2026diq | Transient Name Server

RA/DEC (2000)

14:57:49.164 -05:48:51.02

224.4548506 -5.8141724

Type

SN IIn

Redshift

0.169

Discovery Report Classification Report

Related AstroNotes: 2026-92

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2026-02-14 04:27:12.384

TNS AT

Y

Public

Y

Discovery Mag

19.661

Filter

wide-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

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
	23410	2026-03-21 08:25:00	Magellan-Clay / LDSS-3		Yuri Beletsky	Harsh Kumar	FLEET	tns_2026diq_2026-03-21_08-25-00_Magellan-Clay_LDSS-3_FLEET.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

wide-ATLAS

ATLAS-TDO_ATLAS-05

2026-02-14 04:27:12 - 2026-02-14 04:27:12

2461085.68556 - 2461085.68556

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
558888	2026-02-14 04:27:12	2461085.68556	19.661	0.144	19.95	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot

L-GOTO

GOTO-S_GOTO-3

2026-02-11 18:03:09 - 2026-02-17 17:34:38

2461083.25219 - 2461089.232381

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
560182	2026-02-17 17:34:38	2461089.232381	19.87	0.16		ABMag	L-GOTO	GOTO-S_GOTO-3	180
560181	2026-02-11 18:03:09	2461083.25219			19.7	ABMag	L-GOTO	GOTO-S_GOTO-3	135		[Last non detection]

orange-ATLAS

ATLAS-CHL_ATLAS-04

2026-02-12 08:41:41 - 2026-02-12 08:41:41

2461083.86228 - 2461083.86228

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
558887	2026-02-12 08:41:41	2461083.86228			18.97	ABMag	orange-ATLAS	ATLAS-CHL_ATLAS-04	30	Robot	[Last non detection]

BG-q-BlackGem

BG3_BlackGEM-Cam3

2025-05-13 04:51:24 - 2026-03-10 06:34:38

2460808.7023611 - 2461109.7740509

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
563772	2026-03-10 06:34:38	2461109.7740509	19.67	0.13	20.25	ABMag	BG-q-BlackGem	BG3_BlackGEM-Cam3	60	robotic
563771	2025-05-13 04:51:24	2460808.7023611			18.87	ABMag	BG-q-BlackGem	BG3_BlackGEM-Cam3	60	robotic	[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-02-12 12:54:53 - 2026-02-12 12:54:53

2461084.0381134 - 2461084.0381134

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
561567	2026-02-12 12:54:53	2461084.0381134	19.9863	0.172146		ABMag	r-ZTF	P48_ZTF-Cam

g-ZTF

P48_ZTF-Cam

2026-02-05 12:53:57 - 2026-02-25 12:34:08

2461077.0374653 - 2461097.0237037

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
561568	2026-02-25 12:34:08	2461097.0237037	19.625	0.166106		ABMag	g-ZTF	P48_ZTF-Cam
561566	2026-02-05 12:53:57	2461077.0374653			17.608	ABMag	g-ZTF	P48_ZTF-Cam			[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
294067	2026-03-10 09:05:36	BlackGEM_Bot1	H. Tranin, F. Stoppa, D. Pieterse et al.	BlackGEM	BlackGEM	14:57:49.167	-05:48:50.66	2026-03-10 06:34:38.000	19.67	BG-q-BlackGem		PSN		BGEM J145749.17-054850.7	BlackGEM				N
292954	2026-02-25 13:40:22	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	14:57:49.164	-05:48:51.02	2026-02-12 12:54:52.997	19.9863	r-ZTF		PSN		ZTF26aaggjnw	ZTF				N
292280	2026-02-22 15:07:36	GOTO_bot	G. Ramsay, D. O'Neill, K. Ackley et al.	GOTO	GOTO	14:57:49.137	-05:48:51.03	2026-02-17 17:34:37.632	19.87	L-GOTO		Other		GOTO26bdm	GOTO				N
291537	2026-02-16 10:30:15	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	14:57:49.153	-05:48:50.12	2026-02-14 04:27:12.384	19.661	wide-ATLAS		PSN		ATLAS26bwu	ATLAS			2026TNSTR.654....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

23408

2026-03-31 20:46:09

Peter Blanchard

Peter Blanchard (Harvard/CfA), Harsh Kumar (Harvard/CfA), Edo Berger (Harvard/CfA), Sebastian Gomez (UT Austin), Daichi Hiramatsu (Univ. of Florida)

FLEET

SN IIn

0.169

1

FLEET

2026TNSCR1380....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
23410	2026-03-21 08:25:00	Magellan-Clay / LDSS-3		Yuri Beletsky	Harsh Kumar	FLEET	tns_2026diq_2026-03-21_08-25-00_Magellan-Clay_LDSS-3_FLEET.txt		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 292954 of Group ZTF
Previous RA, DEC: 14:57:49.153, -05:48:50.12 (224.454803333, -5.81392333333)
Updated RA, DEC: 14:57:49.164, -05:48:51.02 (224.4548506, -5.8141724)

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