Achernar

Achernar
Cineál	déréalta, foinse neas-infridhearg, réalta athraitheach rothlach agus foinse UV
Cineál speictreach (réalta)	B6Vpe
Réad linbh	Alpha Eridani II (en)
Réaltbhuíon	an Abhainn
Aois	J2000.0
Saintréithe fisiceacha agus réaltmhéadracha
Fad ón Domhan	44.091710758377 pc
Ga	7.3 R☉
Leacú	0.75
Dearbhmhéid	−2.77
Méid dhealraitheach (V)	0.46 (banda V)
Mais	6.7 M☉
Teocht éifeachtach	15,000 K
Saobhdhiallas	23.39 mas
Dualghluaisne (diallas)	−38.24 mas/y
Dualghluaisne (dronairde)	87 mas/y
Luas rothlaithe réaltach	260 km/s
Luas gathach	18.6 km/s
Imtharraingt dromchla	3,980 cm/s²
Dronairde (α)	1h 37m 42.8455s
Diallas (δ)	-57° -14′ -12.3101″
Lonrachas	1,076 lonrachas na gréine
Aois measta	37.3 megaannum (en)
Catalóga réalteolaíochta
	2MASS J01374284-5714119 (2MASS); GSC 08478-01395 (Guide Star Catalog (en) ); HD 10144 (catalóg Henry Draper); HIP 7588 (Hipparcos Catalogue (en) ); HR 472 (Bright Star Catalogue (en) ); IRAS 01358-5729 (IRAS); SAO 232481 (Smithsonian Astrophysical Observatory Star Catalog (en) ); α Eri (Bayer designation (en) ); CPC 20 447 (Cape Photographic Catalogue (en) ); FK5 54 (FK5 (en) ); GC 1979 (Boss General Catalogue (en) ); GCRV 916 (General Catalogue of Stellar Radial Velocities (en) ); HIC 7588 (Hipparcos Input Catalogue (en) ); JP11 517 (JP11 (en) ); N30 335 (Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) ); NSV 15353 (New Catalogue of Suspected Variable Stars (en) ); PLX 344 (General Catalogue of Trigonometric Stellar Parallaxes (en) ); PLX 344.00 (General Catalogue of Trigonometric Stellar Parallaxes (en) ); PPM 331199 (PPM Star Catalogue (en) ); ROT 233 (Catalogue of rotational velocities of the stars (en) ); TD1 938 (TD1 Catalog of Stellar Ultraviolet Fluxes (en) ); UBV 1700 (UBV Photoelectric Photometry Catalogue (en) ); uvby98 100010144 (uvbyβ Photoelectric Photometric Catalogue (en) ); alf Eri (General Catalogue of Variable Stars); [JE82] 39 (A catalogue of Be stars (en) ); WEB 1623 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) ); 70 Eri (Flamsteed designation (en) ); TIC 230981971 (TESS Input Catalog (en) ); TYC 8478-1395-1 (Tycho Catalogue (en) ); UBV M 8330 (UBV Photoelectric Photometry Catalogue (en) ); ALS 16724 (Catalog of Galactic OB Stars (en) )

Is é Achernar (α Eri, Alfa Eridani) an réalta is gile ar réaltbhuíon na hAbhann, agus tá sé an deichiú (10ú) réalta is gile ar spéir na hoíche. Tá sé suite in aice leis an bpointe is faide ó dheas ar an réaltbhuíon.