Polaris

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.

1,308 Questions
Astronomy
New Testament
Planetary Science
Polaris

Why is polaris an important star?

Polaris or North Star, is important because at the moment it lies nearly in a direct line with the axis of the Earth's rotation "above" the North Pole - the north celestial pole - Polaris stands almost motionless on the sky, and all the stars of the Northern sky appear to rotate around it. Therefore, it makes an excellent fixed point from which to draw measurements for celestial navigation and for astrometry.

Due to the precession of the equinoxes, Polaris will not always be the pole star. Over tens of thousands of years, changes to the Earth's axis of rotation will cause it to point to other regions of the sky, tracing out a circle over 25,000 years.

212223
Astronomy
Polaris

How far away from Earth is Sirious the star?

8.6 light years

8.6 light years

8.6 light years

8.6 light years

789
Astronomy
Polaris

What is Taurus's location from Polaris?

About ninety degrees. Polaris sits above the north pole and Taurus is one of the constellations that the sun passes in front of, in the plane of the ecliptic. Taurus doesn't really have a position, it's just a group of stars that form a pattern when seen from earth. The individual stars could be millions of light years apart.

272829
Planet Saturn
Big Dipper
Polaris

What is Saturn's period of revolution in days?

Saturn takes 10,759.50 days per orbit.

272829
Planetary Science
Stars
Polaris

How big is the earth compared to the sun?

The Sun is about 108 times larger than the Earth

You could fit about 1,259,712 Earths inside the Sun

232425
Miscellaneous Vehicles
Snowmobiling
Polaris

How do you read Polaris snowmobile model numbers?

i work as an assembly mechanic for a polaris dealer, and all i can say for sure is that the tenth digit of the serial number is the year.... example....3=1993 or 2003

262728
Constellations
Big Dipper
Polaris

What is the dipper that polaris belongs to?

Ursa Minor, (Little Bear), also known as the tail end of the Little Dipper.

252627
Science
Polaris

What is another name for the pole star?

North Star
The name of the pole star is polaris.
Polaris, also called the "North Star".

252627
Planetary Science
Polaris

What is closer to the Earth the Sun or Polaris?

The sun because you can see it much better and it is brighter but Polaris is much smaller and dimmer so the earth is closer.

456
Astronomy
Planetary Science
Polaris

Why Polaris is considered to be a very bright star even though is not a bright star in the earth's sky?

Polaris is a not the brightest star in the sky, but that is because we are very far away from it. If you were to visit Polaris, you would find it would be even brighter than the Sun

232425
Science
Polaris

Why does the pole star not seem to move?

Because they are located straight up from the point of the sky under them. The Earth rotates around this area, so the star in this area is more-or-less stationary.

If you stand under a balloon at a party and turn round and round while looking at it, then relative to your nose (which you might regard as fixed on you) the balloon goes round, but stays above you. Other balloons go around you.

The earth spins on its axis. The pole star is almost exactly above (ie pointed to by) this axis. So most stars appear to go round and round, but the pole star stays where it is. It actually does appear to do a very small circle because it is not precisely pointed to by the axis.
Because it lays on an imaginary line that extends from the axis that we rotate on.

You can simulate this in an experiment within you house or building. All you need is a video camera (or anythig that can record video, like a phone or ipod nano) and someplace with a bunch of lights or other objects on the ceiling or floor.

Take the video camera and look up at the ceiling (or down at the floor) and pick one light to focus on. While standing directly under that light and looking up at it, slowly spin in a circle while continually looking at that light. Hopefully there are other things on the ceiling that also appear in the frame of the movie, like other lights, or that dent that you made when you were rough housing with your friend and a baseball.

After about 30 seconds and several rotations (you don't need to rotate very fast at all), watch the video. You'll see that the light you were focusing on does not move, while all other objects in the sky appear to rotate around that light.

Compared to the Earth, you are the Earth and that light is the pole star.

2nd Answer:

Good answer! . . . . In actual fact, the Pole star, or Polaris, is changing its observed position relative to Earth, but for our lifetimes Polaris does lie (temporarily) on the extended Earth's axis. All the stars are moving relative to Earth, and in several more thousands of years, we may no longer recognize, for example, the Big Dipper and Little Dipper.

