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1681 Steinmetz
1681 Steinmetz, provisional designation , is a stony asteroid from the central region of the asteroid belt, approximately 16 kilometers in diameter. It was discovered on 23 November 1948, by French astronomer Marguerite Laugier at Nice Observatory in south-eastern France. It was named after German amateur astronomer Julius Steinmetz. Orbit and classification ''Steinmetz'' orbits the Sun in the Kirkwood gap, central main-belt at a distance of 2.1–3.2 Astronomical unit, AU once every 4 years and 5 months (1,617 days). Its orbit has an orbital eccentricity, eccentricity of 0.20 and an orbital inclination, inclination of 7Degree (angle), ° with respect to the ecliptic. ''Steinmetz'' was first identified as at Heidelberg Observatory in 1914, extending the body's observation arc by 34 years prior to its official discovery observation at Nice. Physical characteristics This asteroid is characterized as a common S-type asteroid in the Tholen classification. Rotation period ... [...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] |
