SN 2018oh
RA/DEC (2000)
09:06:39.54 +19:20:17.77
136.66475 +19.33827
Source Group
Discovery Date
2018-02-04 11:45:36
Host Name
UGC 04780
Host Redshift
Discovery Mag
K. Z. Stanek, for the ASAS-SN team
 2018-02-06 16:47:59 Lijiang-2.4m / YFOSC
 2018-02-05 00:03:12 Other / Other
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See separate spectra
Separated 2.279 arcsec from KEGS-C16 source (Galaxy): RA=09:06:39.41, DEC=+19:20:16.47
Separated 8.021 arcsec from KEGS-C16 source (Galaxy): RA=09:06:39.40, DEC=+19:20:10.00
Separated 22.252 arcsec from KEGS-C16 source (Galaxy): RA=09:06:40.76, DEC=+19:20:31.84
IDObs-date (UT)Tel / InstExp-TimeObserver/sReducer/sGroupSpectrum ascii fileSpectrum fits fileSpec. TypeAssoc. GroupsEnd prop. periodRemarks
17072018-02-06 16:47:59Lijiang-2.4m / YFOSC1350Jujia Zhang tns_2018oh_2018-02-06.7_Lijiang-2.4m_YFOSC.datObject
16872018-02-05 00:03:12Other / Other600R LeadbeaterR Leadbeater tns_2018oh_2018-02-05_00-03-12_Other_Other.dat tns_2018oh_2018-02-05_00-03-12_Other_Other.fitObjectR~150 spectrum obtained using modified ALPY spectrograph at Three Hills Observatory as described here
Light Curves
FilterTel / InstObs-date rangePhotometry
V-JohnsonASASSN-1_Brutus2018-01-27 07:12:00 - 2018-02-04 11:45:362
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
252082018-02-04 11:45:3615.15VegaMagV-JohnsonASASSN-1_Brutus
252072018-01-27 07:12:0017VegaMagV-JohnsonASASSN-1_Brutus[Last non detection]
i-SloanPS1_GPC12018-02-03 07:59:31 - 2018-02-03 07:59:311
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
252412018-02-03 07:59:3115.610.0120.7ABMagi-SloanPS1_GPC130Robot
orange-ATLASATLAS1_ACAM12018-01-25 14:25:26 - 2018-01-29 12:47:312
IDObs-dateMag. / FluxErrLim. Mag./FluxUnitsFilterTel / InstExp-timeObserver/sRemarks
252392018-01-29 12:47:3117.1450.07318.59ABMagorange-ATLASATLAS1_ACAM130Robot
252382018-01-25 14:25:2614.86ABMagorange-ATLASATLAS1_ACAM130Robot[Last non detection]
AT Reportings
IDTime received (UT)SenderReporter/s (Discoverer/s)GroupRADECDiscovery date (UT)Discovery Mag.FilterRelated filesAT TypeInternal nameAssoc. GroupsEnd prop. periodRemarks
167792018-02-05 01:09:05PS1_Bot1K. C. Chambers, M. E. Huber, H. Flewelling, E. A. Magnier, A. Schultz, T. Lowe, J. Bulger (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 (University of Minnesota), D. R. Young (Queen's University Belfast), A. Rest (STScI), B. E. Tucker (Mt Stromlo Observatory, ANU), G. Narayan (STScI), P. M. Garnavich (Notre Dame), S. Margheim (Gemini Observatory), D. Kasen (UCB/LBL), R. Olling, E. Shaya (University of Maryland)Pan-STARRS109:06:39.57+19:20:17.132018-02-03 07:59:3115.61i-SloanPSNPS18grPan-STARRS1
167772018-02-05 00:00:06ATLAS_Bot1J. Tonry, B. Stalder, L. Denneau, A. Heinze, H. Weiland (IfA, University of Hawaii), A. Rest (STScI), K.W. Smith, S. J. Smartt, M. Fulton, O. McBrien (Queen's University Belfast)ATLAS09:06:39.58+19:20:17.232018-01-29 12:47:3117.145orange-ATLASPSNATLAS18lwyATLAS
167512018-02-04 15:25:40KZStanekK. Z. Stanek, for the ASAS-SN teamASAS-SN09:06:39.54+19:20:17.772018-02-04 11:45:3615.15V-JohnsonPSNASASSN-18btASAS-SNClear detection in several telescopes, on the rise
Classification Reportings
IDTime received (UT)SenderClassifier/sGroupClassificationRedshiftRelated filesAssoc. GroupsEnd prop. periodRemarks
17022018-02-07 09:38:36jujiaJujia Zhang, Yuxin Xin (YNAO), Wenxiong Li, Xiaofeng Wang (Tsinghua University), Hanjie Tan (Chinese Culture University)SN Ia0.012The spectrum of SN 2018oh matches with the normal type Ia supernova SN 2003du at t = -8 days relative to the maximum light.
16822018-02-05 00:48:47THORobin LeadbeaterSN Ia0.012Classification using SNID ( Blondin, S. & Tonry, J. L. 2007. ApJ, 666, 1024) predicts a type Ia supernova 6 days before maximum.