Altair (star)

Altair A
Spectral	A7 IV-Vn
Type	Main Sequence
Multiple	Triple
Luminosity	10.6 LSol
Absolute magnitude	2.22
Mag Terra	0.76
Temperature	7500° K
Mass	1.8 MSol
Radius	1.75 RSol
Companion	Altair C & Altair D

Altair C
Spectral	??
Type	Main Sequence
Multiple	Companion
Luminosity	LSol
Absolute magnitude
Mag Terra	10.3
Temperature	° K

Altair D
Spectral	??
Type	Main Sequence
Multiple	Companion
Luminosity	LSol
Absolute magnitude
Mag Terra	11.9
Temperature	° K

The star Altair (otherwise known as Alpha Aquilae) is a bluish-white spectral classification A7 Delta Scuti type variable main sequence star.

Description (Specifications)

Altair has a rapid rotation rate, causing its spherical shape to be distorted into an oblate spheroid with an equatorial diameter 25% greater than its polar diameter, and a dimmer luminosity at the equator as compared to the poles due to the difference in gravity and temperature.

• The primary star Altair A has two faint companion stars, Altair C, and Altair D. A visual "B-companion" from the perspective of the Terran night sky, catalogued as BD+08 4232 is not physically close to Altair A but merely appears close to it in Terra's night sky.
• The inner edge of Altair's habitable zone is located at ~2.177AU, while the outer edge lies at ~4.475AU. The orbit of a Terra-norm world within the system would be centered at ~3.3AU with an orbital period of about 4.7 years.

• The Altair star system lies approximately 5.1pc from Terra, and is located in a Coreward/Corespinward direction from Terra at bearing 047.7^o Galactic Longitude and -08.91^o South Galactic Latitude.

History & Background (Dossier)

Altair is the primary star of the beltworld Altair/Dingir (Solomani Rim 1522).

Image Repository

TravellerMap (T5SS):
[1]

References & Contributors (Sources)

This article has metadata.

This page uses content from Wikipedia. The original article was at Altair. 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.

• Classic Traveller: Solomani (Alien Module)
• GURPS Traveller: Interstellar Wars
• GURPS Traveller: Rim of Fire
• Mongoose Traveller: Solomani Rim
• Mongoose Traveller Alien Module 5: Solomani
• MegaTraveller CD-ROM: Preliminary Traveller Map (Hand-drawn)
• EXTERNAL LINK: SIMBAD @ University of Strasbourg: [2]
• EXTERNAL LINK: Sol Station: [3]
• Traveller Wiki Editorial Team
• Author & Contributor: WHULorigan
• Author & Contributor: Lord (Marquis) and Master of Sophontology Maksim-Smelchak of the Ministry of Science