Alderamin

Alderamin lies close to the precessional path of the north celestial pole, so that it periodically comes within 3° of being an exact pole star - a status it last held in about 18,000 BC and will hold again about 5,500 years from now.

Alderamin is a white A7V main sequence star. From the spectral type a temperature of about 8100 K may be inferred. The star would be probably about 1.5 times larger in diameter than the sun and maybe 9 times more luminous.

ALDERAMIN (Alpha Cep) Alfirk (Beta Cep) Alrai (Gamma Cep) Herschel's "Garnet Star" (Mu Cep) Alkurhah (Xi Cep) Al Kalb al Rai (Rho 2 Cep) ...

Alderamin = Alpha Cephei Alfirk = Beta Cephei Errai = Gamma Cephei # Delta Cep = Delta Cephei Eps Cep = Epsilon Cephei Zeta Cep = Zeta Cephei Garnet Star = Mu Cephei & Nu Cep = Nu Cephei Kurhah = Xi Cephei 19 Cep = 19 Cephei ...

Like Alderamin, Errai periodically takes a turn as the Pole Star in Earth's Northern Hemisphere, which will happen again in about 2,500 years. The system exhibits an annual proper motion of 0.

Alderamin Alpha Cephei Aldhafera Zeta Leonis Aldhanab Gamma Gruis Aldhibah Zeta Draconis Aldib Delta Draconis Al Fawaris Delta Cygni Alfecca Meridiana Alpha Coronae Australis Alfirk Beta Cephei Algedi Alpha Capricorni Al Giedi Alpha Capricorni ...

CVn Canes Venatici Hunting Dogs CMa Canis Maior Larger Dog Sirius CMi Canis Minor Smaller Dog Prokyon Cap Capricornus Sea Goat Car Carina Keel Canopus Cas Cassiopeia Cassiopeia Schedir Cen Centaurus Centaur Rigil Kent Cep Cepheus Cepheus Alderamin ...

Alpha Cephei is known as Alderamin ("The Right Shoulder"). In another 5500 years this will become the Pole Star. Beta Cephei is called Alfirk ("The Herd"). This is a visual binary as well as a variable (see below).

Astronomy Constellations - Cepheus - 5alp Cep (Alderamin) Identification Data Common Name ...

The brightest star in the constellation is Alderamin, which is the westernmost star in Cepheus. The top of the house is a special type of star called a cepheid. Cepheids are pulsating stars, used to find large distances.

Oblateness, Rotational Velocity and Gravity Darkening of Alderamin archiv.org Related pages Similar imaging interferometers include COAST, NPOI and more recently VLTI/AMBER and IOTA.

Polaris is due to become an even more accurate pole star in the near future - the distance between Polaris and the pole will reach a minimum of just under 1/2° in the year 2100. After that, Alderamin in Cepheus will be the Pole Star around 7500 AD, ...

of the Earth's precession, these stars are only the current pole stars. Several bright stars lie close to the North Celestial Pole during the 23,000 year precession cycle, including Vega (α Lyrae), Thuban (α Draconis), and Alderamin ...

See also: Star, Constellation, Cepheus, Andromeda, Sky