Becrux | |
| Observation data Epoch J2000 | |
|---|---|
| Constellation (pronunciation) | Crux |
| Right ascension | 12h 47m 43. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. 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. CRUX is a lightweight I686 -optimized Linux distribution targeted at experienced Linux users Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere 2s |
| Declination | −59° 41' 19" |
| Apparent magnitude (V) | 1. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either 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 30 |
| Characteristics | |
| Spectral type | B0. In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics 5 IV |
| U-B color index | −1. In Astronomy, the color index is a simple numerical expression that determines the color of an object which in the case of a Star gives its Temperature 00 |
| B-V color index | −0. In Astronomy, the color index is a simple numerical expression that determines the color of an object which in the case of a Star gives its Temperature 15 |
| Variable type | Beta Cephei |
| Astrometry | |
| Radial velocity (Rv) | +15. For the astronomical object see Variable star. Variable Star is a 2006 novel written by Spider Robinson Beta Cephei (β Cep / β Cephei is a Star in the Constellation Cepheus. Astrometry is the branch of Astronomy that relates to precise measurements and explanations of the positions and movements of Stars and other celestial bodies Radial velocity is the Velocity of an object in the direction of the line of sight (i 6 km/s |
| Proper motion (μ) | RA: −48. The proper motion of a Star is the measurement of its change in position in the sky over time after Improper motions are accounted for 24 mas/yr Dec. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun : −12. 82 mas/yr |
| Parallax (π) | 9. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun Parallax is an apparent displacement or difference of orientation of an object viewed along two different lines of sight and is measured by the angle or semi-angle of inclination between 25 ± 0. 61 mas |
| Distance | 350 ± 20 ly (108 ± 7 pc) |
| Absolute magnitude (MV) | −3. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. Distance is a numerical description of how far apart objects are A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 In Astronomy, absolute magnitude (also known as absolute visual magnitude) is the Apparent magnitude an object would have if it were at a standard 92 |
| Details | |
| Mass | 14 M☉ |
| Radius | 8 R☉ |
| Luminosity | 34,000 L☉ |
| Temperature | 28,200 K |
| Metallicity | 80% Sun |
| Age | 10 million years |
| Visual binary orbit | |
| Companion | β Cru B |
| Period (P) | 4. Mass is a fundamental concept in Physics, roughly corresponding to the Intuitive idea of how much Matter there is in an object The solar mass is a standard way to express Mass in Astronomy, used to describe the masses of other Stars and galaxies. Remote Authentication Dial In User Service ( RADIUS) is a networking protocol that provides centralized access authorization and accounting management for people or computers In Astronomy, the solar radius is a unit of Length used to express the size of Stars It is equal to the current radius of the Sun. Luminosity has different meanings in several different fields of science The solar luminosity, L_\odot is a unit of Luminosity ( power emitted in the form of Photons conventionally used by Astronomers to Temperature is a physical property of a system that underlies the common notions of hot and cold something that is hotter generally has the greater temperature The kelvin (symbol K) is a unit increment of Temperature and is one of the seven SI base units The Kelvin scale is a thermodynamic In Astronomy and Physical cosmology, the metallicity of an object is the proportion of its matter made up of Chemical elements other than Hydrogen 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 A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun A binary star is a Star system consisting of two Stars orbiting around their Center of mass. The orbital period is the time taken for a given object to make one complete Orbit about another object 0 yr |
| Semimajor axis (a) | 8. A year (from Old English gēr) is the time between two recurrences of an event related to the Orbit of the Earth around the Sun In Geometry, the semi-major axis (also semimajor axis) is used to describe the dimensions of ellipses and hyperbolae 0 AU" |
| Eccentricity (e) | 0 |
| Inclination (i) | 0° |
| Longitude of the node (Ω) | 0° |
| Periastron epoch (T) | 0 |
| Other designations | |
Mimosa, Becrux, β Crucis, HR 4853, CPD P-59°4451, HD 111123, FK5 481, SAO 240259, HIP 62434. In Astrodynamics, under standard assumptions, any Orbit must be of Conic section shape Inclination in general is the Angle between a Reference plane and another plane or axis of direction The longitude of the ascending node (☊ or Ω is one of the Orbital elements used to specify the Orbit of an object in space In Celestial mechanics, an apsis, plural apsides (ˈæpsɨdɪːz is the point of greatest or least distance of the Elliptical orbit of an object from In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue The Bright Star Catalogue, also known as the Yale Catalogue of Bright Stars or Yale Bright Star Catalogue, is a Star catalogue that lists of all stars of The Henry Draper Catalogue ( HD) is an Astronomical Star catalogue published between 1918 and 1924 giving Spectroscopic classifications The Smithsonian Astrophysical Observatory Star Catalog is an astrometric Star catalogue. The Hipparcos and Tycho Catalogues (Tycho-1 are the primary products of the European Space Agency 's astrometric mission Hipparcos. | |
| Database references | |
| SIMBAD | data |
Mimosa or Becrux (β Cru / β Crucis / Beta Crucis) is the second brightest star in the constellation Crux (after Alpha Crucis or Acrux) and is one of the brightest stars in the nighttime sky. For the missile mounting see Mistral missile SIMBAD (the S et of I dentifications M easurements and B ibliography for Beta (uppercase Β, lowercase β, internal ϐ; Βήτα Vita is the second letter of the Greek alphabet. 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 CRUX is a lightweight I686 -optimized Linux distribution targeted at experienced Linux users Physical Properties Acrux (α Cru / α Crucis / Alpha Crucis is the brightest star in Constellation Crux, the Southern Cross and Bright stars are bright because they have high luminosities and/or they are nearby
Beta Crucis is located approximately 353 light years distant. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by It is a spectroscopic binary with components that are too close together to resolve with a telescope. A binary star is a Star system consisting of two Stars orbiting around their Center of mass. A telescope is an instrument designed for the observation of remote objects and the collection of Electromagnetic radiation. The pair orbit each other every 5 years and are separated by about 8 AU. The astronomical unit ( AU or au or au or sometimes ua) is a unit of Length based on the distance from the Earth to the Beta Crucis, being of spectral type B0. 5IV, is believed to be the hottest first-magnitude star.
Since Beta Crucis is at roughly −60° declination, it is only visible south of the Tropic of Cancer and therefore didn't receive a known ancient traditional name. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either For the novel by Henry Miller, see Tropic of Cancer (novel. The Tropic of Cancer, or Northern tropic, is one of five "Mimosa" is a recent name based on its color, while "Becrux" is simply a combination of the "Be" in Beta plus Crux. Mimosa is a Genus of about 400 species of herbs and shrubs in the subfamily Mimosoideae of the legume family Fabaceae. It is known as 十字架三 (the Third Star of the Cross) in Chinese.
External links
- MIMOSA. Stars. Retrieved on November 28, 2005.
- Beta Crucis. Alcyone Ephemeris. Retrieved on November 28, 2005.
- http://jumk.de/astronomie/big-stars/becrux.shtml
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