Saint-Exupéry is a member the Eos family (606),[3] the largest asteroid family of the outer main belt consisting of nearly 10,000 known members.[7]: 23 The asteroid orbits the Sun at a distance of 2.7–3.3 AU once every 5 years and 2 months (1,900 days). Its orbit has an eccentricity of 0.10 and an inclination of 11° with respect to the ecliptic.[1]
The asteroid's was first identified as 1952 HG2 at McDonald Observatory in Texas. One month later, it was also observed at the Palomar Observatory in May 1952. Its observation arc begins by 23 years prior to its official discovery observation at Nauchnyj.[6]
Physical characteristics
According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Saint-Exupéry measures 17.0 kilometers in diameter and its surface has an albedo of 0.168.[4] Based on its absolute magnitude of 11.5, its generic diameter is between 13 and 30 kilometers, assuming an albedo in the range of 0.05 to 0.25.[5]
As of 2017, Saint-Exupéry's effective composition, rotation period and shape remain unknown.[1][8]
In the book, the prince's asteroid also has a unique code: B612 (which does not match this minor planet's provisional designation). However, there is another asteroid called 46610 Bésixdouze, which is French for "B-six-twelve" (B612 in hexadecimal notation equals 46610).
