Antares

Antares 

Antares, designated α Scorpii, is on average the fifteenth-brightest star in the night sky, and the brightest object in the constellation of Scorpius. Distinctly reddish when viewed with the naked eye, Antares is a slow irregular variable star that ranges in brightness from apparent magnitude +0.6 to +1.6. 

Information 

Distance to Earth :- 554.5 light years

Radius :- 473.08 million km

Constellation :- Scorpius

Coordinates :- RA 16h 29m 24s | Dec -26° 25′ 55″

Age :- 15±5 Myr

Apparent magnitude (V) :- 0.6 - 1.6 + 5.5

Proper motion (μ) :- RA: −12.11 mas/yr; Dec.: −23.30 mas/yr

Type of star

red supergiant star

Antares is a red supergiant star that is nearing the end of its life.

Colors

Antares is an eye-catching star, shining with a distinctive bright red sparkle on northern summer evenings. In the Southern Hemisphere, it's a red beacon in winter evening skies. This star, also known as Alpha Scorpii, lies about 550 light-years away.

Luminosity

2,754 L ☉

Antares

Observation data Epoch J2000 Equinox J2000
Luminosity	2,754 L ☉
Surface gravity (log g)	3.9 cgs
Temperature	18,500 K
Rotational velocity (v sin i)	250 km/s

Period

Every year around November 30, Antares comes near the Sun. The date may vary from year to year, but it generally falls between November 30 and December 2. For about two or three weeks on either side of the conjunction, Antares can't be seen in the night sky.