astronomy

HD 13931 b

HD 13931 b 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 HD 13931 b rather than just read about it. In short: HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 155 light years away in the constellation Andromeda. This planet takes 11.55 years to orbit the star at the average distance of 5.15 AU or 770 million km.

Key takeaways

HD 13931 b belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect HD 13931 b to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of HD 13931 b from memory before moving on to harder problems.

Reference excerpt

HD 13931 b (also known as HIP 10626 b) is an extrasolar planet which orbits the G-type star HD 13931, located approximately 155 light years away in the constellation Andromeda. This planet takes 11.55 years to orbit the star at the average distance of 5.15 AU or 770 million km. The planet's eccentricity (0.02) is about the same as Earth. The orbital distance for this planet ranges from 5.05 to 5.25 AU. This planet was discovered by using radial velocity method from spectrograph taken at Keck Observatory on November 13, 2009. In 2023, the inclination and true mass of HD 13931 b were measured via astrometry.

See also Other planets that were discovered or confirmed on November 13, 2009:

HD 34445 b HD 126614 Ab Gliese 179 b

References

Jean Schneider (2011). "Notes for Planet HD 13931 b". Extrasolar Planets Encyclopaedia. Retrieved 29 September 2011.

Worked examples

Example 1 — a first encounter with HD 13931 b

Start with the simplest possible case. Write down what HD 13931 b 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 HD 13931 b 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 HD 13931 b 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 HD 13931 b

In research: HD 13931 b 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 HD 13931 b 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: HD 13931 b is common in secondary-school and first-year university syllabi. It links to neighbouring topics Andromeda (constellation), Exoplanet stubs, Exoplanets detected by astrometry, so understanding it makes those chapters shorter.
In everyday life: Look for HD 13931 b 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 HD 13931 b in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what HD 13931 b 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 HD 13931 b out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HD 13931 b in simple terms?

Why does HD 13931 b 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 HD 13931 b?

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 HD 13931 b.