RA/DEC (2000)
14:20:25.604 -28:38:48.90
215.106683 -28.646917
Type
SN Ia
Redshift
0.065
Discovery ReportClassification Report
Related AstroNotes: 2025-228
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-07-10 01:35:19.680
TNS AT
Y
Public
Y
Discovery Mag
18.376
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), 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 (QUB), P. Ramsden (Birmingham/QUB), L. Shingles (GSI/QUB), S. Srivastav, J. H. Gillanders, H. Stevance, A. J. Cooper, F. Stoppa, J. Tweddle (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_2025rdc - 2025-07-24 02:27:05 ESO-NTT / EFOSC2-NTT (ePESSTO+)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-S_GOTO-4_L
 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG3_BlackGEM-Cam3_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
21620 2025-07-24 02:27:05 ESO-NTT / EFOSC2-NTT 800 G. Martins, R. Santos S. González-Gaitán, J. Duarte ePESSTO+ tns_2025rdc_2025-07-24_02-27-05_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025rdc_2025-07-24_02-27-05_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-06-21 14:08:31 - 2025-06-21 14:08:31 2460848.089249 - 2460848.089249 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505424 2025-06-21 14:08:31 2460848.089249 19.9 ABMag L-GOTO GOTO-S_GOTO-4 180 [Last non detection]
L-GOTO GOTO-S_GOTO-3 2025-07-04 11:03:17 - 2025-07-04 11:03:17 2460860.960605 - 2460860.960605 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
505425 2025-07-04 11:03:17 2460860.960605 19.02 0.2 ABMag L-GOTO GOTO-S_GOTO-3 360
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-07-09 02:59:58 - 2025-07-10 01:35:20 2460865.62498 - 2460866.5662 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
502630 2025-07-10 01:35:20 2460866.5662 18.376 0.182 18.46 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
502629 2025-07-09 02:59:58 2460865.62498 18.33 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-06-10 01:02:50 - 2025-06-10 01:02:50 2460836.5436343 - 2460836.5436343 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
585742 2025-06-10 01:02:50 2460836.5436343 19.15 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG3_BlackGEM-Cam3 2025-07-08 00:33:21 - 2025-07-08 00:33:21 2460864.5231597 - 2460864.5231597 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
585743 2025-07-08 00:33:21 2460864.5231597 18.46 0.12 18.95 ABMag BG-q-BlackGem BG3_BlackGEM-Cam3 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
305435 2026-05-27 13:56:25 BlackGEM_Bot1 H. Tranin, F. Stoppa, D. Pieterse et al. BlackGEM BlackGEM 14:20:25.604 -28:38:48.90 2025-07-08 00:33:21.000 18.46 BG-q-BlackGem PSN BGEM J142025.60-283848.9 BlackGEM N
263974 2025-07-27 09:18:58 GOTO_bot A. Kumar, D. O'Neill, K. Ackley et al. GOTO GOTO 14:20:25.584 -28:38:49.12 2025-07-04 11:03:16.704 19.02 L-GOTO Other GOTO25flk GOTO N
262541 2025-07-14 22:49:26 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 14:20:25.625 -28:38:48.60 2025-07-10 01:35:19.680 18.376 orange-ATLAS PSN ATLAS25hpm ATLAS 2025TNSTR2685....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
21620 2025-07-24 19:15:51 ePESSTOplus_Bot1 G. Martins, R. Santos, S. González-Gaitán, J. Duarte, O. Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.065 1 ePESSTO+ 2025TNSCR2879....1M
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
21620 2025-07-24 02:27:05 ESO-NTT / EFOSC2-NTT 800 G. Martins, R. Santos S. González-Gaitán, J. Duarte ePESSTO+ tns_2025rdc_2025-07-24_02-27-05_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025rdc_2025-07-24_02-27-05_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Wed, 05/27/2026 - 13:56

Object coordinates updated

Object coordinates updated according to AT-report 305435 of Group BlackGEM
Previous RA, DEC: 14:20:25.625, -28:38:48.60 (215.106772857, -28.6468342857)
Updated RA, DEC: 14:20:25.604, -28:38:48.90 (215.106683, -28.646917)