2025pb | Transient Name Server

RA/DEC (2000)

16:23:14.271 +40:55:20.06

245.80946433 +40.9222390465

Type

SN Ic

Redshift

0.05

Discovery Report Classification Report

Reporting Group

ALeRCE

Discovering Data Source

ZTF

Discovery Date

2025-01-15 11:18:27.999

TNS AT

Y

Public

Y

Host Name

SDSS J162314.32+405519.1

Discovery Mag

18.9727

Filter

g-ZTF

Reporter/s

A. Munoz-Arancibia, F.E. Bauer, G. Pignata, F. Forster, 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, 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
	21004	2025-04-24 17:58:01	Lick-3m / KAST	1500	P. Arunachalam (UCSC), K.C. Patra (UCSC)		UCSC	tns_2025pb_2025-04-24_17-58-01_Lick-3m_KAST_UCSC.flm		Object			The spectrum is most consistent with those of SNe Ic at +10 days; however, the light curve peaked ~70 days before our observation (around 2025 Feb 10).
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 The spectrum is most consistent with those of SNe Ic at +10 days; however, the light curve peaked ~70 days before our observation (around 2025 Feb 10).

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

Clear-

LAST_LAST-Cam

2024-03-13 02:49:10 - 2025-03-02 00:24:11

2460382.61748 - 2460736.51679

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
473028	2025-03-02 00:24:11	2460736.51679	18.75			ABMag	Clear-	LAST_LAST-Cam	360
473027	2024-03-13 02:49:10	2460382.61748			21.96	ABMag	Clear-	LAST_LAST-Cam	10360		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-01-13 05:59:10 - 2025-01-13 05:59:10

2460688.749417 - 2460688.749417

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465016	2025-01-13 05:59:10	2460688.749417			18.2	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

g-P1

PS2_GPC2

2025-02-20 15:42:03 - 2025-02-20 15:42:03

2460727.1542 - 2460727.1542

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
470941	2025-02-20 15:42:03	2460727.1542	18.75	0.1	21	ABMag	g-P1	PS2_GPC2	27	Robot

L-GOTO

GOTO-N_GOTO-1

2025-01-25 06:36:48 - 2025-01-25 06:36:48

2460700.775556 - 2460700.775556

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
465017	2025-01-25 06:36:48	2460700.775556	18.58	0.16		ABMag	L-GOTO	GOTO-N_GOTO-1	180

r-ZTF

P48_ZTF-Cam

2025-01-17 11:55:57 - 2025-01-17 11:55:57

2460692.9971875 - 2460692.9971875

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
462635	2025-01-17 11:55:57	2460692.9971875	18.671	0.091901	19.8008	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2025-01-12 12:50:59 - 2025-01-17 11:25:51

2460688.0354051 - 2460692.9762847

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
462634	2025-01-17 11:25:51	2460692.9762847	18.8249	0.116365	19.4587	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
462633	2025-01-15 11:18:28	2460690.9711574	18.9727	0.33241	18.5202	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
462632	2025-01-12 12:50:59	2460688.0354051			18.7939	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-01-12 15:15:28 - 2025-01-16 14:50:06

2460688.13574 - 2460692.11812

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
462861	2025-01-16 14:50:06	2460692.11812	18.874	0.195	18.9	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot
462860	2025-01-12 15:15:28	2460688.13574			18.25	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	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	ADS Bibcode	Unreal	Auto classification
246470	2025-03-02 06:23:20	LAST_Bot1	R. Konno (WIS),E. Zimmerman (WIS),A. Horowicz (WIS) et al.	LAST	LAST	16:23:14.312	+40:55:19.46	2025-03-02 00:24:10.656	18.75	Clear-		PSN			LAST				N
245591	2025-02-23 04:18:27	YSE_Bot1	D. O. Jones (UC Santa Cruz),K. D. French (Carnegie,Illinois) et al.	YSE	Pan-STARRS	16:23:14.271	+40:55:20.06	2025-02-20 15:42:02.880	18.75	g-P1		PSN		PS25we	Pan-STARRS				N
242647	2025-01-28 08:33:15	GOTO_bot	D. O'Neill,K. Ackley,M. Dyer et al.	GOTO	GOTO	16:23:14.286	+40:55:20.30	2025-01-25 06:36:48.384	18.58	L-GOTO		Other		GOTO25tf	GOTO				N
241359	2025-01-18 14:27:32	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland et al.	ATLAS	ATLAS	16:23:14.296	+40:55:19.88	2025-01-16 14:50:05.568	18.874	orange-ATLAS		PSN		ATLAS25amc	ATLAS				N
241269	2025-01-17 17:50:51	ALeRCE	A. Munoz-Arancibia,F.E. Bauer,G. Pignata et al.	ALeRCE	ZTF	16:23:14.277	+40:55:19.87	2025-01-15 11:18:27.999	18.9727	g-ZTF		PSN	SDSS J162314.32+405519.1	ZTF25aacdjzo	ZTF		Early SN candidate (r-rise > 0.12+-0.02 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/ZTF25aacdjzo	2025TNSTR.220....1M	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

21004

2025-05-08 20:54:27

Prasiddha Arunachalam

Prasiddha Arunachalam

UCSC

SN Ic

0.05

1

UCSC

2025TNSCR1722....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
21004	2025-04-24 17:58:01	Lick-3m / KAST	1500	P. Arunachalam (UCSC), K.C. Patra (UCSC)		UCSC	tns_2025pb_2025-04-24_17-58-01_Lick-3m_KAST_UCSC.flm		Object			The spectrum is most consistent with those of SNe Ic at +10 days; however, the light curve peaked ~70 days before our observation (around 2025 Feb 10).

Comments

Object coordinates updated

Object coordinates updated according to AT-report 245591 of Group Pan-STARRS
Previous RA, DEC: 16:23:14.277, +40:55:19.87 (245.80948826821, +40.92218477684)
Updated RA, DEC: 16:23:14.271, +40:55:20.06 (245.80946433, 40.9222390465)

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