Wednesday, July 9, 2008

Delta Trianguli AB

Star type
g A: G0.5 Ve
g B: K4 V

Distance from Earth
g 35.4 ly

Star Service No.
g NA

g A: NA
g B: NA

Diameter/Mass/Temp (xSol)
g A: 98%; 109%; NA
g B: NA; 75%; NA

Brightness (xSol)
g A: 110%
g B: NA

g A: 13% to 31%
g B: NA

Comparison to Sol
g A: NA
g B: NA

Picture of star
g A: NA
g B: NA

Star system features
g Tight-orbiting binary
g Member of the Zeta Herculis stellar moving group

Known planets
g NA

Habitable zone
g May be centered as close as 1.06 AU - between the orbital distances of Earth and Mars in the Solar System - with an orbital period of over 384 days (1.05 years).

Orbital map
g Stars A and B are separated on average by less than 0.11 AU (a= 0.0098" at a HIPPARCOS distance estimate of 35.4 ly). Their highly circular orbit (e= 0.020) takes only about 10.02 days (0.02743 years) to complete and is inclined around 167° from Earth's perspective
g See graphic

View from star
g A: NA
g B: NA

Nearby stars
(Star systems with 10 light years)
g LP 245-10: 1.8 ly
g L 1305-10: 6.9 ly
g HR 483 AB: 9.3 ly (A= G1.5 V)
g BD+47 612: 9.5 ly
g Theta Persei AB?: 10 ly (A= F7 V)
g Iota Persei: 11 ly (G0 V)
g Upsilon Andromedae AB : 11 ly (A=F7-8 V)
g Mu Cassiopeiae AB: 16 ly (G5 VIp)
g BD+37 783: 18 ly (G5 V)
g NA

g Kappa Ceti: 20 ly (G5 Ve)

Map locating star system
g NA

Location in Earth sky
g In the north central part of Constellation Triangulum, the Triangle, near Gamma and 7 Trianguli, slightly southeast of Beta Trianguli and northeast of Mothallah (Alpha Trianguli) and Hamal (Alpha Arietis).

Other names
g A: 8 Tri A
g A: Del Tri A
g A: HR 660*
g A: Gl 92 A
g A: Hip 10644
g A: HD 13974
g A: BD+33 395
g A: SAO 55420
g A: LHS 154
g A: LTT 10770
g A: LFT 198
g A: ADS 1739 A
g B: Del Tri B
g B: ADS 1739 B
g B: Gl 92 B

Sci-fi mentions
g NA

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