Strange three-lobed asteroid seems to have its own tiny moon

 

The asteroid 44 Nysa, centre, and its tiny moon, marked with an arrow, Image courtesy of Kate Minker.

Joel Kontinen

Space is wonderful. Ever hard of an asteroid that has its tiny moon? the asteroid is called Nysa  It is  75 kilometres across with a tiny moon just a kilometre across.

Astronomers have spotted one of the strangest-looking asteroids we have ever seen. The space rock, called 44 Nysa, was discovered in 1857, but it wasn’t until now that we had the observational capability to figure out its shape – and its shape is weird.

An E-type asteroid, which is a relatively rare type rich in a mineral called enstatite, 44 Nysa circles the sun in the main asteroid belt between the orbits of Mars and Jupiter. It is the brightest E-type asteroid we know of and one of the largest, with an average diameter of about 75 kilometres, which makes it a tempting observational target.

Source:  

 Leah Crane 2026 Strange three-lobed asteroid seems to have its own tiny moon | New Scientist 29 July