An Réalta Thuaidh

An réalta is gile i réaltbhuíon an Bhéir Bhig, a luíonn taobh istigh de 1° ón mol neamhaí thuaidh anois. Tugtar Polaris uirthi freisin. Is ionann a airde le domhanleithead an fhéachadóra, a bheag nó a mhór. D'úsáidtí le fada í i gcomhair loingseoireachta simplí.

WD Bosca Sonraí Réad RéalteolaíochAn Réalta Thuaidh
Polaris alpha ursae minoris.jpg
Cineál F-chineál, réalta eolais, triple star system (en) Aistrigh, spectroscopic binary star (en) Aistrigh, réalta athraitheach, classical Cepheid variable (en) Aistrigh agus réalta threorach
Cineál speictreach (réalta) F7 :IB-II SB,V[1] Cuir in eagar ar Wikidata
Réaltbhuíon An Béar Beag Cuir in eagar ar Wikidata
Aois J2000.0 Cuir in eagar ar Wikidata
Saintréithe fisiceacha agus réaltmhéadracha
Fad ón Domhan 432 ly Cuir in eagar ar Wikidata
Ga 30 ga gréine Cuir in eagar ar Wikidata
Dearbhmhéid −3.64 Cuir in eagar ar Wikidata
Méid dhealraitheach (V) 2.02[2] Cuir in eagar ar Wikidata
Mais 6 M☉ Cuir in eagar ar Wikidata
Saobhdhiallas 7.54 mas[3] Cuir in eagar ar Wikidata
Dualghluaisne (diallas) −11.85 mas/y [3] Cuir in eagar ar Wikidata
Dualghluaisne (dronairde) 44.48 mas/y [3] Cuir in eagar ar Wikidata
Luas rothlaithe réaltach 14 km/s
17 km/s[4]
13 km/s[5] Cuir in eagar ar Wikidata
Luas gathach −20.81 km/s[6] Cuir in eagar ar Wikidata
Imtharraingt dromchla 44 cm/s²[7] Cuir in eagar ar Wikidata
Dronairde (α) 2h 31m 49.0946s[3] Cuir in eagar ar Wikidata
Diallas (δ) 89° 15′ 50.7923″[3] Cuir in eagar ar Wikidata
Miotalacht 0.19[7] Cuir in eagar ar Wikidata
Lonrachas 2,200 solar luminosity (en) Aistrigh Cuir in eagar ar Wikidata
Aois measta 70 megaannum (en) Aistrigh Cuir in eagar ar Wikidata
Catalóga réalteolaíochta
α UMi (Bayer designation (en) Aistrigh)
ADS 1477 A (Aitken Double Star Catalogue (en) Aistrigh)
2MASS J02314822+8915503 (2MASS)
AAVSO 0122+88 (American Association of Variable Star Observers (en) Aistrigh)
ADS 1477 AP (Aitken Double Star Catalogue (en) Aistrigh)
AG+89 4 (Astronomische Gesellschaft Katalog (en) Aistrigh)
BD+88 8 (Durchmusterung (en) Aistrigh)
CCDM J02319+8915A (Catalog of Components of Double and Multiple Stars (en) Aistrigh)
CSI+88 8 1 (Catalog of Stellar Identifications (en) Aistrigh)
FK5 907 (FK5 (en) Aistrigh)
GC 2243 (Boss General Catalogue (en) Aistrigh)
GCRV 1037 (General Catalogue of Stellar Radial Velocities (en) Aistrigh)
GSC 04628-00237 (Guide Star Catalog (en) Aistrigh)
HD 8890 (Henry Draper Catalogue (en) Aistrigh)
HIC 11767 (Hipparcos Input Catalogue (en) Aistrigh)
HIP 11767 (Hipparcos Catalogue (en) Aistrigh)
HR 424 (Bright Star Catalogue (en) Aistrigh)
IDS 01226+8846 A (Index Catalogue of Visual Double Stars (en) Aistrigh)
IRAS 01490+8901 (IRAS (en) Aistrigh)
JP11 498 (JP11 (en) Aistrigh)
N30 381 (Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) Aistrigh)
PLX 299 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PLX 299.00 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PMC 90-93 640 (Tokyo Photoelectric Meridian Circle Catalog (en) Aistrigh)
PPM 431 (PPM Star Catalogue (en) Aistrigh)
ROT 3491 (Catalogue of rotational velocities of the stars (en) Aistrigh)
SAO 308 (Smithsonian Astrophysical Observatory Star Catalog (en) Aistrigh)
TD1 835 (TD1 Catalog of Stellar Ultraviolet Fluxes (en) Aistrigh)
TYC 4628-237-1 (Tycho Catalogue (en) Aistrigh)
UBV 21589 (UBV Photoelectric Photometry Catalogue (en) Aistrigh)
UBV M 8201 (Photoelectric catalogue, magnitudes and colors of stars in the UBV and UCBV systems (en) Aistrigh)
alf UMi (General Catalogue of Variable Stars (en) Aistrigh)
WDS J02318+8916A (Washington Double Star Catalog (en) Aistrigh)
WDS J02318+8916Aa,Ab (Washington Double Star Catalog (en) Aistrigh)
SBC9 76 (Eighth catalogue of the orbital elements of spectroscopic binary systems (en) Aistrigh)
SBC7 51 (Seventh catalogue of the orbital elements of spectroscopic binary systems (en) Aistrigh)
WEB 2438 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) Aistrigh)
1 UMi (Flamsteed designation (en) Aistrigh) Cuir in eagar ar Wikidata
An Réalta Thuaidh
  1. "Color excesses for supergiants and classical Cepheids. I. Calibration of the G-band photometry" (as An Béarla) (1960): 330–350. doi:10.1086/146837. 
  2. Ráite i: Catalogue of Stellar Photometry in Johnson's 11-color system. Teanga an tsaothair nó an ainm: An Béarla. Dáta foilsithe: 2002.
  3. 3.0 3.1 3.2 3.3 3.4 Floor van Leeuwen (2007). "Validation of the new Hipparcos reduction" (as An Béarla) (2): 653–664. doi:10.1051/0004-6361:20078357. 
  4. Ráite i: Catalogue of rotational velocities of the stars. Teanga an tsaothair nó an ainm: An Béarla. Dáta foilsithe: Meitheamh 1970.
  5. Ráite i: A catalogue of stellar rotational velocities. Leathanach: 1. Teanga an tsaothair nó an ainm: An Béarla. Dáta foilsithe: 1970.
  6. Ráite i: Gaia Data Release 2. Teanga an tsaothair nó an ainm: An Béarla. Dáta foilsithe: Aibreán 25, 2018.
  7. 7.0 7.1 "Stellar population models in the UV. I. Characterisation of the New Generation Stellar Library" (as An Béarla) (Feabhra 2012): A143. doi:10.1051/0004-6361/201118065.