astronomy

MWC 480

MWC 480 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 MWC 480 rather than just read about it. In short: MWC 480 is a single star, about 510 light-years away in the constellation of Auriga. It is located in the Taurus-Auriga Star-Forming Region.

Key takeaways

MWC 480 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect MWC 480 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of MWC 480 from memory before moving on to harder problems.

Reference excerpt

MWC 480 is a single star, about 510 light-years away in the constellation of Auriga. It is located in the Taurus-Auriga Star-Forming Region. The name refers to the Mount Wilson Catalog of B and A stars with bright hydrogen lines in their spectra. With an apparent magnitude of 7.62, it is too faint to be seen with the naked eye.

Properties

MWC 480 is a young Herbig Ae/Be star, a class of young stars with spectral types of A or B, but are quite young and are still not main-sequence stars. MWC 480 is about 7 million years old. It is about twice the mass of the Sun, and is estimated to be about 1.67 solar radii. MWC 480 has X-ray emissions typical of a pre-main-sequence Herbig Ae/Be star but with an order of magnitude more photoelectric absorption. It has a gas-dust envelope and is surrounded by a protoplanetary disc that is about 11% the mass of the Sun. The disc is inclined about 37° towards the line of sight, on a position angle of about 148°. Astronomers using the ALMA (Atacama Large Millimeter/submillimeter Array) have found that the protoplanetary disc surrounding MWC 480 contains large amounts of methyl cyanide (CH3CN), a complex carbon-based molecule. Hydrogen cyanide (HCN) has also been detected in the disc. No signs of planet formation have yet been detected.

Planetary system In 2017, it was discovered that the brown dwarf or planet designated 2MASS J04574903+3015195 may orbit the star approximately 232,000 AU away. Later in 2021, an imaging of the gas flows in the circumstellar disk has suggested a presence of shrouded Jupiter-mass planet about 245 AU from the star.

References

External links Media related to MWC 480 at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with MWC 480

Start with the simplest possible case. Write down what MWC 480 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 MWC 480 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 MWC 480 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 MWC 480

In research: MWC 480 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 MWC 480 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: MWC 480 is common in secondary-school and first-year university syllabi. It links to neighbouring topics A-type main-sequence stars, Auriga, Durchmusterung objects, so understanding it makes those chapters shorter.
In everyday life: Look for MWC 480 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 MWC 480 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what MWC 480 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 MWC 480 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is MWC 480 in simple terms?

MWC 480 is a single star, about 510 light-years away in the constellation of Auriga. It is located in the Taurus-Auriga Star-Forming Region.

Why does MWC 480 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 MWC 480?

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 MWC 480.