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... In polar coordinates, the point P is defined by its distance r from the origin O (see drawing) and by its polar angle ("azimuth" on a map) between the x-axis and the "radius" r = OA, measured counter-clockwise. ... When one or both are negative , the angle f is larger than 90 degrees, and such angles never appears in any right-angled triangle. ... There is a simple solution , though: use the above equations to re-define sin f and cos f for such larger angles! ... But it also works for larger angles....

Please enter the lightcurve file name and period search parameters: . Lightcurve file: . ... Apply the Heliocentric correction and convert all dates to Terrestrial Time (TT)? ... Also, the Heliocentric correction cannot be applied to such lightcurves. ... This period search service is also available at the mirror sites: Mirror 1 , Mirror 2 , Mirror 3 , Mirror 4 . You may download the latest source code distribution and install the period search service at your own web server. ...

RELATIVE SUNSPOT NUMBERS Description of Data from SGD Explanation of Data Reports: Relative Sunspot Numbers -- The relative sunspot number is an index of the activity of the entire visible disk of the Sun. ... The provisional daily Zurich relative sunspot numbers, Rz, were based upon observations made at Zurich and its two branch stations in Arosa and Locarno and communicated by M. Waldmeier of the Swiss Federal Observatory. ... This indicates the uncertainty above and below the predicted number. ...

THE RELATIVE MONTHLY MEAN SUNSPOT NUMBER ON JULY 2011 HAS MADE Wjuly =43.9, THAT GIVES FOR 25 MONTH (2011, JANUARY) DEVELOPMENT CURRENT 24 CYCLES OF SOLAR ACTIVITY THE SMOOTHED MONTHLY MEAN SUNSPOT NUMBER W*jan. ... FLARE ACTIVITY WAS AT HIGH LEVEL ON JULY, 30th, WHEN IN SUNSPOT GROUP AR11261 (N16L330, Sp=350 m.v.h) THE LARGE PULSE SOLAR FLARE OF X-RAY CLASS М9.3 WAS OCCURENCED, AT THE AVERAGE LEVEL - ON JULY, 27th, OTHER DAYS - ON A LOW LEVEL. ...

I/146 Positions and Proper Motions (Roeser+ 1988) ================================================================================ Catalogue of Positions and Proper Motions Roeser S., Bastian U. =1988A .. ... 449R ================================================================================ ADC_Keywords: Positional data; Proper motions Description: PPM North gives J2000 positions and proper motions of 181,731 stars north of -2.5 degrees declination. ... The mean epoch is near 1931. ...

slitless -- Extract a spectrum from a direct/GRISM image pair slitless image grism output PARAMETERS . ... A two dimensional direct image to be used to select an object. grism . A two dimensional GRISM image containing slitless spectra of objects present in the direct image. output . ... Toggle whether or not a background estimate is subtracted from the extracted object spectrum. mingood = INDEF . Pixels of the grism image with values smaller than this are ignored. maxgood = INDEF . ...

Pulkovo Photographic Plate Database . To find a certain plate, type its number, choose instrument and click button FIND Instrument: Normal Astrograph 26-inch refractor Plate number: . To find plates with a certain sky area: choose instrument, type coordinates (R.A. and Dec.) of the center of this area, type radius of this area, type (optionally) names of required objects, and click button FIND . ...

Contents. planet: 5 - Jupiter satellites: J1 - Io : 10, J3 - Ganymede : 15, J4 - Callisto : 6 total number: 31 type: relative dates: 1997-1997 observatory: see observatories list in the relevant article. ... Emelianov N. V., Vashkovjak S. N. (2009) Astrometric results of the observations of the mutual occultations and eclipses of the Galilean satellites of Jupiter in 1997. ... Position angle A in degrees (topocentric for mutual occultation or heliocentric for mutual eclipse) 10. ...

Scale-heights of the Galactic disk subsytems with different ages and metallicities . V.Marsakov & Yu. ... It is based on the fact, that all stars cross the disk plane several times during their Galactic orbital period. ... We have used our representative sample of nearby disk F2-G2 stars Marsakov & Shevelev (1995) in which fundamental stellar parameters was determined on the basis of published date on uvby-photometry, proper motion and radial velocities. ... Marsakov V.A., Shevelev Yu.G. Bull. ...

