astronomy

NGC 6384

NGC 6384 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 6384 rather than just read about it. In short: NGC 6384 is an intermediate barred spiral galaxy located about 77 million light-years away in the northern part of the constellation Ophiuchus. It was discovered by German-British astronomer Albert Marth on 10 June 1863.

Key takeaways

NGC 6384 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 6384 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 6384 from memory before moving on to harder problems.

Reference excerpt

NGC 6384 is an intermediate barred spiral galaxy located about 77 million light-years away in the northern part of the constellation Ophiuchus. It was discovered by German-British astronomer Albert Marth on 10 June 1863. NGC 6384 has a morphological classification of SAB(r)bc, indicating that it is a weakly barred galaxy (SAB) with an inner ring structure (r) orbiting the bar, and moderate to loosely wound spiral arms (bc). The galaxy is inclined by an angle of 47° to the line of sight, along a position angle of 40°. The estimated mass of the stars in this galaxy is 105 billion times the mass of the Sun. At one time NGC 6384 was considered a normal galaxy with no activity in the nucleus. However, it is now classified as a transition object (T2), which is thought to be a LINER-type galaxy whose emission-line spectra is contaminated by H II regions in the nucleus.

Supernovae Three supernovae have been observed in NGC 6384:

SN 1971L (Type Ia, mag. 13) was discovered by W. Logan on 24 June 1971, located 27″ east and 20″ north of the nucleus. It reached a peak visual magnitude of 12.85 around the end of June. It was situated along a spiral arm, suggesting that the progenitor was not a member of the older, more evolved stellar population of the galaxy. SN 2017drh (Type Ia, mag. 17.9356) was discovered by the Distance Less Than 40 Mpc Survey (DLT40) on 3 May 2017. SN 2024pxl (Type Iax[02cx-like], mag. 17.668) was discovered by the Zwicky Transient Facility on 23 July 2024.

Gallery

See also List of NGC objects (6001–7000)

References

External links

NGC 6384 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images Nemiroff, R.; Bonnell, J., eds. (July 6, 2013). "NGC 6384: Spiral Beyond the Stars". Astronomy Picture of the Day. NASA. Retrieved 2013-06-06.

Illustrations

Worked examples

Example 1 — a first encounter with NGC 6384

Start with the simplest possible case. Write down what NGC 6384 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 6384 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 6384 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 6384

In research: NGC 6384 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 6384 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 6384 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1863, Barred spiral galaxies, Discoveries by Albert Marth, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 6384 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 6384 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 6384 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 6384 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 6384 in simple terms?

Why does NGC 6384 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 6384?

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 6384.