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HR 515

Index HR 515

HR 515 is an A-type variable star of δ Scuti type with a period of 0.219 days and an amplitude of 0.02 in visual magnitude. [1]

12 relations: American Association of Variable Star Observers, Amplitude, Apparent magnitude, Aries (constellation), Constellation, Delta Scuti variable, Flamsteed designation, Pisces (constellation), Star, Stellar classification, Variable star, Variable star designation.

American Association of Variable Star Observers

Since its founding in 1911, the American Association of Variable Star Observers (AAVSO) has coordinated, collected, evaluated, analyzed, published, and archived variable star observations made largely by amateur astronomers and makes the records available to professional astronomers, researchers, and educators.

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Amplitude

The amplitude of a periodic variable is a measure of its change over a single period (such as time or spatial period).

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Apparent magnitude

The apparent magnitude of a celestial object is a number that is a measure of its brightness as seen by an observer on Earth.

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Aries (constellation)

Aries is one of the constellations of the zodiac.

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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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Delta Scuti variable

A Delta Scuti variable (sometimes termed dwarf cepheid) is a variable star which exhibits variations in its luminosity due to both radial and non-radial pulsations of the star's surface.

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Flamsteed designation

A Flamsteed designation is a combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England.

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Pisces (constellation)

Pisces is a constellation of the zodiac.

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Star

A star is type of astronomical object consisting of a luminous spheroid of plasma held together by its own gravity.

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Stellar classification

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

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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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Variable star designation

Variable stars are designated using a variation on the Bayer designation format of an identifying label (as described below) combined with the Latin genitive of the name of the constellation in which the star lies.

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Redirects here:

3 Ari, 3 Arietis, VY Piscium, VY Psc.

References

[1] https://en.wikipedia.org/wiki/HR_515

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