2026dnd | Transient Name Server

RA/DEC (2000)

14:47:44.376 -09:12:22.01

221.9349012 -9.2061142

Type

SN Ia

Redshift

0.093

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2026-02-17 13:57:17.280

TNS AT

Public

Discovery Mag

19.126

Filter

cyan-ATLAS

Reporter/s

J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), M. R. Alarcón, J. Licandro, P. Nichita (IAC), S. J. Smartt, K. W. Smith (Oxford/QUB), D. R. Young, M. Nicholl, M. Fulton, M. McCollum, T. Moore, J. Weston, X. Sheng, C. R. Angus, A. Wilson, A. Aamer, D. Magill, P. J. Broda, A. J. Smith (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle, L. Eastman (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)

NED SIMBAD DECaLS PanSTARRS-1 SkyMapper VizieR WISE DSS ADS

Light curves

▌

ATLAS-STH_ATLAS-03_cyan

▌

P48_ZTF-Cam_r

▌

ATLAS-MLO_ATLAS-01_cyan

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
	23134	2026-02-27 00:00:00	VLT-UT1 / FORS2		VLT Staff	C.Angus	OxQUB	tns_2026dnd_2026-02-27_VLT-UT1_FORS2_OxQUB.txt		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-STH_ATLAS-03

2026-02-16 03:15:30 - 2026-02-16 03:15:30

2461087.63576 - 2461087.63576

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
559250	2026-02-16 03:15:30	2461087.63576			18.99	ABMag	cyan-ATLAS	ATLAS-STH_ATLAS-03	30	Robot	[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-02-07 12:32:25 - 2026-02-25 11:32:29

2461079.0225116 - 2461096.9808912

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Remarks
561493	2026-02-25 11:32:29	2461096.9808912	18.7695	0.0782002		ABMag	r-ZTF	P48_ZTF-Cam
561492	2026-02-14 12:00:14	2461086.000162	20.36	0.137301		ABMag	r-ZTF	P48_ZTF-Cam
561491	2026-02-07 12:32:25	2461079.0225116			19.9979	ABMag	r-ZTF	P48_ZTF-Cam	[Last non detection]

cyan-ATLAS

ATLAS-MLO_ATLAS-01

2026-02-17 13:57:17 - 2026-02-17 13:57:17

2461089.08145 - 2461089.08145

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
559251	2026-02-17 13:57:17	2461089.08145	19.126	0.152	19.54	ABMag	cyan-ATLAS	ATLAS-MLO_ATLAS-01	30	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
292920	2026-02-25 11:54:59	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	14:47:44.376	-09:12:22.01	2026-02-14 12:00:13.996	20.36	r-ZTF		PSN		ZTF26aahkoht	ZTF				N
291753	2026-02-18 10:21:24	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	14:47:44.378	-09:12:21.93	2026-02-17 13:57:17.280	19.126	cyan-ATLAS		PSN		ATLAS26bzs	ATLAS			2026TNSTR.693....1T	N

Classification Reports

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23133

2026-03-04 18:33:59

Charlotte Angus

C. Angus (QUB), S. Srivastav (Oxford)

OxQUB

SN Ia

0.093

OxQUB

Spectrum taken with VLT/FORS2 on 27/02/2026. Template matches to SNe Ia around maximum light, narrow host absorption gives redshift z=0.093. Classification was done using SNID.

2026TNSCR.915....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
23134	2026-02-27 00:00:00	VLT-UT1 / FORS2		VLT Staff	C.Angus	OxQUB	tns_2026dnd_2026-02-27_VLT-UT1_FORS2_OxQUB.txt		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 292920 of Group ZTF
Previous RA, DEC: 14:47:44.378, -09:12:21.93 (221.93491, -9.20609142857)
Updated RA, DEC: 14:47:44.376, -09:12:22.01 (221.9349012, -9.2061142)

SN 2026dnd

Spectra

Light curves

Comments

Object coordinates updated