[John Hothersall]

SPX350 F9, ASI290, Baader L filter. 2nd + 3rd October 2330 local time.

Eris is in Cetus near alpha Piscium in a fairly starless area discovered formally in 2005. Wanted to see if my uncooled ASI290 could get this with 5sec exposures at mag 18.76, seeing was avg to fair as usual.

Eris is the Goddess of strife and discord. Diam 2326km, Incl 44°, greater mass than Pluto despite similar size because there is a bigger metal core (Moon is 4.6 times the mass of Eris). Its distance is 95AU from Sun with an orbit of 557 years, rotation of 26hrs.

This Dwarf Planet really needs a cooled 16bit camera with longer exposure, it can be imaged in an 80mm scope fairly well this way.

Regards, John.