SN 2018ddr
RA/DEC (2000)
13:58:38.47 +07:13:01.24
209.660273 +7.2170123
Type
SN IIb
Redshift
0.01462
Source Group
ZTF
Discovery Date
2018-07-03 07:13:26
TNS AT
Y
Public
Y
Discovery Mag
18.42
Filter
r-ZTF
Discoverer/s
C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaboration
 2018-07-15 01:16:20 LCO-duPont / WFCCD (ASAS-SN)
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   Binning factor: (rounded to nearest integer >1)
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Spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
22802018-07-15 01:16:20LCO-duPont / WFCCDL. Khlat (ENS-Lyon), J. L. Prieto (UDP)ASAS-SN tns_2018ddr_2458314.55302083_LCO-duPont_WFCCD_ASAS-SN.txt tns_2018ddr_2458314.55302083_LCO-duPont_WFCCD_ASAS-SN.fitsObjectASAS-SN
Light Curves
FilterTel / InstObs-date rangePhotometry
cyan-ATLASATLAS1_ACAM12018-07-11 07:59:31 - 2018-07-11 07:59:311
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
314412018-07-11 07:59:3117.7670.04119.58ABMagcyan-ATLASATLAS1_ACAM130Robot
orange-ATLASATLAS1_ACAM12018-07-03 08:06:43 - 2018-07-03 08:06:431
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
314402018-07-03 08:06:4319.56ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
G-GaiaGaia_Gaia-photometric2018-06-13 12:01:26 - 2018-07-05 04:11:592
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
312392018-07-05 04:11:5918.190.2ABMagG-GaiaGaia_Gaia-photometric60Robot
312382018-06-13 12:01:2621.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
g-ZTFP48_ZTF-Cam2018-07-06 04:36:28 - 2018-07-06 04:36:281
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
311972018-07-06 04:36:2818.32ABMagg-ZTFP48_ZTF-Cam30ZTF
r-ZTFP48_ZTF-Cam2018-06-27 05:35:31 - 2018-07-03 07:13:262
Photometry
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
311962018-07-03 07:13:2618.42ABMagr-ZTFP48_ZTF-Cam30ZTF
311952018-06-27 05:35:3119.39ABMagr-ZTFP48_ZTF-Cam30ZTF[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
201452018-07-12 09:36:48ATLAS_Bot1J. 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)ATLAS13:58:38.51+07:13:01.052018-07-11 07:59:3117.767cyan-ATLASPSNATLAS18sahATLAS
200262018-07-07 17:14:35Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlerts13:58:38.47+07:13:01.272018-07-05 04:11:5918.19G-GaiaPSNGaia18bskGaiaAlertscandidate SN near galaxy NVSS J135838+071256
200082018-07-07 05:15:45ZTF_Bot1C. Fremling (Caltech) on behalf of the Zwicky Transient Facility (ZTF) collaborationZTF13:58:38.47+07:13:01.242018-07-03 07:13:2618.42r-ZTFPSNZTF18abdmlyaZTF
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
23382018-07-27 21:54:15ZTF_Bot1C. Fremling, Y. Sharma (Caltech) on behalf of the Zwicky Transient Facility (ZTF)ZTFSN IIb0.01462ZTF
22732018-07-15 08:36:09jlprietoL. Khlat (ENS-Lyon), J. L. Prieto (UDP), S. Dong (KIAA-PKU)ASAS-SNSN IIb0.01468ASAS-SNWe obtained an optical low-resolution spectrum of supernovae candidates on UT 2018 July 15 with WFCCD mounted on the du Pont 2.5m telescope at Las Campanas Observatory. The spectrum of SN2018ddr is that of a Type IIb before maximum light. SNID (Blondin & Tonry 2007) gives a best fit age of -11.6 days before maximum light and z=0.019 as the redshift, consistent with the host galaxy redshift.