astronomy

WISE J0830+2837

WISE J0830+2837 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 J0830+2837 rather than just read about it. In short: WISE J0830+2837 (WISEA J083011.95+283716.0) is a candidate Y dwarf and one of the reddest Y dwarfs ever discovered. It was first identified as an object with high proper motion in WISE images by the volunteers Dan Caselden and Guillaume Colin of the Backyard Worlds citizen science project.

Key takeaways

WISE J0830+2837 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 J0830+2837 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WISE J0830+2837 from memory before moving on to harder problems.

Reference excerpt

WISE J0830+2837 (WISEA J083011.95+283716.0) is a candidate Y dwarf and one of the reddest Y dwarfs ever discovered. It was first identified as an object with high proper motion in WISE images by the volunteers Dan Caselden and Guillaume Colin of the Backyard Worlds citizen science project. The astronomers, led by scientist Daniella Bardalez Gagliuffi, then carried out follow-up observations with Spitzer and Hubble. The object has a distance of around 10 parsecs (33 ly) from the Solar System, calculated from a combined Spitzer+JWST parallax measurement. The researchers did detect WISE J0830+2837 with Spitzer, but not with Hubble. This implies a very red color for this object. The object might have a color in between the coldest Y-dwarf WISE 0855−0714 and other Y-dwarfs. It was therefore seen as a missing link between these two populations. But since then other cold objects in this gap were found, most notably Epsilon Indi Ab and WISE J0336−0143 B. WISE J0830+2837 is however easier to observe as it is floating alone. WISE J0830+2837 also shows a large tangential velocity of 107.9 ±16.67 km/s, which implies an old age. Assuming an age between 1 and 10 Gyrs, the team found a mass of 4–13 MJ, making the object a planetary-mass object. JWST photometry confirmed the red color by measuring the brightness with the NIRCam filters F150W and F480M, with a "color" of F150W – F480M = 9.62 mag. This work also improved the parallax, showing that it is 10% closer than previously thought. It might be a typical field dwarf, meaning it would have a metallicity similar to the sun. But it could also be superluminous, possibly supporting an old age and low metallicity and/or high gravity. A future work will present the detection of this object in the near-infrared. One JWST proposal includes it in its proposed spectroscopic observations with both NIRSpec and MIRI.

See also List of Y-dwarfs CWISE J1055+5443 another Y-dwarf discovered by volunteers of the Backyard Worlds project

References

Illustrations

Worked examples

Example 1 — a first encounter with WISE J0830+2837

Start with the simplest possible case. Write down what WISE J0830+2837 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 J0830+2837 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 J0830+2837 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 J0830+2837

In research: WISE J0830+2837 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 J0830+2837 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 J0830+2837 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cancer (constellation), Exoplanets discovered in 2020, Rogue planets, so understanding it makes those chapters shorter.
In everyday life: Look for WISE J0830+2837 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 “WISE J0830+2837” →

Affiliate

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

How to study WISE J0830+2837 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WISE J0830+2837 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 J0830+2837 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WISE J0830+2837 in simple terms?

Why does WISE J0830+2837 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 J0830+2837?

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 J0830+2837.