astronomy

Hinotori (satellite)

Hinotori (satellite) 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 Hinotori (satellite) rather than just read about it. In short: Hinotori, also known as ASTRO-A before launch, was a Japanese X-ray astronomy satellite. It was developed by the Institute of Space and Astronautical Science (ISAS).

Key takeaways

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

Reference excerpt

Hinotori, also known as ASTRO-A before launch, was a Japanese X-ray astronomy satellite. It was developed by the Institute of Space and Astronautical Science (ISAS). Its primary mission was to study of solar flares emanating from the Sun during the solar maximum. It was launched successfully on February 21, 1981 using a M-3S rocket as the vehicle from Uchinoura Space Center (known at the time as Kagoshima). After the start of normal operation, it observed a large solar flare and, a month later, succeeded in observing 41 flares of many sizes from the Sun. It reentered the atmosphere on July 11, 1991. The name Hinotori is the Japanese word for Phoenix.

Instruments Solar flare X-ray imager (SXT) Solar soft X-ray bright line spectrum analyzer (SOX) Solar soft X-ray monitor (HXM) Solar flare monitor (FLM) Solar gamma ray monitor (SGR) Particle ray monitor (PXM) Plasma electron density measurement instrument (IMP) Plasma electron temperature measurement instrument (TEL)

Highlights Observational data of the maximum period of solar activity Discovery of high-temperature phenomena reaching up to 50 million °C and clouds of light-speed electrons floating in the corona of the Sun

References

External links

ISAS information about Hinotori

Illustrations

Worked examples

Example 1 — a first encounter with Hinotori (satellite)

Start with the simplest possible case. Write down what Hinotori (satellite) 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 Hinotori (satellite) 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 Hinotori (satellite) 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 Hinotori (satellite)

In research: Hinotori (satellite) 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 Hinotori (satellite) 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: Hinotori (satellite) is common in secondary-school and first-year university syllabi. It links to neighbouring topics Asian spacecraft stubs, Satellites of Japan, Spacecraft launched in 1981, so understanding it makes those chapters shorter.
In everyday life: Look for Hinotori (satellite) 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 Hinotori (satellite) in 20 minutes

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

Frequently asked questions

What is Hinotori (satellite) in simple terms?

Hinotori, also known as ASTRO-A before launch, was a Japanese X-ray astronomy satellite. It was developed by the Institute of Space and Astronautical Science (ISAS).

Why does Hinotori (satellite) 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 Hinotori (satellite)?

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 Hinotori (satellite).