The Juno clump is a probable
main-belt
The asteroid belt is a torus-shaped region in the Solar System, located roughly between the orbits of the planets Jupiter and Mars. It contains a great many solid, irregularly shaped bodies, of many sizes, but much smaller than planets, called ...
asteroid family
An asteroid family is a population of asteroids that share similar proper orbital elements, such as semimajor axis, eccentricity, and orbital inclination. The members of the families are thought to be fragments of past asteroid collisions. An a ...
that share similar orbital elements to
3 Juno
)
, mp_category=Main belt (Juno clump)
, orbit_ref =
, epoch= JD 2457000.5 (9 December 2014)
, semimajor=2.67070 AU
, perihelion=1.98847 AU
, aphelion=3.35293 AU
, eccentricity=0.25545
, period=4.36463 yr
, inclination=12.9817°
, asc ...
.
3 Juno
)
, mp_category=Main belt (Juno clump)
, orbit_ref =
, epoch= JD 2457000.5 (9 December 2014)
, semimajor=2.67070 AU
, perihelion=1.98847 AU
, aphelion=3.35293 AU
, eccentricity=0.25545
, period=4.36463 yr
, inclination=12.9817°
, asc ...
is a large asteroid with a mean diameter of about 235 km, but the remaining bodies are all small. , the brightest of those clearly in the visible clump would have a diameter of about 6 km, given the same albedo as
3 Juno
)
, mp_category=Main belt (Juno clump)
, orbit_ref =
, epoch= JD 2457000.5 (9 December 2014)
, semimajor=2.67070 AU
, perihelion=1.98847 AU
, aphelion=3.35293 AU
, eccentricity=0.25545
, period=4.36463 yr
, inclination=12.9817°
, asc ...
. This indicates that it is probably a so-called cratering family composed of ejecta from impacts on 3 Juno.
The HCM analysis by (Zappalà 1995) determined several likely core members, whose proper elements lie in the approximate ranges
At the present
epoch
In chronology and periodization, an epoch or reference epoch is an instant in time chosen as the origin of a particular calendar era. The "epoch" serves as a reference point from which time is measured.
The moment of epoch is usually decided by ...
, the range of
osculating orbital elements
Orbital elements are the parameters required to uniquely identify a specific orbit. In celestial mechanics these elements are considered in two-body systems using a Kepler orbit. There are many different ways to mathematically describe the same ...
of these core members is
References
*
Zappalà, Vincenzo; Bendjoya, Philippe; Cellino, Alberto;
Farinella, Paolo; and Froeschlé, Claude;
Asteroid Families: Search of a 12,487-Asteroid Sample Using Two Different Clustering Techniques', Icarus, Volume 116, Issue 2 (August 1995), pages 291–314
{{Small Solar System bodies
*
Asteroid groups and families