What is the Hilda asteroid group and how many objects are in it?
More than 6,000 asteroids orbit between the main belt and Jupiter to form a distinct dynamical group known as the Hildas. Their namesake is asteroid 153 Hilda.
Questions about Hilda asteroid
Short answers, pulled from the story.
When was the orbital data for Hilda asteroids recorded on January 1st 2005?
Data from the 1st of January 2005 shows black dots representing Hildas against gray background asteroids. Density in the apexes exceeds density on the sides by more than double.
Why do Hilda asteroids avoid dangerous approaches to Jupiter despite close proximity at aphelion?
Conjunctions with Jupiter occur only near the perihelion of Hilda asteroids. This timing prevents dangerous approaches despite close proximity at aphelion.
How long does an average Hilda object rest at its aphelion compared to its speed along the sides?
Objects rest at aphelia for an average of 5.0 to 5.5 years. They traverse the sides much faster, averaging 2.5 to 3.0 years per pass.
Which specific collisional families exist within the larger Hilda group?
Two specific collisional families exist within the larger Hilda group. The first family bears the name of 153 Hilda itself and the second family takes its name from asteroid 1911 Schubart.