astronomy

Kepler-390c

Kepler-390c is a astronomy topic covered in the lgStudy science library. This page brings together a partial reference excerpt, illustrations, worked examples, real-world applications and a short study plan, so you can understand Kepler-390c rather than just read about it. In short: Kepler-390 c is a terrestrial exoplanet that orbits a K-type star Kepler-390. Its mass is 0.418 Earths, it takes 13.1 days to complete one orbit of its star, and is 0.101 AU from its star.

Key takeaways

Kepler-390c belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kepler-390c to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kepler-390c from memory before moving on to harder problems.

Reference excerpt

Kepler-390 c is a terrestrial exoplanet that orbits a K-type star Kepler-390. Its mass is 0.418 Earths, it takes 13.1 days to complete one orbit of its star, and is 0.101 AU from its star. Its discovery was announced in 2014. The exoplanet was discovered through transit method, where a planet crosses (transits) in front of its parent star's disk.

References

Worked examples

Example 1 — a first encounter with Kepler-390c

Start with the simplest possible case. Write down what Kepler-390c claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In astronomy, the smallest case is usually a single object, a single equation or a single measurement. Check that every symbol or term in your sentence has a meaning in that case.

Example 2 — changing one variable

Take the situation from Example 1 and change exactly one quantity: double it, halve it, or set it to zero. Predict what should happen to Kepler-390c before you calculate. Comparing your prediction with the result is the fastest way to find out whether you understand the idea or only the words.

Example 3 — an exam-style question

Typical questions about Kepler-390c ask you to (a) state it precisely, (b) apply it to given data, and (c) explain a limitation. Practise writing all three answers in under five minutes; the third part is what separates a full-mark answer from an average one.

Applications of Kepler-390c

In research: Kepler-390c appears in astronomy research whenever the underlying quantities have to be modelled precisely. Papers usually cite it as a starting assumption and then explore where it breaks down.
In technology and industry: Engineering practice reuses Kepler-390c in design rules, simulations and safety margins. Knowing the idea lets you read a specification sheet and understand why the numbers look the way they do.
In the classroom: Kepler-390c is common in secondary-school and first-year university syllabi. It links to neighbouring topics Exoplanets discovered in 2014, so understanding it makes those chapters shorter.
In everyday life: Look for Kepler-390c outside the textbook — in sport, cooking, traffic, electronics or the sky above you. An example you found yourself is remembered far longer than one you were given.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study Kepler-390c in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kepler-390c means in your own words.
Compare your version with the excerpt and mark what you missed.
Work through the three examples above with pen and paper.
Explain Kepler-390c out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kepler-390c in simple terms?

Kepler-390 c is a terrestrial exoplanet that orbits a K-type star Kepler-390. Its mass is 0.418 Earths, it takes 13.1 days to complete one orbit of its star, and is 0.101 AU from its star.

Why does Kepler-390c matter?

Because it connects several astronomy ideas at once: it gives you a definition you can apply, a quantity you can calculate, and a way to check whether a result is plausible.

How should I study Kepler-390c?

Read the excerpt, restate it from memory, then work through the examples and applications listed on this page. The five-step study plan above takes about twenty minutes.

What does this page cover?

It gives you a compact reference excerpt plus original lgStudy explanations, examples, applications and study material on Kepler-390c.