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2006 Jan 25th: Saturn occults BY Cancri

PostPosted: Thu Jan 05, 2006 3:36 pm
by Pete Lawrence
[size=2][color=#ffffff]On January 25th 2006 the planet Saturn will appear to move in front of a faint (mag. +7.9) star - [b]BY Cancri[/b] (HIP 42705). This star is marginally brighter than Saturn's brightest moon Titan (mag. +8.1). The approximate timings for the event are shown in the graphic. If you want to watch the occultation, it's essential to allow yourself a decent amount of time before it is due to occur. There are a number of moons in the vicinity and will be quite easy to mistake one for the star. Look at how far the star moves between the times shown - this should allow you plan when to start observing. If you give yourself sufficient time, you will be able to see the star move closer to the planet prior to the occultation. [/color]
[color=#ffffff]The reapperance event is tricky to observe because you cannot see the star beforehand and therefore cannot anticipate when it's going to emerge. Look at the point where the star is going to appear 10 or 15 minutes before the predicted time and keep checking regularly. It's surprising just how quickly time can pass when waiting for events like this.[/color]
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[color=#ffffff]Good luck and clear skies...[/color][/size]