astronomy

UGC 8153

UGC 8153 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 UGC 8153 rather than just read about it. In short: UGC 8153 also referred to as Z 43-114, is a spiral galaxy of morphological type of Sd and is located in the constellation of Virgo. The galaxy is approximately 153 million light years (47 megaparsecs) away from Earth and has an apparent B magnitude of 15.2.

Key takeaways

UGC 8153 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect UGC 8153 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of UGC 8153 from memory before moving on to harder problems.

Reference excerpt

UGC 8153 also referred to as Z 43-114, is a spiral galaxy of morphological type of Sd and is located in the constellation of Virgo. The galaxy is approximately 153 million light years (47 megaparsecs) away from Earth and has an apparent B magnitude of 15.2. The first known reference to this galaxy comes from Volume I of the Catalogue of Galaxies and of Clusters of Galaxies compiled by Fritz Zwicky in 1961, where it was listed as CGCG 043-114, and described as "diffuse". UGC 8153 is a small spiral galaxy in the Virgo Cluster. It is 72,200 light years (22,150 parsecs) across based on a distance of 153 million light years (46.98 megaparsecs) and an angular diameter of 108 arcsecs. It is believed to be a very low mass galaxy with an estimated stellar mass of 10^9.8 or roughly 6 billion M☉. In the galactic center of UGC 8153 potentially has an active galactic nucleus (AGN). It is centered on a lighter intermediate-mass black hole which is predicted to have a mass of 10^4.1 or ~12,500 M☉, making it one of the least massive central black holes discovered.

See also Virgo Cluster, the galaxy cluster UGC 8153 is located in. NGC 4294, another galaxy centered on a similar mass black hole.

References

Illustrations

Worked examples

Example 1 — a first encounter with UGC 8153

Start with the simplest possible case. Write down what UGC 8153 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 UGC 8153 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 UGC 8153 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 UGC 8153

In research: UGC 8153 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 UGC 8153 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: UGC 8153 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1973, LEDA objects, Spiral galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for UGC 8153 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 UGC 8153 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what UGC 8153 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 UGC 8153 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is UGC 8153 in simple terms?

Why does UGC 8153 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 UGC 8153?

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 UGC 8153.