SN 2018ltk
RA/DEC (2000)
07:54:17.361 +14:16:24.01
118.572335789 +14.2733352632
Type
SN Ic
Redshift
0.0153
Reporting Group
ATLAS
Discovering Data Source
ATLAS
Discovery Date
2018-05-13 06:24:28.800
TNS AT
Y
Public
Y
Discovery Mag
18.896
Filter
cyan-ATLAS
Reporter/s
J. Tonry, L. Denneau, A. Heinze, H. Weiland, H. Flewelling (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, O. McBrien, D. O'Neill, P. Clark, M. Fulton, J. Gillanders, M. Dobson (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)

Spectra

 SN_2018ltk - 2019-01-26 05:10:17 P200 / DBSP (ZTF)z=
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   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
Spectra
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
72442019-01-26 05:10:17P200 / DBSPNoneZTF tns_2018ltk_2019-01-26.21547_P200_DBSP_ZTF.asciiObjectZTF
Light Curves
FilterTel / InstObs-date rangePhotometry
cyan-ATLASATLAS-HKO_ATLAS-022018-05-13 06:24:29 - 2018-05-13 06:24:291
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1402072018-05-13 06:24:2918.8960.19919.44ABMagcyan-ATLASATLAS-HKO_ATLAS-0230Robot
orange-ATLASATLAS-HKO_ATLAS-022018-05-05 06:31:41 - 2018-05-05 06:31:411
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
1402062018-05-05 06:31:4119.3ABMagorange-ATLASATLAS-HKO_ATLAS-0230Robot[Last non detection]
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
724382020-05-31 07:17:03ATLAS_Bot1J. Tonry, L. Denneau, A. Heinze, H. Weiland, H. Flewelling (IfA, University of Hawaii), B. Stalder (LSST), A. Rest (STScI), C. Stubbs (Harvard University), K. W. Smith, S. J. Smartt, D. R. Young, S. Srivastav, O. McBrien, D. O'Neill, P. Clark, M. Fulton, J. Gillanders, M. Dobson (Queen's University Belfast), T.-W. Chen (MPE), D. E. Wright (University of Minnesota), J. Anderson (ESO)ATLASATLAS07:54:17.361+14:16:24.012018-05-13 06:24:28.80018.896cyan-ATLASPSNATLAS19bfstATLAS
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
72322020-07-28 19:40:20ZTF_CLU_PUBLICK. De (Caltech) on behalf of ZTFZTFSN Ic0.0153ZTFSample selection based on 2020arXiv200409029D2020TNSCR2316....1D

Comments

2018ltk is a duplicate of 2019abb. 

The primary object is 2019abb. This object 2018ltk was registered by us late, having not been recognised by us until it was cross-matched with a ZTF object. But in doing so, I think it has been given a 2018 name because of a rogue data point in 2018, which has incorrectly been propogated as a discovery date 2018-05-13. This is confidently detected in ATLAS over many epochs, but the rogue data point in 2018 has caused the problem. It should be deprecated but the spectrum from DBSP should be associated with the object 2019abb, rather than being the classification spectrum for this spurious object called 2018ltk.