astronomy

NGC 6769

NGC 6769 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 6769 rather than just read about it. In short: NGC 6769 is a peculiar spiral galaxy in the constellation of Pavo. Its velocity with respect to the cosmic microwave background is 3,807±38 km/s, which corresponds to a Hubble distance of 183.2 ± 13.1 Mly (56.16 ± 4.01 Mpc).

Key takeaways

NGC 6769 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 6769 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 6769 from memory before moving on to harder problems.

Reference excerpt

NGC 6769 is a peculiar spiral galaxy in the constellation of Pavo. Its velocity with respect to the cosmic microwave background is 3,807±38 km/s, which corresponds to a Hubble distance of 183.2 ± 13.1 Mly (56.16 ± 4.01 Mpc). It was discovered by British astronomer John Herschel on 11 August 1836. NGC 6769 along with NGC 6770 are listed as VV 304 in the catalog of Vorontsov-Vel'yaminov Interacting Galaxies. Together with NGC 6771, the grouping of the 3 galaxies is sometimes called "The Devil's Mask."

IC 4845 group NGC 6769 is a member of the IC 4845 galaxy group (also known as LGG 427), which contains 14 members, including NGC 6739, NGC 6746, NGC 6770, NGC 6782, IC 4827, IC 4828, IC 4831, IC 4838, IC 4842, IC 4845, IC 4866, and ESO 141-21.

Supernovae Two supernovae have been observed in NGC 6769:

SN 1997de (Type Ia, mag. 18.2) was discovered by Alexander Wassilieff, and independently by Brendan Downs, on 27 August 1997. SN 2006ox (type unknown, mag. 15.3) was discovered by Berto Monard on 26 November 2006.

Image gallery

See also List of NGC objects (6001–7000)

References

External links Media related to NGC 6769 at Wikimedia Commons NGC 6769 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 6769

Start with the simplest possible case. Write down what NGC 6769 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 6769 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 6769 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 6769

In research: NGC 6769 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 6769 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 6769 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1836, Discoveries by John Herschel, ESO objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 6769 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.

Ask Teacher Smith questions about this articleOpens your AI tutor with a question about “NGC 6769” →

Affiliate

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

How to study NGC 6769 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 6769 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 6769 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 6769 in simple terms?

Why does NGC 6769 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 6769?

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 6769.