astronomy

Masanori Hirasawa

Masanori Hirasawa 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 Masanori Hirasawa rather than just read about it. In short: Masanori Hirasawa (平沢正規, Hirasawa Masanori) is a Japanese astronomer and a prolific discoverer of asteroids. Between 1991 and 1998, he discovered 52 minor planets in collaboration with fellow observer Shohei Suzuki at Mount Nyukasa Station.

Key takeaways

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

Reference excerpt

Masanori Hirasawa (平沢正規, Hirasawa Masanori) is a Japanese astronomer and a prolific discoverer of asteroids. Between 1991 and 1998, he discovered 52 minor planets in collaboration with fellow observer Shohei Suzuki at Mount Nyukasa Station. Both astronomers are graduates of Waseda University, after which they named the asteroid 9350 Waseda in 1991. Hirasawa is also a teacher.

List of discovered minor planets

References

See also List of minor planet discoverers § M. Hirasawa

Worked examples

Example 1 — a first encounter with Masanori Hirasawa

Start with the simplest possible case. Write down what Masanori Hirasawa 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 Masanori Hirasawa 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 Masanori Hirasawa 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 Masanori Hirasawa

In research: Masanori Hirasawa 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 Masanori Hirasawa 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: Masanori Hirasawa is common in secondary-school and first-year university syllabi. It links to neighbouring topics 20th-century Japanese astronomers, Discoverers of asteroids, Discoveries by Masanori Hirasawa, so understanding it makes those chapters shorter.
In everyday life: Look for Masanori Hirasawa 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 “Masanori Hirasawa” →

Affiliate

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

How to study Masanori Hirasawa in 20 minutes

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

Frequently asked questions

What is Masanori Hirasawa in simple terms?

Why does Masanori Hirasawa 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 Masanori Hirasawa?

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 Masanori Hirasawa.