Celestial Equator
Related Category: Astronomy: General
see equatorial coordinate system.
More on Celestial Equator ...
Celestial equator
The celestial equator is inclined by ~23.5° to the ecliptic plane.
The celestial equator is the equator of the astronomical sky. It is the projection of the earth's equator onto the celestial sphere. If you are standing on earths equator and look directly overhead you are looking at the celestial equator.
celestial equator The projection of the Earth's equator onto the celestial sphere.
celestial sphere Imaginary sphere surrounding the Earth, to which all objects in the sky were once considered to be attached.
celestial equator: the intersection of the extended plane of the Earth's equator with the celestial sphere.
celestial latitude: see ecliptic latitude.
celestial longitude: see ecliptic longitude.
Celestial equator A projection of the Earth's equator onto the celestial sphere.
Celestial equator- the imaginary line encircling the sky midway between the two celestial poles
Celestial poles- the imaginary points on the sky where Earth's rotation axis, extended infinitely, would touch the imaginary celestial sphere ...
Celestial Equator
An imaginary line around the sky which is directly above the earth's equator.
Celestial Sphere ...
Celestial equator
the intersection of the earth's equatorial plane with the celestial sphere.
Celestial pole
the north and south celestial poles are points on the celestial sphere where earths axis of rotation intersects the celestial sphere.
Celestial equator: An imaginary great circle in the sky drawn concentric to the Earth's equator.
Celestial Equator - The Earth's equator projected onto the celestial sphere.
Celestial Equator - The circle where the Earth's equator, if extended outward into space, would intersect the celestial sphere ...
Celestial Equator - this is just a line that is directly above the Earth's Equator. Like the Earth's equator, the Celestial Equator goes all the way around the Celestial Sphere.
7 : The Celestial Equator ...
divides the night sky into two hemispheres - north and south.
passes though ORION's belt (roughly).
both of the above two answers are correct.
divides the night sky into two hemispheres - east and west.
celestial equator - A great circle on the celestial sphere 90° from the celestial poles; the circle of intersection of the celestial sphere with the plane of the earth's equator.
Celestial Equator
An imaginary line that divides the celestial sphere into a northern and southern hemisphere.
Celestial Poles
The North and South poles of the celestial sphere.
celestial equator
The imaginary line dividing the northern and southern hemispheres of the celestial sphere. Equivalent to the equator on the Earth.
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The celestial equatorial plane and the ecliptic currently intersect in Pisces, not far from the border with Aquarius, and in Virgo, not far from the border with Leo.
The celestial equator runs just north of the Belt of Orion, just south of Pisces and just north of Libra, right around the celestial globe.
Located at the celestial equator, Constellation Aquila, the Eagle, and Constellation Cygnus, the Swan, were hunted by Hercules.
Vocabulary
celestial equator circumpolar latitude longitude meridian North Celestial Pole South Celestial Pole zenith
Review Questions ...
Relative to the celestial equator, the Milky Way passes as far north as the constellation of Cassiopeia and as far south as the constellation of Crux.
An object on the celestial equator has a dec of 0°.
An object at the celestial north pole has a dec of +90°.
An object at the celestial south pole has a dec of âˆ'90°.
(symbol ) Angular distance north or south of the celestial equator; the arc of an hour circle between the celestial equator and a point on the celestial sphere, measured northward or southward from the celestial equator through 90 degrees, ...
parallel of declination A circle of the celestial sphere parallel to the celestial equator. Also called circle of equal declination. See diurnal circle. parallel of latitude 1.
Some 60 degrees below the celestial equator, Crux is well-visible only roughly south of the Tropic of Cancer (a good reason to go to Hawaii). From much of the temperate southern hemisphere, however, the constellation is circumpolar (never setting).
is seen in the morning sky ephemeris a table of data arranged by date; typically tables of the positions of the Sun, Moon, planets and other solar system objects equinox the two points where the ecliptic intersects the celestial equator; ...
In the celestial coordinate system the North and South Celestial Poles are determined by projecting the rotation axis of the Earth to intersect the celestial sphere, which in turn defines a Celestial Equator.
5 degrees to the celestial equator a significant part of the suns motion around the time of the equinoxes is in a north-south direction and less in an east-west direction as compared to apparent movement near the solstices when apparent movement is ...
The point on the ecliptic where the Sun is at its northernmost point above the celestial equator is known as the summer solstice (from the Latin words sol, meaning "sun," and stare, "to stand"). As shown in Figure 1.
(a) Angular distance above (positive) or below (negative) the celestial equator. One of the co-ordinates, with right ascension, that defines the position of a heavenly body. [A84]
(b) Position on the sky in a north-south direction.
Note that, at the celestial equator, there are 15 arc seconds in one second of R.A.
