Since Vega star has a celestial latitude of 40 degrees North and rises north of
ID: 236994 • Letter: S
Question
Since Vega star has a celestial latitude of 40 degrees North and rises north of east at the zenith with an altitude of 90 degrees then what could you say about these stars. Considering Vega's location which is at the zenith? Fill out for rising points either north of east, south of east, at due east or does not rise. Fill out for meridian location either north of zenith, south of zenith or at zenith.
a) Orion's Belt- celestial latitude 0 degrees. Rises at? On meridian at? Altitude in degrees? b) Antares- celestial latitude 25 degrees South. Rises at? On meridian at? Altitude in degrees? c) Polaris- celestial latitude 90 degrees North. Rises at? On meridian at? Altitude in degrees? d) Hokule's- celestial latitude 19 degrees North. Rises at? On merdian at? Altitude in degrees? e) Sirius- celesital latitude 17 degrees south. Rises at? On meridian at? Altitude in degrees?
Explanation / Answer
Vega is the brightest star of constellation Lyra in the northern hemisphere. It has a magnitude of about 0.03. It is also nearer to the sun with distance of about 25 light years only. Spectral class of Vega is A9 (white) and luminosity class is V i.e. Main sequence. Due to the precession of equinoxes, Vega will become the north star by the year 14,000 AD.
This star is surrounded by disk of dust particles. This star rotates quickly once in every 12 and half hours as compared to the sun's rotation period of about 28 days. Due to its fast rotation it bulges considerably at the equator. Due to its higher mass this star quickly burns its fuels and it will become a red giant star only about half a billion years.
Orion belt is visible in both northern and southern hemisphere. It can be seen in the northern hemisphere in from late autumn to early spring where as in southern hemisphere it can seen in summer months. The constellation consist mainly of bright supergiant blue stars. Orion rises in east in northern hemisphere and sets in the west in December.
Antares is the brightest reddish star in the constellation of Scorpio visible in the summer. These stars burn their fuel quickly over a period of few million years. Antares rises at dusk and sets at dawn and is seen at the equator
Polaris: is the brightest star of the constellation of Ursa Minor. Since it is very close to the north celestial pole it is currently the north star.
Sirius: brightest star in the earth's night sky and with apparent magnitude of about -1.46. because of its nearness to the earth and its intrinsic luminosity it appears bright.