astronomy

OGLE-TR-111b

OGLE-TR-111b 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 OGLE-TR-111b rather than just read about it. In short: OGLE-TR-111b is an extrasolar planet approximately 5,000 light-years away in the constellation of Carina (the Keel). The planet is currently the only confirmed planet orbiting the star OGLE-TR-111 (though a possible second planet is plausible).

Key takeaways

OGLE-TR-111b belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect OGLE-TR-111b to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of OGLE-TR-111b from memory before moving on to harder problems.

Reference excerpt

OGLE-TR-111b is an extrasolar planet approximately 5,000 light-years away in the constellation of Carina (the Keel). The planet is currently the only confirmed planet orbiting the star OGLE-TR-111 (though a possible second planet is plausible). In 2002 the Optical Gravitational Lensing Experiment (OGLE) survey detected that the light from the star periodically dimmed very slightly every 4 days, indicating a planet-sized body transiting the star. But since the mass of the object had not been measured, it was not clear that it was a true planet, low-mass red dwarf or something else. In 2004 radial velocity measurements showed unambiguously that the transiting body is indeed a planet. The planet is probably very similar to the other hot Jupiters orbiting nearby stars. Its mass is about half that of Jupiter and it orbits the star at a distance less than 1/20th that of Earth from the Sun. OGLE-TR-111b has similar mass and orbital distance as the first transiting planet, HD 209458 b (Osiris). But unlike it, the planet has a radius comparable to Jupiter which is typical to other transiting planets detected by OGLE. However, those other planets tend to be more massive and orbit even closer than typical hot Jupiters. Therefore, this planet is an important "missing link" between the different types of transiting planets.

See also HD 209458 b Lists of exoplanets OGLE-2005-BLG-390Lb OGLE-TR-10b OGLE-TR-56b OGLE-TR-113b OGLE2-TR-L9b Optical Gravitational Lensing Experiment WASP-11b/HAT-P-10b

References

External links Media related to OGLE-TR-111b at Wikimedia Commons

Illustrations

Worked examples

Example 1 — a first encounter with OGLE-TR-111b

Start with the simplest possible case. Write down what OGLE-TR-111b 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 OGLE-TR-111b 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 OGLE-TR-111b 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 OGLE-TR-111b

In research: OGLE-TR-111b 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 OGLE-TR-111b 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: OGLE-TR-111b is common in secondary-school and first-year university syllabi. It links to neighbouring topics Carina (constellation), Exoplanets discovered in 2002, Giant planets, so understanding it makes those chapters shorter.
In everyday life: Look for OGLE-TR-111b 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.

Affiliate

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

How to study OGLE-TR-111b in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what OGLE-TR-111b 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 OGLE-TR-111b out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is OGLE-TR-111b in simple terms?

Why does OGLE-TR-111b 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 OGLE-TR-111b?

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 OGLE-TR-111b.