Scorpius

One of the few constellations that really does look like the object it is named after; often wrongly called Scorpio. It is in the S sky, in a very rich part of the Milky Way, with many good clusters as well as Scorpius X-1, the first X-ray source discovered outside our Solar System. It is a constellation of the zodiac, lying between Libra and Sagittarius. The brightest star is Antares, a huge supergiant some 500 times the Sun's diameter, near the end of its evolution; distance: 185 parsec.

For other uses, see Scorpius (disambiguation).

Scorpius
click for larger image
Abbreviation	Sco
Genitive	Scorpii
Symbology	the Scorpion
Right ascension	17 h
Declination	−40°
Area	497 sq. 尾 wei the Tail (of Scorpius)
κ		Kappa Scorpii, Girtab	2.39	464
β1,2	8	Beta Scorpii, Acrab, Elacrab, Graffias, Grafias, Grassias	2.56	530	name Graffias/Grafias/Grassias was formerly applied to ξ Scorpii < العقرب al-caqrab The scorpion
υ	34	Upsilon Scorpii, Lesath, Lesuth	2.70	519	< Sanskrit vrischika scorpion
σ	20	Sigma Scorpii, Alniyat, Al Niyat	2.90	735	< βασανισμος basanismos "painful torment" from a scorpion's sting
η		Eta Scorpii	3.32	71.6
μ²		Mu2 Scorpii	3.56	517
ζ²		Zeta2 Scorpii	3.62	148
ρ	5	Rho Scorpii	3.87	409
ω¹	9	Omega-1 Scorpii, Jabhat al Akrab	3.93	424	< جبهة العقرب jabhat[u] al-caqrab [The] forehead of the scorpion
ν	14	Nu Scorpii, Jabbah, Jabah, Lesath	4.00	437	< This is now applied to β Scorpii six star system
H		H Scorpii	4.18
N		N Scorpii	4.24
Q		Q Scorpii	4.26
ω²	10	Omega-2 Scorpii, Jabhat al Akrab	4.31	265	< جبهة العقرب jabhat[u] al-caqrab [The] forehead of the scorpion
ο	19	Omicron Scorpii	4.55	1200
c²	13	13 Scorpii	4.58
A	2	2 Scorpii	4.59	433
b	1	1 Scorpii	4.63	521
i	22	22 Scorpii	4.70
ζ¹		Zeta1 Scorpii	4.73
ι²		Iota-2 Scorpii	4.78	3700
d		d Scorpii	4.80
k		k Scorpii	4.83
	24	24 Scorpii	4.91
ψ	15	Psi Scorpii	4.93	165
χ	17	Chi Scorpii	5.24	439
		HD 147513	5.38	41.96	has a planet
	16	16 Scorpii	5.43
	27	27 Scorpii	5.48
	18	18 Scorpii	5.49	45.7	solar twin
	4	4 Scorpii	5.63
c¹	12	12 Scorpii	5.67
	11	11 Scorpii	5.75
	3	3 Scorpii	5.87	455
	25	25 Scorpii	6.72
		Scorpius X-1	12.2	9000	X-ray binary
		PSR B1620-26		5600	pulsar/white dwarf binary in M4 has a planet
γ		Gamma Scorpii			now designated σ Librae

Source: The Bright Star Catalogue, 5th Revised Ed., The Hipparcos Catalogue, ESA SP-1200