Sargas, a white giant star in Scorpius
Sargas is a white giant star in the constellation Scorpius. At 270 light years away, it is the 41st brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 1.86.
Sargas (HIP 86228)
Sargas is a white giant star in the constellation Scorpius. At 270 light years away, it is the 41st brightest star in the Earth's sky, where it shines at an apparent visual magnitude of 1.86. Sargas is a multiple-star system. It is moving through the Galaxy at a speed of 2.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,400 and 32,200 light years from the center of the Galaxy.
Sky position: RA 17h 37.3m, Dec -43° 0'
Common designations: Sargas, Theta Scorpii, HIP 86228, HD 159532, HR 6553
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Brightest stars in Scorpius:
(list all)
| Rank | Mag. | Star |
| 1 | 1.06 | Antares |
| 2 | 1.62 | Shaula |
3
| 1.86
) Sargas
| Rank | Mag. | Star |
| 4 | 2.29 | Dschubba |
| 5 | 2.29 | Epsilon Scorpii |
| 6 | 2.39 | Kappa Scorpii |
| 7 | 2.56 | Graffias |
| 8 | 2.70 | Lesath |
| 9 | 2.82 | Alniyat |
| 10 | 2.89 | Pi Scorpii |
| 11 | 2.90 | Alniyat |
| 12 | 2.99 | Iota-1 Scorpii |
| 13 | 3.00 | Mu-1 Scorpii |
| 14 | 3.19 | G Scorpii |
| 15 | 3.32 | Eta Scorpii |
| 16 | 3.56 | Mu-2 Scorpii |
| 17 | 3.62 | Grafias |
Hover over other bright stars to identify or click to jump.
Galactic Orbit of Sargas
(compared to the Sun)
E
ccentricity: 15.8% vs. 16.0%Angle φ : 30.0°vs. 26.0°
Semi-major axis : 8,536 pc vs. 8,686 pc
Semi-minor axis: 8,428 pc vs. 8,574 pc
Focus-to-center
: 1,350 pcvs. 1,388 pcSemilatus rectum : 8,322 pc vs. 8,464 pc
Perigalacticon: 7,186 pc vs. 7,297 pc
Apogalacticon
: 9,886 pcvs. 10,074 pcSome Tabulated XHIP Data for Sargas
(see also: SIMBAD)
Astrometry
2007A&A...474..653V
| Position | Proper Motion | |
| Right Ascension: | 264.32969072° ±0.78 mas | 6.06 ±1.03 mas/yr. |
| Declination: | -42.99782155° ±0.68 mas | -0.95 ±0.78 mas/yr. |
| Galactic Longitude: | 347.13891696° | 2.40 mas/yr. |
| Galactic Latitude: | -5.97571472° | -5.64 mas/yr. |
Parallax: 11.99 ± 0.84 mas
Spectrography
Spectral Type: F1III 1989ApJS...69..301G.
Radial Velocity: 1.40 ±2.50 km/s [A rating] 2006AstL...32..759G.
Iron Abundance [Fe/H]:
n/a
Photometry
band
magnitude
Abs. Mag.
U
B
2.27
-2.30
V
1.86
-2.71
R
I
1.42
-3.14
J
1.07
-3.49
H
0.87
-3.70
K
0.84
-3.73
B-V: +0.41 V-I: +0.44
Derivations
Heliocentric distance: 82.91 pc (7.0% margin of error)
Galactocentric distance: 7,320 pc
Transverse velocity: 2.4 km/s
3D heliocentric position and motion:
|
toward: |
Galactic center | Galactic rotation | North Galactic Pole |
| Position ( X, Y, Z) | 80.4 pc | -18.4 pc | -8.6 pc |
| Velocity (U, V, W) | 1.3 km/s | 0.7 km/s | -2.4 km/s |