astronomy

Kepler-737

Kepler-737 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 Kepler-737 rather than just read about it. In short: Kepler-737 is an M-type main-sequence red dwarf located 671 light-years away on the border of the constellation Cygnus. Physical properties General properties Kepler-737's spectral class is M0V, its temperature is about 3,813 Kelvin, and it has a brightness of 0.045 solar luminosity.

Key takeaways

Kepler-737 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect Kepler-737 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of Kepler-737 from memory before moving on to harder problems.

Reference excerpt

Kepler-737 is an M-type main-sequence red dwarf located 671 light-years away on the border of the constellation Cygnus.

Physical properties

General properties Kepler-737's spectral class is M0V, its temperature is about 3,813 Kelvin, and it has a brightness of 0.045 solar luminosity. One Kepler Object of Interest (KOI) table claimed the star to be ~14 billion years old. As for the logarithm of the relative abundance of iron and hydrogen, its metallicity [Fe/H] is −0.24+0.087−0.081 dex, significantly lower than the Sun's. Its density is roughly 5.239±0.265 g/cm3, or about 3 times denser than the Sun; while its surface gravity is stronger than the Sun, with log g of 4.722±0.008 cgs.

Astrometry and characteristics SIMBAD data indicate that its proper motion is 20.094 mas/yr for right ascension, −19.889 mas/yr for declination, its parallax is 4.859 mas.

Planetary system The star has one known planet, Kepler-737b.

Kepler-737b was confirmed on May 18, 2016 from data collected earlier by the Kepler space telescope, notable for orbiting in the habitable zone but not likely to be habitable because it is tidally locked. It may, however, have atmospheric circulation that would distribute the heat around the planet, potentially making a large portion of it habitable, although given its stellar flux the most likely scenario is that the planet's surface is too hot to be habitable. Water on its surface could also distribute heat. On the note of the Exoplanet Archive, Kepler-737b was dedicated that orbital period, transit mid-point, transit duration, Rp/Rs, and their errors are taken from DR24 KOI table.

References

Worked examples

Example 1 — a first encounter with Kepler-737

Start with the simplest possible case. Write down what Kepler-737 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 Kepler-737 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 Kepler-737 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 Kepler-737

In research: Kepler-737 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 Kepler-737 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: Kepler-737 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Cygnus (constellation), Kepler objects of interest, M-type main-sequence stars, so understanding it makes those chapters shorter.
In everyday life: Look for Kepler-737 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 Kepler-737 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what Kepler-737 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 Kepler-737 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is Kepler-737 in simple terms?

Kepler-737 is an M-type main-sequence red dwarf located 671 light-years away on the border of the constellation Cygnus. Physical properties General properties Kepler-737's spectral class is M0V, its temperature is about 3,813 Kelvin, and it has a brightness of 0.045 solar luminosity.

Why does Kepler-737 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 Kepler-737?

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 Kepler-737.