astronomy

Gliese 832 b

Gliese 832 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 Gliese 832 b rather than just read about it. In short: Gliese 832 b (Gl 832 b or GJ 832 b) is a gas giant exoplanet about the mass of Jupiter, located 16.2 light-years from the Sun in the constellation of Grus, orbiting the red dwarf star Gliese 832. Orbit The planet takes 10.5 years to revolve around its star at an orbital distance of 3.7 AU; at the time of discovery, this was the longest-period Jupiter-like planet known orbiting a red dwarf.

Key takeaways

Gliese 832 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 Gliese 832 b to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gliese 832 b from memory before moving on to harder problems.

Reference excerpt

Gliese 832 b (Gl 832 b or GJ 832 b) is a gas giant exoplanet about the mass of Jupiter, located 16.2 light-years from the Sun in the constellation of Grus, orbiting the red dwarf star Gliese 832.

Orbit The planet takes 10.5 years to revolve around its star at an orbital distance of 3.7 AU; at the time of discovery, this was the longest-period Jupiter-like planet known orbiting a red dwarf. The brightness of the faint parent star at that distance corresponds to the brightness of the Sun from 80 AU (or 100 times brighter than a full Moon as seen from Earth).

Discovery The planet was discovered at the Anglo-Australian Observatory on September 1, 2008. It would induce an astrometric perturbation on its star of at least 0.95 milliarcseconds and is thus a good candidate for being detected by astrometric observations. Despite its relatively large angular distance, direct imaging is problematic due to the star–planet contrast. Gliese 832 b was confirmed and its orbital solution refined by subsequent studies in 2011, 2014, and 2022. The planet was detected astrometrically by two different 2023 studies, determining its inclination and revealing a true mass close to the mass of Jupiter.

See also Epsilon Eridani b Epsilon Indi Ab

References

External links "GJ 832". Exoplanets. Archived from the original on 2009-11-25. Retrieved 2008-10-11.

Worked examples

Example 1 — a first encounter with Gliese 832 b

Start with the simplest possible case. Write down what Gliese 832 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 Gliese 832 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 Gliese 832 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 Gliese 832 b

In research: Gliese 832 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 Gliese 832 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: Gliese 832 b is common in secondary-school and first-year university syllabi. It links to neighbouring topics Exoplanet stubs, Exoplanets detected by astrometry, Exoplanets detected by radial velocity, so understanding it makes those chapters shorter.
In everyday life: Look for Gliese 832 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 Gliese 832 b in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gliese 832 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 Gliese 832 b out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Gliese 832 b in simple terms?

Gliese 832 b (Gl 832 b or GJ 832 b) is a gas giant exoplanet about the mass of Jupiter, located 16.2 light-years from the Sun in the constellation of Grus, orbiting the red dwarf star Gliese 832. Orbit The planet takes 10.5 years to revolve around its star at an orbital distance of 3.7 AU; at the t…

Why does Gliese 832 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 Gliese 832 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 Gliese 832 b.