The angle measured at the observer’s meridian from the elevated pole,clockwise or counterclockwise up to 180°,to the vertical circle of the body is the().
时间:2022-11-08
A correction for augmentation is included in the Nautical Almanac corrections for().
时间:2022-11-05
A group of stars which appear close together and form a striking configuration such as a person or animal is a().
时间:2022-11-02
A star that suddenly becomes several magnitudes brighter and then gradually fades is a().
时间:2022-10-28
In working out a local apparent noon sight for your latitude,you subtract the Ho from 90°. The 90°represents the angular distance from().
时间:2022-10-26
A sidereal day is approximately how much shorter than a solar day?()
In order for a star to be used for a sight at lower transit,the star must().
时间:2022-10-25
Elongation becomes zero at().
时间:2022-10-19
Capella is found in what constellation? ()
A first magnitude star is().
时间:2022-10-18
Altair is found in what constellation?()
时间:2022-10-12
Diurnal aberration is due to().
时间:2022-10-10
A variable star is one that().
时间:2022-10-08
In the horizon system of coordinates what is equivalent to the equator on the Earth?().
时间:2022-10-07
A star is observed at lower transit. The line of position derived from this sight is().
时间:2022-10-06