70 Virginis (also designated HD 217014 and SAO 090896, HR 5072) is a main sequence star in the constellation Virgo. It has a confirmed extrasolar planet 70 Virginis b (initially named Goldilocks), at least 6.6 Jupiter masses in size, located about 0.5AU from the star. In astronomy, an epoch is a moment in time for which celestial coordinates or orbital elements are specified. ... -1... See VIRGO (physics) for a French-Italian project in physics. ... 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. ... 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. ... 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. ... In astronomy, color index is a simple numerical expression that determines the color of an object. ... In astronomy, color index is a simple numerical expression that determines the color of an object. ... Most stars are of nearly constant luminosity. ... Astrometry is a part of astronomy and deals with the positions of stars and other celestial bodies, their distances and movements. ... 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 year is the time between two recurrences of an event related to the orbit of the Earth around the Sun. ... 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 said observer. ... personal space, proxemics. ... 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 standardized distance away. ... In astronomy, many stars are referred to simply by catalogue numbers. ... The Henry Draper Catalogue is an astronomy catalogue with astrometric and spectroscopic data about more than 225,000 stars. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... The Henry Draper Catalogue is an astronomy catalogue with astrometric and spectroscopic data about more than 225,000 stars. ... In astronomy, many stars are referred to simply by catalogue numbers. ... In astronomy, many stars are referred to simply by catalogue numbers. ... Hertzsprung-Russell diagram The main sequence of the Hertzsprung-Russell diagram is the curve where the majority of stars are located in this diagram. ... The Pleiades star cluster A star is a massive body of plasma in outer space which is currently or has in the past produced energy through nuclear fusion. ... See VIRGO (physics) for a French-Italian project in physics. ... 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. ... 70 Virignis b is an eccentric Jupiter type extrasolar planet which orbits 70 Virginis a subgiant star approximately 59 light years away. ... Atmospheric characteristics Atmospheric pressure 70 kPa Hydrogen ~86% Helium ~14% Methane 0. ... Mass is a property of physical objects that, roughly speaking, measures the amount of matter they contain. ... The astronomical unit (AU or au or a. ...

In 1996 Geoffrey Marcy used the then known, and uncertain, parallax of 0.112 to derive a distance from Earth of 8.9 parsecs (29 light years), and also derived the effective temperature of the planet to be about 90 degrees Celsius. This would have made the planet hospitable to life. More accurate Hipparcos measurements put its distance at 18.1 parsecs (59 light years +/- 0.77)¹ and its derived mass at 1.12 solar masses, larger than originally thought¹, leading to conditions on the planet making liquid water and life much less likely. 1996 is a leap year starting on Monday of the Gregorian calendar, and was designated the International Year for the Eradication of Poverty. ... Geoffrey Marcy atop the Astronomy Building at UC Berkeley. ... 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 said observer. ... Earth, also known as the Earth, Terra, and (mostly in the 19th century) Tellus, is the third-closest planet to the Sun. ... 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. ... 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 degree Celsius (°C or ℃ (Unicode 0x2103)) is a unit of temperature named after the Swedish astronomer Anders Celsius (1701–1744), who first proposed a similar system in 1742. ... The High Precision Parallax Collecting Satellite of the Hipparcos Space Astrometry Mission was a project of the European Space Agency (ESA) dedicated to the measurement of stellar parallax and the proper motions of stars. ... Water (from the Old English word wæter; c. ...

Reference

• Note 1: Perryman, M. A. C., et al. (1996). Hipparcos distances and mass limits for the planetary candidates: 47 Ursae Majoris, 70 Virginis, 51 Pegasi [1]. Astron. Astrophys. 310: L21-L24.

External links

• NASA nStars Database entry
• ARICNS entry
• SolStation.com