- Dec. 1: Close conjunction of Jupiter, Venus and the Moon, as previewed here (with this, this, this and this preview N-America- and this one Australia-oriented). For Europe there will actually be an occultation of Venus by the Moon as previewed here, here and here!
- Dec. 4/5: Comet C/2008 T2 (Cardinal) approaches the North Pole of the sky to within 7 arc minutes! The comet is at about 13th magnitude.
- Dec. 7: The Trans-Neptunian Object (20,000) Varuna occults a star - with ongoing astrometry the predictions for the ground track have it now pretty stable cutting through the deep South Atlantic.
- Dec. 31: Jupiter will be 1.2° north of Mercury which is experiencing a minor evening visibility. Also Saturn's rings are almost seen from the edge.
- Dec. 31: After a long time there will be once again a leap second, making 2008 one second longer - and thus delaying the beginning of the International Year of Astronomy 2009 ...
In other news the first meteorites that fell after the well-documented Canadian bolide of Nov. 20 have been found and celebrated widely (see here and here and here and here and here and here for coverage and pictures). • Another Canadian bolide - and a rumbling sound in Wales. • According to at least one theorist the Leonids in 2009 could reach a ZHR of 500, i.e. 5 times the typical Perseids. Others haven't confirmed that yet. • Comet Borrelly with a long tail on Nov. 30. • Sometimes here true live images of comets can be seen.
• There is a possible nova in Carina with 7th mag. • And finally the toolbag lost during the 1st EVA of STS-126 has not only been filmed near Eta Psc (which made the videographer kind of famous), it has also been sighted visually, sometimes at 6.5 mag., sometimes even naked-eye, leading the ISS by several minutes already. Predictions are easy to get, and even public events have been proposed - while parodies of the incident abound ...