The target of the NASA DIXI mission, comet 103P/Hartley 2 is in a non-principal-axis (NPA) rotational state that was observed to be varying with time. However, there is still no consensus on the specific NPA rotational state during the 103P/Hartley 2 encounter by DIXI. We analyze the continuum features observed in ground-based images bracketing the

The observations (program GO 10861) were taken between 2006 November and 2007 January with the HST/ACS camera (2x4096x2048 pixels, 0.05arcsec/pixel, 3-arcsec interchip gap). (1 data file).

The Hilda asteroid group and Jupiter Trojans (JTs) are populations of primitive minor bodies whose origins have not been conclusively determined. In the framework of the so-called Nice Model, they are icy bodies scattered from the Kuiper Belt in an early epoch of the Solar System (the Late Heavy Bombardment) and finally trapped in the stable

IAUC 7273 available at Central Bureau for Astronomical Telegrams.

Not Available

We have observed the spectral regions around the LiI resonance 670.8nm and subordinate 610.4nm lines of V471 Tau. This is an eclipsing post common-envelope (CE) binary system. A revision of several independent measurements of the parallax and proper motion of V471 Tau allow us to argue that this system is indeed a Hyades cluster member by examining