astronomy

NGC 3223

NGC 3223 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 NGC 3223 rather than just read about it. In short: NGC 3223 is a faint spiral galaxy in the constellation Antlia. It was discovered on February 2, 1835 by the English astronomer John Herschel.

Key takeaways

NGC 3223 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect NGC 3223 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3223 from memory before moving on to harder problems.

Reference excerpt

NGC 3223 is a faint spiral galaxy in the constellation Antlia. It was discovered on February 2, 1835 by the English astronomer John Herschel. The galaxy lies at a distance of approximately 110 million light years away and is receding with a heliocentric radial velocity of 2,896 km/s.

Morphology The morphological class of NGC 3223 is SA(s)b, indicating it is a spiral with no central bar (SA), no inner ring feature, and moderately tightly wound spiral arms. The galactic plane is inclined at an angle of 46° to the line of sight from the Earth, with the major axis along a position angle of 128°. It has at least two well-defined arms and is flocculent in appearance.

NGC 3223 group NGC 3223 is the brightest and largest member of a galaxy group named after it. There are 16 members including NGC 3224, NGC 3258, NGC 3268, NGC 3289, IC 2552, IC 2559 and IC 2560. Together, the NGC 3223 Group forms a part of the Antlia Cluster.

References

External links "Results for object NGC 3223 (NGC 3223)". NASA/IPAC Extragalactic Database. California Institute of Technology. Retrieved 2021-02-19.

Illustrations

Worked examples

Example 1 — a first encounter with NGC 3223

Start with the simplest possible case. Write down what NGC 3223 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 NGC 3223 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 NGC 3223 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 NGC 3223

In research: NGC 3223 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 NGC 3223 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: NGC 3223 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Antlia, Astronomical objects discovered in 1835, IC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3223 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 NGC 3223 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3223 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 NGC 3223 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3223 in simple terms?

NGC 3223 is a faint spiral galaxy in the constellation Antlia. It was discovered on February 2, 1835 by the English astronomer John Herschel.

Why does NGC 3223 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 NGC 3223?

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 NGC 3223.