S/2003 J 9

High school (ages 12+)
Space & Astronomy

Name:

Date:

Step 1 · Read the article

Open the article and read it at the level above. Then answer the questions below in your own words.

https://smallwhale.org/articles/s-2003-j-9

Write what each word means, using the article.

Do not copy the article. Write two things you learned, the way you would explain them to a friend.

Answers below are taken from the article’s stored facts, so they match what the student read.

1. Who discovered S/2003 J 9?Scott S. Sheppard et al
2. What is the object classification?Irregular natural satellite (moon)
3. What is the host planet?Jupiter
4. How big is S/2003 J 9 compared to Jupiter's other moons?It is only about 1 km in diameter, much smaller than the big Galilean moons like Io, Europa, Ganymede, and Callisto.
5. How long does it take for S/2003 J 9 to orbit Jupiter?S/2003 J 9 takes roughly 600 Earth days to complete one full orbit around Jupiter.

Irregular Moon: A moon with a distant, eccentric, and/or inclined orbit, often captured.
Gas Giant: A large planet composed primarily of hydrogen and helium, lacking a solid surface.
Orbital Eccentricity: A measure of how much an orbit deviates from a perfect circle.
Inclination: The angle between an object's orbital plane and a reference plane (e.g., a planet's equator).