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NGC 6541

NGC 6541 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 6541 rather than just read about it. In short: NGC 6541 (also known as Caldwell 78) is a globular cluster of stars in the southern constellation of Corona Australis. The globular cluster was discovered by Niccolò Cacciatore at the Palermo Astronomical Observatory, Sicily, on March 19, 1826.

NGC 6541 — main illustration
NGC 6541 — illustration

Key takeaways

  • NGC 6541 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 6541 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of NGC 6541 from memory before moving on to harder problems.

Reference excerpt

NGC 6541 (also known as Caldwell 78) is a globular cluster of stars in the southern constellation of Corona Australis. The globular cluster was discovered by Niccolò Cacciatore at the Palermo Astronomical Observatory, Sicily, on March 19, 1826. It was independently found by James Dunlop on July 3, 1826. The cluster has an apparent visual magnitude of 6.3 and an angular diameter of 15′. It is visible with binoculars or a small telescope. Located at a distance of 24.8 kly (7.6 kpc) from the Sun, it is orbiting within the central region of the Milky Way about 7.2 kly (2.2 kpc) from the Galactic Center. It is considered a metal-poor inner halo cluster, being the third most metal-poor globular cluster within 9.8 kly (3 kpc) of the center. The cluster has 5.72×105 times the mass of the Sun. It is estimated to be around 12.9 billion years old, and is believed to have undergone core collapse. A total of 94 blue straggler members have been identified, as well as three W Ursae Majoris and nine SX Phoenicis variables.

References

External links Media related to NGC 6541 at Wikimedia Commons NGC 6541 at SEDS NGC objects pages NGC 6541 at DOCdb (Deep Sky Observer's Companion)

NGC 6541 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Illustrations

NGC 6541 illustration

Worked examples

Example 1 — a first encounter with NGC 6541

Start with the simplest possible case. Write down what NGC 6541 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 6541 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 6541 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 6541

In research
NGC 6541 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 6541 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 6541 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1826, Caldwell objects, Corona Australis, so understanding it makes those chapters shorter.
In everyday life
Look for NGC 6541 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 6541 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what NGC 6541 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain NGC 6541 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 6541 in simple terms?

NGC 6541 (also known as Caldwell 78) is a globular cluster of stars in the southern constellation of Corona Australis. The globular cluster was discovered by Niccolò Cacciatore at the Palermo Astronomical Observatory, Sicily, on March 19, 1826.

Why does NGC 6541 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 6541?

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 6541.

Tags

  • Astronomical objects discovered in 1826
  • Caldwell objects
  • Corona Australis
  • Globular clusters
  • NGC objects

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