2021udu | Transient Name Server

RA/DEC (2000)

18:57:35.962 +42:48:07.23

284.39984073333 +42.802009533333

Type

SN Ia

Redshift

0.058

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2021-07-27 10:59:31.200

TNS AT

Y

Public

Y

Discovery Mag

18.908

Filter

orange-ATLAS

Reporter/s

J. Tonry, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, O. McBrien, M. Fulton, J. Gillanders, C. Webb (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

P48_ZTF-Cam_r

▌

P48_ZTF-Cam_g

▌

ATLAS-MLO_ATLAS-01_orange

▌

ATLAS-HKO_ATLAS-02_orange

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
	10286	2021-08-02 10:29:38	UH88 / SNIFS	1800	de Jaeger	Thomas de Jaeger	SCAT	tns_2021udu_2459428.937251_UH88_SNIFS_SCAT.dat		Object			Reduced with a summit-based quick-reduction pipeline.
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 Reduced with a summit-based quick-reduction pipeline.

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

r-ZTF

P48_ZTF-Cam

2021-08-01 07:56:24 - 2021-08-01 07:56:24

2459427.8308333 - 2459427.8308333

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
231424	2021-08-01 07:56:24	2459427.8308333	19.2829	0.108277	20.6793	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF

g-ZTF

P48_ZTF-Cam

2021-07-28 08:08:00 - 2021-08-01 07:13:55

2459423.8388889 - 2459427.801331

3

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
231423	2021-08-01 07:13:55	2459427.801331	19.7198	0.193114	20.8621	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
231422	2021-07-30 06:13:39	2459425.7594792	19.7571	0.140502	20.8219	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF
231421	2021-07-28 08:08:00	2459423.8388889			19.7047	ABMag	g-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF

orange-ATLAS

ATLAS-MLO_ATLAS-01

2021-07-27 10:59:31 - 2021-07-27 10:59:31

2459422.958 - 2459422.958

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
230541	2021-07-27 10:59:31	2459422.958	18.908	0.187	19.11	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot

orange-ATLAS

ATLAS-HKO_ATLAS-02

2021-07-25 09:40:19 - 2021-07-25 09:40:19

2459420.903 - 2459420.903

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
230540	2021-07-25 09:40:19	2459420.903			19.03	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
118758	2021-08-02 00:23:15	ALeRCE	F. Forster, F.E. Bauer, G. Pignata et al.	ALeRCE	ZTF	18:57:35.962	+42:48:07.23	2021-07-30 06:13:39.003	19.7571	g-ZTF		PSN	WISEA J185735.95+424807.7	ZTF21abppeza	ALeRCE		Early SN candidate (g-rise > 0.10+-0.01 mag/day, r-rise > 0.07+-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/ZTF21abppeza		N
118378	2021-07-27 16:19:28	ATLAS_Bot1	J. Tonry, L. Denneau, A. Heinze et al.	ATLAS	ATLAS	18:57:35.946	+42:48:07.42	2021-07-27 10:59:31.200	18.908	orange-ATLAS		PSN		ATLAS21bciy	ATLAS			2021TNSTR2572....1T	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

10270

2021-08-02 11:16:25

Thomas de Jaeger

Thomas de Jaeger

SCAT

SN Ia

0.058

1

SCAT

Spectrum matches normal Type Ia SN around maximum light. Classification and age from template cross-correlation with SNID (Blondin & Tonry 2007). Best match is 2006cm -2d. Redshift from narrow host lines.

2021TNSCR2660....1J

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
10286	2021-08-02 10:29:38	UH88 / SNIFS	1800	de Jaeger	Thomas de Jaeger	SCAT	tns_2021udu_2459428.937251_UH88_SNIFS_SCAT.dat		Object			Reduced with a summit-based quick-reduction pipeline.

Comments

Object coordinates updated

Object coordinates updated according to AT-report 118758 of Group ZTF
Previous RA, DEC: 18:57:35.946, +42:48:07.42 (284.399773333, +42.8020616667)
Updated RA, DEC: 18:57:35.962, +42:48:07.23 (284.39984073333335, 42.802009533333326)

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