SN 2018hdo
RA/DEC (2000)
04:42:37.960 -53:16:01.13
70.658167 -53.266981
Reporting Group
Discovering Data Source
Discovery Date
2018-10-08 01:40:48.000
Host Name
2MASX J04423745-5316010
Discovery Mag
K. Z. Stanek, P. Vallely, for the ASAS-SN team


 SN_2018hdo - 2018-10-09 16:08:23 FTS / FLOYDS-S (Global SN Project)z=
Show H at z=vexp= km/s
Show He at z=vexp= km/s
Show He II at z=vexp= km/s
Show C II at z=vexp= km/s
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
Show O at z=vexp= km/s
Show [O I] at z=vexp= km/s
Show O II at z=vexp= km/s
Show [O II] at z=vexp= km/s
Show [O III] at z=vexp= km/s
Show O V at z=vexp= km/s
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
Show Å at z=vexp= km/s
Show Å at z=vexp= km/s
Show Å at z=vexp= km/s
Show Å at z=vexp= km/s
Show Tellurics 
Show Galaxy lines at z=
Show WR-WN at z=vexp= km/s
Show WR-WC/O at z=vexp= km/s
   Binning factor: (rounded to nearest integer >1)
Mouse hovers at WL: 0 (rest),0 (observed)
SelectIDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
28682018-10-09 16:08:23FTS / FLOYDS-S2700Las Cumbres ObservatoryDaichi HiramatsuGlobal SN Project tns_2018hdo_2018-10-09_16-08-23_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2018hdo_2018-10-09_16-08-23_FTS_FLOYDS-S_Global_SN_Project.fitsObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
G-GaiaGaia_Gaia-photometric2018-09-20 20:54:14 - 2018-10-22 02:39:502
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
379052018-10-22 02:39:5018.30.2ABMagG-GaiaGaia_Gaia-photometric60Robot
379042018-09-20 20:54:1421.5ABMagG-GaiaGaia_Gaia-photometricRobot[Last non detection]
g-SloanASASSN-5_Payne-Gaposchkin2018-09-29 01:55:12 - 2018-10-08 01:40:482
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
372612018-10-08 01:40:4817.4ABMagg-SloanASASSN-5_Payne-Gaposchkin
372602018-09-29 01:55:1217.7ABMagg-SloanASASSN-5_Payne-Gaposchkin[Last non detection]
AT Reports
IDTime received (UT)SenderReporter/sReportting groupDisc. Data SourceRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
237032018-10-23 21:14:46Gaia_Bot1A. Delgado, D. Harrison, S. Hodgkin, M. van Leeuwen, G. Rixon, A. Yoldas (University of Cambridge), on behalf of Gaia Alerts teamGaiaAlertsGaiaAlerts04:42:37.960-53:16:01.132018-10-22 02:39:50.00018.3G-GaiaPSNGaia18dcxGaiaAlertsconfirmed SN Ia
233812018-10-08 10:23:14KZStanekK. Z. Stanek, P. Vallely, for the ASAS-SN teamASAS-SNASAS-SN04:42:37.793-53:16:02.242018-10-08 01:40:48.00017.4g-SloanPSNASASSN-18xfASAS-SNIn several epochs, unknown redshift host galaxy, most likely in TESS Sector 3 field of view
Classification Reports
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarksADS Bibcode
28612018-10-09 21:25:43dhiramatsuDaichi Hiramatsu, Iair Arcavi, Jamison Burke, D. Andrew Howell, Curtis McCully, Stefano Valenti Global SN ProjectSN Ia0.041Global SN ProjectUsing Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find good fits to several Type Ia supernovae around the maximum light at the redshift of 0.041. At the redshift of 0.041, corresponding to the distance modulus of 36.26, the absolute magnitude in V-band taken at 2018-10-08 23:48:10 is -19.04 mag which is consistent with the Ia classification and its phase. We measure the SiII velocity of 11,000 km/s from the absorption lines.2018TNSCR1537....1H


Object coordinates updated according to AT-report 23703 of Group GaiaAlerts
Previous RA, DEC: 04:42:37.793, -53:16:02.24 (70.65747, -53.26729)
Updated RA, DEC: 04:42:37.960, -53:16:01.13 (70.658167, -53.266981)