RA/DEC (2000)
12:12:07.397 +23:57:29.29
183.030820624 +23.9581365096
Type
SN Ia
Redshift
0.064
Discovery ReportClassification Report
Related AstroNotes: 2025-101
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-03-01 10:57:01.728
TNS AT
Y
Public
Y
Discovery Mag
19.058
Filter
orange-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

 ▌SN_2025dcd - 2025-03-26 22:16:02 NOT / ALFOSC (BlackGEM)z=
 ▌SN_2025dcd - 2025-03-21 00:00:00 LT / SPRAT (ATLAS)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

 ▌GOTO-N_GOTO-2_L
 ▌PS2_GPC2_w
 ▌GOTO-N_GOTO-1_L
 ▌BG3_BlackGEM-Cam3_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌ATLAS-MLO_ATLAS-01_orange
 ▌ATLAS-HKO_ATLAS-02_orange
   
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
20653 2025-03-26 22:16:02 NOT / ALFOSC 600 David Jones Gerard Garcia Moreno BlackGEM tns_2025dcd_2025-03-26_22-16-02_NOT_ALFOSC_BlackGEM.txt Object
20650 2025-03-21 00:00:00 LT / SPRAT LT C. Angus ATLAS tns_2025dcd_2025-03-21_LT_SPRAT_ATLAS.dat Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-02-26 22:35:54 - 2025-02-26 22:35:54 2460733.441597 - 2460733.441597 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
477297 2025-02-26 22:35:54 2460733.441597 19.6 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
w-P1 PS2_GPC2 2025-04-26 10:09:49 - 2025-04-26 10:09:49 2460791.92348 - 2460791.92348 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
495315 2025-04-26 10:09:49 2460791.92348 20.68 0.1 22 ABMag w-P1 PS2_GPC2 45 Robot
L-GOTO GOTO-N_GOTO-1 2025-03-10 22:49:54 - 2025-03-10 22:49:54 2460745.45132 - 2460745.45132 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
477298 2025-03-10 22:49:54 2460745.45132 18.45 0.17 ABMag L-GOTO GOTO-N_GOTO-1 180
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-02-18 06:18:21 - 2025-02-18 06:18:21 2460724.7627431 - 2460724.7627431 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
476626 2025-02-18 06:18:21 2460724.7627431 19.79 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2025-03-04 04:17:56 - 2025-03-04 04:17:56 2460738.6791204 - 2460738.6791204 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
476627 2025-03-04 04:17:56 2460738.6791204 19.28 0.16 20.68 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
orange-ATLAS ATLAS-MLO_ATLAS-01 2025-03-01 10:57:02 - 2025-03-01 10:57:02 2460735.95627 - 2460735.95627 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
472976 2025-03-01 10:57:02 2460735.95627 19.058 0.162 19.52 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
orange-ATLAS ATLAS-HKO_ATLAS-02 2025-02-28 11:09:44 - 2025-02-28 11:09:44 2460734.96509 - 2460734.96509 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
472975 2025-02-28 11:09:44 2460734.96509 19.64 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
258650 2025-06-15 13:36:55 PS1_Bot1 K. C. Chambers,T. de Boer,J. Fairlamb et al. Pan-STARRS Pan-STARRS 12:12:07.397 +23:57:29.29 2025-04-26 10:09:48.672 20.68 w-P1 PSN PS25dll Pan-STARRS N
249092 2025-03-21 05:43:09 GOTO_bot G. Ramsay,K. Ackley,M. Dyer et al. GOTO GOTO 12:12:07.420 +23:57:29.76 2025-03-10 22:49:54.048 18.45 L-GOTO Other GOTO25ben GOTO N
248722 2025-03-18 08:16:03 BlackGEM_Bot1 F. Stoppa,H. Tranin,D. Pieterse et al. BlackGEM BlackGEM 12:12:07.397 +23:57:28.82 2025-03-04 04:17:56.000 19.28 BG-q-BlackGem 1 PSN BGEM J121207.39+235728.8 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025dcd_atrep_248722_BlackGEM.pdf Finding Chart 2025-03-18 08:16:05 BlackGEM_Bot1
246444 2025-03-01 17:31:59 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 12:12:07.382 +23:57:29.36 2025-03-01 10:57:01.728 19.058 orange-ATLAS PSN ATLAS25cgr ATLAS 2025TNSTR.844....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
20653 2025-03-27 22:19:03 Nadejda Blagorodnova Mujortova Nadejda Blagorodnova (ICCUB), David Jones (IAC), Gerard García Moreno (ICCUB), Erez A. Zimmerman (WIS), Moses Mlangeni (UCT/SAAO), Marco A. Gómez-Muñoz (ICCUB), Hugo Tranin (ICCUB) BlackGEM SN Ia 0.064 1 BlackGEM, CET-3PO 2025TNSCR1185....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
20653 2025-03-26 22:16:02 NOT / ALFOSC 600 David Jones Gerard Garcia Moreno BlackGEM tns_2025dcd_2025-03-26_22-16-02_NOT_ALFOSC_BlackGEM.txt Object
20650 2025-03-27 16:50:50 Charlotte Angus Charlotte Angus ATLAS SN Ia 0.064 1 ATLAS 2025TNSCR1184....1A
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
20650 2025-03-21 00:00:00 LT / SPRAT LT C. Angus ATLAS tns_2025dcd_2025-03-21_LT_SPRAT_ATLAS.dat Object

Comments

TNS
System

Sun, 06/15/2025 - 13:36

Object coordinates updated

Object coordinates updated according to AT-report 258650 of Group Pan-STARRS
Previous RA, DEC: 12:12:07.397, +23:57:28.82 (183.030821, +23.958006)
Updated RA, DEC: 12:12:07.397, +23:57:29.29 (183.030820624, +23.9581365096)

TNS
System

Tue, 03/18/2025 - 08:16

Object coordinates updated

Object coordinates updated according to AT-report 248722 of Group BlackGEM
Previous RA, DEC: 12:12:07.382, +23:57:29.36 (183.03076, +23.958155)
Updated RA, DEC: 12:12:07.397, +23:57:28.82 (183.030821, 23.958006)