Use for discovery:

Find the mass of a planet:

Get a list of the planets:

Find the radius of each planet:

Find the next rise time for a planet from your location and time:

Get a list of classes of planets:

Find the planets in a given class:

Make a graphic of solar system orbit paths:

The solar system planets:

Orbital eccentricity for each planet:

Orbital periods:

Rules for the orbital elements of Earth:

Obliquity of each planet:

Albedo of each planet:

An image of Jupiter:

The known satellites of Neptune:

Diameter of each satellite:

Orbit semimajor axis:

Number of known satellites for each planet:

Date qualifiers can accept an explicit DateObject or queries that evaluate to a DateObject:

Date qualifiers can also be specified using Dated:

Location qualifiers can accept an explicit GeoPosition, location-based Entity objects, or queries that evaluate to one of these:

Compute the ecliptic path for a planet over the course of a year:

The paths for the visible planets:

The distance from Earth to the visible planets over a year:

The apparent magnitude of the visible planets as viewed from Earth over a year:

Compute positions for Venus in the morning sky for 2009:

Make a table of densities of planets:

Log-log plot of orbital period versus distance for the planets, illustrating Kepler's third law:

PlanetData can be combined with SolarSystemFeatureData to create maps with labeled features:

Pluto is not included in the list of solar system planets:

It is now considered a "dwarf planet":

Some information is unknown, for a variety of different reasons:

Plot orbit period versus orbit semimajor axis for planets in the solar system: