astronomy

NGC 4874

NGC 4874 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 4874 rather than just read about it. In short: NGC 4874 is a supergiant elliptical galaxy in the constellation of Coma Berenices. It was discovered on 11 April 1785 by German-British astronomer William Herschel, who catalogued it as a bright patch of nebulous feature.

Key takeaways

NGC 4874 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 4874 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 4874 from memory before moving on to harder problems.

Reference excerpt

NGC 4874 is a supergiant elliptical galaxy in the constellation of Coma Berenices. It was discovered on 11 April 1785 by German-British astronomer William Herschel, who catalogued it as a bright patch of nebulous feature. The second-brightest galaxy within the northern Coma Cluster, it is located at a distance of about 97 megaparsecs (316,000,000 light-years) from Earth.

Characteristics The galaxy is surrounded by an immense stellar halo that extends up to around ten times the size of the Milky Way Galaxy, somewhere roughly one million light-years in diameter. It is also enveloped by a huge cloud of interstellar medium that is currently being heated by the action of infalling material from its central supermassive black hole. A jet of highly energetic plasma extends out to 1,700 light-years from its center. The galaxy has more than 30,000 globular clusters.

Supernovae Three supernovae have been observed in NGC 4874:

SN 1968B (type unknown, mag. 17.4) was discovered by Fritz Zwicky on 3 February 1968. SN 1981G (Type Ia, mag. 15) was discovered by Miklós Lovas on 2 June 1981. SN 2025ilo (Type Ib, mag. 20.6) was discovered by A. Horti-David, K. Sarneczky, and J. Vinko on 26 April 2025.

Illustrations

Worked examples

Example 1 — a first encounter with NGC 4874

Start with the simplest possible case. Write down what NGC 4874 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 4874 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 4874 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 4874

In research: NGC 4874 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 4874 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 4874 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1785, Coma Berenices, Coma Cluster, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 4874 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.

Affiliate

Preply — study more efficiently by working with a personal tutor. 50% off.

How to study NGC 4874 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 4874 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 4874 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 4874 in simple terms?

Why does NGC 4874 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 4874?

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 4874.