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1391 Carelia
1391 Carelia ( ''prov. designation'': ) is a stony background asteroid from the central region of the asteroid belt. It was discovered on 16 February 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. The S-type asteroid has a rotation period of 5.9 hours and measures approximately in diameter. It was named for the Northeast European region of Karelia. Orbit and classification ''Carelia'' is a non- family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements. It orbits the Sun in the central main-belt at a distance of 2.1–3.0 AU once every 4 years and 1 month (1,485 days; semi-major axis of 2.55 AU). Its orbit has an eccentricity of 0.16 and an inclination of 8 ° with respect to the ecliptic. It was first observed at Heidelberg Observatory, extending the body's observation arc by 2 days prior to its official discovery observation at Turku. ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Lightcurve
In astronomy, a light curve is a graph of light intensity of a celestial object or region as a function of time, typically with the magnitude of light received on the y axis and with time on the x axis. The light is usually in a particular frequency interval or band. Light curves can be periodic, as in the case of eclipsing binaries, Cepheid variables, other periodic variables, and transiting extrasolar planets, or aperiodic, like the light curve of a nova, a cataclysmic variable star, a supernova or a microlensing event or binary as observed during occultation events. The study of the light curve, together with other observations, can yield considerable information about the physical process that produces it or constrain the physical theories about it. Variable stars Graphs of the apparent magnitude of a variable star over time are commonly used to visualise and analyse their behaviour. Although the categorisation of variable star types is increasingly done from their spe ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
