astronomy

NGTS-6

NGTS-6 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 NGTS-6 rather than just read about it. In short: NGTS-6 is a star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 14.12, making it readily visible in telescopes with an aperture of at least 203 millimeters; it can also be viewed in telescopes with an aperture between 152 and 203 mm, albeit faintly.

Key takeaways

NGTS-6 belongs to astronomy; place it in that map before memorising details.
Learn the definition first, then one example that makes the definition concrete.
Connect NGTS-6 to a quantity you can measure, compute or draw — that is where exam questions come from.
Reproduce the core statement of NGTS-6 from memory before moving on to harder problems.

Reference excerpt

NGTS-6 is a star located in the southern constellation Caelum, the chisel. It has an apparent magnitude of 14.12, making it readily visible in telescopes with an aperture of at least 203 millimeters; it can also be viewed in telescopes with an aperture between 152 and 203 mm, albeit faintly. The star is located relatively far at a distance of 1,002 light years based on parallax measurements from the Gaia spacecraft, but it is drifting closer with a heliocentric radial velocity of −19.14 km/s. NGTS-6 is a K-type main sequence star that has 76.7% the mass of the Sun and 75.4% of the Sun's radius. However, it only radiates 25.6% of the Sun's luminosity from its photosphere at an effective temperature of 4,730 K, giving it an orange hue when viewed in a telescope. It is metal enriched with of the Sun's abundance of iron. Such stars are more likely to form giant planets. NGTS-6 is estimated to be 9.77 billion years old and it spins modestly with a projected rotational velocity of 2.85 km/s.

Planetary system

In 2018, a ultra-hot Jupiter was discovered orbiting the star based on transit data from the Next Generation Transit Survey. It was confirmed a year later based on doppler spectroscopy data from CORALIE and FEROS. NGTS-6b orbits extremely closely to its host star within a 21.17 hour period, making it an ultra-short period planet. The planet is 33.9% more massive than Jupiter, but it is 32.6% larger as a result of tidal heating from its close proximity. The system was included in a 2024 survey as a potential target for studying the orbital decay of exoplanets.

References

Worked examples

Example 1 — a first encounter with NGTS-6

Start with the simplest possible case. Write down what NGTS-6 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 NGTS-6 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 NGTS-6 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 NGTS-6

In research: NGTS-6 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 NGTS-6 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: NGTS-6 is common in secondary-school and first-year university syllabi. It links to neighbouring topics Caelum, Hot Jupiters, K-type main-sequence stars, so understanding it makes those chapters shorter.
In everyday life: Look for NGTS-6 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 NGTS-6 in 20 minutes

Read the reference excerpt below once, without taking notes.
Close the page and write down what NGTS-6 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 NGTS-6 out loud to somebody else — or to Teacher Smith in the lgStudy chat.

Frequently asked questions

What is NGTS-6 in simple terms?

Why does NGTS-6 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 NGTS-6?

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 NGTS-6.