SN 2017zu
RA/DEC (2000)
16:58:37.69 +50:29:26.48
254.65704 +50.49069
Source Group
Discovery Date
2017-02-01 15:36:00
Host Name
SBS 1657+505
Host Redshift
Discovery Mag
K. Z. Stanek, for the ASAS-SN team
 2017-04-16 08:54:57 MDM-2.4 / OSMOS (ASAS-SN)
 2017-02-24 11:23:30 MDM-2.4 / OSMOS (ASAS-SN)
 2017-02-04 21:21:36 LJT / YFOSC
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 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 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 (observed),0 (rest)
See separate spectra
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
9112017-04-16 08:54:57MDM-2.4 / OSMOSJ. KlusmeyerASAS-SN tns_2017dbf_2457859.871502_MDM-2.4_OSMOS_ASAS-SN.txtObjectASAS-SN
8312017-02-24 11:23:30MDM-2.4 / OSMOSJ. KlusmeyerASAS-SN tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.txt tns_2017zu_2457808.9746602_MDM-2.4_OSMOS_ASAS-SN.fitsObjectASAS-SN
7772017-02-04 21:21:36LJT / YFOSC900Kaixin LuJujia Zhang tns_2017zu_2017-02-04.89_LJT_YFOSC.datObjectPTSS
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-1_Brutus2017-01-20 16:04:48 - 2017-02-01 15:36:003
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
125512017-02-01 15:36:00170.117.8VegaMagV-JohnsonASASSN-1_Brutus
125522017-01-25 15:36:0017.60.218VegaMagV-JohnsonASASSN-1_Brutus
125502017-01-20 16:04:4817.5VegaMagV-JohnsonASASSN-1_Brutus[Last non detection]
i-SloanPS1_GPC12017-04-12 14:05:16 - 2017-04-12 14:05:161
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
160122017-04-12 14:05:1617.110.0220.7ABMagi-SloanPS1_GPC145Robot
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
107672017-04-15 23:23:19PS1_Bot1K. C. Chambers, M. E. Huber, H. Flewelling, E. A. Magnier, A. Schultz, T. Lowe (IfA, University of Hawaii), S. J. Smartt, K. W. Smith, (Queen's University Belfast), J. Tonry, C. Waters, (IfA, University of Hawaii) D. E. Wright, D. R. Young (Queen's University Belfast)Pan-STARRS116:58:37.72+50:29:26.332017-04-12 14:05:1617.11i-SloanPSNPS17chxPan-STARRS1
84432017-02-01 18:11:32KZStanekK. Z. Stanek, for the ASAS-SN teamASAS-SN16:58:37.37+50:29:25.552017-02-01 15:36:0017V-JohnsonPSNASASSN-17bwASAS-SNIn two epochs, on the rise
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
9012017-04-16 17:11:12jlprietoJ. L. Prieto, J. Klusmeyer, S. DongASAS-SNSN IIASAS-SNWe obtained a spectrum of AT2017dbf/PS17chx on UT 2017 Apr. 16.2 with OSMOS mounted on the MDM 2.4m telescope at KPNO. The spectrum of the transient is characteristic of a Type II SN in the plateau phase. After correcting for the redshift of the host, we measure an Halpha expansion velocity of 4700 km/s.
8212017-02-27 18:49:57jlprietoJ. L. PrietoASAS-SNSN IIASAS-SNWe obtained an optical spectrum of ASASSN-17bw on UT 2017 Feb. 24.47 with OSMOS (range 4000-6850 Angstroms, R ~ 2000) mounted on the MDM 2.4m telescope at KPNO. The spectrum shows strong Balmer and Fe II lines with P-Cygni profiles characteristic of a Type II SN, with strong host galaxy contamination (including nebular emission lines). After correcting the spectrum for the redshift of the host galaxy, we measure an expansion velocity from the H-alpha line of 5800 km/s from the minimum of the P-Cygni trough
7672017-02-05 02:45:49xwangJujia Zhang, Kaixin Lu (YNAO), Xiaofeng Wang (Tsinghua University)AGN0.01PTSSA spectrum taken on Feb. 04.89 indicates that this transient is consistent with that of a AGN.


The coordinates of this object - 2017zu - were updated according to the revised values from ASAS-SN, and object 2017dbf was removed.