Make your own free website on Tripod.com


Asteroid Or Mini-Planet?

The First Ten Minor Planets (Asteroids)

Name Year of
discovery
Mean distance
from sun
(millions of miles)
Orbital period
(years)
Diameter
(miles)
Magnitude
 1. Ceres 1801 257.0 4.60 485 7.4
 2. Pallas 1802 257.4 4.61 304 8.0
 3. Juno 1804 247.8 4.36 118 8.7
 4. Vesta 1807 219.3 3.63 243 6.5
 5. Astraea 1845 239.3 4.14 50 9.9
 6. Hebe 1847 225.2 3.78 121 8.5
 7. Iris 1847 221.4 3.68 121 8.4
 8. Flora 1847 204.4 3.27 56 8.9
 9. Metis 1848 221.7 3.69 78 8.9
10. Hygeia 1849 222.6 5.59 40(?) 9.5

Other Minor Planets (Asteroids)

Asteroids, What Are They?

Ida and its Moon Dactyl Gaspra
Braille Castalia
Eros Geographos
Mathilde Toutatis

Back Main Menu