science

WD 1054−226

WD 1054−226 is a science 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 WD 1054−226 rather than just read about it. In short: WD 1054−226, also known as LP 849-31, is a relatively cool magnitude 16 white dwarf star with a hydrogen atmosphere, in the small southern constellation of Crater located approximately 117 light years away at right ascension 10h 57m and declination −22° 53′ (J2000 epoch). The name WD 1054−226 is based on the coordinates in the J1950 epoch.

Key takeaways

WD 1054−226 belongs to science; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect WD 1054−226 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WD 1054−226 from memory before moving on to harder problems.

Reference excerpt

WD 1054−226, also known as LP 849-31, is a relatively cool magnitude 16 white dwarf star with a hydrogen atmosphere, in the small southern constellation of Crater located approximately 117 light years away at right ascension 10h 57m and declination −22° 53′ (J2000 epoch). The name WD 1054−226 is based on the coordinates in the J1950 epoch. The star was recognized as a white dwarf along with 32 other nearby white dwarfs (or double white dwarfs) in 2007. In 2022 it was reported that the flux of light coming from the star varies continually due to partial obscuring by a ring. The pattern of variation repeats with little change every 25.02 hours. There are dips in the light flux every 23 minutes, exactly 65 per period of 25.02 hours. The explanation of this strong 65th harmonic is unknown and the authors of the paper say that the phenomenon is puzzling. It seems to be caused by clumps of matter orbiting the star. The researchers have hypothesized that the clumps are being influenced by a moon-sized object, possibly an exoplanet. If it has a period of 25 hours then it is orbiting in the habitable zone of the system. If this is confirmed, it would be the first time that a planet has been found orbiting in the habitable zone of a white dwarf.

See also List of exoplanets and planetary debris around white dwarfs WD 1145+017 is the first white dwarf with transiting debris discovered

References

External links

Illustrations

Worked examples

Example 1 — a first encounter with WD 1054−226

Start with the simplest possible case. Write down what WD 1054−226 claims or describes in one sentence, then invent the smallest concrete situation in which that sentence is true. In science, 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 WD 1054−226 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 WD 1054−226 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 WD 1054−226

In research: WD 1054−226 appears in science 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 WD 1054−226 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: WD 1054−226 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Crater (constellation), White dwarfs, so understanding it makes those chapters shorter.
In everyday life: Look for WD 1054−226 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 WD 1054−226 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WD 1054−226 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 WD 1054−226 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WD 1054−226 in simple terms?

Why does WD 1054−226 matter?

Because it connects several science 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 WD 1054−226?

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 WD 1054−226.