How big is Haumea the dwarf planet?

Answer 1

Haumea, the dwarf planet, unlike the other 8 planets that we're used to, is

nowhere near spherical. So it has many different circumferences, depending on

where and how you take the 'cross-section'.

The on-line reference that I found describes Haumea's shape as something like

a large potato, and lists its dimensions as

1,960 × 1,520 × 1,000 km (1,220 × 940 × 620 miles).

If we were to assume that the cross-section along the largest dimension is circular,

then the circumference of that section would be 1,220 x pi = 3,833 miles.

Comment: There's something strange about that answer. A dwarf planet by definition has to be roughly spherical. I think Haumea is a "prolate spheroid". That's a shape like an American football, or a Rugby ball. Its average radius is very roughly 600 km. (I must say the drawings of Haumea don't look very spherical to me.)

So, its circumference must be very roughly 3800 km. That's a coincidence. I get almost the same answer, but in kilometers not miles!

Answer 2

the diameter of Haumea no one really knows put they estimated it would be 350 km or 217.48 miles.

Bold= done by user 2

Answer 3

Haumea has a mass of approximately 4.006 x 1021Kg

Answer 4

It is a little smaller than Pluto, with an estimated radius of about 718 km. About 722 Haumeas could fit inside Earth.

Answer 5

It's orbit ranges between 34.7 and 51.5 Astronomical Units from the sun, with an average distance of 43.1 AUs.

Answer 6

medium size not so big but not so small

Answer 7

2423523.4

Answer 8

12346.567