SN 2018hpu
RA/DEC (2000)
03:18:21.293 -41:36:34.85
49.58872 -41.60968
Source Group
Discovery Date
2018-10-19 03:42:12
Host Name
LCRS B031632.6-414727
Discovery Mag
J. Shields, P. Vallely, for the ASAS-SN team


 SN_2018hpu - 2018-11-01 00:04:14 SOAR / Goodmanz=
 SN_2018hpu - 2018-10-31 15:55:52 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 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 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 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
29572018-11-01 00:04:14SOAR / GoodmanR. Cartier/C. E. Martinez-VazquezR. Cartier tns_2018hpu_2018-11-01_00-04-14_SOAR_Goodman.asciObject
29442018-10-31 15:55:52FTS / FLOYDS-S3600Las Cumbres ObservatoryDaichi HiramatsuGlobal SN Project tns_2018hpu_2018-10-31_15-55-52_FTS_FLOYDS-S_Global_SN_Project.ascii tns_2018hpu_2018-10-31_15-55-52_FTS_FLOYDS-S_Global_SN_Project.fitsObjectGlobal SN Project
Light Curves
FilterTel / InstObs-date rangePhotometry
g-SloanASASSN-3_Paczynski2018-10-18 04:34:04 - 2018-10-28 07:58:393
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
380822018-10-28 07:58:3917.4ABMagg-SloanASASSN-3_Paczynski
380812018-10-19 03:42:1218.2ABMagg-SloanASASSN-3_Paczynski
380802018-10-18 04:34:0418.28ABMagg-SloanASASSN-3_Paczynski[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
237912018-10-29 18:04:34vallely.7J. Shields, P. Vallely, for the ASAS-SN teamASAS-SN03:18:21.293-41:36:34.852018-10-19 03:42:1218.2g-SloanPSNASASSN-18ynASAS-SNIn multiple epochs, unknown redshift host.
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
29492018-11-02 01:13:10rcartierRegis CartierSN Ia0.066Redshift obtained using a strong Na D absorption line from the host galaxy, the value reported here it is consistent with the value reported by Hiramatsu et. al on TNS. From the Si II λ 6355 line we measure a expansion velocity of 14057 km/s, also consistent with Hiramatsu et. al. The best match is to SN 2003ic at +3 d.
29362018-11-01 00:58:42dhiramatsuDaichi Hiramatsu, Iair Arcavi, Jamison Burke, D. Andrew Howell, Curtis McCully, Stefano ValentiGlobal SN ProjectSN Ia0.067Global SN ProjectUsing Superfit (Howell et al. 2005, ApJ, 634, 1190) and SNID (Blondin & Tonry 2007, ApJ, 666, 1024), we find a reasonable fit to the Type Ia SN 1999aa around the maximum light. We measure the redshift of 0.067 from the host galaxy Na absorption. The somewhat red spectrum and the presence of Na absorption suggest some host extinction. At the redshift of 0.067, the absolute magnitude in V-band taken at 2018-10-31 08:10:21 is -20.2 mag, indicating that this may be an over-luminous Type Ia. We measure the SiII velocity of 14,000 km/s from the absorption lines.