Search results
Results from the WOW.Com Content Network
Right ascension is measured eastward up to 24 h along the celestial equator from the primary direction. Right ascension (abbreviated RA; symbol α) is the angular distance of a particular point measured eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point in question above the Earth. [1]
Model of the equatorial coordinate system. Declination (vertical arcs, degrees) and hour angle (horizontal arcs, hours) is shown. For hour angle, right ascension (horizontal arcs, degrees) can be used as an alternative. The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.
For geocentric orbits, Earth's equatorial plane as the reference plane, and the First Point of Aries (FPA) as the origin of longitude. In this case, the longitude is also called the right ascension of the ascending node (RAAN). The angle is measured eastwards (or, as seen from the north, counterclockwise) from the FPA to the node.
The term Right Ascension took its name from early northern hemisphere observers for whom "ascending stars" were on the east or right hand side. In the southern hemisphere the east is on the left when an equatorial mount is aligned on the south pole. Many Right Ascension setting circles therefore carry two sets of numbers, one showing the value ...
Equatorial Guinea, [a] officially the Republic of Equatorial Guinea, [b] is a country on the west coast of Central Africa, with an area of 28,000 square kilometres (11,000 sq mi). Formerly the colony of Spanish Guinea , its post-independence name refers to its location near both the Equator and in the African region of Guinea .
In the equatorial coordinate system, the right ascension coordinates of these borders lie between 11 h 56.13 m and 12 h 57.45 m, while the declination coordinates are between −55.68° and −64.70°. [17] Its totality figures at least part of the year south of the 25th parallel north. [18] [b] In tropical regions Crux can be seen in the sky ...
In the equatorial coordinate system, the right ascension coordinates of these borders lie between 14 h 17 m 48.0635 s and 16 h 08 m 36.6735 s, while the declination coordinates are between −29.83° and −55.58°. [10] The whole constellation is visible to observers south of latitude 34°N. [a]
Pico Basilé (formerly Pico de Santa Isabel or Clarence Peak), [2] located on the island of Bioko, is the tallest mountain of Equatorial Guinea.With an elevation of 9,878 ft (3,011 m), it is the summit of the largest and highest of three overlapping basaltic shield volcanoes which form the island.