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Lambda Aquarii

Lambda Aquarii, Latinized from λ Aquarii and formally named Shatabhisha, is a variable star in the equatorial constellation of Aquarius. The apparent visual magnitude of this star ranges from 3.57 down to 3.80, which is bright enough to be visible with the naked eye. The star is eclipsed by the sun from about 1-4 March; thus the star can be viewed the whole night, crossing the sky, in early September, in the current epoch. Lambda Aquarii is located at a distance of from the Sun based on parallax, but is drifting closer with a radial velocity of −10.5 km/s. This star lies just 0.39 degrees south of the ecliptic and so is subject to lunar and planetary occultations. On 16 April 2014, it was occulted by Venus as viewed from Australia, New Zealand and the West Pacific.

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Article summary

Lambda Aquarii, Latinized from λ Aquarii and formally named Shatabhisha, is a variable star in the equatorial constellation of Aquarius. The apparent visual magnitude of this star ranges from 3.57 down to 3.80, which is bright enough to be visible with the naked eye. The star is eclipsed by the sun from about 1-4 March; thus the star can be viewed the whole night, crossing the sky, in early September, in the current epoch. Lambda Aquarii is located at a distance of from the Sun based on parallax, but is drifting closer with a radial velocity of −10.5 km/s. This star lies just 0.39 degrees south of the ecliptic and so is subject to lunar and planetary occultations. On 16 April 2014, it was occulted by Venus as viewed from Australia, New Zealand and the West Pacific.

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  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?

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