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HD 2638
Observation data
Epoch 2000
Constellation
(pronunciation)		 Cetus
Right ascension 0h 29m 59. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. 2000 ( MM) was a Leap year that started on Saturday of the Common Era, in accordance with the Gregorian calendar. In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Each culture has its own Constellations usually based on Mythology. Cetus ( Κῆτος Kētos, referring to the sea monster Cetus) is a Constellation of the northern winter sky in the region known as the Water Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere 87s
Declination −5° 45' 50. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either 41"
Apparent magnitude (V) 9. The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 8
Distance 175. The cosmic distance ladder (also known as the Extragalactic Distance Scale) is the succession of methods by which astronomers determine the Distances to celestial 18 ly
(53. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by 71 pc)
Spectral type G5V
Other designations
BD-06°82, HIP 2350

HD 2638 is a dim 10th magnitude star in the constellation of Cetus. History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth In common usage a constellation is a group of celestial bodies that are connected together in some arrangement typically stars to form a visible figure or picture Cetus ( Κῆτος Kētos, referring to the sea monster Cetus) is a Constellation of the northern winter sky in the region known as the Water It is a yellow dwarf and similar to our Sun. In Astronomy, a G V star is a Main-sequence Star of spectral type G and luminosity class V The Sun (Sol is the Star at the center of the Solar System. A small telescope is required to view the star. A telescope is an instrument designed for the observation of remote objects and the collection of Electromagnetic radiation.

In 2005 the discovery of an extrasolar planet HD 2638 b orbiting the star was announced by the Geneva Extrasolar Planet Search Team. Year 2005 ( MMV) was a Common year starting on Saturday (link displays full calendar of the Gregorian calendar. An extrasolar planet, or exoplanet, is a Planet beyond the Solar System, orbiting around other Stars As of September 2008 312 HD 2638 b is a planet of the star HD 2638. It is a typical " Hot Jupiter " a planet that orbits its parent star in a very tight "torch orbit" The Geneva Extrasolar Planet Search is a variety of observational programs run by M

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External links

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