Procyon A/B

The position of Procyon.
Observation data Epoch J2000
Constellation	Canis Minor
Right ascension	07h 39m 18.1/17.7s
Declination	+05° 13' 29/20"
Apparent magnitude (V)	0.37/10.75
Characteristics
Spectral type	F5 IV-V/DA
B-V color index	0.42
U-B color index	0.02
Variable type	None
Astrometry
Radial velocity (Rv)	-4.1 km/s
Proper motion (μ)	RA: -716.57 mas/yr Dec.: -1034.58 mas/yr
Parallax (π)	286.05 ± 0.81 mas
Distance	11.40 ly (3.496 pc)
Absolute magnitude (MV)	2.65/13.04
Details
Mass	1.50/0.60 M☉
Radius	1.86/0.02 R☉
Luminosity	7.73/0.00055 L☉
Temperature	6,600/9,700 K
Metallicity	140%/?
Rotation	?
Age	1.7 × 109 years
Visual binary orbit
Companion	Procyon B
Period (P)	40.82 years
Semimajor axis (a)	1.18"
Eccentricity (e)	0.36
Inclination (i)	31.9°
Node (Ω)	284.8°
Periastron epoch (T)	1967.86
Other designations
α Canis Minoris, 10 CMi, GCTP 1805.00 A/B, HR 2943, BD +05°1739, LHS 233, GJ 280 A/B, HIP 61421.

Procyon (α CMi / α Canis Minoris / Alpha Canis Minoris) is the brightest star in the constellation Canis Minor and the eighth brightest star in the nighttime sky. Wikipedia does not have an article with this exact name. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... Canis Minor (Latin for little dog) is one of the 88 modern constellations, and was also in Ptolemys list of 48 constellations. ... Right ascension (RA; symbol α: Greek letter alpha; celestial longitude) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... The apparent magnitude (m) of a star, planet or other celestial body is a measure of its apparent brightness as seen by an observer on Earth. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequently refined in terms of other characteristics. ... Shanil Davendra Singh rules 4 life! ... Shanil Davendra Singh rules 4 life! ... Most stars are of nearly constant luminosity. ... This article does not cite its references or sources. ... Radial velocity is the velocity of an object in the direction of the line of sight. ... kilometre per second is an SI derived unit of both speed (scalar) and velocity (vector), signified by the symbol km/s or km s-1. ... The proper motion of a star is the motion of the position of the star in the sky (the change in direction in which we see it, as opposed to the radial velocity) after eliminating the improper motions of the stars, which affect their measured coordinates but are not real... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... Parallax (Greek: παραλλαγή (parallagé) = alteration) is the change of angular position of two stationary points relative to each other as seen by an observer, due to the motion of an observer. ... A milliarcsecond (m, mas) , or a thoundsanth of an arcsecond. ... The distance between two points is the length of a straight line segment between them. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... The parsec (symbol pc) is a unit of length used in astronomy. ... In astronomy, absolute magnitude is the apparent magnitude, m, an object would have if it were at a standard luminosity distance away from us. ... Mass is a property of a physical object that quantifies the amount of matter it contains. ... In astronomy, the solar mass is a unit of mass used to express the mass of stars and larger objects such as galaxies. ... In classical geometry, a radius of a circle or sphere is any line segment with one endpoint on the circle (i. ... In astronomy, the solar radius is a unit of length used to express the size of stars and larger objects such as galaxies. ... Luminosity has different meanings in several different fields of science. ... The solar luminosity is a unit of luminosity (power emitted in the form of photons) conventionally used by astronomers to give the luminosities of stars. ... Temperature is the physical property of a system which underlies the common notions of hot and cold; the material with the higher temperature is said to be hotter. ... The kelvin (symbol: K) is the SI unit of temperature, and is one of the seven SI base units. ... In astronomy, the metallicity of an object is the proportion of its matter made up of chemical elements other than hydrogen and helium. ... Rotation of a plane, seen as the rotation of the terrain relative to the plane (exposure time 1. ... The Pleiades star cluster A star is a massive body of plasma in outer space that is currently producing or has produced energy through nuclear fusion. ... A year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... A binary star system consists of two stars both orbiting around their barycenter. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... In geometry, the semi-major axis (also semimajor axis) a applies to ellipses and hyperbolas. ... In astrodynamics, under standard assumptions any orbit must be of conic section shape. ... Inclination is one of the six orbital parameters describing the shape and orientation of a celestial orbit and is the angular distance of the orbital plane from the plane of the reference (usually planets equator or the ecliptic), stated in degrees. ... An orbital node is one of the two points where an inclined orbit crosses a plane of reference (e. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... Alpha (uppercase Α, lowercase α) is the first letter of the Greek alphabet. ... Orion is a remarkable constellation, visible from most places on the globe at one time or another during the year. ... Canis Minor (Latin for little dog) is one of the 88 modern constellations, and was also in Ptolemys list of 48 constellations. ... Bright stars can be bright because they produce more light, because they are closer to us, or both. ...

