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Arcturus

Ón Vicipéid, an chiclipéid shaor.
WD Bosca Sonraí Réad RéalteolaíochArcturus
Cineálréalta threorach, foinse neas-infridhearg agus UV-emission source (en) Aistrigh
Cineál speictreach (réalta)K2IIIp[1] Cuir in eagar ar Wikidata
RéaltbhuíonAn tAoire Cuir in eagar ar Wikidata
AoisJ2000.0 Cuir in eagar ar Wikidata
Saintréithe fisiceacha agus réaltmhéadracha
Fad ón Domhan36.7 ly Cuir in eagar ar Wikidata
Ga25.4 R☉ Cuir in eagar ar Wikidata
Dearbhmhéid−0.38
−0.304[2] Cuir in eagar ar Wikidata
Méid dhealraitheach (V)−0.05 (banda V)[3] Cuir in eagar ar Wikidata
Mais1.3 M☉ Cuir in eagar ar Wikidata
Teocht éifeachtach4,251 K[4] Cuir in eagar ar Wikidata
Saobhdhiallas87.5 mas[5] Cuir in eagar ar Wikidata
Dualghluaisne (diallas)−1,999.96 mas/y [5] Cuir in eagar ar Wikidata
Dualghluaisne (dronairde)−1,092.66 mas/y [5] Cuir in eagar ar Wikidata
Luas rothlaithe réaltach4.2 km/s[6] Cuir in eagar ar Wikidata
Luas gathach−5.16 km/s[7] Cuir in eagar ar Wikidata
Imtharraingt dromchla52 cm/s²[4] Cuir in eagar ar Wikidata
Dronairde (α)14h 15m 39.6721s[8] Cuir in eagar ar Wikidata
Diallas (δ)19° 10′ 56.673″[8] Cuir in eagar ar Wikidata
Miotalacht−0.57[9] Cuir in eagar ar Wikidata
DathU-B colour (en) Aistrigh= 1.27 Cuir in eagar ar Wikidata
Lonrachas215 solar luminosity (en) Aistrigh Cuir in eagar ar Wikidata
Compánaighalf Boo B Cuir in eagar ar Wikidata
Cuid deArcturus stream (en) Aistrigh, Spring Triangle (en) Aistrigh agus An tAoire Cuir in eagar ar Wikidata
Catalóga réalteolaíochta
HD 124897 (Henry Draper Catalogue (en) Aistrigh)
HIP 69673 (Hipparcos Catalogue (en) Aistrigh)
HR 5340 (Bright Star Catalogue (en) Aistrigh)
IRAS 14133+1925 (IRAS (en) Aistrigh)
SAO 100944 (Smithsonian Astrophysical Observatory Star Catalog (en) Aistrigh)
2MASS J14153968+1910558 (2MASS)
GJ 541 (Gliese Catalogue of Nearby Stars (en) Aistrigh)
α Boo (Bayer designation (en) Aistrigh)
ASCC 870215 (All-sky Compiled Catalogue (en) Aistrigh)
BD+19 2777 (Durchmusterung (en) Aistrigh)
CSV 101433 (Catalogue of suspected variable stars (en) Aistrigh)
FK5 526 (FK5 (en) Aistrigh)
GC 19242 (Boss General Catalogue (en) Aistrigh)
GCRV 8341 (General Catalogue of Stellar Radial Velocities (en) Aistrigh)
HIC 69673 (Hipparcos Input Catalogue (en) Aistrigh)
IRC +20270 (Two-Micron Sky Survey (en) Aistrigh)
JP11 2486 (JP11 (en) Aistrigh)
LFT 1084 (Luyten Five-Tenths catalogue (en) Aistrigh)
LHS 48 (Luyten Half-Second catalogue (en) Aistrigh)
LSPM J1415+1910 (LSPM-NORTH catalog (en) Aistrigh)
LTT 14184 (Luyten Two-Tenths catalogue (en) Aistrigh)
N30 3229 (Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) Aistrigh)
NLTT 36756 (New Luyten Two-Tenths catalogue (en) Aistrigh)
NSV 6603 (New Catalogue of Suspected Variable Stars (en) Aistrigh)
PLX 3242 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PLX 3242.00 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PMC 90-93 376 (Tokyo Photoelectric Meridian Circle Catalog (en) Aistrigh)
PPM 130442 (PPM Star Catalogue (en) Aistrigh)
RAFGL 1693 (The Revised AFGL (RAFGL) catalogue (en) Aistrigh)
ROT 2044 (Catalogue of rotational velocities of the stars (en) Aistrigh)
SRS 30526 (Southern Reference Star Catalog (en) Aistrigh)
TD1 17351 (TD1 Catalog of Stellar Ultraviolet Fluxes (en) Aistrigh)
TYC 1472-1436-1 (Tycho Catalogue (en) Aistrigh)
UBV 12551 (UBV Photoelectric Photometry Catalogue (en) Aistrigh)
uvby98 100124897 (uvbyβ Photoelectric Photometric Catalogue (en) Aistrigh)
YPAC 52 (Yunnan Photoelectric Astrolabe Catalogue (en) Aistrigh)
CCDM J14157+1911A (Catalog of Components of Double and Multiple Stars (en) Aistrigh)
WDS J14157+1911A (Washington Double Star Catalog (en) Aistrigh)
Ci 20 843 (Catalogue of proper motion stars (en) Aistrigh)
PM 14134+1927 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) Aistrigh)
PM 14134-1927 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) Aistrigh)
WEB 12132 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) Aistrigh)
16 Boo (Flamsteed designation (en) Aistrigh)
TIC 459832522 (TESS Input Catalog (en) Aistrigh)
AAVSO 1411+19 (AAVSO (en) Aistrigh)
AG+19 1335 (AGK3U (en) Aistrigh)
UBV M 20076 (UBV Photoelectric Photometry Catalogue (en) Aistrigh) Cuir in eagar ar Wikidata

