RA/DEC (2000)
21:30:41.773 -10:37:53.81
322.6740562 -10.6316126
Type
SN Ia-91T-like
Redshift
0.114
Related AstroNotes: 2025-156
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2025-05-23 08:10:22.656
TNS AT
Y
Public
Y
Discovery Mag
18.617
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, 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)

Spectra

 SN_2025lmg - 2025-05-25 07:54:48 ESO-NTT / EFOSC2-NTT (ePESSTO+)z=
Show H at z=vexp= km/s
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Show Si II at z=vexp= km/s
Show S II at z=vexp= km/s
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Show [Ca II] at z=vexp= km/s
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Show Tellurics 
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 GOTO-N_GOTO-2_L
 ATLAS-CHL_ATLAS-04_orange
 ATLAS-STH_ATLAS-03_orange
 P48_ZTF-Cam_g
 CTIO-4m_DECAM_r
   
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
21141 2025-05-25 07:54:48 ESO-NTT / EFOSC2-NTT 900 Stefano Pio Cosentino, Callum Francis Aster Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee ePESSTO+ tns_2025lmg_2025-05-25_07-54-48_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025lmg_2025-05-25_07-54-48_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-N_GOTO-2 2025-05-16 04:04:32 - 2025-05-22 04:47:04 2460811.669812 - 2460817.699352 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
491080 2025-05-22 04:47:04 2460817.699352 18.83 0.21 ABMag L-GOTO GOTO-N_GOTO-2 180
491079 2025-05-16 04:04:32 2460811.669812 18 ABMag L-GOTO GOTO-N_GOTO-2 135 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2025-05-23 08:10:23 - 2025-05-23 08:10:23 2460818.84054 - 2460818.84054 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
490602 2025-05-23 08:10:23 2460818.84054 18.617 0.161 19.07 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
orange-ATLAS ATLAS-STH_ATLAS-03 2025-05-16 01:52:19 - 2025-05-16 01:52:19 2460811.578 - 2460811.578 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
490601 2025-05-16 01:52:19 2460811.578 18.72 ABMag orange-ATLAS ATLAS-STH_ATLAS-03 30 Robot [Last non detection]
g-ZTF P48_ZTF-Cam 2025-05-15 11:04:03 - 2025-05-23 11:13:53 2460810.9611458 - 2460818.9679745 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
490977 2025-05-23 11:13:53 2460818.9679745 18.9375 0.0848933 ABMag g-ZTF P48_ZTF-Cam
490976 2025-05-15 11:04:03 2460810.9611458 19.2768 0.233318 ABMag g-ZTF P48_ZTF-Cam
r-Sloan CTIO-4m_DECAM 2025-05-15 08:10:40 - 2025-05-17 10:11:12 2460810.8407434 - 2460812.9244469 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
490626 2025-05-17 10:11:12 2460812.9244469 19.2359 0.0131832 ABMag r-Sloan CTIO-4m_DECAM
491056 2025-05-15 08:10:40 2460810.8407434 19.4757 0.0138788 ABMag r-Sloan CTIO-4m_DECAM
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
256514 2025-05-24 18:53:25 GOTO_bot B. Godson,D. O'Neill,K. Ackley et al. GOTO GOTO 21:30:41.762 -10:37:54.20 2025-05-22 04:47:03.840 18.83 L-GOTO Other GOTO25dau GOTO N
256500 2025-05-24 16:49:17 DESIRT_Bot Xander J. Hall (Carnegie Mellon U.),Lei Hu (Carnegie Mellon U.),Antonella Palmese (Carnegie Mellon U.) et al. DESIRT DESIRT 21:30:41.771 -10:37:54.05 2025-05-15 08:10:39.936 19.4757 r-Sloan PSN T202505152130418m103754 DESIRT N
256423 2025-05-24 15:07:51 Fritz Jesper Sollerman (SU),Christoffer Fremling (Caltech),Daniel Perley (LJMU) et al. ZTF ZTF 21:30:41.773 -10:37:53.81 2025-05-15 11:04:02.997 19.2768 g-ZTF PSN ZTF25aaqvrbi ZTF N
256170 2025-05-23 21:13:36 DESIRT_Bot Xander J. Hall (Carnegie Mellon U.),Tomás Ahumada (Caltech),Lei Hu (Carnegie Mellon U.) et al. DESIRT DESIRT 21:30:41.778 -10:37:53.81 2025-05-17 10:11:12.480 19.2359 r-Sloan PSN T202505172130418m103754 DESIRT Discovered as part of the DECam ZTF experiment. (PI: Ahumada) N
256158 2025-05-23 18:56:50 ATLAS_Bot1 J. Tonry,L. Denneau,H. Weiland et al. ATLAS ATLAS 21:30:41.734 -10:37:53.90 2025-05-23 08:10:22.656 18.617 orange-ATLAS PSN ATLAS25fhp ATLAS 2025TNSTR1912....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
21141 2025-05-25 16:22:09 ePESSTOplus_Bot1 Stefano Pio Cosentino, Callum Francis Aster, Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee, A. Horowicz on behalf of ePESSTO+ ePESSTO+ SN Ia-91T-like 0.114 1 ePESSTO+ 2025TNSCR1963....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
21141 2025-05-25 07:54:48 ESO-NTT / EFOSC2-NTT 900 Stefano Pio Cosentino, Callum Francis Aster Amar Aryan, Ting-Wan Chen, Yu-Hsing Lee ePESSTO+ tns_2025lmg_2025-05-25_07-54-48_ESO-NTT_EFOSC2-NTT_ePESSTO+.asci tns_2025lmg_2025-05-25_07-54-48_ESO-NTT_EFOSC2-NTT_ePESSTO+.fits Object

Comments

TNS
System

Object coordinates updated

Object coordinates updated according to AT-report 256423 of Group ZTF
Previous RA, DEC: 21:30:41.734, -10:37:53.90 (322.673891667, -10.63164)
Updated RA, DEC: 21:30:41.773, -10:37:53.81 (322.6740562, -10.6316126)