Search for moons of Venus

A Survey for Satellites of Venus
http://arxiv.org/abs/0906.2781

Abstract wrote:

We present a systematic survey for satellites of Venus using the Baade-Magellan 6.5 meter telescope and IMACS wide-field CCD imager at Las Campanas observatory in Chile. In the outer portions of the Hill sphere the search was sensitive to a limiting red magnitude of about 20.4, which corresponds to satellites with radii of a few hundred meters when assuming an albedo of 0.1. In the very inner portions of the Hill sphere scattered light from Venus limited the detection to satellites of about a kilometer or larger. Although several main belt asteroids were found, no satellites (moons) of Venus were detected.

... sad!

I have a question. Mars has a launch window about every two years. When is the launch window for Venus?

Every 19 months.

When does the next widow open?

In May

http://forum.nasaspaceflight.com/index.php?topic=18950.msg555144#msg555144