Its name comes from the Greek προκύον (Prokyōn), meaning "before the dog", since it precedes the "Dog Star" Sirius as it travels across the sky due to Earth's rotation. (Although Procyon has a greater right ascension, it also has a more northerly declination, which means it will rise above the horizon earlier than Sirius from most northerly latitudes.) These two "dog stars" are referred to in the most ancient literature and were venerated by the Babylonians and the Egyptians. Sirius (α CMa / α Canis Majoris / Alpha Canis Majoris) is the brightest star in the nighttime sky, with a visual apparent magnitude of −1. ... Earth is the third planet from the Sun. ... Right ascension (RA; symbol α: Greek letter alpha; celestial longitude) is the astronomical term for one of the two coordinates of a point on the celestial sphere when using the equatorial coordinate system. ... In astronomy, declination (dec) is one of the two coordinates of the equatorial coordinate system, the other being either right ascension or hour angle. ... Horizon The horizon is the line that separates earth from sky. ... Babylon is the Greek variant of Akkadian Babilu, Ü’Ü’Ü  in Assyrian, an ancient city in Mesopotamia (Location: , , modern Al Hillah, Iraq). ...

Procyon is a vertex of the Winter Triangle. In geometry, a vertex (Latin: whirl, whirlpool; plural vertices) is a corner of a polygon (where two sides meet) or of a polyhedron (where three or more faces and an equal number of edges meet). ... The Winter Triangle is an astronomical asterism involving an imaginary triangle drawn, during the winter, upon the northern hemispheres celestial sphere; with its defining vertices at Betelgeuse, Procyon, and Sirius. ...

Procyon is one of the closest stars to Earth's solar system, being only 3.5 pc or 11.41 light years away. Like Sirius, it is a binary star —the main star (Procyon A) having a faint white dwarf companion (Procyon B). Its closest neighbour is Luyten's star, 0.34 pc or 1.11 ly away. This list of the nearest stars to Earth is ordered by increasing distance out to a maximum of 5 parsecs (16. ... Earth is the third planet from the Sun. ... Presentation of the solar system (not to scale) The solar system comprises our Sun and the retinue of celestial objects gravitationally bound to it. ... The parsec (symbol pc) is a unit of length used in astronomy. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... Sirius (α CMa / α Canis Majoris / Alpha Canis Majoris) is the brightest star in the nighttime sky, with a visual apparent magnitude of −1. ... A binary star system consists of two stars both orbiting around their barycenter. ... White dwarf Sirius-B in x-rays A white dwarf is an astronomical object which is produced when a low or medium mass star dies. ... Luytens Star (GJ 273 Recons) is a red dwarf at a distance of around 12. ...

Procyon A

Light variability of Sol vs. that of Procyon

Procyon A is a yellowish-white star somewhat larger and 7.5 times brighter than the Sun, of spectral type F. In fact, because it is bright even for its spectral class, it is thought to be a subgiant, meaning it has just finished fusing its hydrogen into helium and begun to expand. So far, it is not thought that the star has begun to "redden" but as it continues to expand, the star will swell to about 80 - 150 times its current diameter and become a red or orange color. This will probably happen within 10 - 100 million years. It is expected that the Sun will also go through this process when it begins to die. Graph comparing the light variability of Sol with that of Procyon, as measured by Canadas MOST satellite. ... Graph comparing the light variability of Sol with that of Procyon, as measured by Canadas MOST satellite. ... The Sun is the star at the center of our Solar system. ... Subgiant star is a class of stars that are brighter than normal main sequence (dwarf) stars, but not as bright as true giant stars. ... The deuterium-tritium (D-T) fusion reaction is considered the most promising for producing fusion power. ...

In late June of 2004, Canada's orbital MOST satellite telescope completed a 32-day survey of Procyon A. The continuous optical monitoring was intended to confirm oscillations in its brightness observed from Earth. During the entire two month period however, no fluctuation in intensity whatsoever was observed. These findings have caused astrophysicists to question the accepted tenets of helioseismology, and theories of star formation. As in many cases the nature of stars is all guess-work 2004 (MMIV) was a leap year starting on Thursday of the Gregorian calendar. ... A computer generated image showing the pattern of a p-mode solar acoustic oscillation both in the interior and on the surface of the sun. ...

