Lambda Telescopii

Article summary

λ Telescopii, Latinized as Lambda Telescopii, is a solitary, bluish-white hued star located in the southern constellation of Telescopium. It has an apparent magnitude of 4.84, making it readily visible to the naked eye under ideal conditions. Gaia DR3 parallax measurements imply a distance of 490 light years, and it is currently approaching the Solar System with a somewhat constrained heliocentric radial velocity of . At its current distance, the visual magnitude of Lambda Telescopii is diminished by an extinction of 0.25 due to interstellar dust and it has an absolute magnitude of −1.51. The object has been given several stellar classifications over the years. Lambda Telescopii has been classified as B9 III (evolved giant star), A0 V (A-type main-sequence star), and B9 .5 IV/V. The accepted classification for Lambda Telescopii is B9.5 IV/V, indicating that it is a late B-type star with the blended luminosity class of a subgiant and a main sequence star. Gaia DR3 stellar evolution models place it near the end of its main sequence lifetime. The star is 268 million years old with a relatively high rate of spin, showing a projected rotational velocity of . Lambda Telescopii is metal enriched with an iron abundance 155% that of the Sun, or [Fe/H] = +0.19.…

Key claims

No claims recorded.

Discussion questions

1. Summarise the article in your own words. Which single claim would you verify first, and why?
2. Which claim in this article is most likely to be revised as the sources update? How would you check its current status?
3. If two sources disagreed about one of these facts, what would you need in order to trust one over the other?

Bibliography

No sources recorded.