839 Valborg
Encyclopedia
839 Valborg is a mid-sized S-type
Eunomian asteroid
. Its diameter is about 20 km, its albedo of 0.353 is very high for an asteroidhttp://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab. Its rotation period is 10.366 hourshttp://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006MPBu...33...39W&db_key=AST&data_type=HTML&format=&high=444b66a47d26580.
S-type asteroid
S-type asteroids are of a stony composition, hence the name. Approximately 17% of asteroids are of this type, making it the second most common after the C-type.-Characteristics:...
Eunomian asteroid
Eunomia family
The Eunomia family of asteroids is a large grouping of S-type asteroids named after the Greek goddess Eunomia. It is the most prominent family in the intermediate main belt...
. Its diameter is about 20 km, its albedo of 0.353 is very high for an asteroidhttp://www.psi.edu/pds/archive/astdata04/simps04/diamalb.tab. Its rotation period is 10.366 hourshttp://adsabs.harvard.edu/cgi-bin/nph-bib_query?bibcode=2006MPBu...33...39W&db_key=AST&data_type=HTML&format=&high=444b66a47d26580.