astronomy

NGC 2550A

NGC 2550A 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 2550A rather than just read about it. In short: NGC 2550A is a spiral galaxy in the constellation of Camelopardalis. Its velocity with respect to the cosmic microwave background is 3670 ± 10 km/s, which corresponds to a Hubble distance of 176.5 ± 12.4 Mly (54.12 ± 3.79 Mpc).

Key takeaways

NGC 2550A 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 2550A to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 2550A from memory before moving on to harder problems.

Reference excerpt

NGC 2550A is a spiral galaxy in the constellation of Camelopardalis. Its velocity with respect to the cosmic microwave background is 3670 ± 10 km/s, which corresponds to a Hubble distance of 176.5 ± 12.4 Mly (54.12 ± 3.79 Mpc). The discovery of this galaxy is credited to Philip C. Keenan, in his paper Studies of Extra-Galactic Nebulae. Part I: Determination of Magnitudes, published in The Astrophysical Journal in 1935. According to A.M. Garcia, NGC 2550A is a member of the NGC 2523 galaxy group (also known as LGG 154). This group contains five galaxies, including NGC 2441, NGC 2523, UGC 4041, and UGC 4199.

Supernovae Two supernovae have been observed in NGC 2550A:

SN 2008P (Type II, mag. 17.5) was discovered by Alessandro Dimai on 23 January 2008. SN 2024ws (Type II, mag. 17.8) was discovered by Kōichi Itagaki on 12 January 2024.

See also List of NGC objects (2001–3000)

References

External links NGC 2550A 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 2550A

Start with the simplest possible case. Write down what NGC 2550A 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 2550A 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 2550A 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 2550A

In research: NGC 2550A 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 2550A 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 2550A is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1935, Camelopardalis, IRAS catalogue objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 2550A 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 2550A in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 2550A 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 2550A out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 2550A in simple terms?

Why does NGC 2550A 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 2550A?

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 2550A.