|Orbit||semi-major axis 2.251 AU, eccentricity 0.146|
|Political Affiliation||Musician's Aid Society, Fenspace Convention|
1405 Sibelius is an asteroid in the Main Belt.
The Dandelions have a number of outposts throughout space, but Concerto, the one on Sibelius, has become the largest and most-often-visited. Pegasus Spacefield (ICAO code XBPS, IATA code WGH) is Concerto's port-of-entry; it is busiest during August, when Filkers gather together to discuss the previous year's best music.