View Full Version : Akatsuki return to Venus

Cheap Astronomy
2015-Dec-19, 06:58 AM

I understand Akatsuki (Japanese space probe) missed Venus first time in 2010 and had to continue in solar orbit for another attempt 5 years later in 2015. I'm curious to know how many times it orbited the Sun over that five years. I am presuming it would have been moving a bit faster than Venus itself to be able to catch it up again - so maybe it did 8 or 9 solar orbits in the 5 years?



2015-Dec-19, 11:19 AM
JAXA Messages (http://global.jaxa.jp/messages/akatsuki.html)

The Venus Climate Orbiter “AKATSUKI” will be maneuvered again for the second time to try to be injected into the Venus orbit on December 7, 2015. The orbit of the AKATSUKI has been controlled in preparation for meeting Venus this winter. Since December 2010, the orbiter has passed the perihelion nine times. The chance this time will be the last opportunity.

Nine. Meanwhile, 8 for Venus.