astronomy

LHS 1478

LHS 1478 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 1478 rather than just read about it. In short: LHS 1478 (also known as TOI-1640) is a M3V-type main sequence star located 59.4 light-years from Earth in the constellation of Cassiopeia. It has a mass of 0.24 solar masses and a radius of 0.25 solar radii.

Key takeaways

LHS 1478 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 1478 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of LHS 1478 from memory before moving on to harder problems.

Reference excerpt

LHS 1478 (also known as TOI-1640) is a M3V-type main sequence star located 59.4 light-years from Earth in the constellation of Cassiopeia. It has a mass of 0.24 solar masses and a radius of 0.25 solar radii. It has an effective temperature of 3381 Kelvin. The star is fairly inactive with no major flaring activity.

Planetary system There is currently only one known exoplanet orbiting around the star named LHS 1478 b. It is a hot super-Earth with a mass of 2.33 Earths and a radius of 1.24 Earths. It has an equilibrium temperature of about ~595 K. James Webb Space Telescope observations disfavor the possibility of a low-albedo bare rock, suggesting that the planet either has an atmosphere or a high albedo.

References

Worked examples

Example 1 — a first encounter with LHS 1478

Start with the simplest possible case. Write down what LHS 1478 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 1478 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 1478 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 1478

In research: LHS 1478 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 1478 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 1478 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cassiopeia (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 1478 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.

Affiliate

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

How to study LHS 1478 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what LHS 1478 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 1478 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is LHS 1478 in simple terms?

Why does LHS 1478 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 1478?

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 1478.