what is defined as being zero degrees altitude

What Is Defined As Being Zero Degrees Altitude?

What is defined as being zero degrees altitude? horizon. From what place on earth would you view the North Celestial Pole at your zenith? the north pole. You just studied 22 terms!

What are the right ascension and declination of the star Procyon in the constellation Canis Minor quizlet?

Canis Minor, (Latin: “Lesser Dog”) constellation in the northern sky, at about 8 hours right ascension and 5° north in declination. The brightest star in Canis Minor is Procyon, the eighth brightest star in the sky and the 13th nearest to Earth, at a distance of 11.4 light-years.

What is the right ascension of the star Capella in the constellation of Auriga Group of answer choices?

Auriga, (Latin: Charioteer) constellation in the northern sky, at about 6 hours right ascension and 45° north in declination. The brightest star in Auriga is Capella, the sixth brightest star in the sky. The constellation also contains the notable eclipsing binary Epsilon Aurigae.

Where on Earth would you have to be for the celestial equator to be at your zenith?

To see zenith, on Earth you would have to look directly overhead wherever you are standing. To see the celestial equator pass through your zenith, you would need to be 35 degrees north latitude, or 35 degrees north of the equator.

What are the right ascension and declination of the star Betelgeuse in the constellation Orion Group of answer choices?

5 hours It is best seen between latitudes 85 and minus 75 degrees. Its right ascension is 5 hours, and its declination is 5 degrees. Betelgeuse, the second brightest star in Orion — according to the night sky guide website In-The-Sky.org, establishes the right shoulder of the hunter.

What is the right ascension and declination of the star Procyon?

RA 7h 39m 18s | Dec +5° 13′ 30″

What is the name of the star that has a right ascension RA 14 h 15 min and a declination Dec 19 degrees which constellation containing this star?

Locating Arcturus

Arcturus’s location is: Right ascension: 14 hours, 15 minutes, 39.7 seconds. Declination: +19 degrees, 10 minutes, 57 seconds.

What is Capella in the sky?

Bottom line: Capella, the Goat Star, is the brightest star in the constellation Auriga the Charioteer and the sixth brightest star in the night sky. Capella is prominent in the Northern Hemisphere’s winter sky and makes up one of the points in the Winter Hexagon.

What is the classification of the star Capella?

G3III:

Why is Arcturus so bright?

Arcturus is roughly 25 times greater in diameter than our sun. Because of its larger size, in visible light Arcturus radiates more than 100 times the light of our sun. If you consider infrared and other forms of radiant energy, Arcturus is about 200 times more powerful than the sun.

Where on Earth Is east not clearly defined?

At almost any point on Earth, the four directions—north, south, east, and west—are well defined, despite the fact that our planet is round rather that flat. The only exceptions are exactly at the North and South Poles, where the directions east and west are ambiguous (because points exactly at the poles do not turn).

Why can’t a person in Antarctica use the Big Dipper?

Why can’t a person in Antarctica use the Big Dipper to find the north direction? … A person near Earth’s south pole can only see things in the southern celestial hemisphere because the Earth (the horizon) blocks the view of everything else.

What is meant by right ascension?

right ascension, in astronomy, the east–west coordinate by which the position of a celestial body is ordinarily measured; more precisely, it is the angular distance of a body’s hour circle east of the vernal equinox, measured along the celestial equator. … The symbol for right ascension is the Greek letter α (alpha).

Which star is brighter Antares or Betelgeuse?

Both stars are typical massive M2 supergiant stars, 500-600 light years away. Betelgeuse is slightly brighter (V = 0.45), perhaps because it is slightly more luminous. … This means that, if Antares was where the sun is, we would be well inside it! Red Antares A has a hot blue companion Antares B, a B2.

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Is Orion in the Milky Way?

The Orion Arm, or Orion–Cygnus Arm, is a minor spiral arm of the Milky Way galaxy. … The Orion Arm is between the Carina–Sagittarius Arm (toward the Galactic centre) and the Perseus Arm (toward the outside Universe). The Perseus Arm is one of the two major arms of the Milky Way.

What are the three important constellations?

The three largest constellations are gracing the evening skies. Hydra, the sea serpent; Virgo, the maiden; and Ursa Major, the big bear are visible in the night sky right now.

Is Spica a giant star?

