astronomy

WASP-161

WASP-161 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 WASP-161 rather than just read about it. In short: WASP-161, also named Tislit, is an F-type main-sequence star about 1,162 light-years (356 parsecs) away in the constellation Puppis. With an apparent magnitude of 11.1, it is much too faint to be visible to the naked eye.

Key takeaways

WASP-161 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect WASP-161 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of WASP-161 from memory before moving on to harder problems.

Reference excerpt

WASP-161, also named Tislit, is an F-type main-sequence star about 1,162 light-years (356 parsecs) away in the constellation Puppis. With an apparent magnitude of 11.1, it is much too faint to be visible to the naked eye. It hosts one known exoplanet.

Nomenclature The designation WASP-161 comes from the Wide Angle Search for Planets. This was one of the systems selected to be named in the 2019 NameExoWorlds campaign during the 100th anniversary of the IAU, which assigned each country a star and planet to be named. This system was assigned to Morocco; it was chosen because it hosts the first exoplanet with a discovery team led by a Moroccan astronomer. The approved names were Tislit for the star and Isli for the planet; they are named after the Tislit and Isli lakes in the Atlas Mountains of Morocco, near Imilchil. The names mean bride and groom in the Amazigh language, in reference to a heartbroken couple of local legend.

Planetary system The planet WASP-161b, later named Isli, is a massive hot Jupiter, discovered using the transit method as part of the Wide Angle Search for Planets (WASP). The discovery team, led by Khalid Barkaoui of Cadi Ayyad University, used other telescopes, including TRAPPIST-North at the Oukaïmeden Observatory, TRAPPIST-South, and SPECULOOS-South, to confirm the planet initially detected by WASP. The discovery was announced in 2018 along with two other planets, around the stars WASP-163 and WASP-170. A 2022 study reported evidence for transit-timing variations of WASP-161b, possibly due to orbital decay or precession, but this was not confirmed by a subsequent study in 2023.

References

Worked examples

Example 1 — a first encounter with WASP-161

Start with the simplest possible case. Write down what WASP-161 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 WASP-161 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 WASP-161 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 WASP-161

In research: WASP-161 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 WASP-161 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: WASP-161 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Durchmusterung objects, F-type main-sequence stars, Planetary systems with one confirmed planet, so understanding it makes those chapters shorter.
In everyday life: Look for WASP-161 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 WASP-161 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what WASP-161 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 WASP-161 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is WASP-161 in simple terms?

Why does WASP-161 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 WASP-161?

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 WASP-161.