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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.

543 Questions

What is the dipper that polaris belongs to?

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

How would the north star appear to remain still make ocean navigation easier?

The North Pole Star appears to be stationary as the Earth rotates round the axis of North and South Poles. Proof of this is when an an open shutter camera is pointed directly at the Pole Star and left for several hours. The image captured will show that the Pole Star appears almost stationary, while the other stars streak in a circle round it due to the Earth's rotation.

How big is polaris?

Polaris (Alpha Ursae Minoris), also known as North(ern) Star, Pole Star, and sometimes Lodestar. It is the brightest star in the constellation Ursa Minor. It is very close to the north celestial pole (42′ away as of 2006[update]), making it the currentnorthern pole star.

Even though it looks like a single star, Polaris is actually a multiple star system [See Link], but only Polaris A is visible with the naked eye. It is approximately 30 times larger than our Sun as it is classed as a Supergiant. Giving it a diameter of about 26 million miles. The Sun is only 865,000 miles.

How far away is the polar star?

Polaris, also known as the North Star, is about 434 light years, or about 4.1 quadrillion kilometers, from earth.

Why isn't polaris always the north star?

This is because of the precession of the Earth's equinoxes as well as the motion of the stars, themselves. The precession of the equinoxes takes around 25,770 years before returning to the same position.

How do you find the North Star shining brightly on a clear sky during night?

The proper name for the North Star is Polaris. To find it, you first need to identify the constellation Ursa Major and the constellation Ursa Minor. It is in Ursa Minor. Using the stars Dubhe and Merak in Ursa Major as starting points for a line, follow the line to Polaris. It is not a particularly bright star, but is overhead in the northern hemisphere and does not appear to move in the way many other stars do. They all appear to rotate around it.

How can remove clucth for polaris magnum 330?

Remove the clutch cover , you might have to remove the left floorboard to remove the cover . The rear clutch can easily be removed by removing the bolt in the middle and pulling it straight outward . The front clutch requires a puller that screws into the center of the clutch .Removal without a puller will result in clutch damage .

How do you know plattsburgh is the state in which altitude of polaris is the highest?

Is astronomy, star coordinates can be given by two systems:

1. Altitude-azimuth - not fixed, and depends on the observor's location and the time when he is stargazing. It is basically useless for serious astronomy.

2. Equatorial - fixed coordinates, defined as right ascension and declination, which for a given star would be the same anywhere on Earth.

Altitude or elevation (used interchangeably in astronomy) is defined as the angle in degrees from the horizon, or from the horizontal plane with respect to the viewer's eyes.

If all US states are included, the highest altitude of Polaris, aka Alpha Ursae Minoris or the North Star, occurs in the northernmost state, Alaska. The town of Barrow, Alaska is the northernmost settlement in the US, at 71°17'44" N, and thus sees Polaris at its highest altitude.

Within the contiguous US (CONUS, the 48 states), the northernmost incorporated location is Sumas, Washington, with a latitude of 49°00'09" N. Thus that would be the place in the CONUS where Polaris is at its highest elevation. Plattsburgh, NY is at latitude 44°41'43" N, which places it 4°18'26" south of Ramus. It is the northernmost city in NY (there are a towns farther north), so the residents of Plattsburgh can see the Pole Star at the highest elevation of any city in the state.

Interestingly, the elevation of Polaris changes slightly as Earth rotates. It is 0.7° from the north celestial pole, so it draws a 1.4° circle around the pole in 24 hours. Its altitude varies by that 1.4° angle. Thus two towns at exactly the same latitude but on opposite sides of Earth would alternate in seeing the star at its highest altitude.

And to further complicate the issue, Earth's axis is tilted at 23.45° to the plane of its orbit around the sun (the "ecliptic plane"), and it wobbles. It's called precession. Envision a top or a toy gyroscope slowing down. The free end of the axis draws a circle as its speed decreases. The analogy is not exact, since both poles of Earth precess, but the result is that over a period of 25,920 years the poles describe a 46.9° circle in the sky. In about 13,700 AD the star called Vega (Alpha Lyrae) will be the pole star, within 4 degrees of the north celestial pole, and Polaris will be just another bright star with no special significance.

The constellation that contains the pointer stars used to locate Polaris and the North Star is?

Ursa Major is the constellation. The 2 stars in the bowl of the dipper point to Polaris. Polaris IS the North Star.

Why is polaris useful to sea trawlers?

Polaris is the North Star that the fishing or shrimping vessels use in navigation. eD.

What would cause coolant to leak out of your ATV?

The leak could come from: hoses, punctured radiator, split gasket...you can put tracer dye in the coolant and search for the leak with a black light after you clean the engine.

Who is the founder of polaris?

Tom Tiller was the founder,presidnt,and CEO of polaris.

Is the north star the 2 brightest stars?

What we see as the north star, or Polaris or the pole star, is a binary system consisting of two stars. However, neither of these stars are the brightest stars. There are many stars that are much brighter as we see them.

How long will Polaris be our north star?

Due to the precession of the equinoxes, Polaris will no longer be above the North Pole by the end of the 21st Century. Around the 40th Century, the Earth's rotational axis will pass close to Alrai (Gamma Cephei).