. Authors . Problem . Method . Advises . Contact Analysis of an accuracy of CCD asteroid observations carried out by professional and amateur astronomers . An accuracy estimation of CCD asteroid observations contained in the Minor Planet Center Database and carried out in the years 1999 - 2006 is realized. About 20 millions individual positions of the Numbered and Unnumbered Minor Planets were tested by means of calculations of (O-C) residuals to derive "mean error of a single observation" for more than 400
Астероид 1620 Географ принадлежит к классу объектов, сближающихся с Землей. ... На основе этих наблюдений были определены сидерический период вращения Географа, равный 0.2176 суток, и направление вращения, которое оказалось обратным. ... колебания блеска с периодами, существенно меньшими периода вращения астероида . ... Период 0.224 суток, выявленный при исследовании кривых блеска 1994 и 1969 годов, может быть вызван наличием спутника, движущимся практически синхронно с вращением Географа. ...
... Reports on progress and error are always recorded in the log file of the program. ... UT date of the measurement finish in YYYY-MM-DD format UT time of the measurement finish in hh:mm:ss format Average flux in A aperture Average flux in B aperture Average flux in C aperture Average flux in D aperture Normalized variance of flux in A aperture Normalized variance of flux in B aperture Normalized variance of flux in C aperture Normalized variance of flux in D ...
... Survey processing . ... ESO - Public Surveys . ... 21/12/2009 Release of Science Verification Data . ... 11/12/2009 Press release about VISTA (Text, Images and Videos) . The ESO press release is at www.eso.org/public/outreach/press-rel/pr-2009/pr-49-09.html . ... 10/12/2009 15:00+ Ownerhsip of VISTA accepted by ESO from STFC (UK Goverenment representative) . ... 15/10/2009 Science Verification period started (see 21/12/9 for release) . ... 17/04/2008 Press releases om M1 from ESO , STFC and QMUL . ...