2025ahoe | Transient Name Server

RA/DEC (2000)

13:33:25.690 -33:56:10.58

203.357042 -33.936272

Type

SN Ia

Redshift

0.046

Discovery Report Classification Report

Reporting Group

ATLAS

Discovering Data Source

ATLAS

Discovery Date

2025-12-16 01:41:19.104

TNS AT

Y

Public

Y

Discovery Mag

18.552

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

▌

BG3_BlackGEM-Cam3_BG-q

▌

BG2_BlackGEM-Cam2_BG-q

▌

ATLAS-HKO_ATLAS-02_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
	22743	2026-01-08 00:00:00	SOAR / Goodman		Jonathan Carney (UNC), Igor Andreoni (UNC)	Jonathan Carney (UNC)	None	tns_2025ahoe_2026-01-08_00-00-00_SOAR_Goodman_None.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

cyan-ATLAS

ATLAS-STH_ATLAS-03

2025-12-16 01:41:19 - 2025-12-16 01:41:19

2461025.57036 - 2461025.57036

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540617	2025-12-16 01:41:19	2461025.57036	18.552	0.158	19.12	ABMag	cyan-ATLAS	ATLAS-STH_ATLAS-03	30	Robot

BG-q-BlackGem

BG3_BlackGEM-Cam3

2025-12-31 08:30:00 - 2025-12-31 08:30:00

2461040.8541667 - 2461040.8541667

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
546565	2025-12-31 08:30:00	2461040.8541667			20.49	ABMag	BG-q-BlackGem	BG3_BlackGEM-Cam3	60	robotic	[Last non detection]

BG-q-BlackGem

BG2_BlackGEM-Cam2

2026-01-01 08:10:00 - 2026-01-01 08:10:00

2461041.8402778 - 2461041.8402778

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
546566	2026-01-01 08:10:00	2461041.8402778	17.95	0.06	20.52	ABMag	BG-q-BlackGem	BG2_BlackGEM-Cam2	60	robotic

orange-ATLAS

ATLAS-HKO_ATLAS-02

2025-12-14 15:51:32 - 2025-12-14 15:51:32

2461024.16079 - 2461024.16079

1

Photometry

ID	Obs-date	JD	Mag. / Flux	Err	Lim. Mag./Flux	Units	Filter	Tel / Inst	Exp-time	Observer/s	Remarks
540616	2025-12-14 15:51:32	2461024.16079			18.11	ABMag	orange-ATLAS	ATLAS-HKO_ATLAS-02	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
285255	2026-01-01 12:01:02	BlackGEM_Bot1	S. Faris,H. Tranin,F. Stoppa et al.	BlackGEM	BlackGEM	13:33:25.690	-33:56:10.58	2026-01-01 08:10:00.000	17.95	BG-q-BlackGem		PSN		BGEM J133325.69-335610.6	BlackGEM				N
281404	2025-12-19 09:36:12	ATLAS_Bot1	J. Tonry,L. Denneau,H. Weiland (IfA et al.	ATLAS	ATLAS	13:33:25.804	-33:56:10.24	2025-12-16 01:41:19.104	18.552	cyan-ATLAS		PSN		ATLAS25pxz	ATLAS			2025TNSTR5057....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

22742

2026-01-08 16:39:29

Jonathan Carney

Jonathan Carney (UNC), Iair Arcavi (Tel Aviv), Igor Andreoni (UNC)

None

SN Ia

0.046

1

Classification and redshift from SNID.

2026TNSCR..68....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
22743	2026-01-08 00:00:00	SOAR / Goodman		Jonathan Carney (UNC), Igor Andreoni (UNC)	Jonathan Carney (UNC)	None	tns_2025ahoe_2026-01-08_00-00-00_SOAR_Goodman_None.ascii		Object

Comments

Object coordinates updated

Object coordinates updated according to AT-report 285255 of Group BlackGEM
Previous RA, DEC: 13:33:25.804, -33:56:10.24 (203.357515, -33.9361766667)
Updated RA, DEC: 13:33:25.690, -33:56:10.58 (203.357042, -33.936272)

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