Auriga (constellation) and Perseus (constellation)

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Difference between Auriga (constellation) and Perseus (constellation)

Auriga (constellation) vs. Perseus (constellation)

Auriga is one of the 88 modern constellations; it was among the 48 constellations listed by the 2nd-century astronomer Ptolemy. Perseus is a constellation in the northern sky, being named after the Greek mythological hero Perseus.

Asterism (astronomy)

In observational astronomy, an asterism is a popular known pattern or group of stars that are recognised in the night sky.

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Astronomical unit

The astronomical unit (symbol: au, ua, or AU) is a unit of length, roughly the distance from Earth to the Sun.

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B-type main-sequence star

A B-type main-sequence star (B V) is a main-sequence (hydrogen-burning) star of spectral type B and luminosity class V. These stars have from 2 to 16 times the mass of the Sun and surface temperatures between 10,000 and 30,000 K. B-type stars are extremely luminous and blue.

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Binary star

A binary star is a star system consisting of two stars orbiting around their common barycenter.

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Camelopardalis

Camelopardalis is a large but obscure constellation of the northern sky representing a giraffe.

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Capella

Capella, also designated Alpha Aurigae (α Aurigae, abbreviated Alpha Aur, α Aur), is the brightest star in the constellation of Auriga, the sixth-brightest in the night sky, and the third-brightest in the northern celestial hemisphere after Arcturus and Vega.

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Carbon star

A carbon star is typically an asymptotic giant branch star, a luminous red giant, whose atmosphere contains more carbon than oxygen; the two elements combine in the upper layers of the star, forming carbon monoxide, which consumes all the oxygen in the atmosphere, leaving carbon atoms free to form other carbon compounds, giving the star a "sooty" atmosphere and a strikingly ruby red appearance.

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Constellation

A constellation is a group of stars that are considered to form imaginary outlines or meaningful patterns on the celestial sphere, typically representing animals, mythological people or gods, mythological creatures, or manufactured devices.

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Constellation family

Constellation families are collections of constellations sharing some defining characteristic, such as proximity on the celestial sphere, common historical origin, or common mythological theme.

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Declination

In astronomy, declination (abbreviated dec; symbol δ) is one of the two angles that locate a point on the celestial sphere in the equatorial coordinate system, the other being hour angle.

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Edward Emerson Barnard

Edward Emerson Barnard (December 16, 1857 – February 6, 1923) was an American astronomer.

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Emission nebula

An emission nebula is a nebula formed of ionized gases that emit light of various wavelengths.

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Equatorial coordinate system

The equatorial coordinate system is a celestial coordinate system widely used to specify the positions of celestial objects.

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Eugène Joseph Delporte

Eugène Joseph Delporte (10 January 1882 – 19 October 1955) was a Belgian astronomer born in Genappe.

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Gemini (constellation)

Gemini is one of the constellations of the zodiac.

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GK Persei

GK Persei (also Nova Persei 1901) was a bright nova occurring in 1901.

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Greek mythology

Greek mythology is the body of myths and teachings that belong to the ancient Greeks, concerning their gods and heroes, the nature of the world, and the origins and significance of their own cult and ritual practices.

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International Astronomical Union

The International Astronomical Union (IAU; Union astronomique internationale, UAI) is an international association of professional astronomers, at the PhD level and beyond, active in professional research and education in astronomy.

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Light-year

The light-year is a unit of length used to express astronomical distances and measures about 9.5 trillion kilometres or 5.9 trillion miles.

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Luminosity

In astronomy, luminosity is the total amount of energy emitted per unit of time by a star, galaxy, or other astronomical object.

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Milky Way

The Milky Way is the galaxy that contains our Solar System.

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Minute and second of arc

A minute of arc, arcminute (arcmin), arc minute, or minute arc is a unit of angular measurement equal to of one degree.

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MUL.APIN

MUL.APIN is the conventional title given to a Babylonian compendium that deals with many diverse aspects of Babylonian astronomy and astrology.

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North Pole

The North Pole, also known as the Geographic North Pole or Terrestrial North Pole, is (subject to the caveats explained below) defined as the point in the Northern Hemisphere where the Earth's axis of rotation meets its surface.

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Open cluster

An open cluster is a group of up to a few thousand stars that were formed from the same giant molecular cloud and have roughly the same age.

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Pegasus

Pegasus (Πήγασος, Pḗgasos; Pegasus, Pegasos) is a mythical winged divine stallion, and one of the most recognized creatures in Greek mythology.

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Popular Astronomy (US magazine)

Popular Astronomy is an American magazine published by John August Media, LLC and hosted at TechnicaCuriosa.com for amateur astronomers.

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Ptolemy

Claudius Ptolemy (Κλαύδιος Πτολεμαῖος, Klaúdios Ptolemaîos; Claudius Ptolemaeus) was a Greco-Roman mathematician, astronomer, geographer, astrologer, and poet of a single epigram in the Greek Anthology.

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Radiant (meteor shower)

The radiant or apparent radiant of a meteor shower is the point in the sky from which (to a planetary observer) meteors appear to originate.

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Red dwarf

A red dwarf (or M dwarf) is a small and relatively cool star on the main sequence, of M spectral type.

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Red giant

A red giant is a luminous giant star of low or intermediate mass (roughly 0.3–8 solar masses) in a late phase of stellar evolution.

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Reflection nebula

In astronomy, reflection nebulae are clouds of interstellar dust which might reflect the light of a nearby star or stars.

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Right ascension

Right ascension (abbreviated RA; symbol) is the angular distance measured only eastward along the celestial equator from the Sun at the March equinox to the (hour circle of the) point above the earth in question.

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Society Islands

The Society Islands (Îles de la Société or officially Archipel de la Société; Tōtaiete mā.) includes a group of islands in the South Pacific Ocean.

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Solar radius

Solar radius is a unit of distance used to express the size of stars in astronomy.

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Star system

A star system or stellar system is a small number of stars that orbit each other, bound by gravitational attraction.

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Stellar classification

In astronomy, stellar classification is the classification of stars based on their spectral characteristics.

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Stellar evolution

Stellar evolution is the process by which a star changes over the course of time.

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Stellar kinematics

In astronomy, stellar kinematics is the observational study or measurement of the kinematics or motions of stars through space.

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Supergiant star

Supergiants are among the most massive and most luminous stars.

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Taurus (constellation)

Taurus (Latin for "the Bull") is one of the constellations of the zodiac, which means it is crossed by the plane of the ecliptic.

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Thomas David Anderson

Thomas David Anderson (6 February 1853 – 31 March 1932) was a Scottish amateur astronomer.

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Variable star

A variable star is a star whose brightness as seen from Earth (its apparent magnitude) fluctuates.

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X-ray

X-rays make up X-radiation, a form of electromagnetic radiation.

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