Table of Contents
18 relations: A-type main-sequence star, Angular distance, Apparent magnitude, Bayer designation, Binary star, Boötes, Constellation, Effective temperature, Flamsteed designation, Light-year, Photosphere, Radial velocity, Solar luminosity, Solar mass, Spectral line, Stellar classification, Stellar rotation, Variable star.
A-type main-sequence star
An A-type main-sequence star (A) or A dwarf star is a main-sequence (hydrogen burning) star of spectral type A and luminosity class (five). 47 Boötis and a-type main-sequence star are a-type main-sequence stars.
See 47 Boötis and A-type main-sequence star
Angular distance
Angular distance or angular separation is the measure of the angle between the orientation of two straight lines, rays, or vectors in three-dimensional space, or the central angle subtended by the radii through two points on a sphere.
See 47 Boötis and Angular distance
Apparent magnitude
Apparent magnitude is a measure of the brightness of a star or other astronomical object.
See 47 Boötis and Apparent magnitude
Bayer designation
A Bayer designation is a stellar designation in which a specific star is identified by a Greek or Latin letter followed by the genitive form of its parent constellation's Latin name.
See 47 Boötis and Bayer designation
Binary star
A binary star or binary star system is a system of two stars that are gravitationally bound to and in orbit around each other. 47 Boötis and binary star are binary stars.
Boötes
Boötes is a constellation in the northern sky, located between 0° and +60° declination, and 13 and 16 hours of right ascension on the celestial sphere.
Constellation
A constellation is an area on the celestial sphere in which a group of visible stars forms a perceived pattern or outline, typically representing an animal, mythological subject, or inanimate object.
See 47 Boötis and Constellation
Effective temperature
The effective temperature of a body such as a star or planet is the temperature of a black body that would emit the same total amount of electromagnetic radiation.
See 47 Boötis and Effective temperature
Flamsteed designation
A Flamsteed designation is a combination of a number and constellation name that uniquely identifies most naked eye stars in the modern constellations visible from southern England.
See 47 Boötis and Flamsteed designation
Light-year
A light-year, alternatively spelled light year (ly or lyr), is a unit of length used to express astronomical distances and is equal to exactly 9,460,730,472,580.8 km (Scientific notation: 9.4607304725808 × 1012 km), which is approximately 5.88 trillion mi.
Photosphere
The photosphere is a star's outer shell from which light is radiated.
Radial velocity
The radial velocity or line-of-sight velocity of a target with respect to an observer is the rate of change of the vector displacement between the two points.
See 47 Boötis and Radial velocity
Solar luminosity
The solar luminosity is a unit of radiant flux (power emitted in the form of photons) conventionally used by astronomers to measure the luminosity of stars, galaxies and other celestial objects in terms of the output of the Sun.
See 47 Boötis and Solar luminosity
Solar mass
The solar mass is a standard unit of mass in astronomy, equal to approximately.
Spectral line
A spectral line is a weaker or stronger region in an otherwise uniform and continuous spectrum.
See 47 Boötis and Spectral line
Stellar classification
In astronomy, stellar classification is the classification of stars based on their spectral characteristics.
See 47 Boötis and Stellar classification
Stellar rotation
Stellar rotation is the angular motion of a star about its axis.
See 47 Boötis and Stellar rotation
Variable star
A variable star is a star whose brightness as seen from Earth (its apparent magnitude) changes with time.
See 47 Boötis and Variable star
References
Also known as 47 Boo, K Boötis.