astronomy

WISE J1206+8401

WISE J1206+8401 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 J1206+8401 rather than just read about it. In short: WISE J1206+8401 (WISE J120604.38+840110.6, WISE 1206+8401) is a brown dwarf, discovered in 2015 with WISE and the Hubble Space Telescope. It has the spectral type Y0.

Key takeaways

WISE J1206+8401 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 J1206+8401 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WISE J1206+8401 from memory before moving on to harder problems.

Reference excerpt

WISE J1206+8401 (WISE J120604.38+840110.6, WISE 1206+8401) is a brown dwarf, discovered in 2015 with WISE and the Hubble Space Telescope. It has the spectral type Y0. The object was found to be metal-rich in a work from 2017 and the research team found a mass of 6−14 MJ. A later work from 2023 found a mass of 17±5 jupiter mass. A 2024 study observed it with JWST, using NIRSpec and MIRI spectroscopy, which concluded a mass of either 1.9 or 11.2 MJ and corresponding ages of either 80 Myr or 1.19 Gyr, using two different models. In Beiler et al. (2024), the object is not discussed in detail, but the researchers report the detection of molecular absorption features in their sample, including water vapor, methane, ammonia, carbon monoxide and carbon dioxide. None of their objects have any detection of phosphine. One paper mentions that WISE J1206+8401 does have deeper carbon dioxide and carbon monoxide features, when compared to other Y-dwarfs. This makes this Y-dwarf similar to CWISEP J1047+5457. A 2026 study found a mass of 18+2−3 MJ based on atmospherical retrievals of the brown dwarf's spectral energy distribution. The retrieved temperature and surface gravity are consistent with an age somewhat over two Gyr.

Illustrations

Worked examples

Example 1 — a first encounter with WISE J1206+8401

Start with the simplest possible case. Write down what WISE J1206+8401 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 J1206+8401 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 J1206+8401 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 J1206+8401

In research: WISE J1206+8401 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 J1206+8401 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 J1206+8401 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Astronomical objects discovered in 2015, Camelopardalis, Rogue planets, so understanding it makes those chapters shorter.
In everyday life: Look for WISE J1206+8401 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 J1206+8401 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WISE J1206+8401 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 J1206+8401 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WISE J1206+8401 in simple terms?

WISE J1206+8401 (WISE J120604.38+840110.6, WISE 1206+8401) is a brown dwarf, discovered in 2015 with WISE and the Hubble Space Telescope. It has the spectral type Y0.

Why does WISE J1206+8401 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 J1206+8401?

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 J1206+8401.