astronomy

Kepler-102

Kepler-102 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-102 rather than just read about it. In short: Kepler-102 is a star 353 light-years (108 parsecs) away in the constellation of Lyra. Kepler-102 is less luminous than the Sun.

Key takeaways

Kepler-102 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-102 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kepler-102 from memory before moving on to harder problems.

Reference excerpt

Kepler-102 is a star 353 light-years (108 parsecs) away in the constellation of Lyra. Kepler-102 is less luminous than the Sun. The star system does not contain any observable amount of dust. Kepler-102 is suspected to be orbited by a binary consisting of two red dwarf stars, at projected separations of 591 and 627 AU.

Planetary system In January 2014, a system of five planets around the star was announced, three of them being smaller than Earth. While 3 of the transit signals were discovered during the first year of the Kepler mission, their small size made them hard to confirm as possibilities of these being false positives were needed to be removed. Later, two other signals were detected. Follow-up radial velocity data helped to determine the mass of the two largest planets (Kepler-102d and Kepler-102e). By 2017, the search for additional planets utilizing the transit-timing variation method had yielded zero results, although the presence of planets with semimajor axis beyond 10 AU cannot be excluded.

See also 55 Cancri Kepler-37 Kepler-20 Kepler-33

References

Worked examples

Example 1 — a first encounter with Kepler-102

Start with the simplest possible case. Write down what Kepler-102 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-102 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-102 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-102

In research: Kepler-102 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-102 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-102 is common in secondary-school and first-year university syllabi. It links to neighbouring topics K-type main-sequence stars, Kepler objects of interest, Lyra, so understanding it makes those chapters shorter.
In everyday life: Look for Kepler-102 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.

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How to study Kepler-102 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kepler-102 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-102 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kepler-102 in simple terms?

Kepler-102 is a star 353 light-years (108 parsecs) away in the constellation of Lyra. Kepler-102 is less luminous than the Sun.

Why does Kepler-102 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-102?

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-102.