Tuesday, August 7, 2007

GJ 440

Star type
g DQ6 VIII (white dwarf)

Distance from Earth
g 15.05 ly

Star Service No.
g NA

g NA

Diameter/Mass/Temp (xSol)
g NA; 50%; 4,500 K

Brightness (xSol)
g 0.0476%

g NA

Comparison to Sol
g NA

Picture of star
g NA

Star system features
g A rare type of white dwarf that displays evidence of atomic or molecular carbon in its spectrum
g Past: remnant of a massive main sequence star that had an estimated 4.4 solar masses; while it was on the main sequence, it probably was a spectral class B star (in the range B6-B9).
g May be a member of the Wolf 219 moving group that has seven possible members. These stars share a similar motion through space, which may indicate a common origin. The groups has an estimated space velocity of 160 km/s and are following highly eccentric orbits around the Milky Way galaxy.

Known planets
g None

Habitable zone
g NA

Orbital map
g NA

View from star
g See sky map

Nearby stars
(Star systems with 10 light years)
g NA

Map locating star system
g See stellar map (listed as “L 145-141”)

Location in Earth sky
g In constellation Centaurus

Other names
g WD 1142-645
g LTT 4364
g L 145-141
g HIP 57367
g LHS 43

Sci-fi mentions
g NA

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