RA/DEC (2000)
13:26:06.249 -42:58:32.49
201.526038 -42.975692
Type
NA/Unknown
Redshift
0.0018
Discovery ReportClassification Report
Related AstroNotes: 2025-78
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-03-04 02:09:38.592
TNS AT
Y
Public
Y
Discovery Mag
19.355
Filter
cyan-ATLAS
Reporter/s
J. Tonry, L. Denneau, H. Weiland, R. Siverd (IfA, University of Hawaii), N. Erasmus, W. Koorts (South African Astronomical Observatory), A. Jordan, V. Suc (UAI, Obstech), 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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa (Oxford), L. Rhodes (TSI/McGill), A. Rest (STScI), T.-W. Chen (NCU), C. Stubbs (Harvard), J. S. Sommer (LMU), B. P. Schmidt (ANU)
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌AT_2025dhz - 2025-03-05 02:49:48 SOAR / Goodman (None)z=
▌Show H at z=vexp= km/s
▌Show He at z=vexp= km/s
▌Show He II at z=vexp= km/s
▌Show C II at z=vexp= km/s
▌Show C III at z=vexp= km/s
▌Show C IV at z=vexp= km/s
▌Show N II at z=vexp= km/s
▌Show N III at z=vexp= km/s
▌Show N IV at z=vexp= km/s
▌Show N V at z=vexp= km/s
▌Show O at z=vexp= km/s
▌Show [O I] at z=vexp= km/s
▌Show O II at z=vexp= km/s
▌Show [O II] at z=vexp= km/s
▌Show [O III] at z=vexp= km/s
▌Show O V at z=vexp= km/s
▌Show O VI at z=vexp= km/s
▌Show Na at z=vexp= km/s
▌Show Mg at z=vexp= km/s
▌Show Mg II at z=vexp= km/s
▌Show Si II at z=vexp= km/s
▌Show S II at z=vexp= km/s
▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe II at z=vexp= km/s
▌Show Fe III at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Å at z=vexp= km/s
▌Show Tellurics 
▌Show Galaxy lines at z=
▌Show WR-WN at z=vexp= km/s
▌Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌ATLAS-CHL_ATLAS-04_orange
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
   
Pointer position (MJD, Mag, Abs.Mag): (0.00, 0.00, 0.00)
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
20531 2025-03-05 02:49:48 SOAR / Goodman 960 R. Cartier R. Cartier None tns_2025dhz_2025-03-05_02-49-48_SOAR_Goodman_None.txt Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-03-02 04:53:27 - 2025-03-02 04:53:27 2460736.70378 - 2460736.70378 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
473361 2025-03-02 04:53:27 2460736.70378 19.33 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-03-04 02:09:39 - 2025-03-04 02:09:39 2460738.59003 - 2460738.59003 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
473362 2025-03-04 02:09:39 2460738.59003 19.355 0.203 19.59 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-03-02 08:54:40 - 2025-03-02 08:54:40 2460736.8712963 - 2460736.8712963 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
473363 2025-03-02 08:54:40 2460736.8712963 21.05 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-03-03 08:20:29 - 2025-03-03 08:20:29 2460737.8475579 - 2460737.8475579 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
473364 2025-03-03 08:20:29 2460737.8475579 20.09 0.12 21.25 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
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
246694 2025-03-04 12:31:03 BlackGEM_Bot1 F. Stoppa,H. Tranin,D. Pieterse et al. BlackGEM BlackGEM 13:26:06.249 -42:58:32.49 2025-03-03 08:20:29.000 20.09 BG-q-BlackGem 1 PSN BGEM J132606.24-425832.4 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025dhz_atrep_246694_BlackGEM.pdf Finding Chart 2025-03-04 12:31:05 BlackGEM_Bot1
246693 2025-03-04 12:30:03 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 13:26:06.268 -42:58:32.58 2025-03-04 02:09:38.592 19.355 cyan-ATLAS PSN ATLAS25cji ATLAS 2025TNSTR.880....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
20531 2025-03-06 01:45:48 Regis Cartier R. Cartier (U. de Antofagasta), J.L. Prieto, E. Hueichapan (UDP), J. Schulte (MSU) and J. Espinoza (SOAR) None NA/Unknown 0.0018 1 We obtained two optical spectra of AT 2025dhz on the outskirts of NGC 5128 (Centaurus A) during the night of March 4, 2025 with Goodman at SOAR telescope. The spectra are noisy, but they show broad hydrogen lines with a FWHM of 2000-3000 km/s. AT 2025dhz seems to be consistent with a CV in Centaurus A as reported in the AstroNote 2025-78. Follow-up observations are encouraged. 2025TNSCR.905....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
20531 2025-03-05 02:49:48 SOAR / Goodman 960 R. Cartier R. Cartier None tns_2025dhz_2025-03-05_02-49-48_SOAR_Goodman_None.txt Object

Comments

TNS
System

Tue, 03/04/2025 - 12:31

Object coordinates updated

Object coordinates updated according to AT-report 246694 of Group BlackGEM
Previous RA, DEC: 13:26:06.268, -42:58:32.58 (201.526115, -42.9757175)
Updated RA, DEC: 13:26:06.249, -42:58:32.49 (201.526038, -42.975692)