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Polaris

Parent Category: Stars
Polaris is Earth's current northern pole star, and thus is commonly referred to as the North Star. Historically, Polaris was used by sailors and navigators to determine their current latitude while crossing oceans. Please place all questions about Polaris, the brightest star in the constellation Ursa Minor, into this category.
-3.64 is the absolute magnitude of Polaris.
If it's important to anybody, that's because it's a relativelybright star that always remains more or less in the same position,as seen by us.
It is useful because it is directly above Earth's north pole so ifyou were traveling north, you would know what to follow
Polaris, also known as Alpha Ursae Minoris, will become the NorthStar again in 27,800 AD. The cycle takes about 25,770 years tocomplete. Polaris is the current North Star. Polaris replacedThuban around the first millennium BC. It will become closest tothe celestial north pole around the year 2100...
Within 1/2 degree of 70N. Polaris is not EXACTLY above the North Pole; it is about 0.6 degrees from it.
Back in the old times in exploring through seas Navigators usePolaris to know where is north and to find out where they are justlike using constellations.
That's one way to say it. Another way is that the earth's axis points at Polaris. That way, you don't have to deal with the subject of "up" and "down", which doesn't really have any meaning once you leave the earth's surface.
The apparent change in the position of the zodiac signs is caused by a natural phenomenon known as precession . Every 26,000 years, the Earth's axis traces out an apparent set of circles across the sky (one in each hemisphere). Because of this long-term motion, the pole star appears to shift:...
Polaris (North Star or Pole Star) has an apparent magnitude of +1.97 (Variable)
North Star == Answer ==\nThe name of the pole star is polaris. Polaris, also called the "North Star".
It is at the tail end of the little dipper, which is part of Ursa Minor, the little bear.(:
The star Polaris appears to be very close to a line extending along the axis of the Earth's rotation. (The difference is about 0.6 degrees.) Within about a half-degree, then, the apparent angular elevation of Polaris is equal to your latitude in the northern hemisphere. Seen from the southern...
Approximately 49 degrees. Polaris is almost, but not quite , directly above the north pole of the Earth; it is off by about 0.6 degrees. For many purposes, (and in the northern hemisphere only!) you can read your latitude by measuring the angular altitude of Polaris above the horizon. With a simple...
Approximately 89.5 degrees. Polaris is almost, but not quite , directly above the north pole of the Earth; it is off by about 0.6 degrees. For many purposes, (and in the northern hemisphere only!) you can read your latitude by measuring the angular altitude of Polaris above the horizon. With a...
Strictly speaking, Ursa Major does not circle Polaris at all. The stars in the sky are "fixed", and do not move around. (This isn't exactly true; every star has its own "proper motion" across the heavens, but the motion is only observable on a scale of several CENTURIES. We don't live long enough to...
no. Polaris is not inside the southern cross.
If Polaris appears 60° above the northern horizon, then you are pretty near 60° north latitude. If you're on the equator ... 0° north latitude ... then Polaris is on the horizon ... 0° altitude. If you're at the north pole ... 90° north latitude ... then Polaris is over your...
If you're on the equator, then you probably can't see Polaris at all. From that location, Polaris can never be more than about 2/3 of a degree above the northern horizon.
Of the stars listed, Alpha Centauri is the nearest star to Earth. But there is one closer; Proxima Centauri is a tiny, dim red dwarf star; "near" Alpha Centauri only by astronomical standards, it is still 3 light MONTHS away. But that's still 3 light months closer to the Sun.
No one discovered Polaris. It has been in the night sky since humans first walked the Earth.
02 h 31 m 48.7 s , +89° 15′ 51 "
No. Nor does any other star, unless there is an unknown companion to our Sun, like the hypothetical "Nemesis".\n No. Nor does any other star, unless there is an unknown companion to our Sun, like the hypothetical "Nemesis".\n No. Nor does any other star, unless there is an unknown companion to our...
No. Is located almost directly over the North pole.
No. Ursa Major is often used as a way to find it, as part of it points towards it, but it is not actually in Ursa Major. It is in fact in Ursa Minor.
