astronomy

PGC 1228197

PGC 1228197 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 PGC 1228197 rather than just read about it. In short: PGC 1228197, also known as WINGS J211347.41+022834.9 and JO206, is a large spiral galaxy located 700 million light-years away towards the constellation of Aquarius. The galaxy is estimated to be at least 160,000 light-years in diameter, making it somewhat bigger than the Milky Way.

Key takeaways

PGC 1228197 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect PGC 1228197 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of PGC 1228197 from memory before moving on to harder problems.

Reference excerpt

PGC 1228197, also known as WINGS J211347.41+022834.9 and JO206, is a large spiral galaxy located 700 million light-years away towards the constellation of Aquarius. The galaxy is estimated to be at least 160,000 light-years in diameter, making it somewhat bigger than the Milky Way. With a radial velocity of 15,226 kilometers per second, it is slowly drifting away. PGC 1228197 is a member of a poor galaxy cluster called II ZW 108. It has a stellar mass of 8.5 × 1010 M○. PGC 1228197 is classified as a jellyfish galaxy. It has a lengthy tail that is ≥90 kpc wide, with ionized gas stripped from the galaxy. The galaxy is surrounded by its own magnetized intracluster medium drape. Such process is caused when it interacts with other galaxies causing it to run into intracluster medium. The galaxy then undergoes a process of ram-pressure where its gas is stripped, forming long galactic tendrils of stars. Because matter is accreted into its supermassive black hole, its active galactic nucleus is trigged.

See also IC 4141 PGC 29820 PGC 65543 ESO 137-001

References

Illustrations

Worked examples

Example 1 — a first encounter with PGC 1228197

Start with the simplest possible case. Write down what PGC 1228197 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 PGC 1228197 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 PGC 1228197 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 PGC 1228197

In research: PGC 1228197 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 PGC 1228197 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: PGC 1228197 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Aquarius (constellation), LEDA objects, Principal Galaxies Catalogue objects, so understanding it makes those chapters shorter.
In everyday life: Look for PGC 1228197 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 PGC 1228197 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what PGC 1228197 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 PGC 1228197 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is PGC 1228197 in simple terms?

Why does PGC 1228197 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 PGC 1228197?

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 PGC 1228197.