RA/DEC (2000)
20:40:42.848 -20:26:08.34
310.178533 -20.43565
Type
SN Ia
Redshift
0.02
Discovery ReportClassification Report
Related AstroNotes: 2025-140
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-04-27 02:13:31.008
TNS AT
Y
Public
Y
Discovery Mag
19.264
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, 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_2025imw - 2025-05-03 19:12:00 ANU-2.3m / WiFeS (DEBASS)z=
 ▌SN_2025imw - 2025-05-03 08:55:15 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-N_GOTO-2_L
 ▌ATLAS-STH_ATLAS-03_cyan
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌P48_ZTF-Cam_r
 ▌P48_ZTF-Cam_g
 ▌Other_Other_Other
   
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
20973 2025-05-03 19:12:00 ANU-2.3m / WiFeS 1200 Robotic C. Lidman DEBASS tns_2025imw_2025-05-03.8_ANU-2.3m_WiFeS_DEBASS.dat tns_2025imw_2025-05-03.8_ANU-2.3m_WiFeS_DEBASS.fits Object
20993 2025-05-03 08:55:15 ESO-NTT / EFOSC2-NTT 780 Catalina Casanueva, Bastián Ayala Amit Kumar ePESSTO+ tns_2025imw_2025-05-03_08-55-15_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025imw_2025-05-03_08-55-15_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-04-24 05:15:56 - 2025-04-28 05:00:22 2460789.719402 - 2460793.708591 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484702 2025-04-28 05:00:22 2460793.708591 18.69 0.13 ABMag L-GOTO GOTO-N_GOTO-2 180
484701 2025-04-24 05:15:56 2460789.719402 19.2 ABMag L-GOTO GOTO-N_GOTO-2 180 [Last non detection]
cyan-ATLAS ATLAS-STH_ATLAS-03 2025-04-26 02:34:19 - 2025-04-27 02:13:31 2460791.60716 - 2460792.59272 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484467 2025-04-27 02:13:31 2460792.59272 19.264 0.182 19.37 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot
484466 2025-04-26 02:34:19 2460791.60716 19.4 ABMag cyan-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2025-04-22 08:52:30 - 2025-04-29 07:52:41 2460787.8697917 - 2460794.8282523 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
484726 2025-04-29 07:52:41 2460794.8282523 18.18 0.05 20.22 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
484725 2025-04-22 08:52:30 2460787.8697917 20.19 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
r-ZTF P48_ZTF-Cam 2025-05-15 10:24:16 - 2025-05-15 10:24:16 2460810.9335185 - 2460810.9335185 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488373 2025-05-15 10:24:16 2460810.9335185 16.5268 0.039053 ABMag r-ZTF P48_ZTF-Cam
g-ZTF P48_ZTF-Cam 2025-05-15 11:02:42 - 2025-05-15 11:02:42 2460810.9602083 - 2460810.9602083 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488374 2025-05-15 11:02:42 2460810.9602083 16.4377 0.0407561 ABMag g-ZTF P48_ZTF-Cam
Other- Other_Other 2018-04-20 03:28:33 - 2025-05-12 01:06:58 2458228.64483 - 2460807.5465 3
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
488060 2025-05-12 01:06:58 2460807.5465 16.1 18.3 VegaMag Other- Other_Other 60 Robot MASTER-SAAO
488059 2025-05-12 00:51:03 2460807.53545 16.4 18.3 VegaMag Other- Other_Other 60 Robot MASTER-SAAO
488058 2018-04-20 03:28:33 2458228.64483 19.9 VegaMag Other- Other_Other 180 Robot [Last non detection] MASTER-SAAO
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
255076 2025-05-15 11:43:25 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 20:40:42.864 -20:26:08.31 2025-05-15 10:24:15.998 16.5268 r-ZTF PSN ZTF25aaqhkyi ZTF N
254925 2025-05-12 23:23:58 MASTER Ya.Kechin,V.Lipunov,E.Gorbovskoy et al. MASTER MASTER 20:40:42.890 -20:26:09.10 2025-05-12 00:51:02.880 16.4 Other- PSN MASTER OT J204042.89-202609.1 MASTER N
252971 2025-04-29 13:43:15 BlackGEM_Bot1 F. Stoppa,H. Tranin,D. Pieterse et al. BlackGEM BlackGEM 20:40:42.848 -20:26:08.34 2025-04-29 07:52:41.000 18.18 BG-q-BlackGem 1 PSN BGEM J204042.84-202608.3 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025imw_atrep_252971_BlackGEM.pdf Finding Chart 2025-04-29 13:43:17 BlackGEM_Bot1
252959 2025-04-29 12:48:07 GOTO_bot A. Kumar,D. O'Neill,K. Ackley et al. GOTO GOTO 20:40:42.883 -20:26:07.99 2025-04-28 05:00:22.176 18.69 L-GOTO Other GOTO25cec GOTO N
252815 2025-04-27 20:05:50 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 20:40:42.846 -20:26:08.18 2025-04-27 02:13:31.008 19.264 cyan-ATLAS PSN ATLAS25eib ATLAS 2025TNSTR1548....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
20993 2025-05-08 08:31:58 ePESSTOplus_Bot1 Catalina Casanueva, Bastián Ayala, Amit Kumar, Ofer Yaron on behalf of ePESSTO+ ePESSTO+ SN Ia 0.02 1 Add ePESSTO+ 2025TNSCR1715....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
20993 2025-05-03 08:55:15 ESO-NTT / EFOSC2-NTT 780 Catalina Casanueva, Bastián Ayala Amit Kumar ePESSTO+ tns_2025imw_2025-05-03_08-55-15_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025imw_2025-05-03_08-55-15_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
20973 2025-05-04 06:26:18 Chris Lidman C. Lidman (ANU), D. Brout (Boston University), K. Auchettl (University of Melbourne/UCSC), P. Armstrong (ANU), D. Cao (ANU), B. Martin (ANU), L. Rauf (ANU), B. P. Schmidt (ANU), and B. E. Tucker (ANU) DEBASS SN Ia 0.018 1 DEBASS Classified with superfit. Redshift from SN 2025TNSCR1668....1L
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
20973 2025-05-03 19:12:00 ANU-2.3m / WiFeS 1200 Robotic C. Lidman DEBASS tns_2025imw_2025-05-03.8_ANU-2.3m_WiFeS_DEBASS.dat tns_2025imw_2025-05-03.8_ANU-2.3m_WiFeS_DEBASS.fits Object

Comments

TNS
System

Tue, 04/29/2025 - 13:43

Object coordinates updated

Object coordinates updated according to AT-report 252971 of Group BlackGEM
Previous RA, DEC: 20:40:42.846, -20:26:08.18 (310.178523333, -20.4356066667)
Updated RA, DEC: 20:40:42.848, -20:26:08.34 (310.178533, -20.43565)