RA/DEC (2000)
16:52:46.420 -59:13:26.94
253.193417 -59.22415
Type
SN II
Redshift
0.00499
Discovery ReportClassification Report
Reporting Group
DLT40
Discovering Data Source
DLT40
Discovery Date
2024-07-23 03:11:11.328
TNS AT
Y
Public
Y
Host Name
NGC6221
Discovery Mag
15.1362
Filter
Clear-
Reporter/s
D. Janzen, D. J. Sand, M. Shrestha, S. Valenti, S. D. Wyatt, J. Pearson, Y. Dong, M. Lundquist, E. Hoang, J. Jencson, G. Hosseinzadeh, J. E. Andrews, N. Meza, K. A. Bostroem
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2024pxg - 2024-07-23 23:35:22 SOAR / Goodman (DLT40)z=
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▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
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▌Show Tellurics 
▌Show Galaxy lines at z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ▌GOTO-S_GOTO-3_L
 ▌ATLAS-CHL_ATLAS-04_orange
 ▌BG4_BlackGEM-Cam4_BG-q
 ▌BG2_BlackGEM-Cam2_BG-q
 ▌Gaia_Gaia-photometric_G
 ▌Other_Other_Clear
   
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
17606 2024-07-23 23:35:22 SOAR / Goodman 900 Rebecca Kyer DLT40 tns_2024pxg_2460515.482892153_SOAR_Goodman_DLT40.dat tns_2024pxg_2460515.482892153_SOAR_Goodman_DLT40.fits Object
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
L-GOTO GOTO-S_GOTO-3 2024-06-28 12:13:46 - 2024-07-24 10:54:05 2460490.009556 - 2460515.954231 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
420540 2024-07-24 10:54:05 2460515.954231 14.94 0.01 ABMag L-GOTO GOTO-S_GOTO-3 135
420539 2024-06-28 12:13:46 2460490.009556 19.5 ABMag L-GOTO GOTO-S_GOTO-3 180 [Last non detection]
orange-ATLAS ATLAS-CHL_ATLAS-04 2024-07-21 03:06:15 - 2024-07-25 02:43:10 2460512.62934 - 2460516.61331 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
420663 2024-07-25 02:43:10 2460516.61331 14.895 0.008 18.65 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot
420662 2024-07-21 03:06:15 2460512.62934 17.86 ABMag orange-ATLAS ATLAS-CHL_ATLAS-04 30 Robot [Last non detection]
BG-q-BlackGem BG4_BlackGEM-Cam4 2024-07-17 00:43:15 - 2024-07-17 00:43:15 2460508.5300347 - 2460508.5300347 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
420739 2024-07-17 00:43:15 2460508.5300347 19.89 ABMag BG-q-BlackGem BG4_BlackGEM-Cam4 60 robotic [Last non detection]
BG-q-BlackGem BG2_BlackGEM-Cam2 2024-07-26 00:31:20 - 2024-07-26 00:31:20 2460517.5217593 - 2460517.5217593 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
420740 2024-07-26 00:31:20 2460517.5217593 14.78 0.01 21.27 ABMag BG-q-BlackGem BG2_BlackGEM-Cam2 60 robotic
G-Gaia Gaia_Gaia-photometric 2024-03-23 07:37:55 - 2024-07-24 07:32:10 2460392.818 - 2460515.814 2
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
420850 2024-07-24 07:32:10 2460515.814 14.94 0.2 ABMag G-Gaia Gaia_Gaia-photometric 60 Robot
420849 2024-03-23 07:37:55 2460392.818 21.5 ABMag G-Gaia Gaia_Gaia-photometric Robot [Last non detection]
Clear- Other_Other 2020-06-15 21:02:24 - 2024-10-22 18:03:27 2459016.37667 - 2460606.2524 5
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
452353 2024-10-22 18:03:27 2460606.2524 14.2 18 VegaMag Clear- Other_Other 60 Robot MASTER-SAAO
452352 2024-10-22 17:58:09 2460606.24872 14.2 17.7 VegaMag Clear- Other_Other 60 Robot MASTER-SAAO
420286 2024-07-23 03:11:11 2460514.63277 15.1362 0.25 ABMag Clear- Other_Other 60 Robot Prompt5 0.4m
420285 2024-07-22 01:59:14 2460513.5828 18.0274 ABMag Clear- Other_Other 60 Robot [Last non detection] Prompt5 0.4m
452351 2020-06-15 21:02:24 2459016.37667 19.7 VegaMag Clear- 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
235586 2024-12-10 14:13:58 MASTER K.Kondrashov, V.Shumkov, V.Lipunov et al. MASTER MASTER 16:52:46.520 -59:13:26.50 2024-10-22 17:58:09.408 14.2 Clear- PSN MASTER OT J165246.52-591326.5 MASTER N
219535 2024-07-26 19:59:48 Gaia_Bot1 S.T. Hodgkin, E. Breedt, A. Delgado et al. GaiaAlerts GaiaAlerts 16:52:46.420 -59:13:26.94 2024-07-24 07:32:09.600 14.94 G-Gaia PSN Gaia24bzi GaiaAlerts Confirmed SN II N
