Saturday, July 7, 2007

Ross 248

Star type
g M4.9-5.5 Ve

Distance from Earth
g 10.33 ly

Star Service No.
g NA

g NA

Diameter/Mass/Temp (xSol)
g 7%; 25%; NA

Brightness (xSol)
g 0.00111%

g NA

Comparison to Sol
g NA

Picture of star
g See picture at upper right (star identified as "HH And")

Star system features
g Possible periods of variability at 4.2 years, 120 or 121 days, and five other periods between 60 and 291 days, which may be caused by an unresolved companion

Known planets
g A recent search for faint companions using the Hubble Space Telescope found no supporting evidence for a large Jupiter or brown dwarf sized object

Habitable zone
g To be warmed sufficiently by star light to have liquid water, about 0.01 AU with an orbital period of 1.4 days

Orbital map
g NA

View from star
g See sky map (Actually for Groombridge 34, but at only 1.8 ly apart, the sky is virtually identical)

Nearby stars
(Star systems with 10 light years)
g Groombridge 34 Aab,B: 1.8 ly
g Kruger 60 AB, 4.5 ly
g 61 Cygni 2, 5.6 ly
g EV Lacertae 2, 6.6 ly
g Struve 2398 AB, 8.5 ly
g Van Maanen's Star, 9.5 ly
g Teegarden's Star, ~9.7 ly
g L 1159-16, 9.9 ly

Map locating star system
g See stellar map

Location in Earth sky
g Northwestern part of Constellation Andromeda, south of Lambda Andromedae and near Kappa and Iota Andromedae; not visible to the naked eye

Other names
g HH Andromeda
g Gl 905
g G 171-10
g G 190-42
g LHS 549
g LTT 16985
g LFT 1816

Sci-fi mentions
g NA

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