minor.planets.1961 {cluster.datasets}

Hartigan (1975) Minor Planets

Description

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)

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

Details

None.

Source

Elements of Minor Planets (1961), University of Cincinnati Observatory

SPAETH2 Cluster Analysis Datasets http://people.sc.fsu.edu/~jburkardt/datasets/spaeth2/spaeth2.html

References

Hartigan, J. A. (1975). Clustering Algorithms, John Wiley, New York.

Examples

data(minor.planets.1961)