2025alk | Transient Name Server

RA/DEC (2000)

08:27:25.176 +01:50:52.46

126.854901927 +1.84790524929

Type

SN II

Redshift

0.031422

Discovery Report Classification Report

Reporting Group

GOTO

Discovering Data Source

GOTO

Discovery Date

2025-01-30 12:47:10.464

TNS AT

Y

Public

Y

Discovery Mag

18.89

Filter

L-GOTO

Reporter/s

D. O'Neill, K. Ackley, M. Dyer, F. Jiménez-Ibarra, J. Lyman, K. Ulaczyk, D. Steeghs, D. Galloway, V. Dhillon, P. O'Brien, G. Ramsay, K. Noysena, R. Kotak, R. Breton, L. Nuttall, E. Pallé, D. Pollacco, T. Killestein, A. Kumar, on behalf of GOTO collaboration

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
	20370	2025-02-08 04:49:18	P60 / SEDM	2700	SEDmRobot		ZTF	tns_2025alk_2025-02-08_04-49-17.714054_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

Clear-

LAST_LAST-Cam

2025-02-27 17:51:26 - 2025-02-27 18:58:23

2460734.24405 - 2460734.29054

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
472360	2025-02-27 18:58:23	2460734.29054	19.87			ABMag	Clear-	LAST_LAST-Cam	400
472359	2025-02-27 17:51:26	2460734.24405			20.58	ABMag	Clear-	LAST_LAST-Cam	400		[Last non detection]

L-GOTO

GOTO-S_GOTO-4

2025-01-27 12:24:54 - 2025-01-30 12:47:10

2460703.017291 - 2460706.032759

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465548	2025-01-30 12:47:10	2460706.032759	18.89	0.1		ABMag	L-GOTO	GOTO-S_GOTO-4	180
465547	2025-01-27 12:24:54	2460703.017291			19.9	ABMag	L-GOTO	GOTO-S_GOTO-4	180		[Last non detection]

w-P1

PS2_GPC2

2025-02-17 06:56:41 - 2025-02-17 06:56:41

2460723.78936 - 2460723.78936

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
474128	2025-02-17 06:56:41	2460723.78936	19.05	0.02	22	ABMag	w-P1	PS2_GPC2	45	Robot

cyan-ATLAS

ATLAS-CHL_ATLAS-04

2025-02-01 05:34:10 - 2025-02-01 05:34:10

2460707.73206 - 2460707.73206

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465970	2025-02-01 05:34:10	2460707.73206	19.082	0.159	19.45	ABMag	cyan-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot

orange-ATLAS

ATLAS-STH_ATLAS-03

2025-01-30 00:10:47 - 2025-01-30 00:10:47

2460705.50749 - 2460705.50749

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465969	2025-01-30 00:10:47	2460705.50749			19.45	ABMag	orange-ATLAS	ATLAS-STH_ATLAS-03	30	Robot	[Last non detection]

BG-q-BlackGem

BG4_BlackGEM-Cam4

2025-01-31 05:25:33 - 2025-01-31 05:25:33

2460706.7260764 - 2460706.7260764

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465725	2025-01-31 05:25:33	2460706.7260764	19.17	0.08	20.91	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic

BG-q-BlackGem

ML1_MeerLICHT-Cam

2021-04-28 09:29:59 - 2021-04-28 09:29:59

2459332.8958218 - 2459332.8958218

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465724	2021-04-28 09:29:59	2459332.8958218			20.82	ABMag	BG-q-BlackGem	ML1_MeerLICHT-Cam	60	robotic	[Last non detection]

i-ZTF

P48_ZTF-Cam

2025-01-24 10:13:47 - 2025-01-24 10:13:47

2460699.9262384 - 2460699.9262384

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
466773	2025-01-24 10:13:47	2460699.9262384			19.1583	ABMag	i-ZTF	P48_ZTF-Cam			[Last non detection]

r-ZTF

P48_ZTF-Cam

2025-01-30 07:05:28 - 2025-02-04 05:28:42

2460705.795463 - 2460710.7282639

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
466775	2025-02-04 05:28:42	2460710.7282639	19.0511	0.159242		ABMag	r-ZTF	P48_ZTF-Cam
466774	2025-01-30 07:05:28	2460705.795463	19.5263	0.172233		ABMag	r-ZTF	P48_ZTF-Cam

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

247135

2025-03-08 18:03:44

PS1_Bot1

K. C. Chambers,T. de Boer,J. Fairlamb et al.

Pan-STARRS

Pan-STARRS

08:27:25.176

+01:50:52.46

2025-02-17 06:56:40.704

19.05

w-P1

PSN

PS25zp

Pan-STARRS

N

246180

2025-02-27 21:31:33

LAST_Bot1

R. Konno (WIS),E. Zimmerman (WIS),A. Horowicz (WIS) et al.

LAST

LAST

08:27:25.193

+01:50:53.15

2025-02-27 18:58:22.656

19.87

Clear-

PSN

LAST

N

243405

2025-02-04 05:52:24

Fritz

Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al.

ZTF

ZTF

08:27:25.185

+01:50:52.60

2025-01-30 07:05:28.003

19.5263

r-ZTF

PSN

ZTF25aadeltq

ZTF

N

243103

2025-02-01 11:03:35

ATLAS_Bot1

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

ATLAS

ATLAS

08:27:25.201

+01:50:52.72

2025-02-01 05:34:09.984

19.082

cyan-ATLAS

PSN

ATLAS25ben

ATLAS

N

242995

2025-01-31 08:32:03

BlackGEM_Bot1

G. Ramsay,H. Tranin,F. Stoppa et al.

BlackGEM

BlackGEM

08:27:25.173

+01:50:52.45

2025-01-31 05:25:33.000

19.17

BG-q-BlackGem

1

PSN

BGEM J082725.17+015052.4

BlackGEM

N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2025alk_atrep_242995_BlackGEM.pdf	Finding Chart	2025-01-31 08:32:05	BlackGEM_Bot1

242918

2025-01-30 13:40:19

GOTO_bot

D. O'Neill,K. Ackley,M. Dyer et al.

GOTO

GOTO

08:27:25.162

+01:50:52.54

2025-01-30 12:47:10.464

18.89

L-GOTO

Other

GOTO25xp

GOTO

2025TNSTR.416....1O

N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

20370

2025-02-10 20:24:51

ZTF_Bot1

J. Sollerman, S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN II

0.031422

1

ZTF

2025TNSCR.575....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
20370	2025-02-08 04:49:18	P60 / SEDM	2700	SEDmRobot		ZTF	tns_2025alk_2025-02-08_04-49-17.714054_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 247135 of Group Pan-STARRS
Previous RA, DEC: 08:27:25.173, +01:50:52.45 (126.854888, +1.847903)
Updated RA, DEC: 08:27:25.176, +01:50:52.46 (126.854901927, 1.84790524929)

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Object coordinates updated

Object coordinates updated according to AT-report 242995 of Group BlackGEM
Previous RA, DEC: 08:27:25.162, +01:50:52.54 (126.85484, +1.847928)
Updated RA, DEC: 08:27:25.173, +01:50:52.45 (126.854888, 1.847903)

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