Polaris has also been observed by astronomers as moving relative to Earth. Thousands of years ago, Polaris and the other constellations were not where they are now. In thousands of more years, they, along with Polaris, will have moved on in their slow creep across the sky to new places.
pole star appears stationery in the sky and all other constellations appear to revolve around it. It points to geographic north direction and is very useful for sailors in finding directions at night.
There is no apparent movement of the pole star because they are the position points of the north and south pole

192021
Astronomy
Constellations
Polaris

In Which hemispheres can polaris be seen?

Northern hemisphere.

171819
Astronomy
Polaris

The angle of the star Polaris above the northern horizon can be used to determine an observer's?

... lattitude.

... lattitude.

... lattitude.

... lattitude.

345
Astronomy
Planetary Science
Galaxies
Polaris

Why is Polaris called the Pole Star?

Polaris is called the "pole star" because it is, within about 2/3 of a degree, precisely over the north geographic pole of the Earth. For now.

The Earth spins like a gyroscope, and like a gyroscope, is subject to "precession". That means that the Earth's gyroscope makes very large VERY SLOW swings around the sky; swings of about 30 degrees. The precession cycle takes about 28,000 years to complete, so humans haven't had a chance to observe the changes. But in about 15,000 years, the star "Vega" will be the "pole star", and Polaris will be some 3rd magnitude star that nobody pays any attention to.

232425
Earth Sciences
Polaris

At which New york state location is the altitude of polaris closest to forty two degrees?

If you are in Binghamton at the moment, 7:49 pm, 10/14 Polaris is at 41 degrees 57 minutes 21 seconds. I have 42 degrees 5 minutes as the north latiude of Binghamton. If you can move to 42 degrees 4 minutes, you will have an altitude for Polaris of almost exactly 42 degrees. Yes, Polaris does move a little; it is not perfectly in line with the earth's pole.

272829
Astronomy
Polaris

What is Polaris?

Polaris (also known as the North Star, Northern Star or Pole Star) is the brightest star in the constellation Ursa Minor.

It is actually a star system, consisting of a main star and five other smaller companions.

The main star (α UMi A) has a spectral type of F7 meaning it is still on the main sequence, and will be classed as an orange dwarf.

232425
Astronomy
Polaris

Polaris is found in what constellations?

Polaris is found in Ursa Minor.

222324
Astronomy
Polaris

Where on earth would you be if Polaris was at your zenith?

You would be pretty darn close to the north pole.

_______________________

Specifically, you would be within about 40 miles of the north pole. Polaris is about 2/3 of a degree away from being directly above the north pole.

232425
Polaris

Is polaris mainly the north star?

Yes, the name Polaris is used to refer to the North Star. Polaris used to be Thuban, then was Kochab, is now Cynosura and will, one day, be Elrai.

123
Dwarf Planet Pluto
Polaris

How many inches long are the north star to Pluto?

The north star is about 2,550,000,000,000,000 miles from Pluto

In inches, that's about 161,568,000,000,000,000,000 inches

123
Astronomy
Planetary Science
Polaris

Does the star polaris make a revolution around the sun?

No. Nor does any other star, unless there is an unknown companion to our Sun, like the hypothetical "Nemesis".

No. Nor does any other star, unless there is an unknown companion to our Sun, like the hypothetical "Nemesis".

No. Nor does any other star, unless there is an unknown companion to our Sun, like the hypothetical "Nemesis".

No. Nor does any other star, unless there is an unknown companion to our Sun, like the hypothetical "Nemesis".

123
Astronomy
Constellations
Polaris

What constellation is the pole star or North star in?

Orion

123
Astronomy
Motorcycle and ATV Maintenance
Polaris

Distance from polaris to the polaris?

Zero.

Zero.

Zero.

Zero.

123
Astronomy
History of Science
Polaris

When you look at Polaris what direction are you facing?

North.

91011
Constellations
Polaris

What constellation is Polaris in?

It is at the tail end of the little dipper, which is part of Ursa Minor, the little bear.(:

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