astronomy

HIP 107773

HIP 107773 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 HIP 107773 rather than just read about it. In short: HIP 107773 is a star located 344 light years from Earth in the southern constellation Indus. It is classified as a horizontal branch K-type giant star, having a spectral type K0III and a radius of 11.6 R☉.

Key takeaways

HIP 107773 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect HIP 107773 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of HIP 107773 from memory before moving on to harder problems.

Reference excerpt

HIP 107773 is a star located 344 light years from Earth in the southern constellation Indus. It is classified as a horizontal branch K-type giant star, having a spectral type K0III and a radius of 11.6 R☉. With an apparent magnitude of 5.6, the star can be faintly seen with the naked eye. It has an exoplanet, HIP 107773 b, a gas giant orbiting it at a distance of 0.72 astronomical units (108,000,000 km), about the same distance from Venus to the Sun.

Characteristics HIP 107773 is a giant star, having a spectral type K0III, where K0 means it is a K-type star and III (luminosity class) means it is a giant star. The star is in the horizontal branch phase of evolution. HIP 107773 has a radius equivalent to 11.6 solar radii, and a mass equivalent to about 2.4 solar masses. It is cooler than the Sun, having an effective temperature of 4,945 K (4,672 °C). Given the mass and the evolutionary stage of the star, its age is estimated to be at least about one billion years.

Planetary system HIP 107773 has an exoplanet, HIP 107773 b, discovered in 2015 using the radial velocity method. The planet is classified as a gas giant, having a minimum mass of 2 MJ and an estimated radius of 1.19 RJ. It orbits its star at a distance of 0.72 astronomical units (108,000,000 km), about the same distance as Venus is from the Sun, and completes one orbit every 144 days (0.39 years). Its orbit is almost circular, with an eccentricity of just 0.09. With a mass of 2.4 M☉, the star HIP 107773 is one of the most massive stars with a close-in planet.

See also List of exoplanets discovered in 2015 List of stars in Indus

Notes

Notes and references

Illustrations

Worked examples

Example 1 — a first encounter with HIP 107773

Start with the simplest possible case. Write down what HIP 107773 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 HIP 107773 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 HIP 107773 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 HIP 107773

In research: HIP 107773 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 HIP 107773 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: HIP 107773 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Henry Draper Catalogue objects, Hipparcos objects, Indus (constellation), so understanding it makes those chapters shorter.
In everyday life: Look for HIP 107773 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 HIP 107773 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what HIP 107773 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 HIP 107773 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is HIP 107773 in simple terms?

Why does HIP 107773 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 HIP 107773?

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 HIP 107773.