When using a large number of Virtual Hosts, Apache may run out of available file descriptors (sometimes called file handles if each Virtual Host specifies different log files. ... Unix operating systems limit the number of file descriptors that may be used by a process; the limit is typically 64, and may usually be increased up to a large hard-limit. ... If you system falls into 1 or 2 (above), then increase the file descriptor limit before starting Apache, using a script like #!/bin/sh . ...

. Произведение и частное двух чисел . число A: число B: .

DSS Mirror Archive at SAI MSU Search Position in the form "ra,dec" where ra and dec are given in decimal degrees in the ICRS coordinate system. ... ALL GRAPHIC METADATA image/fits image/jpeg . Field name Survey Observation midpoint as Modifed Julian Date RA of image center Dec of image center Number of axes Image size Image scale for each axes Bandpass CD matrix Reference pixel Reference pixel Projection Coordinate system reference frame Image format Image URL ...

... Термин "number" . ... azimuthal quantum number : . см. orbital quantum number . Bessel's day numbers : . ... day numbers : . ... effective quantum number : . эффективное квантовое число . ... independent day numbers : . ... inner quantum number : . ... magnetic quantum number : . ... molecular quantum number : . ... principal quantum number : . ... quantum number : . ... radial quantum number : . ... spin quantum number : . ... total quantum number : . ... vibrational quantum number : . ...

... Данная книга поможет вашему ребенку сделать первые шаги в изучении английских слов. ... The Number Game is an easy and effective way of introducing students to the world of numbers. The Teacher's Guide included contains suggestions for a variety of games and language activities to play time and time again. 100 cards with the numbers in written and digit format 36 bingo cards Teacher's Guide Размер карт с числами: 9 см х 6,5 см. ...

... Department Number . ... Astro Space Center . ... Telephone Number . 7(495) 333 3366 . FAX Number . 7(495) 333 2378 . ... amalin@lukash.asc.rssi.ru . ...

... Exposure Time Calculator (ETC) . Survey processing . ... VISTA is a 4-m class wide field survey telescope for the southern hemisphere, equipped with a near infrared camera (1.65 degree diameter field of view at VISTA's nominal pixel size) containing 67 million pixels of mean size 0.34 arcsec and available broad band filters at Z,Y,J,H,K s and a narrow band filter at 1.18 micron. A wide field visible camera, if constructed, could also be used on VISTA. ... Tile . ... ESO VISTA Public Surveys . ...

Общая Астрономическая Конференция > Практика > Астрономические наблюдения > Звезда рядом с Венерой . ... Просмотр полной версии : Звезда рядом с Венерой . ... Если посмотреть в SkyMap, получается, что около 2 ч. Московского летнего времени Венера проходила примерно в 0.5' от переменной звезды TV Gem. ... Julian day number 2452125.41667) . ... Names and Catalog Numbers . ... PPM number: PPM 95588 . ... Tycho Catalog Data . ... RA: 0.0068 arcsec . ... Number of accepted data points: 106 . ...

Вы находитесь здесь: Каталоги Подключение каталогов к SIMFOV . ... Каталоги для программ-планетариев . ... Для подключения нового каталога, прежде всего, необходимо создать текстовый файл , содержащий по одной строке, на объект, оканчивающейся двухбайтовым символом Enter (если только таковой файл отсутствует). ... В настоящий момент звездная величина в каталогах типа OTHERS программой SIMFOV не используется, но выдавать ее можно из файла *.Dat , включив звездную величину в формат выходной информации. ...

... This is a partial list of the Extragalactic Novae discovered in 2002. Current Novae can be found on the main page . Nova NGC 2403 2002 , ATEL 1638 , discovered 2002/12/30.124 by K. Hornoch . Found in NGC 2403 at R.A. = 07h37m38s.36, Decl. ... Nova M31 2002 6 , IAUC 7970 discovered 2002/08/04.13 by K. Hornoch . ... Nova M31 2002 5 , IAUC 7937 discovered 2002/07/22.5 by LOTOSS . ... Nova M31 2002 4 , IAUC 7937 discovered 2002/07/20.5 by LOTOSS ; Observatory G. Colombo . ...