astronomy

LHS 3844

LHS 3844 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 LHS 3844 rather than just read about it. In short: LHS 3844, also named Batsũ̀ (Bribri pronunciation: [băˈtsṹ]), is a red dwarf star located 48.5 light-years (14.9 parsecs) away from the Solar System in the constellation of Indus. The star has about 15% the mass and 19% the radius of the Sun.

Key takeaways

LHS 3844 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect LHS 3844 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of LHS 3844 from memory before moving on to harder problems.

Reference excerpt

LHS 3844, also named Batsũ̀ (Bribri pronunciation: [băˈtsṹ]), is a red dwarf star located 48.5 light-years (14.9 parsecs) away from the Solar System in the constellation of Indus. The star has about 15% the mass and 19% the radius of the Sun. It is a relatively inactive red dwarf with a slow rotation period of about 128 days, though UV flares have been observed. LHS 3844 is orbited by one known exoplanet.

Nomenclature The designation LHS 3844 comes from the Luyten Half-Second Catalogue of stars with high proper motion. In August 2022, this planetary system was included among 20 systems to be named by the third NameExoWorlds project. The approved names, proposed by a team from Costa Rica, were announced in June 2023. LHS 3844 is named Batsũ̀ and its planet is named Kuaꞌkua, after the Bribri words for "hummingbird" and "butterfly".

Planetary system The exoplanet LHS 3844 b (later named Kuaꞌkua) was discovered in 2018 using TESS. It is a terrestrial planet 30% larger than Earth with an orbital period of less than a day, and likely does not have an atmosphere. Its low albedo suggests that its surface may resemble that of the Moon or Mercury. Observations made with the James Webb Space Telescope confirm this hypothesis. The data ruled out the presence of an atmosphere and an Earth-like crust composed of silica-rich rock such as granite. Instead, the material is likely to be around 1000 Kelvin in temperature and resembles basalt or mantle material. The absence of gaseous sulphur dioxide and carbon dioxide indicates no recent geological activity. The researchers therefore conclude that because of space weathering, the surface consists of powdery material similar to regolith. The planet's mass was measured in 2026, along with tentative evidence of a possible second planet.

References

Worked examples

Example 1 — a first encounter with LHS 3844

Start with the simplest possible case. Write down what LHS 3844 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 LHS 3844 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 LHS 3844 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 LHS 3844

In research: LHS 3844 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 LHS 3844 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: LHS 3844 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Indus (constellation), M-type main-sequence stars, Planetary systems with one confirmed planet, so understanding it makes those chapters shorter.
In everyday life: Look for LHS 3844 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 LHS 3844 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what LHS 3844 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 LHS 3844 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is LHS 3844 in simple terms?

Why does LHS 3844 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 LHS 3844?

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 LHS 3844.