astronomy

Omicron Aquilae

Omicron Aquilae 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 Omicron Aquilae rather than just read about it. In short: Omicron Aquilae is a double star in the equatorial constellation of Aquila. Its name is a Bayer designation that is Latinized from ο Aquilae, and abbreviated Omicron Aql or ο Aql.

Key takeaways

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

Reference excerpt

Omicron Aquilae is a double star in the equatorial constellation of Aquila. Its name is a Bayer designation that is Latinized from ο Aquilae, and abbreviated Omicron Aql or ο Aql. The brighter component has an apparent visual magnitude of +5.11, which means it is faintly visible to the naked eye in dark suburban skies. The annual parallax shift of this star is 51.3 mas, which is equivalent to a physical distance of 63.6 light-years (19.5 parsecs) from Earth. The primary component, Omicron Aquilae A, is an F-type main sequence star with a stellar classification of F8 V. It has about 125% of the mass of the Sun and 148% of the Sun's radius. With an age of roughly 3.3 billion years, it appears to spinning at a leisurely rate with a projected rotational velocity of 3 km/s. The outer atmosphere has an effective temperature of 6,123 K, giving it the yellowish-white hue of an F-type star. In 1998, Omicron Aquilae was one of nine stars identified as experiencing a superflare. The first flare observed from Omicron Aquilae was in 1979, with a magnitude increase of 0.07 and a duration of less than five days. The second occurred in 1980, with a magnitude change of 0.09 and a duration of fifteen days. The energy released during the second flare is estimated as 9×1037 erg. There is a magnitude 12.67 common proper motion companion located at an angular separation of 22.5 arcseconds along a position angle of 221°. Based upon its matching parallax value, this corresponds to a projected separation of 431 astronomical units. (Hence, the companion is located at this separation or greater.) This is confusingly designated WDS J19510+1025C or ο Aquilae B. It is a small red dwarf star with a stellar classification of M3 V. A third star, a magnitude fainter and slightly closer to the primary, is an optical companion that appears near the primary only through a chance alignment.

References

External links HR 7560 CCDM 19510+1025 Image Omicron Aquilae

Illustrations

Worked examples

Example 1 — a first encounter with Omicron Aquilae

Start with the simplest possible case. Write down what Omicron Aquilae 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 Omicron Aquilae 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 Omicron Aquilae 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 Omicron Aquilae

In research: Omicron Aquilae 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 Omicron Aquilae 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: Omicron Aquilae is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquila (constellation), Bayer objects, Bright Star Catalogue objects, so understanding it makes those chapters shorter.
In everyday life: Look for Omicron Aquilae 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 Omicron Aquilae in 20 minutes

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

Frequently asked questions

What is Omicron Aquilae in simple terms?

Omicron Aquilae is a double star in the equatorial constellation of Aquila. Its name is a Bayer designation that is Latinized from ο Aquilae, and abbreviated Omicron Aql or ο Aql.

Why does Omicron Aquilae 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 Omicron Aquilae?

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 Omicron Aquilae.