astronomy

WISE J0254+0223

WISE J0254+0223 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 WISE J0254+0223 rather than just read about it. In short: WISEPA J025409.45+022359.1 (designation is abbreviated to WISE 0254+0223) is a brown dwarf of spectral class T8, located in constellation Cetus at approximately 22.3 light-years from Earth. It was discovered by astronomers from the Leibniz Institute for Astrophysics Potsdam.

Key takeaways

WISE J0254+0223 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect WISE J0254+0223 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WISE J0254+0223 from memory before moving on to harder problems.

Reference excerpt

WISEPA J025409.45+022359.1 (designation is abbreviated to WISE 0254+0223) is a brown dwarf of spectral class T8, located in constellation Cetus at approximately 22.3 light-years from Earth. It was discovered by astronomers from the Leibniz Institute for Astrophysics Potsdam.

History of observations

Discovery WISE 0254+0223 was discovered in 2011 from data, collected by Wide-field Infrared Survey Explorer (WISE) Earth-orbiting satellite—NASA infrared-wavelength 40 cm (16 in) space telescope, which mission lasted from December 2009 to February 2011. WISE 0254+0223 has two discovery papers: Scholz et al. (2011) and Kirkpatrick et al. (2011) (the first was published earlier).

Scholz et al. discovered two late T-type brown dwarfs, including WISE 0254+0223, using preliminary data release from WISE and follow-up near-infrared spectroscopy with LUCIFER1 near-infrared camera/spectrograph at the Large Binocular Telescope (LBT). Kirkpatrick et al. presented discovery of 98 new found by WISE brown dwarf systems with components of spectral types M, L, T and Y, among which also was WISE 0254+0223.

Distance Currently the most accurate distance estimate of WISE 0254+0223 is a trigonometric parallax, measured using the Spitzer Space Telescope and published in 2019 by Kirkpatrick et al.: 146.1±1.5 mas, corresponding to a distance 6.84±0.07 pc, or 22.3±0.2 ly. WISE 0254+0223 distance estimates

Non-trigonometric distance estimates are marked in italic. The most accurate estimate is marked in bold.

Space motion WISE 0254+0223 has a large proper motion of about 2602 milliarcseconds per year. WISE 0254+0223 proper motion estimates

The most accurate estimates are marked in bold.

See also Another object, discovered by Scholz et al. (2011):

WISE 1741+2553 (T9)

Notes

References

External links Two new nearby brown dwarfs found Archived 2011-10-30 at the Wayback Machine (Phil Plait August 9, 2011) Solstation.com (New Objects within 20 light-years)

Illustrations

Worked examples

Example 1 — a first encounter with WISE J0254+0223

Start with the simplest possible case. Write down what WISE J0254+0223 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 WISE J0254+0223 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 WISE J0254+0223 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 WISE J0254+0223

In research: WISE J0254+0223 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 WISE J0254+0223 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: WISE J0254+0223 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 2011, Brown dwarfs, Cetus (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for WISE J0254+0223 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 WISE J0254+0223 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WISE J0254+0223 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 WISE J0254+0223 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WISE J0254+0223 in simple terms?

Why does WISE J0254+0223 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 WISE J0254+0223?

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 WISE J0254+0223.