S/2003 J 4

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-4

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 4?2003
2. What is the object classification?Irregular satellite of Jupiter
3. What is the estimated mean diameter?Approximately 2 kilometers
4. How far is S/2003 J 4 from Jupiter?It orbits about 20,900,000 kilometers from Jupiter, much farther than the big Galilean moons.
5. How long does it take for S/2003 J 4 to orbit Jupiter?It takes roughly 640 Earth days for S/2003 J 4 to complete one full orbit around Jupiter.

Irregular Satellite: A moon with a distant, often eccentric or inclined orbit, likely captured rather than formed with its planet.
Retrograde Orbit: An orbit in the opposite direction to the planet's rotation, common among irregular moons.
Semi-major Axis: The average distance of an object from the body it orbits, a key parameter in describing an orbit.