How do you type a star?

How many or what size-type Planets would form and orbit a Star like VY Canis Majoris?

• VY Canis Majoris (VY CMa) is the largest known star and also one of the most luminous. It is a red hypergiant in the constellation Canis Major. It is 1800–2100 solar radii (8.4–9.8 astronomical units) in radius, about 3.0 billion km (1.9 billion mi) in diameter, and about 1.5 kiloparsecs (4,900 light-years) distant from Earth. It's about a Billion times bigger than our own sun. Unlike most hypergiant stars, which occur in either binary or multiple star systems, VY CMa is a single star. It is categorized as a semiregular variable and has an estimated period of 2,000 days. It has an average density of 5 to 10 mg/m3. Placed at the center of the Solar System, VY Canis Majoris's surface would extend beyond the orbit of Saturn, although some astrophysicists disagree about the star's stated radius, suggesting it is smaller: merely 600 times the radius of the Sun, which would extend past the orbit of Mars. If it were 1800–2100 solar radius or 600 solar radius, how many or what size-type Planets would we find there? ~Is it possible that maybe hundreds of planets could orbit VY Canis Majoris or just huge gas giants? ~The star surface probably has a temperature around 3650 K? ~How far away would the Goldilocks zone be, closer than ours compared to the sun? The Sun vs VY Canis Majoris: http://www.youtube.com/watch?v=mIdA83AKRX8

• Answer:

  We can speculate or do calculations based on a long list of assumptions. The planets we have found so far are orbiting small dim stars compared to VY Canis Majoris. Hundreds of planets, of many types are more likely than just huge gas giants. Possibly some brown dwarf stars, and bigger than Jupiter planets. In the goldilocks zone the star would appear somewhat larger than our sun assuming the photosphere temperature 3650K = somewhat less than our Sun = 600 AU = 552,200,000,000 miles = 600 times the distance Earth is from the Sun or somewhat less. That is assuming 600 solar radius. Neil