Réalta Barnard

Ón Vicipéid, an chiclipéid shaor.
WD Bosca Sonraí Réad RéalteolaíochRéalta Barnard
Barnardstar2006.jpg
Cineálred dwarf (en) Aistrigh, réalta ard-dualghluaisne agus Population II star (en) Aistrigh
Cineál speictreach (réalta)M3.5V[1] Cuir in eagar ar Wikidata
EapainmEdward Emerson Barnard
RéaltbhuíonFear na bPéisteanna Cuir in eagar ar Wikidata
AoisJ2000.0 Cuir in eagar ar Wikidata
Saintréithe fisiceacha agus réaltmhéadracha
Fad ón Domhan5.96 ly
1.8266 pc [2] Cuir in eagar ar Wikidata
Ga0.175 ga gréine Cuir in eagar ar Wikidata
Dearbhmhéid13.26 Cuir in eagar ar Wikidata
Méid dhealraitheach (V)9.511[3] Cuir in eagar ar Wikidata
Mais0.17 M☉ Cuir in eagar ar Wikidata
Saobhdhiallas546.98 mas
547.4506 mas[2] Cuir in eagar ar Wikidata
Dualghluaisne (diallas)10,362.542 mas/y [2] Cuir in eagar ar Wikidata
Dualghluaisne (dronairde)−802.803 mas/y [2] Cuir in eagar ar Wikidata
Luas gathach−110.579 km/s[4] Cuir in eagar ar Wikidata
Imtharraingt dromchla160,000 cm/s²[5] Cuir in eagar ar Wikidata
Dronairde (α)17h 57m 48.4998s[2] Cuir in eagar ar Wikidata
Diallas (δ)4° 41′ 36.1114″[2] Cuir in eagar ar Wikidata
Miotalacht−0.26[6]
−0.35[6]
−0.41[6] Cuir in eagar ar Wikidata
Lonrachas0.00346 solar luminosity (en) Aistrigh Cuir in eagar ar Wikidata
Aois measta8.5 gigaannum (en) Aistrigh[7] Cuir in eagar ar Wikidata
Catalóga réalteolaíochta
2MASS J17574849+0441405 (2MASS)
GSC 00425-00184 (Guide Star Catalog (en) Aistrigh)
GSC 00425-02502 (Guide Star Catalog (en) Aistrigh)
HIP 87937 (Hipparcos Catalogue (en) Aistrigh)
IRAS 17553+0438 (IRAS (en) Aistrigh)
GJ 699 (Gliese Catalogue of Nearby Stars (en) Aistrigh)
ASCC 1153178 (All-sky Compiled Catalogue (en) Aistrigh)
CCDM J17578+0441A (Catalog of Components of Double and Multiple Stars (en) Aistrigh)
CSV 7737 (Catalogue of suspected variable stars (en) Aistrigh)
GCRV 10392 (General Catalogue of Stellar Radial Velocities (en) Aistrigh)
HIC 87937 (Hipparcos Input Catalogue (en) Aistrigh)
JP11 18 (JP11 (en) Aistrigh)
LFT 1385 (Luyten Five-Tenths catalogue (en) Aistrigh)
LHS 57 (Luyten Half-Second catalogue (en) Aistrigh)
LSPM J1757+0441 (LSPM-NORTH catalog (en) Aistrigh)
LTT 15309 (Luyten Two-Tenths catalogue (en) Aistrigh)
NLTT 45718 (New Luyten Two-Tenths catalogue (en) Aistrigh)
NSV 9910 (New Catalogue of Suspected Variable Stars (en) Aistrigh)
PLX 4098 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PLX 4098.00 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
UBV 15269 (UBV Photoelectric Photometry Catalogue (en) Aistrigh)
UCAC2 33428712 (Second USNO CCD Astrograph Catalog (en) Aistrigh)
UCAC4 474-068224 (Fourth USNO CCD Astrograph Catalog (en) Aistrigh)
uvby98 000403561 (uvbyβ Photoelectric Photometric Catalogue (en) Aistrigh)
Zkh 269 (Zhakozhaj (en) Aistrigh)
Karmn J17578+046 (CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS (en) Aistrigh)
AC2000 146626 (The AC 2000: the astrographic catalogue on the system defined by the Hipparcos catalogue (en) Aistrigh)
BD+04 3561a (Durchmusterung (en) Aistrigh)
CSI+04-17554 (Microfiche edition of CSI (en) Aistrigh)
Ci 20 1069 (Catalogue of proper motion stars (en) Aistrigh)
TYC 425-2502-1 (catalóg Tycho-2)
PM J17578+0441N (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) Aistrigh)
WEB 14849 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) Aistrigh)
Gaia DR2 4472832130942575872 (Gaia Data Release 2 (en) Aistrigh) Cuir in eagar ar Wikidata

Is í Réalta Barnard an ceathrú réalta ar an spéir is cóngaraí dúinn, nó an dara ceann is cóngaraí, má áirítear trí réalta Alpha Centauri mar aon réalta amháin. Tá Réalta Barnard suite faoi 5.96 solasbhliain dínn, nó 1.8 parsoic. Tá sí le feiceáil i réaltbhuíon Fhear na bPéisteanna, ach le fírinne, ní cuid súl í, ós rud é nach bhfuil inti ach abhacréalta dhearg.

Tá Réalta Barnard ainmnithe as an réalteolaí Meiriceánach Edward Emerson Barnard, a chuir an chéad sonrú inti sa bhliain 1916.

  1. Alexis Klutsch (Bealtaine 2015). "CARMENES input catalogue of M dwarfs. I. Low-resolution spectroscopy with CAFOS" (as an Béarla): 128–128. doi:10.1051/0004-6361/201525803. 
  2. 2.0 2.1 2.2 2.3 2.4 2.5 Ráite i: Gaia Data Release 2. Teanga an tsaothair nó an ainm: an Béarla. Dáta foilsithe: Aibreán 25, 2018.
  3. "UBV(RI)CJHK observations of Hipparcos-selected nearby stars" (as an Béarla) (Aibreán 21, 2010) (4): 1949–1968. doi:10.1111/J.1365-2966.2009.16182.X. 
  4. M. Lampón (Aibreán 2018). "The CARMENES search for exoplanets around M dwarfs. High-resolution optical and near-infrared spectroscopy of 324 survey stars" (as an Béarla): 49–49. doi:10.1051/0004-6361/201732054. 
  5. Caroline Soubiran (Márta 2008). "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants" (as an Béarla) (1): 91–101. doi:10.1051/0004-6361:20078788. 
  6. 6.0 6.1 6.2 Suvrath Mahadevan (Meán Fómhair 21, 2015). "A near-infrared spectroscopic survey of 886 nearby M dwarfs" (as an Béarla) (1): 16. doi:10.1088/0067-0049/220/1/16. 
  7. Ráite i: Extrasolar Planets Encyclopaedia. Extrasolar Planets Encyclopaedia exoplanet ID: star b/ Barnard's star b. Teanga an tsaothair nó an ainm: an Béarla.