Some minor planets may have been sighted more than once. In the
data frame, sightings thought to be of the same planet are listed
together. This is Table 1.1 in the Introduction of Hartigan (1975) on page 2.
Usage
data(minor.planets.1961)
Arguments
Format
A data frame with 19 observations on the following 4 variables.
name
a character vector for the year of sighting and astronomer initials
node
a numeric vector for the angle in degrees in the earth plane at which the minor planet crosses the earth's orbit
inclination
a numeric vector for the angle in degrees between the plane of the earth's orbit and the plane of the planet's orbit
axis
a numeric vector for the maximum distance of the minor planet from the sun in astronomical units