54 Piscium (abbreviated 54 Psc) is a 6th magnitude star in the constellation of Pisces. It is classified as a orange dwarf star (spectral class K0 V) and is somewhat less massive and luminous than our Sun. The star is relatively nearby, distance being only 36 light years. It is visible to the unaided eye under very good conditions. A planet was found orbiting the star in 2003. The star is also suspected to be variable in brightness. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... 2000 is a leap year starting on Saturday of the Gregorian calendar. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Pisces (♓, Latin for fish (plural)) is a zodiac constellation which lies between Aquarius to the west and Aries to the east. ... Right ascension (RA; symbol α: Greek letter alpha) 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. ... 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, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... The Pleiades star cluster A star is any massive gaseous body in outer space, just like the Sun. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Pisces (♓, Latin for fish (plural)) is a zodiac constellation which lies between Aquarius to the west and Aries to the east. ... Hertzsprung-Russell diagram The main sequence of the Hertzsprung-Russell diagram is the curve where the majority of stars are located in this diagram. ... In astronomy, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ... A sun is the star at the center of a solar system. ... A light year, abbreviated ly, is the distance light travels in one year: roughly 9. ... A planet (from the Greek πλανήτης, planētēs which means wanderer or more forcefully vagrant, tramp) is an object in orbit around a star that is not a star in its own right. ... 2003 is a common year starting on Wednesday of the Gregorian calendar. ... Most stars are of nearly constant luminosity. ...

54 Piscium b

54 Piscium b is an extrasolar planet orbiting the star. Its minimum mass is one fifth that of Jupiter, and it orbits the star in a very eccentric orbit every two or so months. In geometry, the semi-major axis (also semimajor axis) a applies to ellipses and hyperbolas. ... The astronomical unit (AU or au or a. ... (This page refers to eccitricity in astrodynamics. ... The orbital period is the time it takes a planet (or another object) to make one full orbit. ... James M. Cox Dayton International Airport is an airport located near Dayton, Ohio. ... 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. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... This article is about several astronomical terms (apogee & perigee, aphelion & perihelion, generic equivalents based on apsis, and related but rarer terms. ... The Julian day or Julian day number (JDN) is the number of days that have elapsed since 12 noon Greenwich Mean Time (UT or TT) on Monday, January 1, 4713 BC (in the proleptic Julian calendar; or November 24, 4714 BC in the proleptic Gregorian calendar). ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... In classical geometry, a radius of a circle or sphere is any line segment with one endpoint on the circle (i. ... Density (symbol: ρ - Greek: rho) is a measure of mass per unit of volume. ... The international prototype, made of platinum-iridium, which is kept at the BIPM under conditions specified by the 1st CGPM in 1889. ... The cubic metre (symbol m³) is the SI derived unit of volume. ... 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. ... Professor Fischer showing off her pgplot prowess with a keplerian fit for υ And. ... Categories: Astronomers stubs | Astronomers ... Geoffrey Marcy atop the Astronomy Building at UC Berkeley. ... 2003 is a common year starting on Wednesday of the Gregorian calendar. ... Infrared image of the star GQ Lupi (A) orbited by a planet (b) at a distance of approximately 20 times the distance between Jupiter and our Sun. ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... (This page refers to eccitricity in astrodynamics. ... In Egyptian mythology, Month is an alternate spelling for Menthu. ...

54 Piscium B?

54 Piscium may be a binary star, with a dim 11th magnitude companion. If this is the case, the companion must be a red dwarf star. No data is available on it. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... 2000 is a leap year starting on Saturday of the Gregorian calendar. ... Orion is a remarkable constellation, visible from most places on the globe (but not always the whole year long). ... Pisces (♓, Latin for fish (plural)) is a zodiac constellation which lies between Aquarius to the west and Aries to the east. ... Right ascension (RA; symbol α: Greek letter alpha) 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. ... 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, stellar classification is a classification of stars based initially on photospheric temperature and its associated spectral characteristics, and subsequenly refined in terms of other characteristics. ... The apparent magnitude (m) of a star, planet or other heavenly body is a measure of its apparent brightness; that is, the amount of light received from the object. ... Binary star A binary star system consists of two stars both orbiting around their barycenter. ... Red Dwarf is a British science fiction comedy, created and originally written by Rob Grant and Doug Naylor. ...

External links

• SIMBAD (http://simbad.u-strasbg.fr/Simbad) 54 Psc A entry (http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+3651) 54 Psc B entry (http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=BD%2B20%2085B) planet entry (http://simbad.u-strasbg.fr/sim-id.pl?protocol=html&Ident=HD+3651+B)
• The Extrasolar Planets Encyclopaedia (http://www.obspm.fr/encycl/encycl.html) entry (http://www.obspm.fr/encycl/HD3651.html)
• The Encyclopedia of the Suns (http://www.astronexus.com/eos/index.php) entry (http://www.astronexus.com/scripts/eos/eos_star.php?IDType=HD&ID=3651)