The Asteroids; Or Minor Planets Between Mars and Jupiter.

CONTENTS.

PART I.	PAGE
Planetary Discoveries before the Asteroids were known	9
Discovery of the First Asteroids	11
Table I.—Asteroids in the Order of their Discovery	17
Numbers found by the Respective Discoverers	23
Numbers discovered in the Different Months	25
Mode of Discovery	25
Names and Symbols	25
Magnitudes of the Asteroids	26
Orbits of the Asteroids	28
Table II.—Elements of the Asteroids	29
PART II.
Extent of the Zone	37
Theory of Olbers	38
Small Mass of the Asteroids	38
Limits of Perihelion Distance	39
Distribution of the Asteroids in Space	40
Law of Gap Formation	42
Commensurability of Periods with that of Jupiter	43
Orders of Commensurability	44
Elimination of very Eccentric Orbits	46
Relations between certain Adjacent Orbits	47
The Eccentricities	48
The Inclinations	49
Longitudes of the Perihelia and of the Ascending Nodes	50
The Periods	51
Origin of the Asteroids	52
Variability of Certain Asteroids	53
The Average Asteroid Orbit	54
The Relation of Short-Period Comets to the Zone of Asteroids	55
Appendix	59

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