The MK spectral classification of Spica is typically considered to be an early B-type main-sequence star. … This is a massive star with more than 10 times the mass of the Sun and seven times its radius.

Why are stars born in a nebula?

STAR BIRTHS are started when the interstellar matter in gas clouds, such as the Eagle Nebula shown here, compresses and fuses. … Some astronomers think that a gravitational or magnetic disturbance causes the nebula to collapse. As the gases collect, they lose potential energy, which results in an increase in temperature.

Why is Procyon so bright?

Like Alpha Centauri, it appears so bright because at 11.4 light-years, it is relatively close. Procyon is an example of a main sequence subgiant star, one that is starting to die as it converts its remaining core hydrogen into helium.

What is right ascension equivalent to?

longitude Right Ascension is the astronomical equivalent of longitude. Right ascension is the angular distance of an object measured eastward from the First Point of Aries, also called the Vernal Equinox (see above).

What is the altitude of the horizon?

Definition of “altitude” The angle of a celestial object measured upwards from the observer’s horizon. Thus, an object on the horizon has an altitude of 0° and one directly overhead has an altitude of 90°. Negative values for the altitude mean that the object is below the horizon.

How do you read right ascension and declination?

Declination (DEC) is the celestial sphere’s equivalent of latitude and it is expressed in degrees, as is latitude. For DEC, + and – refer to north and south, respectively. The celestial equator is 0° DEC, and the poles are +90° and -90°. Right ascension (RA) is the celestial equivalent of longitude.

How far is Arcturus from Earth?

36.66 light years

How big is Rigel compared to the sun?

Its surface temperature is also far hotter than the sun, around 21,000 degrees Fahrenheit (11,600 degrees Celsius). Compare that to 10,000 degrees F (5,500 degrees C) for the sun. In terms of overall size, Rigel measures 79 times the diameter of the sun.

What color is Procyon?

white

A binary star system, Procyon consists of a white-hued main-sequence star of spectral type F5 IV–V, designated component A, in orbit with a faint white dwarf companion of spectral type DQZ, named Procyon B.

How far away is Pollux from Earth?

33.72 light years

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What is the spectra of Capella?

Capella has a spectral type of G5III, a surface temperature of 4940° Kelvin and a luminosity 79 times the Sun. It has a mass of 2.69 solar masses and a diameter 12 times the Sun. … Although it appears to be a single star to the naked eye, Capella is actually a star system of four stars in two binary pairs.

What is the luminosity of Altair?

10.6 L☉

Is Arcturus moving towards Earth?

Arcturus is moving rapidly (122 km/s or 270,000 mph) relative to the Sun, and is now almost at its closest point to the Sun. Closest approach will happen in about 4,000 years, when the star will be a few hundredths of a light-year closer to Earth than it is today.

Is Capella a red giant?

Capella Ab is slightly smaller and hotter and of spectral class G1III; it is 72.7 ± 3.6 times as luminous as the Sun and 8.83 ± 0.33 times its radius. It is in the Hertzsprung gap, corresponding to a brief subgiant evolutionary phase as it expands and cools to become a red giant.

Will our Sun go supernova?

The Sun as a red giant will then… go supernova? Actually, no—it doesn’t have enough mass to explode. Instead, it will lose its outer layers and condense into a white dwarf star about the same size as our planet is now. … When the Sun leaves behind a nebulae it will no longer be in the Milky Way.

What latitude is the equator at?

0 degrees latitude The Equator is the line of 0 degrees latitude. Each parallel measures one degree north or south of the Equator, with 90 degrees north of the Equator and 90 degrees south of the Equator. The latitude of the North Pole is 90 degrees N, and the latitude of the South Pole is 90 degrees S.

When a planet in its orbit is closer to the sun it?

A planet’s orbital speed changes, depending on how far it is from the Sun. The closer a planet is to the Sun, the stronger the Sun’s gravitational pull on it, and the faster the planet moves. The farther it is from the Sun, the weaker the Sun’s gravitational pull, and the slower it moves in its orbit.

What event actually made it possible for the three laws of planetary motion to be discovered?

What specific event really made it possible for the three laws of planetary motion to be discovered? When NASA and a group of astronomers sent up a spacecraft designed to find planets orbiting other stars, they named it after Kepler.