2026atw | Transient Name Server

RA/DEC (2000)

17:29:00.080 +56:46:48.28

262.250333 +56.780078

Type

SN IIP

Redshift

0.027

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2026-01-19 15:23:24.000

TNS AT

Y

Public

Y

Discovery Mag

18.22

Filter

orange-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

▌

WFST_WFST-WFC_g

▌

LAST_LAST-Cam_Clear

▌

GOTO-N_GOTO-2_L

▌

ATLAS-MLO_ATLAS-01_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
	23537	2026-03-17 11:35:40	FLWO-1.5m / FAST		Ben Arthurs, Ian Loyd	Solidea Ficco	VHU-TDA	tns_2026atw_2026-03-17_11-35-40_FLWO-1.5m_FAST_VHU-TDA.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

g-WFST

WFST_WFST-WFC

2026-03-27 20:58:34 - 2026-03-27 20:58:34

2461127.374 - 2461127.374

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
572834	2026-03-27 20:58:34	2461127.374	19.69	0.02		ABMag	g-WFST	WFST_WFST-WFC	30

Clear-

LAST_LAST-Cam

2024-07-02 21:16:49 - 2026-02-25 01:40:57

2460494.38668 - 2461096.5701

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
561426	2026-02-25 01:40:57	2461096.5701	18.85			ABMag	Clear-	LAST_LAST-Cam	400
561425	2024-07-02 21:16:49	2460494.38668			21.83	ABMag	Clear-	LAST_LAST-Cam	6320		[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2025-10-01 21:41:34 - 2026-03-07 06:00:41

2460950.403862 - 2461106.750466

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
563219	2026-03-07 06:00:41	2461106.750466	18.56	0.1		ABMag	L-GOTO	GOTO-N_GOTO-2	180
563218	2025-10-01 21:41:34	2460950.403862			19.7	ABMag	L-GOTO	GOTO-N_GOTO-2	180		[Last non detection]

orange-ATLAS

ATLAS-MLO_ATLAS-01

2026-01-01 15:57:39 - 2026-01-19 15:23:24

2461042.16503 - 2461060.14125

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
552050	2026-01-19 15:23:24	2461060.14125	18.22	0.099	19.35	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	30	Robot
552049	2026-01-01 15:57:39	2461042.16503			18.77	ABMag	orange-ATLAS	ATLAS-MLO_ATLAS-01	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
298871	2026-04-06 13:43:37	WFST_SN	Zelin Xu, Dezheng Meng, Ji-an Jiang et al.	WFST	WFST	17:29:00.080	+56:46:48.28	2026-03-27 20:58:33.600	19.69	g-WFST		PSN		WFST260327bwdiy	WFST				N
293811	2026-03-07 09:58:53	GOTO_bot	G. Ramsay, T. Killestein, K. Ackley et al.	GOTO	GOTO	17:29:00.078	+56:46:48.25	2026-03-07 06:00:40.608	18.56	L-GOTO		Other		GOTO26bqi	GOTO				N
292891	2026-02-25 05:24:53	LAST_Bot1	E. O. Ofek (WIS), R. Konno (WIS), E. A. Zimmerman (WIS) et al.	LAST	LAST	17:29:00.088	+56:46:47.46	2026-02-25 01:40:56.640	18.85	Clear-		PSN			LAST				N
288047	2026-01-20 10:30:38	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	17:29:00.082	+56:46:48.11	2026-01-19 15:23:24.000	18.22	orange-ATLAS		PSN		ATLAS26axm	ATLAS			2026TNSTR.243....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

23534

2026-04-22 19:51:10

Ashley Villar

Solidea Ficco (Harvard), Ben Arthurs (Harvard), Ian Loyd (Harvard), Ashley Villar (Harvard)

VHU-TDA

SN IIP

0.027

1

VHU-TDA

Classified as part of undergraduate course Astronomy 100 via SNID-SAGE (Stoppa & Smartt 2026).

2026TNSCR1775....1F

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
23537	2026-03-17 11:35:40	FLWO-1.5m / FAST		Ben Arthurs, Ian Loyd	Solidea Ficco	VHU-TDA	tns_2026atw_2026-03-17_11-35-40_FLWO-1.5m_FAST_VHU-TDA.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 298871 of Group WFST
Previous RA, DEC: 17:29:00.082, +56:46:48.11 (262.250343333, +56.78003)
Updated RA, DEC: 17:29:00.080, +56:46:48.28 (262.250333, +56.780078)

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