219481 2024-07-26 07:39:25 BlackGEM_Bot1 F. Stoppa, J. van Roestel, D. Pieterse et al. BlackGEM BlackGEM 16:52:46.374 -59:13:26.79 2024-07-26 00:31:20.000 14.78 BG-q-BlackGem 1 PSN BGEM J165246.37-591326.7 BlackGEM N
Related files
File Comments Last Modified (UT) Modified By
tns_2024pxg_atrep_219481_BlackGEM.pdf Finding Chart 2024-07-26 07:39:26 BlackGEM_Bot1
219441 2024-07-25 12:43:08 ATLAS_Bot1 J. Tonry, L. Denneau, H. Weiland et al. ATLAS ATLAS 16:52:46.415 -59:13:26.94 2024-07-25 02:43:09.984 14.895 orange-ATLAS PSN ATLAS24lqn ATLAS N
219370 2024-07-24 12:27:21 GOTO_bot J. Lyman, K. Ackley, M. Dyer et al. GOTO GOTO 16:52:46.414 -59:13:26.94 2024-07-24 10:54:05.472 14.94 L-GOTO Other GOTO24dst GOTO N
219240 2024-07-23 03:19:57 DLT40_bot1 D. Janzen, D. J. Sand, M. Shrestha et al. DLT40 DLT40 16:52:46.420 -59:13:26.85 2024-07-23 03:11:11.328 15.1362 Clear- PSN NGC6221 DLT24t DLT40 2024TNSTR2544....1J N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
17519 2024-07-24 06:08:20 K. Azalee Bostroem K. A. Bostroem, R. Kyer, J. Strader, M. Shrestha, M. Newsome, G. Terreran, C. McCully, D. J. Sand, S. Jha, J. E. Andrews, S. Valenti, M. Lundquist, E. Hoang, Y. Dong, D. Janzen, G. Hosseinzadeh, J. Pearson, N. Meza, D. Metha, A. Ravi, A. Martas, D. A. Howell, M. Andrews, J. Farah, E. Padilla Gonzalez DLT40 SN II 0.00499 1 DLT40, Global SN Project The DLT40 team and Global Supernova Project obtained two spectra of AT 2024pxg with the FLOYDS spectrograph on the 2m FTS telescope on 2024-07-23 12:00:38 and the Goodman spectrograph on the SOAR telescope on 2024-07-23 23:35:21.882. There is a broad, shallow P Cygni profile with the emission centered around 6600A and a broad emission line around 4700. Using Gelato, we find this is well matched to a young Type II supernova around 4 days after explosion with E(B-V)=0.3 at a redshift of 0.0049, consistent with the redshift of the nearby galaxy NGC 6221. We note however, that although we find a young Type II supernova to be the best fit spectroscopically and consistent with the likely host galaxy and non-detection, both SNID and Gelato found matches to multiple supernova types. The Na I absorption of the host galaxy and Milky Way have similar depths, implying a similar level of extinction in each galaxy. From the galactic extinction maps of Schlafly & Finkbeiner 2011, the Milky Way extinction is E(B-V)=0.15. We thus find the extinction found from the template fitting in Gelato to be realistic. We highlight that this supernova was vetted and a classification spectrum was obtained without any human intervention. The DLT40 survey automatically obtained a confirmation image of the candidate based on a high machine learning score and the FLOYDS spectrum was automatically triggered based on confirmation the image. 2024TNSCR2571....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
17606 2024-07-23 23:35:22 SOAR / Goodman 900 Rebecca Kyer DLT40 tns_2024pxg_2460515.482892153_SOAR_Goodman_DLT40.dat tns_2024pxg_2460515.482892153_SOAR_Goodman_DLT40.fits Object

Comments

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 219535 of Group GaiaAlerts
Previous RA, DEC: 16:52:46.374, -59:13:26.79 (253.193225, -59.224108)
Updated RA, DEC: 16:52:46.420, -59:13:26.94 (253.193417, -59.22415)

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 219481 of Group BlackGEM
Previous RA, DEC: 16:52:46.415, -59:13:26.94 (253.193396875, -59.22415)
Updated RA, DEC: 16:52:46.374, -59:13:26.79 (253.193225, -59.224108)

TNS
System

Sun, 12/22/2024 - 17:58

Object coordinates updated

Object coordinates updated according to AT-report 219441 of Group ATLAS
Previous RA, DEC: 16:52:46.420, -59:13:26.85 (253.193417, -59.224125)
Updated RA, DEC: 16:52:46.415, -59:13:26.94 (253.193396875, -59.22415)

David
Bishop

Sun, 12/22/2024 - 17:58

Host NGC 6221

Host galaxy is NGC 6221 zhost=0.004999, also host of supernova 1990W