astronomy

NGC 7337

NGC 7337 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 7337 rather than just read about it. In short: NGC 7337 is an barred spiral galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 6,255±27 km/s, which corresponds to a Hubble distance of 300.9 ± 21.1 Mly (92.26 ± 6.47 Mpc).

Key takeaways

NGC 7337 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 7337 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 7337 from memory before moving on to harder problems.

Reference excerpt

NGC 7337 is an barred spiral galaxy in the constellation of Pegasus. Its velocity with respect to the cosmic microwave background is 6,255±27 km/s, which corresponds to a Hubble distance of 300.9 ± 21.1 Mly (92.26 ± 6.47 Mpc). It was discovered by Irish physicist George Stoney and William Parsons, 3rd Earl of Rosse, on 10 September 1849. NGC 7337 has a possible active galactic nucleus, i.e. it has a compact region at the center of a galaxy that emits a significant amount of energy across the electromagnetic spectrum, with characteristics indicating that this luminosity is not produced by the stars.

Galaxy Groups

NGC 7337 is a member of a visual grouping known as the NGC 7331 Group of galaxies (also known as the Deer Lick Group). The members of the group, NGC 7335, NGC 7336, NGC 7337, and NGC 7340, lie far in the background at distances of approximately 300–350 million light years, compared to the group's main galaxy NGC 7331, which is much closer at a distance of approximately 44 million light years. All of the members of the NGC 7331 Group, along with NGC 7325, NGC 7326, NGC 7327, NGC 7333, NGC 7338, are listed together as Holm 795 in Erik Holmberg's A Study of Double and Multiple Galaxies Together with Inquiries into some General Metagalactic Problems, published in 1937.

Possible supernova One possible supernova has been observed in NGC 7337:

SN 1973O (type unknown, mag. 19) was discovered by Kormendy on 4 September 1973. However, a study published in 2013 concluded that this object is actually a foreground galactic variable star.

See also List of NGC objects (7001–7840) NGC 7331 Group NGC 7331 NGC 7337 NGC 7320

References

External links Media related to NGC 7337 at Wikimedia Commons NGC 7337 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 7337

Start with the simplest possible case. Write down what NGC 7337 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 7337 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 7337 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 7337

In research: NGC 7337 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 7337 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 7337 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1849, Barred spiral galaxies, Discoveries by William Parsons, 3rd Earl of Rosse, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 7337 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 7337 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 7337 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 7337 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 7337 in simple terms?

Why does NGC 7337 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 7337?

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 7337.