Archives
A new and improved ephemeris for the hot subdwarf eclipsing binary SDSS J082053.53+000843.4
SDSS J082053.53+000843.4, for brevity here referred to as J08205, is a 15th magnitude short period, 0.0962404(1)d (~2h 18.6m), detached eclipsing
Read moreThe brighter comets of 2007
This report describes and analyses the observations of the brighter or more interesting comets discovered or at perihelion during 2007, concentrating on those with visual observations.
Read more