astronomy

Intelsat 11

Intelsat 11 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 Intelsat 11 rather than just read about it. In short: Intelsat 11 is a communications satellite owned by Intelsat and located at 43.0° West longitude, serving the Americas market. Intelsat 11 replaced Intelsat 3R which was nearing the end of its design life.

Key takeaways

Intelsat 11 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Intelsat 11 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Intelsat 11 from memory before moving on to harder problems.

Reference excerpt

Intelsat 11 is a communications satellite owned by Intelsat and located at 43.0° West longitude, serving the Americas market. Intelsat 11 replaced Intelsat 3R which was nearing the end of its design life. Intelsat 11 was built by Orbital Sciences Corporation, as part of its STAR-2 line. Intelsat 11 was formerly known as PAS-11. It was launched 5 October 2007 by an Ariane 5 GS. Intelsat 11 is designed to deliver C-band services to Intelsat's customers in the continental United States and also serve as DirecTV Latin America's Ku-band downlink for coverage of Brazil. Intelsat 11 is designed to assume the responsibilities of current customers for Intelsat 3R. In February 2023, Intelsat announced its intent to move Intelsat 11 to a backup satellite asset and allowing the satellite to drift to an inclined geosynchronous orbit with eventual intent to retire it to a graveyard orbit.

References

External links

Intelsat 11 footprint(s) at SatBeams

Worked examples

Example 1 — a first encounter with Intelsat 11

Start with the simplest possible case. Write down what Intelsat 11 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 Intelsat 11 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 Intelsat 11 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 Intelsat 11

In research: Intelsat 11 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 Intelsat 11 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: Intelsat 11 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Communications satellite stubs, Communications satellites in geostationary orbit, Intelsat satellites, so understanding it makes those chapters shorter.
In everyday life: Look for Intelsat 11 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 Intelsat 11 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Intelsat 11 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 Intelsat 11 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Intelsat 11 in simple terms?

Why does Intelsat 11 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 Intelsat 11?

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 Intelsat 11.