Family name Astero (Astero 
, Hastarius 
) , all around the world, is a rare cognomen. The family name Astero is characteristic of Greece, where it is quite a rare surname, Italy, where it is a rare surname, and Philippines, where it is a very rare surname. Likewise, Astero is the forename as well as the last name.
| VARIANT | COUNTRY |
|---|---|
| Astero | Italy, Philippines, Cyprus, Tanzania, Greece |
| Hastarius | India |