2021knj | Transient Name Server

RA/DEC (2000)

14:36:23.135 -00:35:03.18

219.096393996 -0.584217305328

Type

SN Ia-91T-like

Redshift

0.08

Discovery Report Classification Report

Related AstroNotes: 2021-157

Reporting Group

DESIRT

Discovering Data Source

DESIRT

Discovery Date

2021-04-25 04:33:44.281

TNS AT

Public

Discovery Mag

20.06

Filter

r-Sloan

Reporter/s

Lei Hu (Purple Mountain Observatory), Xingzhuo Chen (Texas A&M U.), Jiawen Yang (Texas A&M U.), Jian Tao (Texas A&M U.), Lifan Wang (Texas A&M U.), Xiaofeng Wang (Tsinghua University), Antonella Palmese (KICP), Dietrich Baade (ESO), Peter Brown (Texas A&M U.), Segev BenZvi (U. of Rochester), Jeffery Cooke (Swinburne U.), Kyle Dawson (The University of Utah), Melissa Graham (University of Washington), Ji-an Jiang (The University of Tokyo), Alex Kim (LBNL), Anton Koekemoer (STSci), Wenxiong Li (Tel Aviv U.), Jeremy Mould (Swinburne U.), Peter Nugent (LBNL), Ferdinando Patat (ESO), Syed A. Uddin (Carnegie Observatories), Jujia Zhang (Yunnan Astronomical Observatory)

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	Spec. Type
	9600	2021-05-04 10:27:50	Lick-3m / KAST		Thomas Brink	Thomas Brink	DESIRT	tns_2021knj_2459338.936_Lick-3m_KAST_DESIRT.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
	9571	2021-05-04 08:59:54	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2021knj_2021-05-04_08-59-54.005187_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

w-P1

PS2_GPC2

2021-05-01 08:12:29 - 2021-05-01 08:12:29

2459335.842 - 2459335.842

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
212122	2021-05-01 08:12:29	2459335.842	18.71	0.05	22	ABMag	w-P1	PS2_GPC2	45	Robot

r-ZTF

P48_ZTF-Cam

2021-04-24 06:43:12 - 2021-04-24 06:43:12

2459328.78 - 2459328.78

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
209149	2021-04-24 06:43:12	2459328.78			19.6	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2021-04-20 08:39:41 - 2021-04-30 05:38:57

2459324.8608912 - 2459334.7353819

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
209150	2021-04-30 05:38:57	2459334.7353819	18.7005	0.0805533	20.4338	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
212735	2021-04-30 05:38:57	2459334.7353819	18.7005	0.080553	20.4338	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
212734	2021-04-20 08:39:41	2459324.8608912			20.3768	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

r-Sloan

CTIO-4m_DECAM

2021-04-25 04:33:44 - 2021-04-25 04:33:44

2459329.6900958 - 2459329.6900958

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
208861	2021-04-25 04:33:44	2459329.6900958	20.06	0.02		ABMag	r-Sloan	CTIO-4m_DECAM

g-Sloan

CTIO-4m_DECAM

2021-04-18 07:25:05 - 2021-04-25 07:10:29

2459322.8090825 - 2459329.7989491

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Remarks
208862	2021-04-25 07:10:29	2459329.7989491	19.87	0.04		ABMag	g-Sloan	CTIO-4m_DECAM
359443	2021-04-25 04:32:25	2459329.6891782	18.8158	0.00524618		ABMag	g-Sloan	CTIO-4m_DECAM
208860	2021-04-18 07:25:05	2459322.8090825			23.8	ABMag	g-Sloan	CTIO-4m_DECAM	[Last non detection]
359442	2021-04-18 07:25:05	2459322.8090825			23.7104	ABMag	g-Sloan	CTIO-4m_DECAM	[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2021-04-24 09:57:36 - 2021-04-24 09:57:36

2459328.915 - 2459328.915

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
209291	2021-04-24 09:57:36	2459328.915			18.57	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot	[Last non detection]

orange-ATLAS

ATLAS-HKO_ATLAS-02

2021-04-30 10:33:36 - 2021-04-30 10:33:36

2459334.94 - 2459334.94

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
209292	2021-04-30 10:33:36	2459334.94	18.765	0.161	19.04	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	30	Robot

