2024xsk | Transient Name Server

RA/DEC (2000)

11:18:11.786 +26:03:23.40

169.549108 +26.0565

Type

SLSN-I

Redshift

0.1686

Discovery Report Classification Report

Related AstroNotes: 2025-41

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2024-10-03 12:37:42.003

TNS AT

Y

Public

Y

Discovery Mag

18.606

Filter

r-ZTF

Reporter/s

Nabeel Rehemtulla (CIERA, NU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

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
	20242	2025-01-24 11:01:34	Lick-3m / KAST		R. Michael Rich, K-Ryan Hinds, Jacob Wise	Jacob Wise	ZTF	tns_2024xsk_2025-01-24_11-01-34.23_Lick-3m_KAST_ZTF.txt		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
	18660	2024-11-05 05:21:46	LT / SPRAT	1200	J.H. Terwel	J.H. Terwel	TCD	tns_2024xsk_2024-11-05_05-21-46_LT_SPRAT_TCD.text		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

2024-07-01 21:16:22 - 2024-07-01 21:16:22

2460493.386375 - 2460493.386375

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
443334	2024-07-01 21:16:22	2460493.386375			18.7	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2024-10-20 06:10:38 - 2024-10-20 06:10:38

2460603.757393 - 2460603.757393

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
443335	2024-10-20 06:10:38	2460603.757393	17.94	0.19		ABMag	L-GOTO	GOTO-N_GOTO-1	180

BG-q-BlackGem

BG4_BlackGEM-Cam4

2024-01-25 05:03:27 - 2024-01-25 05:03:27

2460334.7107292 - 2460334.7107292

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
452368	2024-01-25 05:03:27	2460334.7107292			19.11	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic	[Last non detection]

BG-q-BlackGem

BG2_BlackGEM-Cam2

2024-12-10 08:06:31 - 2024-12-10 08:06:31

2460654.8378588 - 2460654.8378588

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
452369	2024-12-10 08:06:31	2460654.8378588	18.73	0.08	20.25	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic

r-ZTF

P48_ZTF-Cam

2024-10-03 12:36:06 - 2024-10-10 12:43:50

2460587.0250694 - 2460594.0304398

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
439035	2024-10-10 12:43:50	2460594.0304398	18.1607	0.108317		ABMag	r-ZTF	P48_ZTF-Cam
439034	2024-10-03 12:37:42	2460587.0261806	18.606	0.134488		ABMag	r-ZTF	P48_ZTF-Cam
439033	2024-10-03 12:36:06	2460587.0250694			19.1752	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2024-10-24 14:37:15 - 2024-10-24 14:37:15

2460608.1092 - 2460608.1092

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
441979	2024-10-24 14:37:15	2460608.1092	17.833	0.115	18.94	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2024-07-07 06:38:07 - 2024-07-07 06:38:07

2460498.77647 - 2460498.77647

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
441978	2024-07-07 06:38:07	2460498.77647			19.31	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot	[Last non detection]

i-P1

PS1_GPC1

2024-12-17 14:32:38 - 2024-12-17 14:32:38

2460662.106 - 2460662.106

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
460585	2024-12-17 14:32:38	2460662.106	18.68	0.04	20.7	ABMag	i-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

240300

2025-01-03 09:55:55

PS1_Bot1

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

Pan-STARRS

Pan-STARRS

11:18:11.758

+26:03:23.35

2024-12-17 14:32:38.400

18.68

i-P1

PSN

PS24oev

Pan-STARRS

N

235594

2024-12-10 14:39:02

BlackGEM_Bot1

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

BlackGEM

BlackGEM

11:18:11.786

+26:03:23.40

2024-12-10 08:06:31.000

18.73

BG-q-BlackGem

1

PSN

BGEM J111811.78+260323.4

BlackGEM

N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2024xsk_atrep_235594_BlackGEM.pdf	Finding Chart	2024-12-10 14:39:03	BlackGEM_Bot1

230943

2024-10-29 17:01:51

GOTO_bot

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

GOTO

GOTO

11:18:11.738

+26:03:23.45

2024-10-20 06:10:38.496

17.94

L-GOTO

Other

GOTO24hpx

GOTO

N

230281

2024-10-24 22:13:47

ATLAS_Bot1

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

ATLAS

ATLAS

11:18:11.758

+26:03:23.72

2024-10-24 14:37:14.880

17.833

orange-ATLAS

PSN

ATLAS24ppu

ATLAS

N

228716

2024-10-10 12:51:57

Fritz

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

ZTF

ZTF

11:18:11.757

+26:03:23.51

2024-10-03 12:37:42.003

18.606

r-ZTF

PSN

ZTF24ablestl

ZTF

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

2024TNSTR3946....1R

N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

20242

2025-01-27 02:29:01

Jacob Wise

Jacob Wise (LJMU), K-Ryan Hinds (LJMU), Daniel Perley (LJMU), R. Michael Rich (UCLA)

ZTF

SLSN-I

0.1686

1

ZTF

Spectrum is well-fit by SLSN-I and Ic-BL template spectra from previously classified events at a redshift of z = 0.1686, with the best fits to SLSN-I events. Redshift obtained using host galaxy H-alpha and [OIII] emission lines. Classification performed using Next Generation Superfit (NGSF, Goldwasser et al. 2022).

2025TNSCR.380....1W

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2024xsk_atrep_20242_ZTF.pdf	NGSF fits	2025-01-27 02:29:01	Jacob Wise

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
20242	2025-01-24 11:01:34	Lick-3m / KAST		R. Michael Rich, K-Ryan Hinds, Jacob Wise	Jacob Wise	ZTF	tns_2024xsk_2025-01-24_11-01-34.23_Lick-3m_KAST_ZTF.txt		Object

18565

2024-11-06 09:31:59

Jacco Terwel

J.H. Terwel, U. Burgaz, K. Maguire, R. Seth, C. O'Donnell, T.E. Müller-Bravo, C.G. Touchard-Paxton

TCD

SN I

0.05

1

TCD

Good match with SN 2002bj

2024TNSCR4358....1T

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
18660	2024-11-05 05:21:46	LT / SPRAT	1200	J.H. Terwel	J.H. Terwel	TCD	tns_2024xsk_2024-11-05_05-21-46_LT_SPRAT_TCD.text		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 235594 of Group BlackGEM
Previous RA, DEC: 11:18:11.757, +26:03:23.51 (169.5489862, +26.0565317)
Updated RA, DEC: 11:18:11.786, +26:03:23.40 (169.549108, 26.0565)

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