2026bss | Transient Name Server

RA/DEC (2000)

01:42:04.845 +42:56:46.68

25.5201892 +42.9462989

Type

SN Ia

Redshift

0.024867

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2026-01-29 07:39:38.880

TNS AT

Y

Public

Y

Discovery Mag

18.232

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

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
	22895	2026-02-01 04:05:26	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2026bss_2026-02-01_04-05-26.393187_P60_SEDM_ZTF_0.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
	22892	2026-02-01 04:05:26	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2026bss_2026-02-01_04-05-26.393187_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

Light Curves

Filter

Tel / Inst

Obs-date range

JD Range

Photometry

wide-ATLAS

ATLAS-TDO_ATLAS-05

2026-01-25 21:04:16 - 2026-01-25 21:04:16

2461066.37796 - 2461066.37796

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
554738	2026-01-25 21:04:16	2461066.37796			19.08	ABMag	wide-ATLAS	ATLAS-TDO_ATLAS-05	30	Robot	[Last non detection]

L-GOTO

GOTO-N_GOTO-2

2026-01-27 19:57:43 - 2026-01-27 19:57:43

2461068.331753 - 2461068.331753

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
555147	2026-01-27 19:57:43	2461068.331753	18.96	0.16		ABMag	L-GOTO	GOTO-N_GOTO-2	180

L-GOTO

GOTO-N_GOTO-1

2026-01-20 20:07:29 - 2026-01-20 20:07:29

2461061.338525 - 2461061.338525

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
555146	2026-01-20 20:07:29	2461061.338525			20.6	ABMag	L-GOTO	GOTO-N_GOTO-1	360		[Last non detection]

r-ZTF

P48_ZTF-Cam

2026-01-26 06:25:26 - 2026-01-26 06:25:26

2461066.767662 - 2461066.767662

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
554954	2026-01-26 06:25:26	2461066.767662			17.418	ABMag	r-ZTF	P48_ZTF-Cam			[Last non detection]

g-ZTF

P48_ZTF-Cam

2026-01-27 02:46:20 - 2026-01-31 02:53:22

2461067.6155093 - 2461071.6203935

2

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
554956	2026-01-31 02:53:22	2461071.6203935	17.7152	0.0850166		ABMag	g-ZTF	P48_ZTF-Cam
554955	2026-01-27 02:46:20	2461067.6155093	19.1277	0.0774328		ABMag	g-ZTF	P48_ZTF-Cam

orange-ATLAS

ATLAS-HKO_ATLAS-02

2026-01-29 07:39:39 - 2026-01-29 07:39:39

2461069.8192 - 2461069.8192

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
554739	2026-01-29 07:39:39	2461069.8192	18.232	0.136	18.55	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	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
289624	2026-01-31 21:00:03	GOTO_bot	D. O'Neill, K. Ackley, M. Dyer et al.	GOTO	GOTO	01:42:04.838	+42:56:46.99	2026-01-27 19:57:43.200	18.96	L-GOTO		Other		GOTO26ahd	GOTO				N
289532	2026-01-31 03:07:29	BTSbot_bot	Nabeel Rehemtulla (CIERA, NU), Wynn Jacobson-Galán (Caltech), Theophile du Laz (Caltech) on behalf of ZTF	ZTF	ZTF	01:42:04.845	+42:56:46.68	2026-01-27 02:46:20.003	19.1277	g-ZTF		PSN		ZTF26aaegaze	ZTF		Bright (m_peak <= 18.5) transient candidate identified autonomously by BTSbot (Rehemtulla et al. 2024; arXiv:2401.15167).		N
289395	2026-01-30 11:56:26	ATLAS_Bot1	J. Tonry, L. Denneau, H. Weiland (IfA, University of Hawaii) et al.	ATLAS	ATLAS	01:42:04.832	+42:56:46.97	2026-01-29 07:39:38.880	18.232	orange-ATLAS		PSN		ATLAS26bfu	ATLAS			2026TNSTR.397....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

22894

2026-02-01 19:47:18

ZTF_Bot1

S. Covarrubias, M. Chu, C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF)

ZTF

SN Ia

0.024867

1

ZTF

2026TNSCR.436....1C

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
22895	2026-02-01 04:05:26	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2026bss_2026-02-01_04-05-26.393187_P60_SEDM_ZTF_0.ascii		Object

22891

2026-02-01 04:49:23

ZTF_Bot1

C. Fremling, D. Neill, Y. Sharma on behalf of the SEDM Team (Caltech) and the Zwicky Transient Facility (ZTF) based on SNIascore

ZTF

SN Ia

0.021

1

ZTF

2026TNSCR.433....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
22892	2026-02-01 04:05:26	P60 / SEDM	2160	SEDmRobot	auto	ZTF	tns_2026bss_2026-02-01_04-05-26.393187_P60_SEDM_ZTF.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 289532 of Group ZTF
Previous RA, DEC: 01:42:04.832, +42:56:46.97 (25.520135, +42.94638)
Updated RA, DEC: 01:42:04.845, +42:56:46.68 (25.5201892, +42.9462989)

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