| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Parent star | ||
| Star | HD 164922 | |
| Constellation | Hercules | |
| Right ascension | (α) | 18h 02m 30. An extrasolar planet, or exoplanet, is a Planet beyond the Solar System, orbiting around other Stars As of September 2008 312 The following are lists of stars with confirmed Extrasolar planets. A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth HD 164922 is a seventh magnitude Star in the Constellation of Hercules. 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 Hercules (ˈhɝkjəliːz ˈhɝkjuːliːz is the fifth largest of the 88 modern Constellations It was also one of Ptolemy 's 48 constellations Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere 86s |
| Declination | (δ) | +26° 18′ 46. In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either 81″ |
| Distance | 71. The cosmic distance ladder (also known as the Extragalactic Distance Scale) is the succession of methods by which astronomers determine the Distances to celestial 5 ly (21. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by 93 pc) | |
| Spectral type | K0V | |
| Orbital elements | ||
| Semimajor axis | (a) | 2. History The first direct measurements of an object at interstellar distances were undertaken by German Astronomer Friedrich Wilhelm Bessel in 1838 In Astronomy, stellar classification is a classification of Stars based initially on photospheric temperature and its associated Spectral characteristics The elements of an orbit are the parameters needed to specify that Orbit uniquely given a model of two point-masses obeying the Newtonian laws of motion and the In Geometry, the semi-major axis (also semimajor axis) is used to describe the dimensions of ellipses and hyperbolae 11±0. 13 AU |
| Eccentricity | (e) | 0. The astronomical unit ( AU or au or au or sometimes ua) is a unit of Length based on the distance from the Earth to the In Astrodynamics, under standard assumptions, any Orbit must be of Conic section shape 05±0. 14 |
| Orbital period | (P) | 1155±23 d |
| Angular distance | (θ) | 96. The orbital period is the time taken for a given object to make one complete Orbit about another object A day (symbol d is a unit of Time equivalent to 24 Hours and the duration of a single Rotation of planet Earth with respect to the In Mathematics (in particular Geometry and Trigonometry) and all Natural sciences (including astronomy geophysics etc the angular distance 215 mas |
| Longitude of periastron |
(ω) | 195° |
| Time of periastron | (T0) | 2,411,100±280 JD |
| Semi-amplitude | (K) | 7. A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. In Astrodynamics, the longitude of the periapsis (symbolized \varpi of an orbiting body is the Longitude (measured from the point of the vernal equinox In Celestial mechanics, an apsis, plural apsides (ˈæpsɨdɪːz is the point of greatest or least distance of the Elliptical orbit of an object from In Celestial mechanics, an apsis, plural apsides (ˈæpsɨdɪːz is the point of greatest or least distance of the Elliptical orbit of an object from The Julian date (JD is the interval of time in days and fractions of a day since 4713 B Amplitude is the magnitude of change in the oscillating variable with each Oscillation, within an oscillating system 3±1. 2 m/s |
| Physical characteristics | ||
| Mass | (m) | >0. Mass is a fundamental concept in Physics, roughly corresponding to the Intuitive idea of how much Matter there is in an object 36±0. 046 MJ |
| Discovery information | ||
| Discovery date | July 15, 2006 | |
| Discoverer(s) | Butler et al. Jupiter mass is the unit of Mass equal to one Jupiter (18986 × 1027 kg, 317 Paul Butler' may refer to Paul Butler (artist, Canadian artist Paul Butler (lawyer (1905–1961 American lawyer chairman of the | |
| Detection method | Radial velocity | |
| Discovery site | California, USA | |
| Discovery status | Published | |
HD 164922 b is a water jovian extrasolar planet orbiting around orange dwarf star HD 164922, located in Hercules constellation at a distance of 71. Any Planet is an extremely faint light source compared to its parent Star. Radial velocity is the Velocity of an object in the direction of the line of sight (i California ( is a US state on the West Coast of the United States, along the Pacific Ocean. The United States of America —commonly referred to as the An extrasolar planet, or exoplanet, is a Planet beyond the Solar System, orbiting around other Stars As of September 2008 312 A K V star is a Main sequence ( Hydrogen -burning Star of spectral type K and luminosity class V A star is a massive luminous ball of plasma. The nearest star to Earth is the Sun, which is the source of most of the Energy on Earth HD 164922 is a seventh magnitude Star in the Constellation of Hercules. Hercules (ˈhɝkjəliːz ˈhɝkjuːliːz is the fifth largest of the 88 modern Constellations It was also one of Ptolemy 's 48 constellations The cosmic distance ladder (also known as the Extragalactic Distance Scale) is the succession of methods by which astronomers determine the Distances to celestial 5 light years from Earth. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 It was the first long period saturnian planet discovered. Its inclination is not known, and its true mass may be slightly greater. Inclination in general is the Angle between a Reference plane and another plane or axis of direction The term true mass is synonymous with the term Mass, but is used in Astronomy to differentiate the measured mass of a planet from the lower limit of mass usually obtained The angular separation between the companion planet and host star is nearly 100 mas. In Mathematics (in particular Geometry and Trigonometry) and all Natural sciences (including astronomy geophysics etc the angular distance A minute of arc, arcminute, or MOA is a unit of angular measurement, equal to one sixtieth (1/60 of one degree. The planet also has a low eccentricity, unlike most other long period extrasolar planets – 0. 05 – about the same as Jupiter and Saturn in our own solar system. The Solar System consists of the Sun and those celestial objects bound to it by Gravity.
References
- Butler et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505 – 522. The Astrophysical Journal (abbreviated to ApJ or Astrophys J) is a Scientific journal covering Astronomy and Astrophysics. (web Preprint)
See also
- 14 Herculis b
External links
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