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While researching a topic, a student has taken the following notes:
• Kepler's first law of planetary motion states that the orbit of a planet around the Sun is an ellipse.
• The law also states that, in an elliptical orbit, the object being orbited is one of the ellipse's foci.
• Kepler's laws of planetary motion also apply to natural satellites (e.g., moons).
• Tethys is a moon of Saturn that orbits the planet in 1.89 Earth days on average.
• Tethys's orbit is elliptical.
• Kepler's first law of planetary motion states that the orbit of a planet around the Sun is an ellipse.
• The law also states that, in an elliptical orbit, the object being orbited is one of the ellipse's foci.
• Kepler's laws of planetary motion also apply to natural satellites (e.g., moons).
• Tethys is a moon of Saturn that orbits the planet in 1.89 Earth days on average.
• Tethys's orbit is elliptical.