|
| |
J20000
|
| |
Sagittarius
|
| |
18<sup>h</sup> 17<sup>m</sup> 376<sup>s</sup>
|
| |
-36° 45' 42"
|
| |
M2III
|
| |
+310
|
| |
149 ± 6
|
| |
46 ± 2
|
(η Sgr / η Sagitarii) is a
Star System in the
Constellation Sagittarius . The
Star System is 149
Light Years from
Earth .
The primary star, is a
Spectral Type M3.5
Red Giant . It is a
Variable Star with small
Magnitude fluctuations between +3.08 and 3.12, and is classified as an
Irregular Variable .
The brightest companion, is spectral class F dwarf star, with an
Apparent Magnitude of +7.77. It is at a distance of 165
Astronomical Units from the primary and takes approximately 1 300 years to make one
Orbit . The two stars are separated by 3.6
Arcseconds on the sky.
Farther out are two dimmer members of the system, the 13th magnitude , separated from A by 33
Arcsecond s, and the 10th magnitude '''Eta Sagittarii D''', 93 arcseconds from A.
