Constellation Twins (Gemini)
Constellation Twins (Gemini) is one of the 88 official IAU constellations, with 4 catalogued bright stars. Sky centre at RA 105°, Dec 23°. Genitive form: Geminorum.
Bright stars in Twins
| Name | Bayer | Magnitude | Type | Distance (ly) |
|---|---|---|---|---|
| Pollux | beta Gem | 1.14 | K0III | 33.8 |
| Castor | alpha Gem | 1.58 | A1V | 51.6 |
| Mebsuta | epsilon Gem | 2.98 | G8Ib | 840.0 |
| Mebsuta-A | epsilon Gem | 3.06 | G8Ib | 840.0 |
About the constellation
Gemini is one of the 88 official constellations of the International Astronomical Union, defined by the IAU in 1922 with precise boundaries established by Eugene Delporte in 1930. The genitive form Geminorum is used to name stars via Bayer designation (e.g., alpha Geminorum = the brightest star).
Other constellations
And Ant Aps Aql Aqr Ara Ari Aur Boo Cae Cam Cnc CVn CMa CMi Cap Car Cas Cen Cep Cet Cha Cir Col Com CrA CrB Crv Crt Cru Cyg Del Dor Dra Equ Eri For Gru Her Hor Hya Hyi Ind Lac Leo LMi Lep Lib Lup Lyn Lyr Men Mic Mon Mus Nor Oct Oph Ori Pav Peg Per Phe Pic Psc PsA Pup Pyx Ret Sge Sgr Sco Scl Sct Ser Sex Tau Tel Tri TrA Tuc UMa UMi Vel Vir Vol Vul