| Observation data Epoch J2000.0 |
|
|---|---|
| Constellation (pronunciation) |
Ophiuchus |
| Right ascension | 18h 29m 11s |
| Declination | +11º 41' 44" |
| Apparent magnitude (V) | 8. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. In Astronomy, an epoch is a moment in time used as a reference for the Orbital elements of a Celestial body. 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 Each culture has its own Constellations usually based on Mythology. Ophiuchus (Ὀφιοῦχος ˌɒfiːˈuːkəs is one of the 88 Constellations and was also one of the 48 listed by Ptolemy. Right ascension (abbrev RA; symbol α) is the Astronomical term for one of the two Coordinates of a point on the Celestial sphere In Astronomy, declination (abbrev dec or δ) is one of the two coordinates of the Equatorial coordinate system, the other being either The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 21 |
| Distance | 211. The cosmic distance ladder (also known as the Extragalactic Distance Scale) is the succession of methods by which astronomers determine the Distances to celestial 91 ly (64. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by 97 pc) |
| Spectral type | G5IV |
| Other designations | |
HD 170469 is a yellow subgiant star in the constellation Ophiuchus. 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 A star catalogue, or star catalog, is an Astronomical catalogue that lists Stars In Astronomy, many stars are referred to simply by catalogue In Astronomy, Durchmusterung or Bonner Durchmusterung ( BD) is the usual name for three comprehensive astrometric Star catalogues The Smithsonian Astrophysical Observatory Star Catalog is an astrometric Star catalogue. The Hipparcos and Tycho Catalogues (Tycho-1 are the primary products of the European Space Agency 's astrometric mission Hipparcos. 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 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 Ophiuchus (Ὀφιοῦχος ˌɒfiːˈuːkəs is one of the 88 Constellations and was also one of the 48 listed by Ptolemy. It has apparent magnitude +8. The apparent magnitude ( m) of a celestial body is a measure of its Brightness as seen by an observer on Earth, normalized to the value 21 and it is 211. 91 ly away. A light-year or light year (symbol ly) is a unit of Length, equal to just under ten trillion Kilometres As defined by
In 2007, the planet was discovered by using N2K Consortium by Fischer. Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. An extrasolar planet, or exoplanet, is a Planet beyond the Solar System, orbiting around other Stars As of September 2008 312
HD 170469 b
| Extrasolar planet | List of extrasolar planets | |
|---|---|---|
| Orbital elements | ||
| Semimajor axis | (a) | 2. 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. 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 07 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 36 |
| Orbital period | (P) | 1143 d |
| Angular distance | (θ) | 30. 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 783 mas |
| Longitude of periastron |
(ω) | 73 ± 19° |
| Time of periastron | (T0) | 2,451,826 ± 4 JD |
| Semi-amplitude | (K) | 23. 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 8 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 67 MJ |
| Discovery information | ||
| Discovery date | April 10, 2007 | |
| Discoverer(s) | Fischer et al. Jupiter mass is the unit of Mass equal to one Jupiter (18986 × 1027 kg, 317 Events 879 - Louis III becomes King of the Western Franks. 1407 - the lama Year 2007 ( MMVII) was a Common year starting on Monday of the Gregorian calendar in the 21st century. Debra Fischer is a professor of Astronomy at San Francisco State University. | |
| Detection method | Radial velocity | |
| Discovery status | Published | |
HD 170469 b is a gas giant planet orbiting HD 170469. 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 A gas giant (sometimes also known as a Jovian planet after the planet Jupiter, or giant planet) is a large Planet that is not primarily It is 67% the mass of Jupiter. The mass value is only minimum since if inclination is unknown. Inclination in general is the Angle between a Reference plane and another plane or axis of direction
The orbital distance is more than twice the distance from Earth to the Sun, although taking over three Earth years to orbit the star. The combined distance and period would make orbital velocity of 19. 1 km/s, slower than Earth's 29. EARTH was a short-lived Japanese vocal trio which released 6 singles and 1 album between 2000 and 2001 8 km/s. However, the orbit is very eccentric, meaning the orbital distance and orbital velocity can vary drastically. The orbital speed of a body generally a Planet, a Natural satellite, an artificial satellite, or a Multiple star, is the speed at which it At periastron, the distance is 1. In Celestial mechanics, an apsis, plural apsides (ˈæpsɨdɪːz is the point of greatest or least distance of the Elliptical orbit of an object from 32 AU and velocity of 22. 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 3 km/s. At apastron, the distance is 2. In Celestial mechanics, an apsis, plural apsides (ˈæpsɨdɪːz is the point of greatest or least distance of the Elliptical orbit of an object from 82 AU and velocity of 16. 4 km/s. This type of Jupiter-like planet is called eccentric Jupiter. An Eccentric Jupiter is a Jovian planet that orbits its Star in a highly eccentric orbit much like a Comet.
References
- Fischer et al. (10 Apr 2007). "Five Intermediate-Period Planets from the N2K Sample" 1: 13.