astronomy

HIP 41378 f

HIP 41378 f 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 HIP 41378 f rather than just read about it. In short: HIP 41378 f (also known as EPIC 211311380 f) is an exoplanet orbiting around the F-type star HIP 41378. It is the outermost planet of its system and notable for the possibility that the planet may host circumplanetary debris rings.

Key takeaways

HIP 41378 f belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect HIP 41378 f to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of HIP 41378 f from memory before moving on to harder problems.

Reference excerpt

HIP 41378 f (also known as EPIC 211311380 f) is an exoplanet orbiting around the F-type star HIP 41378. It is the outermost planet of its system and notable for the possibility that the planet may host circumplanetary debris rings. It is located within the optimistic habitable zone of its parent star. A 2023 study analyzed the orbital stability and detectability of a hypothetical Mars-sized exomoon orbiting HIP 41378 f, finding that the existence of such a moon is feasible but is currently unlikely to be detectable.

Potential ring system HIP 41378 f has an anomalously large radius (9.2 R🜨) for a planet of its size and temperature. This radius, combined with its measured mass of (12 M🜨), suggest that its core has a maximum mass of 3 M🜨 and subsequently the planet has an envelope fraction of 75% or greater. This envelope fraction is larger than would be possible in the core accretion model of planet formation for a planet with its core mass, which is consistent with the hypothesis that the planet's radius may be observed to be larger than it actually is due to an optically thick ring system. Said ring system would have a density roughly equivalent to that of water, indicating that if it exists it is composed of porous rocky material. A 2026 study revised the mass of HIP 41378 f upwards, to 25 M🜨, which still makes it a super-puff with a density of 0.16 g/cm3, and makes the ring hypothesis still plausible. One proposed origin for such a ring system is an exomoon, which migrated outwards and had its eccentricity raised until it got tidally disrupted. No atmospheric signatures were found as of 2022, further reinforcing the hypothesis of opaque circumplanetary rings.

See also Lists of exoplanets GJ 1132 b, rocky exoplanet without atmosphere. Mu Arae c, in the constellation Ara Planetary system Exomoon

References

Worked examples

Example 1 — a first encounter with HIP 41378 f

Start with the simplest possible case. Write down what HIP 41378 f 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 HIP 41378 f 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 HIP 41378 f 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 HIP 41378 f

In research: HIP 41378 f 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 HIP 41378 f 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: HIP 41378 f is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cancer (constellation), Exoplanets discovered in 2016, Giant planets in the habitable zone, so understanding it makes those chapters shorter.
In everyday life: Look for HIP 41378 f 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 “HIP 41378 f” →

Affiliate

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

How to study HIP 41378 f in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what HIP 41378 f 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 HIP 41378 f out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HIP 41378 f in simple terms?

Why does HIP 41378 f 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 HIP 41378 f?

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 HIP 41378 f.