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They are the celestial equivalent of longitude and latitude. If you are given the RSA and Dec of an object, you will be able dot find it on a chart. Or if you have a telescope that is computerised, you can input the coordinates and the telescope should go there automatically.
Wiki User
∙ 8y ago
Wiki User
∙ 8y agoThose are numbers used as coordinates - just as latitude and longitude are used as coordinates to specify a point on the Earth's surface.
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What do astronomers use to plot positions in the sky?
Positions in the sky are measured by angles. The simplest is the altitude, the angle above the horizon, and the azimuth, the direction measured running eastwards from north. There are other systems but always two coordinates are needed to specify a direction. Star positions are measured with a transit-circle, which always faces exactly south, and the stars are timed as they cross the meridian. The altitude gives the star's declination in degrees and the time gives the right-ascension in hours and minutes after a standard direction known as the First Point of Aries has passed.
What is the declination of polaris from Glasgow?
The "declination" of a star is its position in the sky on the celestial sphere, which stays the same for any observer.You may be thinking about how high Polaris is above the horizon.That's its "altitude".The altitude of Polaris always equals the latitude of the observer.That's been a great help to seafarers for centuries.Polaris has a declination of nearly 90 degrees.From Glasgow, its altitude in the northern sky is equal to the latitude of Glasgow.The latitude of Glasgow is about 55.9 degrees.So, the altitude of Polaris in Glasgow is about 55.9 degrees.
Why don't we use visible-wavelength telescopes to locate neutron stars?
A neutron star emits most of its energy at higher frequencies.
Is Disney buying the Star Wars rights a bad idea?
Yes, it was the right idea for Disney to buy the star.
Where is never land located?
Second star to the right and straight on till morning
What are the right ascension and declination of the star Spica in the constellation Virgo?
The right ascension of the star Spica in the Virgo constellation is 1900 13 hours and 25 minutes and the declination is 1900 -10.38'.Spica is the largest and brightest star in Virgo.
What are the right ascension and declination of the star alderbaran in the constellation Taurus?
According to Wikipedia: Right ascension 04h 35m 55.239s, declination +16° 30′ 33.49″. The data corresponds to the epoch 2000.0.
Does earth's revolution around the sun change both the right ascension and the declination of a star?
yes
What is the right ascension and declination of the brightest star in the Octans constellation?
The brightest star is v Oct with an RA of 21h 41m 28.47s and declination of −77° 23′ 22.1″
What are the right ascension and declination of the star Sirius in the constellation Canis Major?
right ascensition and decliation orion in 2012
How do you measure the location of a star?
Using a method similar to latitude and longitude on the surface of the earth. The corresponding terms are declination and right ascension.
What star has a right ascension of 14h 05m and a declination of 65 degrees?
This is best answered by finding a star atlas like Norton's or the Sky Atlas 2000.0.
What is the longitude on a star map for Auriga?
Indicating the position of a celestial object is similar to latitude latitude and longitude. But it is called right ascension and declination.
Blank is how far around the map the star is?
Declination, which is measured as an angle, north is positive and south is negative. The declination of a star etc. is also the latitude at which the star passes overhead.
When will a star with a right ascension of 2.0 hours rise?
That depends on the date, since the sun itself moves through the entire range of RA during the year. It also depends on the star's declination. Viewed from the northern hemisphere, for example, the greater a star's declination, the earlier it rises, and if its declination is greater than the complement of the observer's latitude, then it never sets.
Where is Canopus located?
Canopus is located in the constellation Carina in the southern celestial hemisphere. It is the second brightest star in the night sky after Sirius.
How are right ascension an declination similar to latitude an longitude?
Right Ascension in space is equivalent to Longitude on Earth but it is measured in hours minutes and seconds rather than degrees, minutes and seconds. 1 hour of RA is equivalent to 15° of longitude. Declination in Space is equivalent to Latitude on Earth. Both are measure in degrees, minutes and seconds. Declination is measured from the Celestial Equator, + being north and - being south, just like Latitude.