The zero line of RA is the point where the Sun crosses the celestial equator, moving from southern declinations to northern declinations. This occurs around 21 March each year.
In Ming Dynasty, celestial globe at that time was a huge globe, showing with the 28 mansions, celestial equator and ecliptic. But just like many other equipment, none of them survived.
Celestial globe (天é""å"€) in Qing Dynasty ...
Similar to the equator on Earth, we have the celestial equator on the celestial sphere. The ecliptic will intersect the equator with an angle 23.5°. The two intersection points are the vernal equinox and autumnal equinox.
The projection of the Earth's equator onto this sphere is called the celestial equator.
A Dec of 0 degreed points to the "Celestial Equator" just like a latitude of 0 is at the Equator. Similarly, a Dec of +90 degrees points to the "North Celestial Pole" and -90 degrees points to the "South Celestial Pole.
With telescope drive off cause a star at or very near the celestial equator will drift along the centerline web of the micrometer between the fixed and movable webs.
EQUINOX (from the Lat. aequus, equal, and nox, night), a term used to express either the moment at which, or the point at which, the sun apparently crosses the celestial equator.
In the sky, declination (like latitude on the Earth) is measured north and south, starting from 0° at the Celestial Equator which is overhead at the Earth's Equator.
The time when the Sun is at its maximum declination either north or south of the celestial equator. There are two solstices; summer solstice (around 22nd June each year) when the Sun is 23 and a half degrees north of the celestial equator.
The modern constellation sits astride both the Milky Way (and thus the Galactic equator, not shown) and the celestial equator. It is also enclosed on three sides by the bright stars of the Winter Triangle (Sirius, Procyon and Betelgeuse).
Start by aiming your telescope at any star that is within 10 degrees of the celestial equator.
The Eagle (of Zeus); a distinctive constellation on the celestial equator that spreads across many rich fields. Due to a lane of obscuring dust known as the Great Rift, the Milky Way splits in two through this constellation and also through Ophiuchus.
Aquarius streches from the celestial equator to the southern hemisphere: RA=20h40m to RA=0h and DECL=3 degrees to DECL=-24 degrees respectively.
Equinox -- the time of the year (around March 21 and September 23) when the position of the Sun in the sky (following the ecliptic) crosses the celestial equator.
The declination of an object is how many degrees it is north or south of the celestial equator. The other coordinate is called right ascension, and it is measured eastward from a somewhat arbitrary "prime meridian" on the sky.
Lepus is a constellation in the southern hemisphere, lying near the celestial equator. Its name means "hare" in Latin. The constellation was created by the Greek astronomer Ptolemy in the 2nd century.
the alterations of the measured positions of the stars resulting from the movement of the points of intersection of the ecliptic (the plane of the Earth's orbit) and of the celestial equator (the great circle formed in the sky by the projection ...
An intersection of the ecliptic and the celestial equator. The center of the sun is geometrically above and below the horizon for equal lengths of time on the two days of the year when the sun passes the equinoxes; ...
Gallus lay in the Milky Way, south of the celestial equator in the northern part of what is now Puppis. Although a number of astronomers adopted Gallus, it was not shown on the influential charts of Johann Bode.
Return to Obsolete Constellations page ...
The date (near September 22 in the northern hemisphere) when night and day are nearly of the same length and crosses the celestial equator (i.e., 0) moving southward (in the northern hemisphere).
the two times of year when the sun crosses the celestial equator, giving day and night an equal 12-hour length everywhere on Earth
escape velocity
the velocity an object or rocket needs to escape the gravitational clutch of a more massive object ...
The zero point for RA is one of the points where the ecliptic circle intersects the celestial equator circle.
Ophiuchus is a large constellation located around the celestial equator. Its name is Greek language for 'snake-holder', and it is commonly represented as a man grasping the snake that is represented by the constellation Serpens....
the time of year around September 23 when the sun crosses the celestial equator heading south.
averted vision
a technique that uses the more light-sensitive rods in the eye to better see a faint object by looking at it indirectly ...
This December presents the northernmost full Moon till December 27, 2023, standing at a declination of over 28 degrees north of the celestial equator.
On the celestial equator. One of the 3 that make up the "Winter Triangle" (Sirius, Procyon, and Betelgeuse). Although it has the Bayer designation "alpha", it is not as bright as Rigel (Beta Orionis).
Declination is the measure of angular distance of a celestial object above or below the celestial equator and is comparable to latitude. To familiarize yourself with declination, hold out your arm in the direction of the North Star (Polaris).
Definition: declination: A method of establishing a celestial object's location by using the angular distance north or south of the celestial equator. Similar to a latitude designation on the planet Earth.
 See also: Equator, Earth, Sun, Sky, Planet
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