astronomy

Gaia-4 b

Gaia-4 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 Gaia-4 b rather than just read about it. In short: Gaia-4 b is a massive gas giant exoplanet, classified as a super-Jupiter, orbiting the low-mass K-type star Gaia-4. Located approximately 244 light-years from Earth, it was discovered using astrometric data from the European Space Agency's Gaia mission, marking it as one of the first exoplanets confirmed through this method.

Key takeaways

Gaia-4 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 Gaia-4 b to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Gaia-4 b from memory before moving on to harder problems.

Reference excerpt

Gaia-4 b is a massive gas giant exoplanet, classified as a super-Jupiter, orbiting the low-mass K-type star Gaia-4. Located approximately 244 light-years from Earth, it was discovered using astrometric data from the European Space Agency's Gaia mission, marking it as one of the first exoplanets confirmed through this method. It has a mass of 11.8 MJ.

Discovery Gaia-4 b was identified through the Gaia mission's Data Release 3 (DR3), which detected the astrometric wobble of the host star caused by the planet's gravitational influence. Confirmation came via radial velocity measurements using ground-based spectrographs, including the Habitable-zone Planet Finder (HPF) on the Hobby-Eberly Telescope, the NEID spectrograph on the WIYN 3.5m Telescope, and the FIber-fed Echelle Spectrograph (FIES) on the Nordic Optical Telescope. These observations ruled out alternative explanations, such as a background star or binary companion, confirming Gaia-4 b as a planetary body.

Host star Gaia-4 is a K-type star located 244 ly from the Earth in the constellation Canes Venatici, with a right ascension of 13h 58m 1.62s and a declination of +31° 41′ 43.5″.

References

Illustrations

Worked examples

Example 1 — a first encounter with Gaia-4 b

Start with the simplest possible case. Write down what Gaia-4 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 Gaia-4 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 Gaia-4 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 Gaia-4 b

In research: Gaia-4 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 Gaia-4 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: Gaia-4 b is common in secondary-school and first-year university syllabi. It links to neighbouring topics Canes Venatici, Exoplanets detected by astrometry, Exoplanets detected by radial velocity, so understanding it makes those chapters shorter.
In everyday life: Look for Gaia-4 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “Gaia-4 b” →

Affiliate

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

How to study Gaia-4 b in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Gaia-4 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 Gaia-4 b out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Gaia-4 b in simple terms?

Why does Gaia-4 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 Gaia-4 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 Gaia-4 b.