Help make Alexa smarter on Alexa Answers. Sign in with Amazon

Science

What do you call a first magnitude star?


First-magnitude stars are the brightest, with apparent magnitudes lower than +1.5. Hipparchus, in 1st century B.C., introduced the magnitude scale. He allocated 1st magnitude to the 20 brightest stars & the sixth magnitude to the faintest stars visible to the naked eye. Sirius is 1st level

{{ relativeTimeResolver(1639174805139) }}

LIVE
Points points 5
Rating

Similar Questions
Sign in to view all similar questions

Join Alexa Answers

Help make Alexa smarter and share your knowledge with the world

LEARN MORE