| Observation data Epoch J2000. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. 0 |
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| Constellation (pronunciation) |
Lyra |
| Right ascension | 18h 46m 13. 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. Lyra (ˈlaɪrə Lyre) is one of the 48 Constellations listed by Ptolemy, and is one of the 88 modern constellations recognized by the International Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere 0095s |
| Declination | +41° 26' 30. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either 517" |
| Apparent magnitude (V) | 6. 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 055 |
| Characteristics | |
| Spectral type | B6V |
| U-B color index | -0. In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics 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 49 |
| 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 13 |
| Astrometry | |
| Radial velocity (Rv) | -19. 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 1 km/s |
| Proper motion (μ) | RA: 0. 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 98 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 : -0. 14 mas/yr |
| Parallax (π) | 2. 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 67 ± 0. 53 mas |
| Distance | approx. 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 1200 ly (approx. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by 370 pc) |
| Other designations | |
HD 173936 is a 6th magnitude star in the constellation Lyra, approximately 1200 light years away from Earth. History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue The Henry Draper Catalogue ( HD) is an Astronomical Star catalogue published between 1918 and 1924 giving Spectroscopic classifications 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 In Astronomy, Durchmusterung or Bonner Durchmusterung ( BD) is the usual name for three comprehensive astrometric Star catalogues 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. The Guide Star Catalog ( GSC) is also known as the Hubble Space Telescope Guide Catalog ( HSTGC) 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 Lyra (ˈlaɪrə Lyre) is one of the 48 Constellations listed by Ptolemy, and is one of the 88 modern constellations recognized by the International A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 It is a bluish white star of the spectral type B6V. In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics It is therefore a dwarf star, like our Sun, with a surface temperature of 11,000 to 25,000 kelvins. The term dwarf star refers to a variety of distinct classes of Stars Dwarf star alone generally refers to any Main sequence star a star The Sun (Sol is the Star at the center of the Solar System. 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 It is at least twice as hot and many times brighter than the Sun. [1]
References
- ^ a b Simbad Query Result. Simbad. Retrieved on October 17, 2007. Events 539 BC - King Cyrus The Great of Persia marches into the city of Babylon, releasing the Jews from almost Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century.
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