astronomy

NGC 2196

NGC 2196 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 2196 rather than just read about it. In short: NGC 2196 is an unbarred spiral galaxy in the constellation Lepus. The galaxy lies about 100 million light years away from Earth based on redshift independent methods, which means, given its apparent dimensions, that NGC 2196 is approximately 85,000 light years across.

Key takeaways

NGC 2196 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 2196 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 2196 from memory before moving on to harder problems.

Reference excerpt

NGC 2196 is an unbarred spiral galaxy in the constellation Lepus. The galaxy lies about 100 million light years away from Earth based on redshift independent methods, which means, given its apparent dimensions, that NGC 2196 is approximately 85,000 light years across. It was discovered by William Herschel on November 20, 1784. NGC 2196 has a bright nucleus surrounded by a large elliptical bulge. Around the bulge lies a low-surface-brightness disk. Spiral arms are visible in the central 30 arcseconds of the disk. The disk has tightly wound spiral arms and the outer arms have a grand design pattern. The outer arms form a pseudoring measuring 1.5 by 1.4 arcminutes. The galaxy is slightly asymmetric. One transient has been discovered in NGC 2196, PSN J06120295-2149353. It was discovered on 20 January 2014 using the Katzman Automatic Imaging Telescope and upon discovery had an apparent magnitude of 18 in red wavelengths. Its classification is uncertain and could be a supernova or variable star in our galaxy. NGC 2196 is the foremost galaxy of the NGC 2196 Group, which also includes NGC 2211, and NGC 2212.

References

External links

NGC 2196 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Illustrations

Worked examples

Example 1 — a first encounter with NGC 2196

Start with the simplest possible case. Write down what NGC 2196 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 2196 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 2196 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 2196

In research: NGC 2196 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 2196 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 2196 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1784, Discoveries by William Herschel, Lepus (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for NGC 2196 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 2196 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 2196 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 2196 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 2196 in simple terms?

Why does NGC 2196 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 2196?

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 2196.