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Gliese 3470
GJ 3470, proper name Kaewkosin, is a red dwarf star located in the constellation of Cancer, away from Earth. With a faint apparent magnitude of 12.3, it is not visible to the naked eye. It hosts one known exoplanet, GJ 3470 b. Nomenclature The designation ''GJ 3470'' comes from the Gliese Catalogue of Nearby Stars. This star was first included in the ''Third Catalogue of Nearby Stars'', published in 1991 by Wilhelm Gliese, Gliese and Hartmut Jahreiß, Jahreiß, hence the ''GJ'' prefix usually used for this star. In August 2022, GJ 3470 and its planet were included among 20 planetary systems to be named by the third NameExoWorlds project. The approved names, proposed by a team from Thailand, were announced in June 2023. GJ 3470 is named Kaewkosin and its planet is named Phailinsiam, after names of precious stones in the Thai language. Properties The star has a mass of 0.539 solar masses, a radius of 0.547 solar radii, and a temperature of about . It is about 0.3-3 billion ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
J2000
In astronomy, an epoch or reference epoch is a instant, moment in time used as a reference point for some time-varying astronomical quantity. It is useful for the celestial coordinates or orbital elements of a Astronomical object, celestial body, as they are subject to Perturbation (astronomy), perturbations and vary with time. These time-varying astronomical quantities might include, for example, the mean longitude or mean anomaly of a body, the node of its orbit relative to a reference plane, the direction of the apogee or Perihelion and aphelion, aphelion of its orbit, or the size of the major axis of its orbit. The main use of astronomical quantities specified in this way is to calculate other relevant parameters of motion, in order to predict future positions and velocities. The applied tools of the disciplines of celestial mechanics or its subfield orbital mechanics (for predicting orbital paths and positions for bodies in motion under the gravitational effects of other bodi ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |