astronomy

SDSS J121143.17+080108.3

SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3 rather than just read about it. In short: SDSS J121143.17+080108.3 also known as OGC 92, is a radio galaxy located in the constellation of Virgo. The redshift of the galaxy is (z) 0.248 and it was first discovered as a discrete astronomical radio source from the 87GB Catalogue of Radio Sources by astronomers in April 1991.

Key takeaways

SDSS J121143.17+080108.3 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect SDSS J121143.17+080108.3 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of SDSS J121143.17+080108.3 from memory before moving on to harder problems.

Reference excerpt

SDSS J121143.17+080108.3 also known as OGC 92, is a radio galaxy located in the constellation of Virgo. The redshift of the galaxy is (z) 0.248 and it was first discovered as a discrete astronomical radio source from the 87GB Catalogue of Radio Sources by astronomers in April 1991.

Description SDSS J121143.17+080108.3 is a supergiant elliptical galaxy with a Type E galaxy morphology. It is also a red luminous galaxy residing as the brightest cluster galaxy (BCG) in the center of the galaxy cluster, WHL J121143.2+080108, with 47 confirmed galaxy member candidates. The total r-band magnitude of the galaxy is 16.44 magnitude and the total infrared i-band luminosity is estimated to be 24.32 × 1010 L☉. The absolute magnitude of the galaxy is -24.16. A total stellar mass of 11.51 h−2 M☉ has been calculated for the galaxy. Its nucleus is active and it has been categorized as an ordinary Fanaroff-Riley Class Type I radio galaxy with its total radio flux density estimated as 85.00 mJy at 1.4 GHz frequencies by NRAO VLA Sky Survey (NVSS). The radio power at 1.4 GHz is 15.82 × 1024 WHz−1. The size of the source is approximately 33.63 arcseconds. A study published in 2018 has calculated the 1.4 GHz flux density is 87.1 mJy and the radio luminosity is 25.19 WH z−1.

References

External links SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3

Start with the simplest possible case. Write down what SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3

In research: SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3 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: SDSS J121143.17+080108.3 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Astronomical objects discovered in 1991, Elliptical galaxies, so understanding it makes those chapters shorter.
In everyday life: Look for SDSS J121143.17+080108.3 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 “SDSS J121143.17+080108.3” →

Affiliate

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

How to study SDSS J121143.17+080108.3 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is SDSS J121143.17+080108.3 in simple terms?

Why does SDSS J121143.17+080108.3 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 SDSS J121143.17+080108.3?

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 SDSS J121143.17+080108.3.