astronomy

UGC 4798

UGC 4798 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 UGC 4798 rather than just read about it. In short: UGC 4798 is a spiral galaxy in the constellation of Lynx. Its velocity with respect to the cosmic microwave background is 8,209±14 km/s, which corresponds to a Hubble distance of 394.9 ± 27.7 Mly (121.07 ± 8.48 Mpc)..

Key takeaways

UGC 4798 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect UGC 4798 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of UGC 4798 from memory before moving on to harder problems.

Reference excerpt

UGC 4798 is a spiral galaxy in the constellation of Lynx. Its velocity with respect to the cosmic microwave background is 8,209±14 km/s, which corresponds to a Hubble distance of 394.9 ± 27.7 Mly (121.07 ± 8.48 Mpc).. The first known reference to this galaxy comes from Part 1 of the Morphological Catalogue of Galaxies, published in 1962, where it is listed as MCG +08-17-038.

Supernovae Five supernovae have been observed in UGC 4798:

SN 2005mf (Type Ic, mag. 17.4) was discovered by the THCA Supernova Survey on 25 December 2005. SN 2013V (Type Ia, mag. 17.8) was discovered by T. Crowley, Jack Newton, and Tim Puckett on 6 January 2013. PSN J09084248+4448132 (Type Ia, mag. 15.8) was discovered by the Catalina Real-time Transient Survey and Stan Howerton on 26 October 2014. SN 2019cad (Type Ic, mag. 18.75) was discovered by the Zwicky Transient Facility on 17 March 2019. This supernova was double-peaked and resembled SN 2005bf. SN 2025ane (Type II, mag. 18.2563) was discovered by the Zwicky Transient Facility on 31 January 2025.

References

External links UGC 4798 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 UGC 4798

Start with the simplest possible case. Write down what UGC 4798 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 UGC 4798 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 UGC 4798 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 UGC 4798

In research: UGC 4798 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 UGC 4798 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: UGC 4798 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 1962, Lynx (constellation), MCG objects, so understanding it makes those chapters shorter.
In everyday life: Look for UGC 4798 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 UGC 4798 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what UGC 4798 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 UGC 4798 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is UGC 4798 in simple terms?

Why does UGC 4798 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 UGC 4798?

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 UGC 4798.