Polaris or Alpha Ursa Minoris is actually a multi star system of 3 to 5 known stars. Polaris A is a yellowish white giant or supergiant star approx 6 solar masses in mass. Polaris Aa is yellowish white dwarf star in close association with Polaris A (18.5 AU). Polaris B is a yellowish white star...
Antares is a red supergiant star, therefore, its red. Supergiants are aging stars about to run out of fuel. . Comparison of Antares with Our Sun . Diameter Miles. Temperature °Fahrenheit. Visual Magnitude*. Absolute Magnitude**. Density Sun = 1. Mass Sun = 1. Sun. 885,000. 9900°. ...
Polaris just happens to be positioned almost (but not quite exactly!) above the North Pole. So if you are facing Polaris, you are facing almost exactly north. If you measure the altitude of Polaris as an angle above the horizon, you can read your latitude directly on your sextant. It isn't exact;...
A star that happens to be near the current north pole of the sky. .
the polaris is much larger than sun because polaris is a super giant star while sun is only a dwarf
If you are standing at latitude 58 degrees north, then the North Celestial Pole is 58 degrees above your northern horizon. Polaris describes a small circle around the North Celestial Pole, about 0.69 degrees away from it. So Polaris' altitude varies between 57.31 and 58.69 degrees.
First you need to find the asterism the "Big Dipper" or the "Plough". This is one of the easiest asterisms to find. The create a line from the 2 right most stars and keep following this line up. The next bright star on this line is Polaris.
Let's say you're right on the line where your latitude is 45 degrees north ... roughly the line through Roseville, Maplewood, North St. Paul, and Lake Elmo. Then Polaris is always within about 1/2 a degree of 45 degrees above the northern horizon. It's your north latitude, within 1/2 degree...
Through a temporary and fortuitous coincidence, Polaris happens to be aligned above the north pole of the axis of the Earth's rotation. For early navigators in the past several hundred years, this has made it easy to determine direction and to establish their latitude. This is a TEMPORARY...
Polaris owes most of its fame and usefulness to its position about 0.6 degrees away from being directly above the North Pole of the Earth. Polaris is actually a fairly dim star; it is the faintest of the 59 standard navigational stars.
Polaris is the name of the north pole star. It isn't EXACTLY above the North Pole, but pretty close; only about one-half a degree off. If you were to watch Polaris through the night, you wouldn't notice any movement, but in a long-time-exposure photo, you can see that Polaris makes a TINY circle...
Polaris is in Ursa Minor (Little Dipper).
Yes, you can see Polaris all year... it's the North Star.
You would be at or very close to the north pole.
Polaris, also known as the North Star, is a star.. \n
It is not visible during the day, of course, or when it's obscured by clouds. Also, it's not visible south of the equator, and may be below the horizon parts of the year from places south of the Tropic of Cancer. The reason it's "always visible" is because it's nearly overhead at the north pole...
More or less. Polaris is less than one degree from the north pole of the sky (i.e., the extension of Earth's axis). This situation changes over time: due to precession, the alignment of Earth's axis gradually changes.
Polaris is the north star, meaning it is always visible up in the sky if you live above the equator.
the waste of hades. or the waste of Poseidon
Correct. Polaris is a star, not a planet.
Polaris, or North Star is a supergiant about six times as large as our Sun. Therefore the majority of stars will be smaller.
No. Polaris is a system of three stars, all of which are largerthan the sun.
Because the Earth's axis of rotation currently points very near the star Polaris. This is a coincidence of timing; if we were living several thousand years ago, then it would be Vega that appeared to be fixed in the night sky (the Earth actually wobbles very slowly as it spins, taking about 23,000...
Polaris is near the sky's north pole - the axis around which the sky seems to move around us (the extension of Earth's axis).
Polaris is in the constellation Small Bear (Ursa Minor). I didn't check whether it actually is the brightest star in that constellation.
If the man is standing on 40 0 North, then he can see the polaris exactly at an angle of 40 0 in the north direction.
Polaris does have apparent movement, but it is slight. Now, the angular distance of Polaris to true north is less than 1 degree). So, the other stars appear to be rotating around Polaris as the earth rotates throught he night. However, the earth wobbles around its rotational axis, resulting in true...
Because the earth's north pole happens to point [very close] to Polaris.
