astronomy

J114403.9+440022.0

J114403.9+440022.0 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 J114403.9+440022.0 rather than just read about it. In short: J114403.9+440022.0 also known as OGC 266, J114403+440021 and RGZ J114403.8+440021 is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.299.

Key takeaways

J114403.9+440022.0 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect J114403.9+440022.0 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of J114403.9+440022.0 from memory before moving on to harder problems.

Reference excerpt

J114403.9+440022.0 also known as OGC 266, J114403+440021 and RGZ J114403.8+440021 is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.299.

Description J114403.9+440022.0 is an elliptical galaxy residing as the brightest cluster galaxy of the WHL J114403.9+440022 galaxy cluster with 14 confirmed galaxy member candidates. The R-band magnitude of the galaxy is estimated to be 17.22 while the absolute magnitude of the galaxy is -23.70. The galaxy is also designated as 7C B114125.4+441658 in the Seventh Cambridge Survey with its central supermassive black hole mass estimated as 9.09 M☉. There are detections of both hydrogen-alpha and doubly ionized oxygen emission lines with line luminosities estimated as 0.000 and 7.111 L☉. The g–r color value is 1.68 magnitude. The nucleus is found to be active and it has been categorized as a Fanaroff-Riley Class Type II radio galaxy with a bent-tail FR II-like radio source with the total radio flux density being estimated to be 49.60 mJy at 1.4 GHz frequencies by NRAO VLA Sky Survey (NVSS) and has radio luminosity of 14.1 × 1024 W Hz−1. Both of the radio lobes are found to be resolved with a projected length of 125.3 and 145.4 kiloparsecs respectively. The lobes also have an angular separation of 16.7 and 19.4 arcseconds. There is a presence of a radio core but no detections of hotspot features. The total angular size is found to be 55 arcseconds while the linear size is 244.54 kiloparsecs. A study published in 2025, has found it is a wide-angle-tail radio galaxy. There are presence of radio jets with the opening angle estimated to be 145.6° while the curvature radius is 65.8 arcseconds in total. The jet power has been calculated to be 44.65 erg s−1. An angular size of the source has been measured to be 63 arcseconds whereas the largest linear size is 289.0 kiloparsecs. The spectral index is estimated as 0.78α. Evidence also found the source is indeed bend with its bending angle calculated to be 11.0°.

References

External links J114403.9+440022.0 on WikiSky: DSS2, SDSS, GALEX, IRAS, Hydrogen α, X-Ray, Astrophoto, Sky Map, Articles and images J114403.9+440022.0 on HyperLeda

Illustrations

Worked examples

Example 1 — a first encounter with J114403.9+440022.0

Start with the simplest possible case. Write down what J114403.9+440022.0 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 J114403.9+440022.0 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 J114403.9+440022.0 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 J114403.9+440022.0

In research: J114403.9+440022.0 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 J114403.9+440022.0 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: J114403.9+440022.0 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Active galaxies, Elliptical galaxies, LEDA objects, so understanding it makes those chapters shorter.
In everyday life: Look for J114403.9+440022.0 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 J114403.9+440022.0 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what J114403.9+440022.0 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 J114403.9+440022.0 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is J114403.9+440022.0 in simple terms?

J114403.9+440022.0 also known as OGC 266, J114403+440021 and RGZ J114403.8+440021 is a radio galaxy located in the constellation of Ursa Major. The redshift of the galaxy is (z) 0.299.

Why does J114403.9+440022.0 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 J114403.9+440022.0?

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 J114403.9+440022.0.