2023gss | Transient Name Server

RA/DEC (2000)

14:04:23.541 -27:08:58.05

211.098087788 -27.149458211

Type

SN II

Redshift

0.020541

Discovery Report Classification Report

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2023-04-25 07:03:21.600

TNS AT

Y

Public

Y

Discovery Mag

18.88

Filter

r-ZTF

Reporter/s

C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) 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
	14870	2023-04-27 13:16:44	FTS / FLOYDS-S	3600	Las Cumbres Observatory	Megan Newsome	Global SN Project	tns_2023gss_2023-04-27_13-16-44_FTS_FLOYDS-S_Global_SN_Project.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

cyan-ATLAS

ATLAS-CHL_ATLAS-04

2023-04-24 06:17:56 - 2023-04-24 06:17:56

2460058.76245 - 2460058.76245

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
339555	2023-04-24 06:17:56	2460058.76245			19.46	ABMag	cyan-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-STH_ATLAS-03

2023-04-25 22:38:54 - 2023-04-25 22:38:54

2460060.44368 - 2460060.44368

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
339556	2023-04-25 22:38:54	2460060.44368	18.404	0.076	19.66	ABMag	orange-ATLAS	ATLAS-STH_ATLAS-03	30	Robot

BG-q-BlackGem

BG4_BlackGEM-Cam4

2023-03-24 04:16:28 - 2023-03-24 04:16:28

2460027.6781019 - 2460027.6781019

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
587543	2023-03-24 04:16:28	2460027.6781019			21.14	ABMag	BG-q-BlackGem	BG4_BlackGEM-Cam4	60	robotic	[Last non detection]

BG-q-BlackGem

BG3_BlackGEM-Cam3

2023-07-25 00:28:13 - 2023-07-25 00:28:13

2460150.5195949 - 2460150.5195949

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
587544	2023-07-25 00:28:13	2460150.5195949	18.87	0.06	20.19	ABMag	BG-q-BlackGem	BG3_BlackGEM-Cam3	60	robotic

BG-u-BlackGem

ML1_MeerLICHT-Cam

2023-04-20 01:51:52 - 2023-05-16 21:29:57

2460054.5776852 - 2460081.3957986

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
403821	2023-05-16 21:29:57	2460081.3957986	18.9	0.13	19.48	ABMag	BG-u-BlackGem	ML1_MeerLICHT-Cam	60	robotic
403820	2023-04-20 01:51:52	2460054.5776852			18.54	ABMag	BG-u-BlackGem	ML1_MeerLICHT-Cam	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2023-04-23 09:07:12 - 2023-04-25 07:03:22

2460057.88 - 2460059.794

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
339452	2023-04-25 07:03:22	2460059.794	18.88			ABMag	r-ZTF	P48_ZTF-Cam	30	ZTF
339451	2023-04-23 09:07:12	2460057.88			18.28	ABMag	r-ZTF	P48_ZTF-Cam	30	ZTF	[Last non detection]

g-ZTF

P48_ZTF-Cam

2023-04-25 08:02:24 - 2023-04-25 08:02:24

2460059.835 - 2460059.835

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
339453	2023-04-25 08:02:24	2460059.835	18.37			ABMag	g-ZTF	P48_ZTF-Cam	30	ZTF

w-P1

PS1_GPC1

2023-05-10 08:33:18 - 2023-05-10 08:33:18

2460074.85646 - 2460074.85646

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
341416	2023-05-10 08:33:18	2460074.85646	18.07	0.01	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

306336

2026-05-27 18:05:37

BlackGEM_Bot1

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

BlackGEM

BlackGEM

14:04:23.539

-27:08:58.12

2023-07-25 00:28:13.000

18.87

BG-q-BlackGem

PSN

BGEM J140423.54-270858.1

BlackGEM

N

209171

2024-05-02 22:44:55

BlackGEM_Bot1

F. Stoppa, P. Groot, G. Ramsay et al.

BlackGEM

BlackGEM

14:04:23.540

-27:08:58.35

2023-05-16 21:29:57.000

18.9

BG-u-BlackGem

1

PSN

MLT J140423.54-270858.3

BlackGEM

N

Related files

File	Comments	Last Modified (UT)	Modified By
tns_2023gss_atrep_209171_BlackGEM.pdf	Finding Chart	2024-05-02 22:44:56	BlackGEM_Bot1

177011

2023-05-10 23:59:39

PS1_Bot1

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

Pan-STARRS

Pan-STARRS

14:04:23.541

-27:08:58.05

2023-05-10 08:33:18.144

18.07

w-P1

PSN

PS23cxa

Pan-STARRS

N

175948

2023-04-26 07:08:02

ATLAS_Bot1

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

ATLAS

ATLAS

14:04:23.566

-27:08:58.28

2023-04-25 22:38:53.952

18.404

orange-ATLAS

PSN

ATLAS23jpn

ATLAS

N

175896

2023-04-25 09:23:10

ZTF_Bot1

C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration

ZTF

ZTF

14:04:23.555

-27:08:58.03

2023-04-25 07:03:21.600

18.88

r-ZTF

PSN

ZTF23aahqvtz

ZTF

2023TNSTR.916....1F

N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

14796

2023-04-27 17:20:28

Megan Newsome

Megan Newsome (LCO/UCSB), Joseph Farah, D. Andrew Howell, Curtis McCully, Estefania Padilla Gonzalez, Craig Pellegrino, Giacomo Terreran

Global SN Project

SN II

0.020541

1

Global SN Project

We find broad Ha in a rising blue target indicating a SN II at early phases. The supernova is closest to ESO 510- G 057 (z = 0.020541, 20096dF...C...0000J; value from NED). The g-band absolute magnitude roughly coeval with the spectrum is approximately -16.7 (apparent magnitude 18.1). The absolute magnitude, high velocities, and blue continuum indicate that the SN is young. Further followup is encouraged.

2023TNSCR.944....1N

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
14870	2023-04-27 13:16:44	FTS / FLOYDS-S	3600	Las Cumbres Observatory	Megan Newsome	Global SN Project	tns_2023gss_2023-04-27_13-16-44_FTS_FLOYDS-S_Global_SN_Project.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 177011 of Group Pan-STARRS
Previous RA, DEC: 14:04:23.555, -27:08:58.03 (211.0981449, -27.1494539)
Updated RA, DEC: 14:04:23.541, -27:08:58.05 (211.098087788, -27.149458211)

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