Saturday, September 8, 2007

GJ 752 AB

Star type
g A: M3.5
g B: M8 (borderline brown dwarf)

Distance from Earth
g 19.16 ly

Star Service No.
g NA

g A: NA
g B: NA

Diameter/Mass/Temp (xSol)
g A: 54.2%; 49%; NA
g B: 10.2%; 9%; 4,400° F

Brightness (xSol)
g A: 3.82%
g B: 0.0140%

g A: NA
g B: NA

Comparison to Sol
g See chart (similar to Proxima)

Picture of star
g A: See picture

Star system features
g Two stars were separated by about 434 AUs in 1942
g Illustration of stars’ thermal structures
g Sudden flare burst can heat Star B’s outer atmosphere to around 270,000° F; this rapid heating to the presence of an intense, but unstable, magnetic field; subsequently, an x-ray flare emanates from the star

Known planets
g A: NA
g B: NA

Habitable zone
g A: An Earth-type planet would be comfortable with liquid water at an orbital distance of less than 0.084 AU (without accounting for infrared heating), with a "year" of less than 14 days.
g B: An Earth-type planet would be comfortable with liquid water at an orbital distance of 0.0017 AUs (without accounting for infrared heating), and a planetary orbit around the star would be completed in a matter of hours.

Orbital map
g NA

View from star
g See sky map

Nearby stars
(Star systems with 10 light years)
g Altair: 3.7 ly
g 70 Ophiuchi 2?: 6.1 ly
g G 184-19 AB: 9.3 ly
g ISO 417: 9.7 ly
g BD-03 4233: 9.9 ly

Map locating star system
g See stellar map (listed as “Wolf 1055”)

Location in Earth sky
g In the north central part of Constellation Aquila, the Eagle, north of Delta Aquilae, west of Altair (Alpha Aquilae) and Alshain (Beta Aquilae), and southeast of Zeta Aquilae

Other names
g A: Wolf 1055 A
g A: LHS 473
g A: Ross 652
g A: V1428 Aquilae A
g A: Gl 752
g A: HD 180617
g A: BD +4°4048
g A: G 22-22
g A: HIC 94761
g A: McC 65
g B: LHS 474
g B: van Biesbroeck’s Star
g B: van Biesbroeck 10 (VB10)
g B: V1428 Aquilae B
g B: Wolf 1055 B
g A-B: Hip 94761

Sci-fi mentions
g NA

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