Ross 248

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Ross 248 ( variable star designation HH Andromedae ) is a red, cool dwarf star in the constellation Andromeda. He belongs to the group of UV Ceti stars and is very energetic. With approximately 10.3 light years from the Sun is Ross 248 Rank 9 the nearest known stars and the sun next star in the constellation Andromeda. Since the Voyager 2 spacecraft about flying in the direction of Ross 248, they will reach their next at 1.7 light years path point to this red dwarf in about 40,000 years.

According to a calculation by Robert AJ Matthews from the 1993 Ross 248 is replace by its trajectory and speed Proxima Centauri in 33,000 years as closest to the Sun Star. Due to its high speed, it is only about 9000 years wearing this item.

Discovery

Ross 248 was discovered in 1925 by Frank Elmore Ross ( 1874-1960 ), who also made the first good infrared and ultraviolet photographs of Venus in 1923. Ross first reported in his "Second list of New Proper Motion Stars ," Astronomical Journal ( 36:856 ).

Habitable Zone

The Habitable Zone of Ross 248 is between about 0.022 to 0.054 astronomical units and thus is closer than the orbit of Mercury with a distance from the Sun of about 0.4 AU.

It was thought for a long time that Ross 248 has one or more companions, but they were several precision measurements of the Doppler shift in the late 1980s negatively. Even the Hubble Space Telescope found no evidence for this assumption.