Procyon B

Procyon B is a faint white dwarf star, with an average separation from Procyon A of about 16 times the Earth's distance from the Sun or roughly the distance between Uranus and the Sun. White dwarf Sirius-B in x-rays A white dwarf is an astronomical object which is produced when a low or medium mass star dies. ... Earth is the third planet from the Sun. ... The Sun is the star at the center of our Solar system. ... Atmospheric characteristics Atmospheric pressure 120 kPa Hydrogen 83% Helium 15% Methane 1. ...

Astrology

Astrologically, Procyon portends wealth, fame, and good fortune. Medieval astrologers considered it one of fifteen Behenian stars, associated with agate and water crowfoot. According to Cornelius Agrippa, its kabbalistic symbol is . A Western astrological chart (or horoscope) - Y2K Chart — This particular chart is calculated for January 1, 2000 at 12:01:00 A.M. Eastern Standard Time in New York City, New York, USA. (Longitude: 074W0023 - Latitude: 40N4251), using the tropical zodiac Example of a Western natal chart Astrology... The Middle Ages formed the middle period in a traditional schematic division of European history into three ages: the classical civilization of Antiquity, the Middle Ages, and modern times. ... The Behenian fixed stars are a selection of fifteen stars considered especially useful for magical applications in the medieval astrology of Europe and the Arab world. ... Agate is a term applied not to a distinct mineral species, but to an aggregate of various forms of silica, chiefly chalcedony. ... This article is about the flower. ... Cornelius Agrippa, as portrayed in Libri tres de occulta philosophia Heinrich Cornelius Agrippa von Nettesheim (born in Köln September 14, 1486 - died in Grenoble February 18, 1535) was a magician and occult writer, astrologer, and alchemist. ... The tree of life Kabbalah (קבלה Reception, Standard Hebrew Qabbala, Tiberian Hebrew Qabbālāh; also written variously as Cabala, Cabalah, Cabbala, Cabbalah, Kabala, Kabalah, Kabbala, Qabala, Qabalah) is a religious philosophical system claiming an insight into divine nature. ... Image File history File links Agrippa1531_Canisminor. ...

Procyon in fiction

• In Star Trek: Enterprise, Procyon is said to be the primary star system for Andoria. The homeworld of the Andorians is the moon of a gas giant orbiting Procyon. The star was the scene of a formidable Federation victory during a war against an alien species known as the Sphere Builders. The USS Enterprise-J took part in this battle. In 2153, Captain Jonathan Archer was brought 400 years forward in time to witness part of the battle.

• The human colony world of We Made It (which is mentioned in Larry Niven's stories and books of the Known Space) orbits Procyon. Pierson's Puppeteers are said to have evolved in a solar system with a star similar to Procyon (which later became a red giant).

• In the Terran Trade Authority, Procyon is orbited by three planets, the middle of which, Sisuphos, is a barely-habitable mining world.

The starship Enterprise (NX-01) Star Trek: Enterprise is a science fiction television series set in the Star Trek universe. ... In the television series Star Trek: Enterprise, the Battle of Procyon Five was a battle fought in the 26th century in which the United Federation of Planets (alongside their former enemies, the Xindi) fought against the Sphere Builders. ... The Sphere Builders are a fictional species from Star Trek. ... The USS Enterprise NCC-1701-J is a starship in the fictional Star Trek universe. ... Jonathan Archer is a fictional character from the television show Star Trek: Enterprise (2001-2005). ... Larry Niven Laurence van Cott Niven (born April 30, 1938) is a US science fiction author. ... Known Space is the fictional setting of many of Larry Nivens science fiction stories. ... Piersons Puppeteers, often known just as Puppeteers, are a fictional alien race from Larry Nivens Known Space books. ... Presentation of the solar system (not to scale) The solar system comprises our Sun and the retinue of celestial objects gravitationally bound to it. ... According to the Hertzsprung-Russell diagram, a red giant is a large non-main sequence star of stellar classification K or M; so-named because of the reddish appearance of the cooler giant stars. ... Terran Trade Authority is a collection of four large illustrated science fiction books published between 1978 and 1980. ... Sisyphus (Greek Σίσυφος; transliteration: Sísuphos; IPA: ), in Greek mythology, was the son of Aeolus and Enarete, husband of Merope, and King/Founder of Ephyra (Corinth). ...

See also

• List of nearest stars

This list of the nearest stars to Earth is ordered by increasing distance out to a maximum of 5 parsecs (16. ...

External links

• Sol Station — Procyon