RA/DEC (2000)
07:43:22.180 -29:12:55.50
115.842417 -29.215417
Type
SN Ia
Redshift
0.025
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-01-30 04:11:19.392
TNS AT
Y
Public
Y
Discovery Mag
19.307
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)

Spectra

 SN_2025akv - 2025-01-31 00:28:41 SALT / RSS (DLT40)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_cyan
 ATLAS-STH_ATLAS-03_orange
 BG4_BlackGEM-Cam4_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
20283 2025-01-31 00:28:41 SALT / RSS 1800 M. Mogotsi S. W. Jha DLT40 tns_2025akv_2460706.51992477_SALT_RSS_DLT40.dat tns_2025akv_2460706.51992477_SALT_RSS_DLT40.fits Object Type Ia supernova near maximum light. Expansion velocity is 12,200 km/s based on the minimum of the Si II 635.5 nm absorption. The slit was placed through the likely host galaxy to the east of the SN position, yielding a redshift of z = 0.025, consistent with the supernova spectral features. There is significant reddening from the Milky Way.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-4 2025-01-29 11:39:46 - 2025-01-29 11:39:46 2460704.985952 - 2460704.985952 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
465463 2025-01-29 11:39:46 2460704.985952 18.87 0.13 ABMag L-GOTO GOTO-S_GOTO-4 180
L-GOTO GOTO-S_GOTO-3 2025-01-27 10:55:27 - 2025-01-27 10:55:27 2460702.955173 - 2460702.955173 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
465462 2025-01-27 10:55:27 2460702.955173 19 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
cyan-ATLAS ATLAS-CHL_ATLAS-04 2025-01-30 04:11:19 - 2025-01-30 04:11:19 2460705.67453 - 2460705.67453 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
465453 2025-01-30 04:11:19 2460705.67453 19.307 0.37 19.43 ABMag cyan-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-01-29 02:56:25 - 2025-01-29 02:56:25 2460704.62251 - 2460704.62251 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
465452 2025-01-29 02:56:25 2460704.62251 17.49 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2024-12-28 08:11:43 - 2025-02-23 00:59:25 2460672.8414699 - 2460729.5412616 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
471299 2025-02-23 00:59:25 2460729.5412616 18.98 0.05 21.5 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic
471298 2024-12-28 08:11:43 2460672.8414699 21.26 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [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
245744 2025-02-24 06:17:02 BlackGEM_Bot1 P. Groot, H. Tranin, F. Stoppa et al. BlackGEM BlackGEM 07:43:22.180 -29:12:55.50 2025-02-23 00:59:25.000 18.98 BG-q-BlackGem PSN BGEM J074322.18-291255.4 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2025akv_atrep_245744_BlackGEM.pdf Finding Chart 2025-02-24 06:17:04 BlackGEM_Bot1
242878 2025-01-30 08:31:53 GOTO_bot D. O'Neill, G. Ramsay, K. Ackley et al. GOTO GOTO 07:43:22.197 -29:12:55.56 2025-01-29 11:39:46.080 18.87 L-GOTO Other GOTO25wh GOTO N
242873 2025-01-30 08:15:48 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 07:43:22.175 -29:12:55.25 2025-01-30 04:11:19.392 19.307 cyan-ATLAS PSN ATLAS25bdi ATLAS 2025TNSTR.411....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
20283 2025-01-31 06:45:16 Saurabh W. Jha Saurabh W. Jha, M. Mogotsi, S. Valenti, D. J. Sand, M. Lundquist, J. E. Andrews, E. Hoang, M. Shrestha, Y. Dong, D. Janzen, G. Hosseinzadeh, J. Pearson, N. Meza, K. A. Bostroem, D. Mehta, A. Ravi, A. Martas DLT40 SN Ia 0.025 1 DLT40 2025TNSCR.432....1J
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
20283 2025-01-31 00:28:41 SALT / RSS 1800 M. Mogotsi S. W. Jha DLT40 tns_2025akv_2460706.51992477_SALT_RSS_DLT40.dat tns_2025akv_2460706.51992477_SALT_RSS_DLT40.fits Object Type Ia supernova near maximum light. Expansion velocity is 12,200 km/s based on the minimum of the Si II 635.5 nm absorption. The slit was placed through the likely host galaxy to the east of the SN position, yielding a redshift of z = 0.025, consistent with the supernova spectral features. There is significant reddening from the Milky Way.

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 245744 of Group BlackGEM
Previous RA, DEC: 07:43:22.175, -29:12:55.25 (115.842397, -29.215348)
Updated RA, DEC: 07:43:22.180, -29:12:55.50 (115.842417, -29.215417)