Altair (star)

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Altair A
Imperiumgrey-2.jpg
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
Imperiumgrey-2.jpg
Spectral  ??
Type Main Sequence
Multiple Companion
Luminosity LSol
Absolute magnitude
Mag Terra 10.3
Temperature ° K
Altair D
Imperiumgrey-2.jpg
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)[edit]

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 047.7o Galactic Longitude and -08.91o South Galactic Latitude.

History & Background (Dossier)[edit]

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

Image Repository[edit]

TravellerMap (T5SS):
[1]

References & Contributors (Sources)[edit]

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