2017esb | Transient Name Server

RA/DEC (2000)

13:09:36.022 -18:58:19.56

197.40009 -18.9721

Type

SN Ia

Redshift

0.035

Discovery Report Classification Report

Reporting Group

ASAS-SN

Discovering Data Source

ASAS-SN

Discovery Date

2017-06-12 03:36:00.000

TNS AT

Public

Host Name

ESO 575- G 066

Host Redshift

0.035478

Discovery Mag

16.6

Filter

V-Johnson

Reporter/s

D. Bersier, J. V. Shields, K. Z. Stanek, for the ASAS-SN team

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

ASASSN-2_Cassius_V

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	Spec. Type
	1054	2017-06-21 00:33:00	SOAR / Goodman	1800	Kilpatrick	Pan	None	tns_2017esb_2017-06-21_00-33-00_SOAR_Goodman.flm	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
	1047	2017-06-15 22:17:42	LT / SPRAT	500	David Bersier	David Bersier	ASAS-SN	tns_2017esb_2017-06-15_22-17-42_LT_SPRAT_ASAS-SN.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

V-Johnson

ASASSN-2_Cassius

2017-06-10 04:04:48 - 2017-06-13 00:28:48

2457914.67 - 2457917.52

Photometry

ID	Obs-date	JD	Mag. / Flux	Lim. Mag./Flux	Units	Filter	Tel / Inst	Remarks
17830	2017-06-13 00:28:48	2457917.52	17		VegaMag	V-Johnson	ASASSN-2_Cassius
17829	2017-06-12 03:36:00	2457916.65	16.6		VegaMag	V-Johnson	ASASSN-2_Cassius
17828	2017-06-10 04:04:48	2457914.67		17	STMag	V-Johnson	ASASSN-2_Cassius	[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
12033	2017-06-14 17:51:14	Krzysztof Stanek	D. Bersier, J. V. Shields, K. Z. Stanek et al.	ASAS-SN	ASAS-SN	13:09:36.022	-18:58:19.56	2017-06-12 03:36:00.000	16.6	V-Johnson		PSN	ESO 575- G 066	ASASSN-17hp	ASAS-SN		In two epochs, nuclear transient, so could also be a TDE	2017TNSTR.652....1B	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

1051

2017-07-02 17:30:36

Charles Kilpatrick

Kilpatrick

None

SN Ia

0.035

We measure a Si II 6355 velocity of -11,200 km/s. Best match is a Ia at +8 days.

2017TNSCR1528....1K

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
1054	2017-06-21 00:33:00	SOAR / Goodman	1800	Kilpatrick	Pan	None	tns_2017esb_2017-06-21_00-33-00_SOAR_Goodman.flm		Object

1044

2017-06-21 17:35:22

David Bersier

Subhash Bose, Subo Dong, David Bersier

ASAS-SN

SN Ia

0.035

ASAS-SN

Comparison with a library of spectra (with SNID) shows that ASASSN-17hp is a type Ia SN a few days past maximum light, at a redshift of 0.035, consistent with the redshift of the host galaxy.

2017TNSCR.679....1B

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
1047	2017-06-15 22:17:42	LT / SPRAT	500	David Bersier	David Bersier	ASAS-SN	tns_2017esb_2017-06-15_22-17-42_LT_SPRAT_ASAS-SN.dat		Object

SN 2017esb

Spectra

Light curves

Comments