Delta Ceti
Encyclopedia
Delta Ceti is a Class B2
, fourth-magnitude star
in the constellation
Cetus.
This star, along with α Cet
(Menkar), λ Cet
(Menkar), γ Cet
(Kaffaljidhma), μ Cet, ξ1 Cet and ξ2 Cet were Al Kaff al Jidhmah, "the Part of a Hand"..
According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Kaff al Jidhmah were the title for five stars :γ Cet
as Kaffaljidhma, ξ1 Cet as Al Kaff al Jidhmah I, ξ2 Cet as Al Kaff al Jidhmah II, δ Cet as Al Kaff al Jidhmah III and μ Cet as Al Kaff al Jidhmah IV (exclude α Cet
and λ Cet
)
In Chinese
, , meaning Circular Celestial Granary
, refers to an asterism consisting of δ Ceti, α Ceti
, κ1 Ceti
, λ Ceti
, μ Ceti, ξ1 Ceti, ξ2 Ceti, ν Ceti, γ Ceti
, 75 Ceti, 70 Ceti, 63 Ceti and 66 Ceti. Consequently, δ Ceti itself is known as
and is located about 0.74 degrees WNW of the spiral galaxy
M77
. Delta Ceti is a blue giant star located about 660 light-year
s from Earth
.
Stellar classification
In astronomy, stellar classification is a classification of stars based on their spectral characteristics. The spectral class of a star is a designated class of a star describing the ionization of its chromosphere, what atomic excitations are most prominent in the light, giving an objective measure...
, fourth-magnitude star
Star
A star is a massive, luminous sphere of plasma held together by gravity. At the end of its lifetime, a star can also contain a proportion of degenerate matter. The nearest star to Earth is the Sun, which is the source of most of the energy on Earth...
in the constellation
Constellation
In modern astronomy, a constellation is an internationally defined area of the celestial sphere. These areas are grouped around asterisms, patterns formed by prominent stars within apparent proximity to one another on Earth's night sky....
Cetus.
This star, along with α Cet
Alpha Ceti
Alpha Ceti is a star in the constellation of Cetus. It has the traditional name Menkar or Menkab. The name Menkar derives from the Arabic word منخر manħar "nostril" ....
(Menkar), λ Cet
Lambda Ceti
Lambda Ceti is Class B star of fifth-magnitude star located in the constellation Cetus. Historically, the star bore the traditional name Menkar, although today that name is more commonly associated with α Ceti....
(Menkar), γ Cet
Gamma Ceti
Gamma Ceti is a star in the constellation Cetus. It has the traditional name Kaffaljidhma. The title Kaffaljidhma was derived from Arabic الكف الجذماء Al Kaff al Jidhmah, "The cut-short hand", the association of this star, along with α Cet , δ Cet, λ Cet , μ Cet, ξ1 Cet and ξ2 Cet..According to...
(Kaffaljidhma), μ Cet, ξ1 Cet and ξ2 Cet were Al Kaff al Jidhmah, "the Part of a Hand"..
According to the catalogue of stars in the Technical Memorandum 33-507 - A Reduced Star Catalog Containing 537 Named Stars, Al Kaff al Jidhmah were the title for five stars :γ Cet
Gamma Ceti
Gamma Ceti is a star in the constellation Cetus. It has the traditional name Kaffaljidhma. The title Kaffaljidhma was derived from Arabic الكف الجذماء Al Kaff al Jidhmah, "The cut-short hand", the association of this star, along with α Cet , δ Cet, λ Cet , μ Cet, ξ1 Cet and ξ2 Cet..According to...
as Kaffaljidhma, ξ1 Cet as Al Kaff al Jidhmah I, ξ2 Cet as Al Kaff al Jidhmah II, δ Cet as Al Kaff al Jidhmah III and μ Cet as Al Kaff al Jidhmah IV (exclude α Cet
Alpha Ceti
Alpha Ceti is a star in the constellation of Cetus. It has the traditional name Menkar or Menkab. The name Menkar derives from the Arabic word منخر manħar "nostril" ....
and λ Cet
Lambda Ceti
Lambda Ceti is Class B star of fifth-magnitude star located in the constellation Cetus. Historically, the star bore the traditional name Menkar, although today that name is more commonly associated with α Ceti....
)
In Chinese
Chinese language
The Chinese language is a language or language family consisting of varieties which are mutually intelligible to varying degrees. Originally the indigenous languages spoken by the Han Chinese in China, it forms one of the branches of Sino-Tibetan family of languages...
, , meaning Circular Celestial Granary
Stomach (Chinese constellation)
The Stomach mansion is one of the Twenty-eight mansions of the Chinese constellations. It is one of the western mansions of the White Tiger.-Asterisms:...
, refers to an asterism consisting of δ Ceti, α Ceti
Alpha Ceti
Alpha Ceti is a star in the constellation of Cetus. It has the traditional name Menkar or Menkab. The name Menkar derives from the Arabic word منخر manħar "nostril" ....
, κ1 Ceti
Kappa1 Ceti
Kappa1 Ceti is a yellow dwarf star approximately 30 light-years away in the constellation of Cetus. The star was discovered to have a rapid rotation, roughly once every nine days. Though there are no extrasolar planets confirmed to be orbiting the star, Kappa1 Ceti is considered a good candidate...
, λ Ceti
Lambda Ceti
Lambda Ceti is Class B star of fifth-magnitude star located in the constellation Cetus. Historically, the star bore the traditional name Menkar, although today that name is more commonly associated with α Ceti....
, μ Ceti, ξ1 Ceti, ξ2 Ceti, ν Ceti, γ Ceti
Gamma Ceti
Gamma Ceti is a star in the constellation Cetus. It has the traditional name Kaffaljidhma. The title Kaffaljidhma was derived from Arabic الكف الجذماء Al Kaff al Jidhmah, "The cut-short hand", the association of this star, along with α Cet , δ Cet, λ Cet , μ Cet, ξ1 Cet and ξ2 Cet..According to...
, 75 Ceti, 70 Ceti, 63 Ceti and 66 Ceti. Consequently, δ Ceti itself is known as
Structure
Delta Ceti is positioned very near the celestial equatorCelestial equator
The celestial equator is a great circle on the imaginary celestial sphere, in the same plane as the Earth's equator. In other words, it is a projection of the terrestrial equator out into space...
and is located about 0.74 degrees WNW of the spiral galaxy
Spiral galaxy
A spiral galaxy is a certain kind of galaxy originally described by Edwin Hubble in his 1936 work The Realm of the Nebulae and, as such, forms part of the Hubble sequence. Spiral galaxies consist of a flat, rotating disk containing stars, gas and dust, and a central concentration of stars known as...
M77
Messier 77
Messier 77 is a barred spiral galaxy about 47 million light-years away in the constellation Cetus. Messier 77 is an active galaxy with an Active Galactic Nucleus , which is obscured from view by astronomical dust at visible wavelengths...
. Delta Ceti is a blue giant star located about 660 light-year
Light-year
A light-year, also light year or lightyear is a unit of length, equal to just under 10 trillion kilometres...
s from Earth
Earth
Earth is the third planet from the Sun, and the densest and fifth-largest of the eight planets in the Solar System. It is also the largest of the Solar System's four terrestrial planets...
.