astronomy

NGC 4411

NGC 4411 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 4411 rather than just read about it. In short: NGC 4411 (also known as NGC 4411A) is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 1,616±24 km/s, which corresponds to a Hubble distance of 77.7 ± 5.5 Mly (23.83 ± 1.70 Mpc).

Key takeaways

NGC 4411 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 4411 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 4411 from memory before moving on to harder problems.

Reference excerpt

NGC 4411 (also known as NGC 4411A) is a barred spiral galaxy in the constellation of Virgo. Its velocity with respect to the cosmic microwave background is 1,616±24 km/s, which corresponds to a Hubble distance of 77.7 ± 5.5 Mly (23.83 ± 1.70 Mpc). However, five non-redshift measurements give a closer distance of 51.66 ± 4.59 Mly (15.840 ± 1.408 Mpc). It was discovered by German–American astronomer Christian Heinrich Friedrich Peters in 1881. It was also observed by German astronomer Friedrich Karl Arnold Schwassmann on 23 January 1900, resulting in it being listed in the Index Catalogue as IC 3339. There was a longstanding confusion of identification between this galaxy and the neighboring spiral galaxy NGC 4411B. NGC 4411 and NGC 4411B form a pair of galaxies, referred to as KPG 336. Both galaxies are members of the Virgo Cluster.

See also List of NGC objects (4001–5000)

References

External links Media related to NGC 4411 at Wikimedia Commons NGC 4411 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 4411

Start with the simplest possible case. Write down what NGC 4411 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 4411 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 4411 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 4411

In research: NGC 4411 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 4411 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 4411 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1881, Barred spiral galaxies, IC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 4411 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 4411 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 4411 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 4411 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 4411 in simple terms?

Why does NGC 4411 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 4411?

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 4411.