astronomy

NGC 3806

NGC 3806 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 3806 rather than just read about it. In short: NGC 3806 is an intermediate spiral galaxy located in the constellation Leo. Its velocity relative to the cosmic microwave background is 3829 ± 24 km/s, which corresponds to a Hubble distance of 56.5 ± 4.0 Mpc (~184 million ly).

Key takeaways

NGC 3806 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 3806 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3806 from memory before moving on to harder problems.

Reference excerpt

NGC 3806 is an intermediate spiral galaxy located in the constellation Leo. Its velocity relative to the cosmic microwave background is 3829 ± 24 km/s, which corresponds to a Hubble distance of 56.5 ± 4.0 Mpc (~184 million ly). NGC 3806 was discovered by Prussian astronomer Heinrich d'Arrest in 1862. Opinions differ on the classification of NGC 3806. The NASA/IPAC and LEDA databases list it as an intermediate spiral and Professor Seligman and Wolfgang Steinicke call it a barred spiral. The luminosity class of NGC 3806 is II and it has a broad HI line.

NGC 3800 group The galaxy NGC 3806 is part of the NGC 3800 group. This group of galaxies has at least 16 members. Other New General Catalogue galaxies in this group are NGC 3768, NGC 3790, NGC 3799, NGC 3800, NGC 3801, NGC 3802, NGC 3827 and NGC 3853. Other galaxies in the group are UGC 6631, UGC 6653, UGC 6666, UGC 6794, MCG 3-30-33 and MCG 3-30-38.

See also List of NGC objects (3001–4000)

External links NGC 3806 at NASA/IPAC NGC 3806 at SIMBAD NGC 3806 at LEDA (FR) NGC 3806 at SEDS https://telescopius.com/NGC3806study

References

Illustrations

Worked examples

Example 1 — a first encounter with NGC 3806

Start with the simplest possible case. Write down what NGC 3806 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 3806 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 3806 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 3806

In research: NGC 3806 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 3806 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 3806 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1862, Intermediate spiral galaxies, Leo (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3806 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 3806 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3806 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 3806 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3806 in simple terms?

Why does NGC 3806 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 3806?

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 3806.