Polaris is at declination 89.3 degrees north, so it is 0.7 degrees away from the north celestial pole. However, Earth's axis of rotation is not fixed; the Earth wobbles like a gyroscope, with a period of about 23,000 years.
The distance from earth to Polaris is estimated at 430 light years, or roughly 2,527,841,000,000,000 miles (rounded to the nearest billion miles).
Fairbanks, Arkansas is located at latitude 35.380935N, so Polaris is roughly 35.380935 degrees (plus or minus 0.73 degrees) above the horizon.
The angle of Polaris above the horizon is the same as the latitude from which you are trying to measure it. Hollywood Florida has a latitude of ~26 degrees, so Polaris is 26 degrees above the northern horizon.
Jackson Square in the French Quarter is at latitude 29.95 degrees north. So Polaris would be between 30.6 degrees and 29.3 degrees, depending on the time of night. But Polaris is a dim star; you probably wouldn't be able to see it because of the city lights. Polaris is not EXACTLY above the North...
Polaris is about 7.5 times larger than the Sun.
It is not the brightest star in the sky, as many people think. It's important because it marks, roughly, the "North Pole of the sky".
Polaris is also known as the "North Star" or the "pole Star". It is a bright star, positioned almost directly above the nortern end of the earth's axis of rotation. It is the end of the Little Dippers Handle.
but it does as earth's axis tilts.
Polaris, also known as the north star or pole star.
With a diameter of 1377648 km of the Sun vs the diameter of 12756 km of Earth, The Sun is 108 times bigger than the Earth. (See related link "Planet Size Comparation", select Sun and press "Compare") .
Polaris always sits within about 1/2 degree from the point in the sky that's the same angle above the northern horizon as your latitude. For example, if you're standing at the north pole, the point is directly over your head, and if you're anywhere on the equator, the point is on the horizon...
As the night progresses, Polaris appears to stand still, and all the other stars turn around it in a counterclockwise direction. And to be perfectly honest, Polaris itself isn't still; it's making a TINY circle in the sky. It's so tiny - about 0.7 degrees off the precise north pole - that you...
it was the north star it lead the wise men to Jesus
Polaris. It is a star, the others are constellations.
They're always within about 1 / 3 degree of each other ... close enough that they're said to be roughly equal.
As the North Star, it was important in navigation. However, Polaris, despite the name, is only occasionally the North Star, due to precession of the equinoxes. When the great pyramids were aligned, the North Star was Thuban, in Draco; in some tens of thousands of years, it will be Vega. Also, to...
No. In fact, Polaris is the dimmest of the 57 stars commonly used for celestial navigation. Except for the happy coincidence that Polaris perches almost precisely above the Earth's north pole, nobody would think anything about it. In fact, we're fortunate that the skies around the north pole are...
The two "pointer" stars at the lip edge of the Big Dipper are Merak and Dubhe. Follow the line between them and extend it about 7 times their separation; the only even vaguely bright star there is Polaris.
No, Venus is a planet in orbit around the sun as is Earth. Polaris is a star and thousands of light years away.
Polaris is at its upper culmination once every 23 hours 56 minutes 4 seconds . (rounded) It happens when the local celestial meridian is equal to Polaris' right ascension, and that's a different time every day of the year. Probably your best source would be the staff of a local planetarium,...
Polaris' "elevation" ... its angle above your horizon ... is veryclose to the north latitude of the place where you're located when you seeit. So, as your north latitide increases, the elevation of Polaris alsoincreases. And as you travel south, the elevation of Polaris decreases, untilit's on your...
It would be directly over your head (at the 'zenith'.)
The North star will be 75 degrees above the horizon. Whatever degree you are at latitude, the North star will be the same degrees up. So at the north pole (90 degrees north), the star will be at the zenith (straight up). While at the equator (0 degrees north) the star will be at the horizon.
Like all stars, Polaris is made of mostly Hydrogen, but since polaris is a red giant it has a considerable ammount of Helium, as well as Carbon, Oxygen, and a number of other elements deep in it's core.
Not even close. If it weren't for the happy coincidence of its position almost above the north pole, nobody would notice it at all. Of the 58 stars commonly used for navigation, it is the dimmest.