astronomy

NGC 3106

NGC 3106 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 3106 rather than just read about it. In short: NGC 3106 is a lenticular galaxy in the constellation Leo Minor. The galaxy lies about 290 million light years away from Earth, which means, given its apparent dimensions, that NGC 3106 is approximately 100,000 light years across.

Key takeaways

NGC 3106 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 3106 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3106 from memory before moving on to harder problems.

Reference excerpt

NGC 3106 is a lenticular galaxy in the constellation Leo Minor. The galaxy lies about 290 million light years away from Earth, which means, given its apparent dimensions, that NGC 3106 is approximately 100,000 light years across. It was discovered by William Herschel on March 13, 1785.

Characteristics The galaxy is characterised as a lenticular galaxy, having a disk and a bulge. Almost 95% of the stars in the bulge are old, created more than 6 billion years ago, while the stars in the disk are younger, as 77% are older than 6 billion years. Its nucleus is active and based on its emission is characterised as a LINER. There is also some star formation taking place at the central region of the galaxy disk, but not in the bulge. The star formation at the centre of the galaxy could be the result of tidal interaction. The outer regions of the galaxy feature faint structures that resemble spiral arms. Although otherwise faint, they are the source of more than half of the H-alpha emission of the galaxy. HII regions have been detected in these spiral features, indicating they are locations of active star formation. The star formation rate is estimated to be 0.1–0.3 M☉ per year. The innermost star formation ring has a radius of 20 arcseconds while the galaxy has a series of rings.

Supernovae Four supernovae have been discovered in NGC 3106:

SN 1983J (type unknown, mag. 16.0) was discovered by Russian astronomer Natalya Metlova on 8 April 1983. SN 2009gt (type unknown, mag. 16.1) was discovered by the Catalina Real-time Transient Survey on 25 June 2009. SN 2021aewn (Type II, mag. 18.658) was discovered by ATLAS on 18 November 2021. SN 2025aauj (Type Ia, mag. 17.6858) was discovered by the Zwicky Transient Facility on 18 October 2025.

Nearby galaxies NGC 3106 is a field galaxy, meaning it doesn't belong in a galaxy group. Seven dwarf companion galaxies have been found in its vicinity. Other nearby galaxies include NGC 3116 and UGC 5481.

References

External links

NGC 3106 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images

Illustrations

Worked examples

Example 1 — a first encounter with NGC 3106

Start with the simplest possible case. Write down what NGC 3106 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 3106 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 3106 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 3106

In research: NGC 3106 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 3106 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 3106 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1785, Discoveries by William Herschel, LINER galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3106 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 3106 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3106 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 3106 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3106 in simple terms?

Why does NGC 3106 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 3106?

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 3106.