Milieu 1248:Antares (star)

Milieu 1116 Milieu 1248 Milieu 1900

Antares
Spectral	ns
Type	neutron star
Multiple	binary
Luminosity	LSol
Absolute magnitude
Temperature	50,000° K
Mass	~ 2.0 MSol
Radius	0 RSol
Companion	Antares B

Antares B
Spectral	B2.5V
Type	Main sequence
Luminosity	170 LSol
Absolute magnitude	5.5
Temperature	18,500° K
Mass	7.2 MSol
Radius	5.2 RSol

Antares is a binary star system composed of a tiny bright blue-white neutron star with a diameter of no more than about 10 kilometers orbited by a blue-white main sequence star of spectral type B2.5. The A-component supergiant went supernova in Imperial year 1270. It is part of the star forming region known as the Scorpius OB2 Association, a.k.a. the Scorpius-Centaurus Association.

• It is also known as Alpha Scorpii and Cor Scorpii.

Description (Specifications)

The Antares star system is approximately 600 light years from Terra. Its primary component, Antares B, is a hot blue star at a distance of about 550 AUs from its neutron star companion (Antares A), and is 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 Sol. The orbit has an estimated period of 850 years.

• The Antares star system also has a companion star (Antares A) that went supernova in Imperial year 1270, sequentially sterilizing all worlds in a 30pc region centered on the system at an expanding rate of about 1 pc every 3¼ years. All worlds within the Antares system itself were incinerated in the blast.

The Antares 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).

Image Repository

TravellerMap (T5SS):
[1]

References & Contributors (Sources)

This article has metadata.

This page uses content from Wikipedia. The original article was at Antares. The list of authors can be seen in the page history. The text of Wikipedia is available under the Commons Attribution-ShareAlike 3.0 Unported License.

This list of sources was used by the Traveller Wiki Editorial Team and individual contributors to compose this article. Copyrighted material is used under license from Mongoose Publishing or by permission of the author. The page history lists all of the contributions.

• MegaTraveller CD-ROM: Preliminary Traveller Map (Hand-drawn)
• EXTERNAL LINK: SIMBAD @ University of Strasbourg: [2]
• Robert Eaglestone. Xboat Special Supplement 2: The Far Far Future (Robert Eaglestone, 2024), .
• Author & Contributor: Rimguy
• Author & Contributor: Lord & Chief Marshall (Count) Dan Corrin of the Office of the Emperor
• Author & Contributor: WHULorigan