GOTO

16:16:23.430

+12:35:29.90

2025-03-02 17:56:19.680

18.76

L-GOTO

Other

GOTO25azp

GOTO

N

246508

2025-03-02 17:45:20

ATLAS_Bot1

J. Tonry,L. Denneau,H. Weiland et al.

ATLAS

ATLAS

16:16:23.459

+12:35:30.05

2025-03-02 12:29:57.120

18.864

orange-ATLAS

PSN

ATLAS25chv

ATLAS

2025TNSTR.858....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

20552

2025-03-10 12:24:58

ZTF_Bot1

C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore

ZTF

SN Ia

0.05

1

ZTF

2025TNSCR.946....1F

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
20552	2025-03-10 11:32:44	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2025ddd_2025-03-10_11-32-43.576983_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 246758 of Group ZTF
Previous RA, DEC: 16:16:23.459, +12:35:30.05 (244.097744444, +12.59168)
Updated RA, DEC: 16:16:23.448, +12:35:30.06 (244.0976999, 12.5916821)

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