2026kjm | Transient Name Server

RA/DEC (2000)

12:24:35.400 +07:43:41.00

186.14750038889 +7.7280566333333

Type

SN Ia

Redshift

0.073

Discovery Report Classification Report

Related AstroNotes: 2026-123

Reporting Group

ZTF

Discovering Data Source

ZTF

Discovery Date

2026-04-18 07:54:39.003

TNS AT

Y

Public

Y

Discovery Mag

20.5338

Filter

g-ZTF

Reporter/s

Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU), Theophile du Laz (Caltech) on behalf of ZTF

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
	23654	2026-05-07 06:11:43	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2026kjm_2026-05-07_06-11-42.936579_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
	23637	2026-05-05 04:13:17	ESO-NTT / EFOSC2-NTT	900	Jasvinderjit Khaulsay, Camila Cárdenas	Aiswarya Sankar.K, Anirban Dutta, Yu-Hsing Lee, Amar Aryan, Yi-Zhi Hong, You-Hao Chen	ePESSTO+	tns_2026kjm_2026-05-05_04-13-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci	tns_2026kjm_2026-05-05_04-13-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits	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

2026-04-21 00:39:04 - 2026-04-22 00:17:30

2461151.52713 - 2461152.51215

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
577431	2026-04-22 00:17:30	2461152.51215	19.159	0.079	20.06	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot
577430	2026-04-21 00:39:04	2461151.52713			20.2	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot	[Last non detection]

Clear-

LAST_LAST-Cam

2024-03-04 23:23:04 - 2026-05-11 20:13:55

2460374.47435 - 2461172.343

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
581805	2026-05-11 20:13:55	2461172.343	19.45			ABMag	Clear-	LAST_LAST-Cam	400
581804	2024-03-04 23:23:04	2460374.47435			21.56	ABMag	Clear-	LAST_LAST-Cam	5200		[Last non detection]

L-GOTO

GOTO-N_GOTO-1

2026-04-12 22:53:07 - 2026-04-13 22:52:56

2461143.453549 - 2461144.453429

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
577435	2026-04-13 22:52:56	2461144.453429	20.42	0.21		ABMag	L-GOTO	GOTO-N_GOTO-1	180
577434	2026-04-12 22:53:07	2461143.453549			20.3	ABMag	L-GOTO	GOTO-N_GOTO-1	180		[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-04-18 06:51:58 - 2026-04-23 06:07:32

2461148.786088 - 2461153.7552315

4

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
577084	2026-04-23 06:07:32	2461153.7552315	19.3666	0.138935		ABMag	r-ZTF	P48_ZTF-Cam
580168	2026-04-20 06:44:06	2461150.780625	19.8646	0.188154	20.2811	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	Data provided by ZTF, classified by Fink
577082	2026-04-18 06:51:58	2461148.786088			20.241	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]
580167	2026-04-18 06:51:58	2461148.786088			20.241	ABMag	r-ZTF	P48_ZTF-Cam	30	Robot	[Last non detection] Data provided by ZTF, classified by Fink

g-ZTF

P48_ZTF-Cam

2026-04-18 07:54:39 - 2026-04-18 07:54:39

2461148.8296181 - 2461148.8296181

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
577083	2026-04-18 07:54:39	2461148.8296181	20.5338	0.184178		ABMag	g-ZTF	P48_ZTF-Cam

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
303378	2026-05-12 12:50:43	LAST_Bot1	R. Konno (WIS), E. A. Zimmerman (WIS), A. Horowicz (WIS) et al.	LAST	LAST	12:24:35.394	+07:43:40.10	2026-05-11 20:13:55.200	19.45	Clear-		PSN			LAST				N
302606	2026-05-07 18:45:58	Fink	Julien Peloton, Anais Moller, Emille E. O. Ishida on behalf of the Fink broker	Fink	ZTF	12:24:35.400	+07:43:41.00	2026-04-20 06:44:06.000	19.8646	r-ZTF		PSN		ZTF26aatktdb	ZTF		Early SN Ia candidate classified by Fink using the public ZTF stream. Object data at https://fink-portal.org/ZTF26aatktdb		N
301219	2026-04-23 22:36:50	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	12:24:35.379	+07:43:40.93	2026-04-13 22:52:56.352	20.42	L-GOTO		Other		GOTO26drr	GOTO				N
301217	2026-04-23 22:22:01	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	12:24:35.393	+07:43:41.05	2026-04-22 00:17:29.760	19.159	wide-ATLAS		PSN		ATLAS26ert	ATLAS				N
301052	2026-04-23 07:01:48	Fritz	Jesper Sollerman (SU), Christoffer Fremling (Caltech), Daniel Perley (LJMU) et al.	ZTF	ZTF	12:24:35.399	+07:43:41.01	2026-04-18 07:54:39.003	20.5338	g-ZTF		PSN		ZTF26aatktdb	ZTF			2026TNSTR1787....1S	N

Classification Reports

ID

Time received (UT)

Sender

Classifier/s

Group

Classification

Redshift

Spectra

Related files

Assoc. Groups

End prop. period

Remarks

ADS Bibcode

23651

2026-05-07 07:11:11

ZTF_Bot1

C. Fremling and J. Purdum on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore

ZTF

SN Ia

0.073

1

ZTF

2026TNSCR1981....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
23654	2026-05-07 06:11:43	P60 / SEDM	2700	SEDmRobot	auto	ZTF	tns_2026kjm_2026-05-07_06-11-42.936579_P60_SEDM_ZTF.ascii		Object

23634

2026-05-05 16:40:50

ePESSTOplus_Bot1

Jasvinderjit Khaulsay, Camila Cárdenas, Aiswarya Sankar.K, Anirban Dutta, Yu-Hsing Lee, Amar Aryan, Yi-Zhi Hong, You-Hao Chen, O. Yaron on behalf of ePESSTO+

ePESSTO+

SN Ia

0.07

1

ePESSTO+

2026TNSCR1949....1K

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
23637	2026-05-05 04:13:17	ESO-NTT / EFOSC2-NTT	900	Jasvinderjit Khaulsay, Camila Cárdenas	Aiswarya Sankar.K, Anirban Dutta, Yu-Hsing Lee, Amar Aryan, Yi-Zhi Hong, You-Hao Chen	ePESSTO+	tns_2026kjm_2026-05-05_04-13-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci	tns_2026kjm_2026-05-05_04-13-17_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits	Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 302606 of Group ZTF
Previous RA, DEC: 12:24:35.399, +07:43:41.01 (186.1474959, +7.7280584)
Updated RA, DEC: 12:24:35.400, +07:43:41.00 (186.14750038889, +7.7280566333333)

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