The phrase "asteroid completes" is grammatically correct and can be used in written English.
It can be used in contexts discussing the completion of an orbit or a specific event related to an asteroid.
Example: "The asteroid completes its orbit around the sun every 3.5 years."
Alternatives: "asteroid finishes" or "asteroid concludes".
One of the accompanying illustrations, by artist Roy Scarfo, shows a hollow asteroid complete with rivers, trees and farming equipment.
After a year orbiting the asteroid Eros and completing all its scientific objectives, the NEAR Shoemaker spacecraft will end its mission next week, scientists say.
However, 2001 OE84, an asteroid of (D sim 0.65) km that completes 1 rotation in 29.19 min, demonstrates the first exception among the rubble-pile asteroids (Pravec et al. 2002), and it is, therefore, called a "super-fast rotator" (SFR).
Here are just a few of the things that NASA's asteroid sample return mission must get right to complete a successful mission.
And no 21st Century space conference would be complete without a representative from an asteroid mining company, in this case Rick Tumlinson, a founder of the newly-christened Deep Space Industries.
Early radar views of asteroid 1998 QE2 also indicate it is spinning -- completing a full rotation in less than 4 hours, and that it has several large divots on its surface. .
Our second SFR is (40511) 1999 RE88, which is a S-type asteroid with a diameter of ({sim} 2) km that completes one rotation period in 1.96 h (Chang et al. 2016).
Our first SFR is (335433) 2005 Uwhich whish is a V-type asteroid with a diameter of ({sim} 0.6) km that completes one rotation in 1.29 h (Chang et al. 2014, 2015).
We assess a recently completed experiment in pTA, the "Informing NASA's Asteroid Initiative" project.
The spacecraft, which is orbiting Eros at 50 kilometers, recently completed the first ever elemental composition of an asteroid.
