astronomy

HD 110113

HD 110113 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 HD 110113 rather than just read about it. In short: HD 110113, also known as TOI-755, is a star with a pair of orbiting exoplanets in the Centaurus constellation. With an apparent visual magnitude of 10.063, it is much too faint to be viewed with the naked eye.

Key takeaways

HD 110113 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect HD 110113 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of HD 110113 from memory before moving on to harder problems.

Reference excerpt

HD 110113, also known as TOI-755, is a star with a pair of orbiting exoplanets in the Centaurus constellation. With an apparent visual magnitude of 10.063, it is much too faint to be viewed with the naked eye. The system is located at a distance from the Solar System of about 346.5 light-years (106.2 parsecs). It is drifting further away with a heliocentric radial velocity of 17 km/s. A planetary system was discovered orbiting this star in 2021. The spectrum of HD 110113 presents as a G-type main-sequence star, or yellow dwarf, with a stellar classification of G8V. It has an estimated age of four billion years and is spinning slowly with a rotation period of 20.8 days. The star is considered a solar analog, having nearly the same mass and size as the Sun. It radiating 91% of the Sun's luminosity from its photosphere at an effective temperature of 5,732 K. The star displays rotationally-modulated variability that is indicative of star spots.

Planetary system The two candidate planets orbiting TOI-755 – TOI-755b and TOI-755c – were announced in 2021. TOI-755b's temperature is over 1,570 K (1,300 °C) and TOI-755c's temperature is cooler at around 1,260 K (990 °C), which means they are Hot Neptunes.

References

Worked examples

Example 1 — a first encounter with HD 110113

Start with the simplest possible case. Write down what HD 110113 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 HD 110113 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 HD 110113 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 HD 110113

In research: HD 110113 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 HD 110113 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: HD 110113 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Centaurus, Durchmusterung objects, G-type main-sequence stars, so understanding it makes those chapters shorter.
In everyday life: Look for HD 110113 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 HD 110113 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what HD 110113 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 HD 110113 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HD 110113 in simple terms?

Why does HD 110113 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 HD 110113?

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 HD 110113.