2025onz | Transient Name Server

RA/DEC (2000)

17:53:32.105 +34:29:04.55

268.383770072 +34.4845965966

Type

SN Ia

Redshift

0.06

Discovery Report Classification Report

Reporting Group

ALeRCE

Discovering Data Source

ZTF

Discovery Date

2025-06-19 05:56:59.001

TNS AT

Y

Public

Y

Discovery Mag

20.7217

Filter

g-ZTF

Reporter/s

S. Jurado, F.E. Bauer, G. Pignata, F. Forster, A. Munoz-Arancibia, A. Mourao, L. Hernandez-Garcia, L. Galbany, J. Silva-Farfan, R. Dastidar, J.P. Brandt, A. Alvarez, G. Cabrera-Vives, R. Carrasco-Davis, P.A. Estevez, B. Gamboa, P. Huijse, H. Larranaga, C. Mansilla, K. Medina, D. Moreno, E. Munoz, E. Pizarro, I. Reyes, P. Sanchez-Saez, D. Rodriguez-Mancini, M. Catelan, S. Eyheramendy, M.J. Graham on behalf of the ALeRCE broker

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
	21454	2025-07-01 00:00:00	UH88 / SNIFS		C. Angus		SCAT	tns_2025onz_2025-07-01_UH88_SNIFS_SCAT.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

2025-06-22 01:02:12 - 2025-06-29 23:10:33

2460848.5432 - 2460856.465656

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
499427	2025-06-29 23:10:33	2460856.465656	18.36	0.1		ABMag	L-GOTO	GOTO-N_GOTO-2	180
499426	2025-06-22 01:02:12	2460848.5432			18.7	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-06-21 09:41:08 - 2025-06-21 09:41:08

2460847.9035648 - 2460847.9035648

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
497392	2025-06-21 09:41:08	2460847.9035648	19.7827	0.164665	20.5179	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2025-06-17 07:37:36 - 2025-06-19 05:56:59

2460843.8177778 - 2460845.7479051

4

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
497391	2025-06-19 05:56:59	2460845.7479051	20.7217	0.299795	20.646	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
499267	2025-06-19 05:56:59	2460845.7479051	20.7217	0.299795	20.646	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
497390	2025-06-17 07:37:36	2460843.8177778			20.5002	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF
499266	2025-06-17 07:37:36	2460843.8177778			20.5002	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

orange-ATLAS

ATLAS-MLO_ATLAS-01

2025-06-23 13:47:30 - 2025-06-23 13:47:30

2460850.07465 - 2460850.07465

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
499503	2025-06-23 13:47:30	2460850.07465			19.42	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2025-06-25 10:27:19 - 2025-06-25 10:27:19

2460851.93564 - 2460851.93564

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
499504	2025-06-25 10:27:19	2460851.93564	18.921	0.184	19.19	ABMag	cyan-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

w-P1

PS1_GPC1

2025-06-21 10:05:36 - 2025-06-21 10:05:36

2460847.92056 - 2460847.92056

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
497697	2025-06-21 10:05:36	2460847.92056	19.87	0.03	22	ABMag	w-P1	PS1_GPC1	45	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
260628	2025-06-30 10:31:32	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland et al.	ATLAS	ATLAS	17:53:32.105	+34:29:04.80	2025-06-25 10:27:19.296	18.921	cyan-ATLAS		PSN		ATLAS25gqa	ATLAS				N
260592	2025-06-30 06:58:23	GOTO_bot	A. Kumar, G. Ramsay, K. Ackley et al.	GOTO	GOTO	17:53:32.158	+34:29:04.63	2025-06-29 23:10:33.024	18.36	L-GOTO		Other		GOTO25emt	GOTO		This transient was discovered with the assistance of the GOTO Kilonova Seekers Citizen Scientists on Zooniverse. The candidate was flagged by volunteers: Cledison Marcos da Silva, M.T. Mazzucato, Mayahuel Torres Guerrero, Minrui Ning, Antonio Pasqua		N
260533	2025-06-29 18:15:59	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	17:53:32.107	+34:29:04.70	2025-06-19 05:56:59.001	20.7217	g-ZTF		PSN		ZTF25aawnphj	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF25aawnphj		N
259828	2025-06-23 20:38:41	PS1_Bot1	K. C. Chambers, T. de Boer, J. Fairlamb et al.	Pan-STARRS	Pan-STARRS	17:53:32.105	+34:29:04.55	2025-06-21 10:05:36.384	19.87	w-P1		PSN		PS25dov	Pan-STARRS				N
259651	2025-06-21 23:08:45	ALeRCE	S. Jurado, F.E. Bauer, G. Pignata et al.	ALeRCE	ZTF	17:53:32.110	+34:29:04.98	2025-06-19 05:56:59.001	20.7217	g-ZTF		PSN		ZTF25aawnphj	ZTF		Early SN candidate (r-rise > 0.21+-0.04 mag/day) classified using ALeRCE's stamp classifier (Carrasco-Davis et al. 2021) and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF25aawnphj	2025TNSTR2330....1J	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

21454

2025-07-02 10:10:57

Charlotte Angus

C. Angus (QUB) on behalf of SCAT

SCAT

SN Ia

0.06

1

SCAT

Spectrum taken with UH88/SNIFS on 01/07/2025. Template matches to SNe Ia. Redshift from template matching. Classification was done using SNID

2025TNSCR2527....1A

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
21454	2025-07-01 00:00:00	UH88 / SNIFS		C. Angus		SCAT	tns_2025onz_2025-07-01_UH88_SNIFS_SCAT.dat		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 259828 of Group Pan-STARRS
Previous RA, DEC: 17:53:32.110, +34:29:04.98 (268.38379198407, +34.484715445638)
Updated RA, DEC: 17:53:32.105, +34:29:04.55 (268.383770072, +34.4845965966)

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