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WISE 0713−2917

WISE 0713−2917 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 WISE 0713−2917 rather than just read about it. In short: WISE J071322.55−291751.9 (designation abbreviated to WISE 0713−2917) is a brown dwarf of spectral class Y0, located in constellation Canis Major at approximately 30 light-years from Earth. Discovery WISE 0713−2917 was discovered in 2012 by J.

WISE 0713−2917 — main illustration
WISE 0713−2917 — illustration

Key takeaways

  • WISE 0713−2917 belongs to science; place it in that map before memorising details.
  • Learn the definition first, then one example that makes the definition concrete.
  • Connect WISE 0713−2917 to a quantity you can measure, compute or draw — that is where exam questions come from.
  • Reproduce the core statement of WISE 0713−2917 from memory before moving on to harder problems.

Reference excerpt

WISE J071322.55−291751.9 (designation abbreviated to WISE 0713−2917) is a brown dwarf of spectral class Y0, located in constellation Canis Major at approximately 30 light-years from Earth.

Discovery WISE 0713−2917 was discovered in 2012 by J. Davy Kirkpatrick and colleagues from data collected by the Wide-field Infrared Survey Explorer (WISE) in the infrared at a wavelength of 40 cm (16 in), whose mission lasted from December 2009 to February 2011. In 2012 Kirkpatrick et al. published a paper in The Astrophysical Journal, where they presented discovery of seven new found by WISE brown dwarfs of spectral type Y, among which also was WISE 0713−2917.

Distance Currently the most accurate distance estimate of WISE 0713−2917 is a trigonometric parallax, published in 2014 by Beichman et al.: 0.106 ± 0.013 arcsec, corresponding to a distance of 9.4 ± 1.2 pc (30.7 ± 3.9 ly). An improved parallax was published in 2021, placing WISE 0713−2917 at around 30 light years.

Physical properties Mass estimates are 19−33 MJ and 13−19 MJ for WISE 0713−2917 depending on the study. No evidence for it being a binary was detected.

See also Lists:

List of Y-dwarfs List of star systems within 25–30 light-years The other six discoveries of brown dwarfs, published in Kirkpatrick et al. (2012):

WISE 0146+4234 (Y0) WISE 0350−5658 (Y1) WISE 0359−5401 (Y0) WISE 0535−7500 (≥Y1) WISE 0734−7157 (Y0) WISE 2220−3628 (Y0)

References

Illustrations

WISE 0713−2917 illustration

Worked examples

Example 1 — a first encounter with WISE 0713−2917

Start with the simplest possible case. Write down what WISE 0713−2917 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 WISE 0713−2917 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 0713−2917 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 0713−2917

In research
WISE 0713−2917 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 WISE 0713−2917 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 0713−2917 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Brown dwarfs, Canis Major, WISE objects, so understanding it makes those chapters shorter.
In everyday life
Look for WISE 0713−2917 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 0713−2917 in 20 minutes

  1. Read the reference excerpt below once, without taking notes.
  2. Close the page and write down what WISE 0713−2917 means in your own words.
  3. Compare your version with the excerpt and mark what you missed.
  4. Work through the three examples above with pen and paper.
  5. Explain WISE 0713−2917 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WISE 0713−2917 in simple terms?

WISE J071322.55−291751.9 (designation abbreviated to WISE 0713−2917) is a brown dwarf of spectral class Y0, located in constellation Canis Major at approximately 30 light-years from Earth. Discovery WISE 0713−2917 was discovered in 2012 by J.

Why does WISE 0713−2917 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 WISE 0713−2917?

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 0713−2917.

Tags

  • Brown dwarfs
  • Canis Major
  • WISE objects
  • Y-type brown dwarfs

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