| 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 34m 08. 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 7808s |
| Declination | +38° 26' 15. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either 064" |
| Apparent magnitude (V) | 7. 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 50 |
| Characteristics | |
| Spectral type | K2 |
| B-V color index | +1. 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 10 |
| Astrometry | |
| Proper motion (μ) | RA: -29. Astrometry is the branch of Astronomy that relates to precise measurements and explanations of the positions and movements of Stars and other celestial bodies 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 10 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 : 57. 60 mas/yr |
| Other designations | |
HD 171619 is an 8th magnitude star in the constellation Lyra, approximately 1108 light years from Earth. 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 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 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 Guide Star Catalog ( GSC) is also known as the Hubble Space Telescope Guide Catalog ( HSTGC) 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 It is an orange star of the spectral type K2, meaning it has a surface temperature of 3,500 to 5,000 kelvin. In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics 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 [1] It can be found within 50 arcminutes of the star Vega. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. Vega (α Lyr / α Lyrae / Alpha Lyrae ( or) is the brightest Star in the Constellation Lyra, the fifth brightest star in the night [2]
References
- ^ a b Simbad Query Result. Simbad. Retrieved on October 14, 2007. Events 1066 - Norman Conquest: Battle of Hastings - In England on Senlac Hill seven miles from Hastings, the forces Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century.
- ^ Autostar Suite Astronomer Edition. CD-ROM. Meade, April 2006.
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