w-P1

PS1_GPC1

2021-05-08 09:36:00 - 2021-05-08 09:36:00

2459342.9 - 2459342.9

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
212123	2021-05-08 09:36:00	2459342.9	18.43	0.02	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	AT Type	Host name	Internal name	Assoc. Groups	Remarks	ADS Bibcode	Unreal
186049	2023-08-25 23:49:29	DESIRT_Bot	Aidan Catalano (Carnegie Mellon U.),Brendan O'Connor (Carnegie Mellon U.),Antonella Palmese (Carnegie Mellon U.) et al.	DESIRT	DESIRT	14:36:23.087	-00:35:03.66	2021-04-25 04:32:25.152	18.8158	g-Sloan	PSN		T202104251436230m003503	DESIRT			N
109273	2021-05-11 19:14:36	Fink	Julien Peloton,Anais Moller,Emille E. O. Ishida on behalf of the Fink broker et al.	Fink	ZTF	14:36:23.136	-00:35:03.24	2021-04-30 05:38:56.996	18.7005	g-ZTF	PSN		ZTF21aaxtrlt	ZTF	Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at http://134.158.75.151:24000/ZTF21aaxtrlt		N
109017	2021-05-10 10:34:32	PS1_Bot1	K. C. Chambers,T. de Boer,J. Bulger et al.	Pan-STARRS	Pan-STARRS	14:36:23.135	-00:35:03.18	2021-05-08 09:36:00.000	18.43	w-P1	PSN		PS21dqy	Pan-STARRS			N
109016	2021-05-10 10:34:19	PS2_Bot1	K. C. Chambers,T. de Boer,J. Bulger et al.	Pan-STARRS	Pan-STARRS	14:36:23.123	-00:35:03.20	2021-05-01 08:12:28.800	18.71	w-P1	PSN		PS21dqy	Pan-STARRS			N
107895	2021-04-30 23:50:51	ATLAS_Bot1	J. Tonry,L. Denneau,A. Heinze et al.	ATLAS	ATLAS	14:36:23.120	-00:35:03.14	2021-04-30 10:33:36.000	18.765	orange-ATLAS	PSN		ATLAS21npd	ATLAS			N
107832	2021-04-30 20:17:16	ALeRCE	A. Munoz-Arancibia,F. Forster,F.E. Bauer et al.	ALeRCE	ZTF	14:36:23.132	-00:35:03.21	2021-04-30 05:38:56.996	18.7005	g-ZTF	PSN	WISEA J143623.14-003506.2	ZTF21aaxtrlt	ZTF	Early SN candidate (g-rise > 0.17+-0.01 mag/day) classified using ALeRCE's stamp classifier - see http://arxiv.org/abs/2008.03309 - and the public ZTF stream. Discovery image and light curve in http://alerce.online/object/ZTF21aaxtrlt		N
107684	2021-04-27 02:09:26	Jiawen Yang	Lei Hu (Purple Mountain Observatory),Xingzhuo Chen (Texas A&M U.),Jiawen Yang (Texas A&M U.) et al.	DESIRT	DESIRT	14:36:23.136	-00:35:03.24	2021-04-25 04:33:44.281	20.06	r-Sloan	PSN			DESIRT		2021TNSTR1366....1H	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

9590

2021-05-10 06:48:11

Jiawen Yang

Thomas Brink (UCB), Alexei V. Filippenko (UCB), Weikang Zhang (UCB), Yi Yang (UCB), Jiawen Yang (TAMU), Lei Hu (PMO), Xingzhuo Chen (TAMU), and Lifan Wang (TAMU)

DESIRT

SN Ia-91T-like

0.08

DESIRT

2021TNSCR1565....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
9600	2021-05-04 10:27:50	Lick-3m / KAST		Thomas Brink	Thomas Brink	DESIRT	tns_2021knj_2459338.936_Lick-3m_KAST_DESIRT.flm		Object

9561

2021-05-05 23:46:10

ZTF_Bot1

A. Dahiwale, C. Fremling(Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN Ia

0.08203

ZTF

2021TNSCR1482....1D

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
9571	2021-05-04 08:59:54	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2021knj_2021-05-04_08-59-54.005187_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 109017 of Group Pan-STARRS1
Previous RA, DEC: 14:36:23.123, -00:35:03.20 (219.096344575, -0.584223379471)
Updated RA, DEC: 14:36:23.135, -00:35:03.18 (219.096393996, -0.584217305328)

Object coordinates updated

Object coordinates updated according to AT-report 109016 of Group Pan-STARRS1
Previous RA, DEC: 14:36:23.132, -00:35:03.21 (219.0963829, -0.5842257)
Updated RA, DEC: 14:36:23.123, -00:35:03.20 (219.096344575, -0.584223379471)

Object coordinates updated

Object coordinates updated according to AT-report 107832 of Group ZTF
Previous RA, DEC: 14:36:23.136, -00:35:03.24 (219.09639832, -0.58423269)
Updated RA, DEC: 14:36:23.132, -00:35:03.21 (219.0963829, -0.5842257)

SN 2021knj

Spectra

Light curves

Comments

Object coordinates updated

Object coordinates updated

Object coordinates updated