Antares (star)

Antares
Spectral	M1.5 Iab-b
Type	supergiant
Multiple	binary
Luminosity	10,000 LSol LSol
Lum Rank	38th
Absolute magnitude	-5.28
Mag Terra	1.09 (16th)
Temperature	3,500 K° K
Mass	12.4 MSol MSol
Companion	Antares B

Antares B
Spectral	B2.5V
Type	Main sequence
Luminosity	170 LSol LSol
Absolute magnitude	5.5
Temperature	18,500 K° K
Mass	7.2 MSol MSol

Antares (also known as Alpha Scorpii and Cor Scorpii) is a class M supergiant star, with a diameter of more than 700 times that of Sol.

Description (Specifications)

Antares is approximately 600 light years from Terra. Visually, its luminosity is about 10,000 times that of Sol but overall, taking into account that the star radiates a considerable part of its energy in the infrared part of the spectrum the luminosity equals roughly 65,000 times (an absolute magnitude of -5.28). The mass of the star is approximately 12.5 sol masses. Its large size and relatively small mass give Antares a very low density.

• The Antares system also has a hot blue companion star (Antares B) at a distance of about 550 AUs of spectral type B2.5V. At magnitude 5.5, it is 1/370th as bright visually as Antares itself, yet still 170 times brighter than the Sun. The orbit has an estimated period of 850 years.
• Antares is the 16th brightest star as seen from Terra, it is the 38th brightest star in the galaxy, and one of the brightest in Charted Space. Antares is also the 10th largest star in the galaxy, and the largest in Charted Space.
• As seen from Vland or Capital/Sylea, Antares would be very bright at -1.58 Magnitude (brighter than Sirius from Earth).

The Antares system star system is approximately 170pc from Terra, and is located in a Coreward/Corespinward direction from Terra at bearing 351.9^o Galactic Longitude and +15.1^o North] Galactic Latitude.

History & Background (Dossier)

Antares is the primary star of the world Antares/Antares (Antares 2421).

References & Contributors (Sources)

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• Travellermap (T5SS): [1]

• External Link: SIMBAD @ University of Strasbourg: [2]