Для каждой планеты существует некая область, называемая сферой Хилла, где движение тел контролируется этой планетой. Вы можете расчитать радиус сферы Хилла для Вашего случая, используя приведенную ниже форму (по умолчанию выставлены данные для Земли): . Масса планеты (в массах Земли) . ... область орбит с обратным вращением Образование спутников возможно только в зоне 0.4 радиуса сферы Хилла, где дисперсия скоростей невелика и при столкновениях частиц происходит их слипание, а не разрушение. ...
... Вы можете опубликовать Ваши материалы на сайте www.astroproject.info! ... Ведется работа по добавлению интерактивных карт SKY-MAP в каталог DSO. ... Сайт принят в каталог DMOZ! Через несколько недель после подачи заявки, сайт "Астрономия и астрономические наблюдения" был принят в каталог DMOZ - самый важный мировой каталог интернет ресурсов! ... Закончен начальный этап развития сайта, включивший создание каталога для городских наблюдений, форума и регулярного обновления новостей. ... Выход сайта . ...
. A Gaia test image of the young star cluster NGC 1818 in the Large Magellanic Cloud, taken as part of calibration and testing before the science phase of the mission begins. ESA/DPAC/Airbus DS
... Home Observing Solar Fest and Saros 120 with Amateur Astronomers Association of NY ? the eclipses of Jan. 24, 1925 and March 20, 2015! ... Lecture Series 2014-2015 . ... This Month's Sky - March 2015 . ... Jan. ... Observing Resources for Amateur Astronomers - Part 1: Beginning Observers . ... A History of the First Forty Years of the Amateur Astronomers Association . ... Amateur Astronomers Medal . ... 2016 Amateur Astronomers Association of New York Designed by Press Customizr Powered by . ...
Expedia.com is updating your itinerary. Please wait. searching Need to change your flight? Make changes *online* and save! ... Use the itinerary assistance e-mail form . San Juan, Puerto Rico (Change name ) *Your itinerary has changed.* ... BOOKED ITEMS* *Cost* *Status* *Options* Flight: Orlando -- San Juan $384.50 *Confirmed* Change/Cancel flight Add a hotel Add a car *Booked items* *Flight:* Orlando to San Juan back to top *E-Ticket purchase has been confirmed by the airline.* ...
... This oral history interview is being conducted with Sean O?Keefe in Washington, DC, for the NASA Headquarters Oral History Project. ... One of the first exercises that we conducted early in my tenure was to assemble all the Center Directors, the Associate Administrators, and the leaders of the Agency, and asked them each to define the Agency?s mission objectives. ... NASA is one of the agencies that really helps our society understand this imperative for national technical excellence. ... I found...
... X-ray hardness rates show that 39 per cent of the sources are highly obscured, NH > 1022 cm-2 , in agreement with the 37 per cent of type-2 AGNs found in our sample based on their optical classification. ... X-ray absorption should typically correlate with optical AGN type. ... 3.3 X-ray/optical flux ratio The X-ray/optical (X/O) flux ratio is a redshift dependent quantity for obscured AGN, given that the k-correction is negative in the optical band and positive for the X-rays (Comastri et al. ...
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Ссылки http://hea-www.harvard.edu/~pgreen/Papers/Kalfountzou2014.pdf -- 1418.3 Кб -- 02.10.2015 Похожие документы
... The guest lecture on Tuesday, October 11 will continue the innovative Different faces of Mars, imaged during the Sept 2003 opposition. space hardware theme being developed by Program RAP photos, using ST-10XME CCD camera with Takahashi FS-128 Chair Ken Kremer. The renowned aerospace engineering writer Craig Covault, senior edifor club members and public at the WC Observatory, with a tor and writer for Aviation Week and Space Technology Magazine, focus on Mars viewing plus other deep sky phenomena. ...
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Ссылки http://www.princetonastronomy.org/newsletters/10_2005sidereal.pdf -- 437.2 Кб -- 08.10.2005 Похожие документы
# # List of USB ID's # # Maintained by Stephen J. Gowdy # If you have any new entries, send them to the maintainer. # Send entries as patches (diff -u old new). # The latest version can be obtained from # http://www.linux-usb.org/usb.ids # # $Id: usb.ids,v 1.374 2009/01/10 08:11:02 gowdy Exp $ # # Vendors, devices and interfaces. Please keep sorted. # Syntax: # vendor vendor_name # device device_name COM RS232 Adapter 6370 ViewMate Desktop Mouse CC2201 6560 CY7C65640 USB-2.0 "TetraHub" 6830 CY7C68300A