Astronomers have found a large object in the Solar System's outer reaches. It is being hailed as "a great discovery".
Details of the object are still sketchy. It never comes closer to the Sun than Neptune and spends most of its time much further out than Pluto.
(http://newsimg.bbc.co.uk/media/images/41354000/jpg/_41354795_object_203.jpg)
http://news.bbc.co.uk/2/hi/science/nature/4726733.stm
This has now been confirmed. It is larger than Pluto !!
http://news.bbc.co.uk/2/hi/science/nature/4730061.stm
What happened to Sedna? :-?
As for Sedna, or even Pluto for that it would appear that they would be better described as Kuiper belt objects.
Empherisis for planet X, CCD folks should pick it up.
Ephemeris:
Date TT R. A. (2000) Decl. Delta r Elong. Phase V
2005 07 29 01 39.38 -05 19.3 96.681 96.939 104.4 0.6 18.9
2005 08 08 01 39.30 -05 21.0 96.526 96.937 113.7 0.5 18.9
2005 08 18 01 39.16 -05 22.9 96.382 96.936 122.9 0.5 18.9
2005 08 28 01 38.97 -05 25.0 96.254 96.934 132.1 0.4 18.8
2005 09 07 01 38.72 -05 27.3 96.146 96.933 141.2 0.4 18.8
The gauntlet is thrown down for DSC !!