1175 Margo
1175 Margo, provisional designation, is a stony background asteroid from the outermost regions of the asteroid belt, approximately 24 kilometers in diameter. It was discovered on 17 October 1930, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The meaning of the asteroids's name is unknown.
Orbit and classification
Margo is a non-family asteroid from the main belt's background population. It orbits the Sun in the outermost asteroid belt at a distance of 3.0–3.4 AU once every 5 years and 9 months. Its orbit has an eccentricity of 0.07 and an inclination of 16° with respect to the ecliptic.The body's observation arc begins with its first identification as at Heidelberg in November 1907, almost 23 years prior to its official discovery observation.
Physical characteristics
Margo has been characterized as a stony S-type asteroid by Pan-STARRS photometric survey. Conversely, the Collaborative Asteroid Lightcurve Link assumes it to be a carbonaceous C-type.Rotation period and poles
In November 2005, a rotational lightcurve of Margo was obtained from photometric observations by astronomers Raymond Poncy, Gino Farroni, Pierre Antonini, Donn Starkey and Raoul Behrend. Lightcurve analysis gave a well-defined rotation period of 6.0136 hours with a brightness amplitude of 0.31 magnitude. Since then, several other, lower-rated lightcurves have been published.In 2016, the asteroid lightcurve has also been modeled using photometric data from various sources. It gave a concurring period of 6.01375 hours and two spin axis in ecliptic coordinates of and.