astronomy

NGC 3285B

NGC 3285B 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 3285B rather than just read about it. In short: NGC 3285B is a barred spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 3,295±26 km/s, which corresponds to a Hubble distance of 158.5 ± 11.2 Mly (48.60 ± 3.43 Mpc).

Key takeaways

NGC 3285B 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 3285B to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGC 3285B from memory before moving on to harder problems.

Reference excerpt

NGC 3285B is a barred spiral galaxy in the constellation of Hydra. Its velocity with respect to the cosmic microwave background is 3,295±26 km/s, which corresponds to a Hubble distance of 158.5 ± 11.2 Mly (48.60 ± 3.43 Mpc). However, five non-redshift measurements give a closer distance of 136.59 ± 2.83 Mly (41.880 ± 0.867 Mpc). The earliest known reference to this galaxy comes from the 1964 book, Reference Catalogue of Bright Galaxies, written by Antoinette de Vaucouleurs, Gérard de Vaucouleurs, and Harlow Shapley. Therefore, this galaxy, despite its common name, was not a part of the original New General Catalogue.

NGC 3312 group and Hydra cluster

According to A. M. Garcia, NGC 3285B is part of the NGC 3312 group (also known as LGG 210). This group of galaxies has at least 11 members, including NGC 3312, NGC 3314A, IC 2597, ESO 437-15, ESO 501-68, PGC 31441, PGC 31444, PGC 31496, PGC 31515 and PGC 31580. NGC 3285B and all galaxies in the NGC 3312 group are part of the Hydra Cluster (Abell 1060). The Hydra Cluster is the dominant cluster of the Hydra–Centaurus Supercluster.

Supernova One supernova has been observed in NGC 3285B:

SN 2023xqm (Type Ia, mag. 17.885) was discovered by ATLAS on 13 November 2023. A detailed study of this explosion confirmed its classification as a typical Type Ia supernova.

See also List of NGC objects (3001–4000)

References

External links NGC 3285B 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 3285B

Start with the simplest possible case. Write down what NGC 3285B 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 3285B 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 3285B 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 3285B

In research: NGC 3285B 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 3285B 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 3285B is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1964, Barred spiral galaxies, ESO objects, so understanding it makes those chapters shorter.
In everyday life: Look for NGC 3285B 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 3285B in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGC 3285B 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 3285B out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGC 3285B in simple terms?

Why does NGC 3285B 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 3285B?

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 3285B.