This is the
sky as seen from Madrid (latitude 40N) at 18:45 local time on December 24th
2013.
Venus
remains in Capricornus, as at Christmas 2008 and 2011, but now lower still in
the twilight than in either of those years, just 10 degrees high. This means
that city dwellers are unlikely to see it unless there is a convenient gap
between buildings with a clear horizon behind.
This year
though it will be extremely bright as it is nearly between the Earth and the
Sun and thus much closer to us. This year Venus is just 45 million kilometers
away, far closer than the planet Mars can ever get.
Despite the
fact that its disk will show as a thin crescent, just 10% illuminated, it is as
bright as magnitude –4.5. Being close to us the disk is also much larger and
even a small telescope will show the beautiful sliver of crescent very clearly
like a tiny Moon.