RA/DEC (2000)
16:50:31.703 +43:03:27.18
252.632095333 +43.0575513333
Type
SN I
Redshift
0.038
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2018-08-04 08:35:31.000
TNS AT
Y
Public
Y
Discovery Mag
14.899
Filter
orange-ATLAS
Reporter/s
J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), A. Rest (STScI), K. W. Smith, S. J. Smartt, D. R. Young, M. Fulton, O. McBrien, D. O'Neill, P. Clark (Queen's University Belfast)

Spectra

 SN_2018epf - 2018-08-05 19:43:28 UH88 / SNIFS (SCAT)z=
Show H at z=vexp= km/s
Show He at z=vexp= km/s
Show He II at z=vexp= km/s
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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
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Show [O I] at z=vexp= km/s
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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
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Show Tellurics 
Show Galaxy lines at z=
Show WR-WN at z=vexp= km/s
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)

Light curves

 ATLAS-MLO_ATLAS-01_orange
 ATLAS-HKO_ATLAS-02_cyan
   
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
2450 2018-08-05 19:43:28 UH88 / SNIFS 600 M.A.Tucker SCAT tns_2018epf_2458336.321863_UH88_SNIFS_SCAT.dat Object Reduced using a summit quick reduction pipeline, care should be taken before re-using this data for further studies.
Light Curves
Filter Tel / Inst Obs-date range JD Range Photometry
orange-ATLAS ATLAS-MLO_ATLAS-01 2018-08-04 08:35:31 - 2018-08-04 08:35:31 2458334.8579977 - 2458334.8579977 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33059 2018-08-04 08:35:31 2458334.8579977 14.899 0.165 16.62 ABMag orange-ATLAS ATLAS-MLO_ATLAS-01 30 Robot
cyan-ATLAS ATLAS-HKO_ATLAS-02 2018-08-01 11:26:52 - 2018-08-01 11:26:52 2458331.9769907 - 2458331.9769907 1
Photometry
ID Obs-date JD Mag. / Flux Err Lim. Mag./Flux Units Filter Tel / Inst Exp-time Observer/s Remarks
33058 2018-08-01 11:26:52 2458331.9769907 16.63 ABMag cyan-ATLAS ATLAS-HKO_ATLAS-02 30 Robot [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
21225 2018-08-04 11:18:34 ATLAS_Bot1 J. Tonry,B. Stalder,L. Denneau et al. ATLAS ATLAS 16:50:31.703 +43:03:27.18 2018-08-04 08:35:31.000 14.899 orange-ATLAS PSN ATLAS18szp ATLAS 2018TNSTR1095....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
2443 2018-08-06 13:38:14 Michael Tucker Michael A. Tucker, Benjamin J. Shappee (IfA, UH Manoa) SCAT SN I 0.038 1 SCAT SN Ia/b 2018TNSCR1115....1T
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
2450 2018-08-05 19:43:28 UH88 / SNIFS 600 M.A.Tucker SCAT tns_2018epf_2458336.321863_UH88_SNIFS_SCAT.dat Object Reduced using a summit quick reduction pipeline, care should be taken before re-using this data for further studies.

Comments

Stan
Howerton

Wrong transient flagged as a supernova?

The object flagged by the ATLAS team appears to be a Milky Way star or possibly a double star based on its slightly elongated image in SDSS and Gaia proper motion.  The supernova determination by SCAT is in error and perhaps was actually another transient.  More information here