celestial equatorial coordinate system Σ(α, δ) in astronomy, polar distance (PD) is an angular distance of a celestial object on its meridian measured from...

Polar distance may refer to: Polar distance (astronomy), an astronomical term associated with the celestial equatorial coordinate system Σ(α, δ)ellipse...

nominal value unless the polar radius is explicitly required.: 4  The nominal radius serves as a unit of length for astronomy. (The notation is defined...

complexity. The form of the aurora, occurring within bands around both polar regions, is also dependent on the amount of acceleration imparted to the...

plane). The radial distance from the fixed point of origin is also called the radius, or radial line, or radial coordinate. The polar angle may be called...

straight wire, accretion disks in astronomy, and so on. They are sometimes called "cylindrical polar coordinates" and "polar cylindrical coordinates", and...

Astronomy is a natural science that studies celestial objects and the phenomena that occur in the cosmos. It uses mathematics, physics, and chemistry...

Improved value for the distance from the earth observed (GR test). Rotational period, libration, surface mapping, esp. of polar regions. Venus - first...

to distance measurements Celestial navigation — determining a ship's position using astronomical observations Satellite geodesy Spherical astronomy Space...

though still at a distance of several degrees, in the early medieval period, and numerous names referring to this characteristic as polar star have been...

The polar bear (Ursus maritimus) is a large bear native to the Arctic and nearby areas. It is closely related to the brown bear, and the two species can...

this type of projection is a polar projection which shows all meridians (lines of longitude) as straight, with distances from the pole represented correctly...

system Planetary coordinate system Galactic coordinate system Polar distance Spherical astronomy Star position Nautical Almanac Office, U.S. Naval Observatory;...

Smartphone into an Astronomy Toolbox with Mobile Apps". Space.com. June 2, 2017. Archived from the original on April 17, 2023. "Daylight Polar Alignment Made...

list (link) Astronomy Picture of the Day Polar Ring Galaxy NGC 4650A - May 10, 1999 Polar Ring Galaxy NGC 2685 - 2007 February 16 Polar Ring Galaxy NGC...

Polar alignment is the act of aligning the rotational axis of a telescope's equatorial mount or a sundial's gnomon with a celestial pole to parallel Earth's...

in the signed range -180° to +180°. The concept is used in navigation, astronomy, engineering, mapping, mining, and ballistics. The word azimuth is used...

In astronomy, axial precession is a gravity-induced, slow, and continuous change in the orientation of an astronomical body's rotational axis. In the...

distance to Andromeda − Astronomy magazine article Andromeda Galaxy at SolStation.com Andromeda Galaxy at The Encyclopedia of Astrobiology, Astronomy...

of astronomy is a list of definitions of terms and concepts relevant to astronomy and cosmology, their sub-disciplines, and related fields. Astronomy is...

English, Jayanne (13 September 2023). "NGC 4632: Galaxy with a Hidden Polar Ring". Astronomy Picture of the Day. ASD at NASA / GSFC, NASA Science Activation...

for the Southern Hemisphere. The time of actual sunset is defined in astronomy as two minutes before the upper limb of the Sun disappears below the horizon...

} In astronomy these extreme points are called apsides. The semi-minor axis of an ellipse is the geometric mean of these distances: b = r max r...

of astronomy focuses on the contributions civilizations have made to further their understanding of the universe beyond earth's atmosphere. Astronomy is...

astronomical research since antiquity. The Sun orbits the Galactic Center at a distance of 24,000 to 28,000 light-years. From Earth, it is 1 astronomical unit...

systems add actual distance as the Z axis to the equatorial, ecliptic, and galactic coordinate systems used in spherical astronomy. An example of Earth-centered...

Brice-Bennett, Carol (1999). "[Review] The Arctic sky: Inuit astronomy, star lore, and legend". Polar Record. 35 (195): 354–355. doi:10.1017/s0032247400015783...

water, ammonia, and methane in a supercritical phase of matter, which astronomy calls "ice" or volatiles. The planet's atmosphere has a complex layered...

is often given in the spherical polar coordinate system of right ascension and declination, together with the distance from the origin if applicable. Some...

at the equator. Its equatorial radius is more than 10% larger than the polar radius: 60,268 km versus 54,364 km (37,449 mi versus 33,780 mi). Jupiter...