astronomy

NGC 1175

NGC 1175 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 1175 rather than just read about it. In short: NGC 1175, also known as the Peanut Galaxy, is a large lenticular galaxy located in the constellation Perseus. Its speed relative to the cosmic microwave background is 5,349 ± 19 km/s, which corresponds to a Hubble distance of 78.9 ± 5.5 Mpc (~257 million ly).

Key takeaways

NGC 1175 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 1175 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 1175 from memory before moving on to harder problems.

Reference excerpt

NGC 1175, also known as the Peanut Galaxy, is a large lenticular galaxy located in the constellation Perseus. Its speed relative to the cosmic microwave background is 5,349 ± 19 km/s, which corresponds to a Hubble distance of 78.9 ± 5.5 Mpc (~257 million ly). It was discovered by the German-British astronomer William Herschel in 1786. It is notable for odd appearance when viewed edge-on, resembling an unshelled peanut or giant "X". Astronomers think these kinds of structures began forming around 7 billion years ago. Their formation is related to the formation of galactic bars. NGC 1175 is about the same distance from the Milky Way as NGC 1177. These two galaxies form a gravitationally interacting pair. To date, a non-redshift measurement gives a distance of approximately 44,900 Mpc (~146 million ly). This value is far outside the Hubble distance values. Note that it is with the average value of independent measurements, when they exist, that the NASA/IPAC database calculates the diameter of a galaxy.

See also List of galaxies List of NGC objects (1001–2000)

External links NGC 1175 at NASA/IPAC NGC 1175 at SIMBAD NGC 1175 at SEDS NGC 1175 at LEDA

References

Illustrations

Worked examples

Example 1 — a first encounter with NGC 1175

Start with the simplest possible case. Write down what NGC 1175 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 1175 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 1175 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 1175

In research: NGC 1175 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 1175 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 1175 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Discoveries by William Herschel, Lenticular galaxies, NGC objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 1175 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 1175 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 1175 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 1175 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 1175 in simple terms?

Why does NGC 1175 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 1175?

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 1175.