Hee-Jae Lee, H. Moon, Myung-Jin Kim, Chun-Hwey Kim, J. Ďurech, Young‐Jun Choi, Y. Oh, Jintae Park, D. Roh, H. Yim, S. Cha, Yongseok Lee
{"title":"PHOTOMETRIC STUDY OF NPA ROTATOR (5247) KRYLOV","authors":"Hee-Jae Lee, H. Moon, Myung-Jin Kim, Chun-Hwey Kim, J. Ďurech, Young‐Jun Choi, Y. Oh, Jintae Park, D. Roh, H. Yim, S. Cha, Yongseok Lee","doi":"10.5303/JKAS.2017.50.3.41","DOIUrl":null,"url":null,"abstract":"We conduct BVRI and R band photometric observations of asteroid (5247) Krylov from January 2016 to April 2016 for 51 nights using the Korea Microlensing Telescope Network (KMTNet). The color indices of (5247) Krylov at the light curve maxima are determined as B − V = 0.841 ± 0.035, V −R = 0.418± 0.031, and V − I = 0.871± 0.031 where the phase angle is 14.1◦. They are acquired after the standardization of BVRI instrumental measurements using the ensemble normalization technique. Based on the color indices, (5247) Krylov is classified as a S-type asteroid. Double periods, that is, a primary period P1 = 82.188 ± 0.013 h and a secondary period P2 = 67.13 ± 0.20 h are identified from period searches of its R band light curve. The light curve phases with P1 and this indicate that it is a typical Non-Principal Axis (NPA) asteroid. We discuss the possible causes of its NPA rotation.","PeriodicalId":49994,"journal":{"name":"Journal of the Korean Astronomical Society","volume":"50 1","pages":"41-49"},"PeriodicalIF":1.1000,"publicationDate":"2017-06-30","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"2","resultStr":null,"platform":"Semanticscholar","paperid":null,"PeriodicalName":"Journal of the Korean Astronomical Society","FirstCategoryId":"101","ListUrlMain":"https://doi.org/10.5303/JKAS.2017.50.3.41","RegionNum":4,"RegionCategory":"物理与天体物理","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q3","JCRName":"ASTRONOMY & ASTROPHYSICS","Score":null,"Total":0}
引用次数: 2
Abstract
We conduct BVRI and R band photometric observations of asteroid (5247) Krylov from January 2016 to April 2016 for 51 nights using the Korea Microlensing Telescope Network (KMTNet). The color indices of (5247) Krylov at the light curve maxima are determined as B − V = 0.841 ± 0.035, V −R = 0.418± 0.031, and V − I = 0.871± 0.031 where the phase angle is 14.1◦. They are acquired after the standardization of BVRI instrumental measurements using the ensemble normalization technique. Based on the color indices, (5247) Krylov is classified as a S-type asteroid. Double periods, that is, a primary period P1 = 82.188 ± 0.013 h and a secondary period P2 = 67.13 ± 0.20 h are identified from period searches of its R band light curve. The light curve phases with P1 and this indicate that it is a typical Non-Principal Axis (NPA) asteroid. We discuss the possible causes of its NPA rotation.
期刊介绍:
JKAS is an international scientific journal publishing papers in all fields of astronomy and astrophysics. All manuscripts are subject to the scrutiny of referees. Manuscripts submitted to JKAS must comply with the ethics policy of JKAS. Six regular issues are published each year on February 28, April 30, June 30, August 31, October 31, and December 31. One year''s issues compose one volume.