Sunday, August 5, 2007

Gliese 674

Star type
g M2.5 - M3 V

Distance from Earth
g 14.81 ly

Star Service No.
g NA

g 550 (+/-450) million years old

Diameter/Mass/Temp (xSol)
g 41%-43%; 36.1%; NA

Brightness (xSol)
g 0.317%

g 52%

Comparison to Sol
g NA

Picture of star
g NA

Star system features
g NA

Known planets
g Gl 674 b is a planet that orbits tightly around Gl 674. It is a sub-Neptune-or-Uranus-mass planet either gaseous or rocky. It orbits as close as 0.039 AU from the star and takes only 4.6938 days to orbit. This planet has a similar eccentricity to Mercury (e=0.2).
g For comparison of planet to Earth, see illustration

Habitable zone
g To be warmed sufficiently to have liquid water at the surface, an Earth-type rocky planet would have to be located at around 0.13 AU; such an orbit is likely to be disrupted by the presence of the recently discovered Neptune-class planet b at an inner even closer orbital distance of only 0.039 AUs.

Orbital map
g See map

View from star
g See sky map

Nearby stars
(Star systems with 10 light years)
g CD-44 11909: 1.8 ly
g Hip 82725: 4.5 ly
g L 205-128: 5.2 ly
g L 347-14: 6.7 ly
g CD-32 13297: 7 ly
g 36 Ophiuchi 3? : 7.6 ly
g Ross 154: 7.7 ly
g CD-40 9712: 7.8 ly
g MLO 4 ABC: 8.8 ly
g BD-12 4523 AB: 9 ly
g CD-25 10553 AB: 9.3 ly
g Hip 72509: 9.5 ly
g Delta Pavonis: 9.9 ly
g Epsilon Indi: 9.9 ly

Map locating star system
g See stellar map (listed as CD-46 11540)

Location in Earth sky
g In the constellation Ara

Other names
g GJ 674, CD -46°11540, CP(D) −46°8664, GCTP 3958.00, LHS 449, LFT 1351, LTT 6942, LPM 645, HIP 85523

Sci-fi mentions
g NA

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