Theta Scorpii
Sign in to saveAlso known as Sargas
star in the southern zodiac constellation of Scorpius
Astronomical data · SIMBAD
- Object type
- *
- Spectral type
- F1III
- Distance
- 300 light-years
- Redshift
- z = 0.00001727876940926798
- Coordinates
- RA 264.3297° · Dec -42.9978°
via SIMBAD · CDS Strasbourg
Key facts
- Constellation
- Scorpius
- Right ascension
- 17 37 19.12985
- Declination
- −42 ° 59 ′ 52.1808 ″
- Apparent magnitude v
- 1.84 (1.862 + 6.22)
- Evolutionary stage
- Post- stellar merger
- Spectral type
- F1III
- U b color index
- +0.21
- B v color index
- +0.40
via Wikipedia infobox
Wikidata facts
- Instance of
- binary star
- Constellation
- Scorpius
- Distance from Earth
- 270
- Radius
- 20
- Mass
- 3.7
- Image
- Scorpius constellation map.png
Show 12 more facts
- stellar rotational velocity
- 125
- catalog code
- TD1 20659
- spectral class
- F0
- luminosity
- 960
- parallax
- 10.86
- apparent magnitude
- 0.841
- right ascension
- 264.329707721
- declination
- -42.997827993
- radial velocity
- 5.0
- epoch
- J2000.0
- right ascension component of proper motion
- 19
- declination component of proper motion
- 6
Sources (1)
via Wikidata · CC0
~3 min read
Encyclopedic overview
Theta Scorpii (θ Scorpii, abbreviated Theta Sco, θ Sco) is a binary star in the southern zodiac constellation of Scorpius. The apparent visual magnitude of this star is +1.87, making it readily visible to the naked eye and one of the brightest stars in the night sky. It is sufficiently near that the distance can be measured directly using the parallax technique and such measurements obtained during the Hipparcos mission yield an estimate of approximately 329 light-years (101 parsecs) from the Sun.
The two components are designated θ Scorpii A (officially named Sargas /ˈsɑːrɡæs/, the traditional name for the system) and B.
Excerpted from Wikipedia’s “Theta Scorpii” article, available under the CC BY-SA 4.0 licence.