astronomy

Nilesat 201

Nilesat 201 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 Nilesat 201 rather than just read about it. In short: Nilesat 201, is an Egyptian communications satellite, which was launched on 4 August 2010. Nilesat 201 will enable the Egyptian satellite operator Nilesat to deliver digital Direct to Home (DTH) TV and radio broadcasting and high-speed data transmission services to North Africa and the Middle East starting in September 2010.

Key takeaways

Nilesat 201 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Nilesat 201 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Nilesat 201 from memory before moving on to harder problems.

Reference excerpt

Nilesat 201, is an Egyptian communications satellite, which was launched on 4 August 2010. Nilesat 201 will enable the Egyptian satellite operator Nilesat to deliver digital Direct to Home (DTH) TV and radio broadcasting and high-speed data transmission services to North Africa and the Middle East starting in September 2010. It was built by Thales Alenia Space in the Cannes Mandelieu Space Center, and is based on the Spacebus 4000B2 satellite bus. It will be operated in geosynchronous orbit, at a longitude of 7° West. The spacecraft has a design life of 15 years and a mass at launch of 3.2 tonnes. It is powered by solar arrays which will generate 5.9 kilowatts of electricity at the end of the spacecraft's design life. It will carry 40 transponders, of which 24 will be Ku band for broadcasting, and 4 will be Ka band. Nilesat 201 was launched by an Ariane 5ECA rocket at 20:59 UTC on 4 August 2010.

References

External links

Arianespace: Nilesat 201 - RASCOM launch kit Nilesat 201 at International Media Switzerland

Worked examples

Example 1 — a first encounter with Nilesat 201

Start with the simplest possible case. Write down what Nilesat 201 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 Nilesat 201 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 Nilesat 201 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 Nilesat 201

In research: Nilesat 201 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 Nilesat 201 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: Nilesat 201 is common in secondary-school and first-year university syllabi. It links to neighbouring topics 2010 in Egypt, Ariane commercial payloads, Communications satellite stubs, so understanding it makes those chapters shorter.
In everyday life: Look for Nilesat 201 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 Nilesat 201 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Nilesat 201 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 Nilesat 201 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Nilesat 201 in simple terms?

Why does Nilesat 201 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 Nilesat 201?

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 Nilesat 201.