... Contact A Problem of an estimation of accuracy of the asteroid CCD observations . The Minor Planet Center supported by the Interntional Astronomical Union is the main office for keeping observational data of the small Solar System bodies and their investigations. ... At Pulkovo Observatory we are estimating an accuracy of the CCD asteroid observations obtained by amateurs and professional astronomers all over the World using the MPC database. ...

ПЛАНЕТА ОЗИРИС . ... Озирис оказался первой экзопланетой, которая была исследована как с помощью метода доплеровской спектроскопии, когда измеряются небольшие смещения линий в спектре звезды, вызванные гравитационным влиянием планеты, так и с помощью наблюдения т.н. транзитов, т.е. проходов планеты по диску звезды. ... Озирис вращается вокруг звезды HD 209458 на расстоянии 0,045 а.е. или 6,75 млн км, что составляет менее 9 звездных радиусов. ... Озирис в Энциклопедии внесолнечных планет . ...

... Тhis new concept touches our simple lives, yet for those intrigued by the natural sciences, especially experts deeply engaged in the 'eternal' questions of general geology and astronomy, it is all the more fascinating. The problems to be faced by any theory for the formation of the Solar System . Any theory has to account for certain rather tricky facts about the Solar System. These are in addition to the obvious facts that the Sun is at the centre with the planets in orbit around it. ...

... NOAA 11300's . ... The law latitude recurrent pore was observed in the Northern hemisphere since 20.08 to 30.08.05, with breaks. ... The short-time mid latitudes sunspot was observed in the Southern hemisphere on 24.08 and 25.08.05, near the central meridian. ... The bipolar group of the appreciable sizes was observed at the tenth parallel from 13 to 16.12.05, in the Western part of the Southern hemisphere. 14.12 the total area of the region has reached 150 m.s.h., and sunspots quantity - ten units....

NMW survey overview . Access image archive . ... The New Milky Way survey aims to detect bright (V<13.5) optical transients near the Galactic plane using an automated wide-field (8x6 deg.) system capable of surveying the whole Milky Way area visible from the observing site in one night. ... All images obtained during the transient search survey are available online (please use the image archive access form ). ... Images per field: . ... Images per night: . ... Milky Way imaging time: . ...

... Space research, space communication including TV and radio communication with using satellite systems, Earth and ecological monitoring, the use of satellite, navigation and topogeodesic systems, manned missions, material production in space and lots of other operations could be related to space activity. ... A special 5-year program was developed involving regular Shuttle missions with join crews. ... БИК 2-3 system and "Symbol D" system telemetry data are used to control the Station; . ...

... Imaging GRIN Rod Lens (HAG's) | Relay Rod Lens (LAG's) | ... The Refractive Index Distributions (RID) in GRIN lens preforms are made by multi-stage optimized ion-exchange diffusion between silicate mineral glasses and salt melts. ... In the LAG lenses - L ow A perture GRIN the nature of the changing of refractive index in glass via ion-exchange lies mainly in molecular volume increase. ... LAG lenses are specially treated to create the dark anti-flick surface coating (Fig.2). ...

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... Так вот, в статье речь пойдет о фигурах и поверхностях, которые можно мять и деформировать как угодно (только без разрывов). ... Рис. ... После разбиения поверхности планеты на карты и подсчета чисел В, Р, Г возможны следующие ситуации: В Р + Г = 2 g = 0, планета сфера; В Р + Г = 0 g = 1, планета тор; В Р + Г = 2 g = 2, планета крендель и так далее. ... Докажите, что склейка сторон многоугольника дает сферу, если граф, образованный сторонами многоугольника на склеиваемой поверхности, является...