RA/DEC (2000)
13:54:24.360 -48:30:44.57
208.6015 -48.51238
Type
SN Ia
Redshift
0.00917
Discovery ReportClassification Report
Reporting Group
ASAS-SN
Discovering Data Source
ASAS-SN
Discovery Date
2020-01-05 08:38:24.000
TNS AT
Y
Public
Y
Host Name
NGC 5333
Host Redshift
0.00918
Discovery Mag
15.5
Filter
g-Sloan
Reporter/s
K. Z. Stanek, for the ASAS-SN team
NEDSIMBADDECaLSPanSTARRS-1SkyMapperVizieRWISEDSSADS

Spectra

 ▌SN_2020ga - 2020-01-07 08:48:21 CTIO-4m / COSMOS (None)z=
▌Show H at z=vexp= km/s
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▌Show Mg at z=vexp= km/s
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▌Show Ca II at z=vexp= km/s
▌Show [Ca II] at z=vexp= km/s
▌Show Fe 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

 ▌ASASSN-3_Paczynski_g
 ▌ASASSN-2_Cassius_g
   
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
5882 2020-01-07 08:48:21 CTIO-4m / COSMOS R. Cartier/S. Points R. Cartier None tns_2020ga_2020-01-07_08-48-21_CTIO-4m_COSMOS.asci Object The spectrum is consistent with a nearby SN Ia a few days before maximum heavily contaminated by host galaxy and with strong absorptions from Ca II H&K and Na D1 & D2 at the host galaxy redshift, indicative of significant host extinction in the line of sight. This is consistent with the SN being a nuclear transient. The reported distances to the host varies from 25 to 40 Mpc.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
g-Sloan ASASSN-3_Paczynski 2019-12-31 08:23:59 - 2019-12-31 08:23:59 2458848.8499884 - 2458848.8499884 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
111377 2019-12-31 08:23:59 2458848.8499884 17 ABMag g-Sloan ASASSN-3_Paczynski [Last non detection]
g-Sloan ASASSN-2_Cassius 2020-01-05 08:38:24 - 2020-01-05 08:38:24 2458853.86 - 2458853.86 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
111378 2020-01-05 08:38:24 2458853.86 15.5 ABMag g-Sloan ASASSN-2_Cassius
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
57770 2020-01-05 18:07:21 Krzysztof Stanek K. Z. Stanek, for the ASAS-SN team ASAS-SN ASAS-SN 13:54:24.360 -48:30:44.57 2020-01-05 08:38:24.000 15.5 g-Sloan PSN NGC 5333 ASASSN-20ag ASAS-SN Present in several epochs, rapid rise, might be a nuclear event (AGN or TDE) 2020TNSTR..50....1S N
Classification Reports
ID Time received (UT) Sender Classifier/s Group Classification Redshift Spectra Related files Assoc. Groups End prop. period Remarks ADS Bibcode
5874 2020-01-09 06:34:02 Regis Cartier R. Cartier, S. Points, J. Seron (CTIO) None SN Ia 0.00917 1 1 2020TNSCR..89....1C
Related files
File Comments Last Modified (UT) Modified By
tns_2020ga_classrep_5874.ps 2020-01-09 06:34:02 Regis Cartier
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
5882 2020-01-07 08:48:21 CTIO-4m / COSMOS R. Cartier/S. Points R. Cartier None tns_2020ga_2020-01-07_08-48-21_CTIO-4m_COSMOS.asci Object The spectrum is consistent with a nearby SN Ia a few days before maximum heavily contaminated by host galaxy and with strong absorptions from Ca II H&K and Na D1 & D2 at the host galaxy redshift, indicative of significant host extinction in the line of sight. This is consistent with the SN being a nuclear transient. The reported distances to the host varies from 25 to 40 Mpc.

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