Is Arcturus (α Boo, α Boötis, Alpha Boötis) sa réaltbhuíon Boötes an réalta is gile sa leathsféar thuaidh spéartha. Le mhéid radharcach de −0.05, s’é an ceathrú réalta is gile i spéir na hoíche ag leanúint Sirius de mhéid -1.46, Canopus de mhéid -0.86 agus Alpha Centauri de mhéid -0.27. Tá sé ina réalta i ngar go maith mar níl sé ach ar chianfhad de 36.7 solasbhliain ón Dhomhain agus mar aon le Vega agus Sirius is cheann de na réaltaí is lonraí i gcomharsanacht na Gréine é.

Cineál[cuir in eagar | athraigh foinse]

Tá Arcturus ina réalta oráisteach de chineál K0 III le dearbhmhéid de -0.30. Is dócha go bhfuil a hidrigin cáite óna chorplár agus go bhfuil sé anois ina réim loscaidh slige hidrigine. Leanfaidh sé ag méadú roimh dul isteach sa réim craobh cothrománach dá thimthriall beatha.

Tá Arcturus i réaltbhuíon Boötes.


Sonra Breathnaithe[cuir in eagar | athraigh foinse]

Réaltbhuíon Boötes

Fuaimneadh /ɑːrkˈtjʊərəs/

Ceartéirí 14u 15n 39.7s

Díochlaonadh +19° 10′ 56″

Méid fhollasach (breathnaithe) −0.05

Tréithe[cuir in eagar | athraigh foinse]

Cineál speictreach K0 III

Méid fhollasach (radharcach) −2.25

U−B innéacs dathach +1.28

B−V innéacs dathach +1.23

R−I innéacs dathach +0.65

Nóta (catagóir: athrógach): H and K astaíocht

Réaltmhéadracht[cuir in eagar | athraigh foinse]

Luas gathach (Rv) −5.19 km/s

Gluaiseacht ceart (μ) RA: −1093.45 mais/yr

Dec.: −1999.40[5] mais/bhl

Saobhdhiallas (π) 88.83 ± 0.54[1] mais

Cianfhad 36.7 ± 0.2 sbh ,, (11.26 ± 0.07 pc)

Dearbhmhéid (MV) −0.30±0.02


Mionphointí[cuir in eagar | athraigh foinse]

Mais 1.08±0.06 M☉

Ga 25.4±0.2 R☉

Lonrachas 170 L☉

Imtharraingt dromchlach (log g) 1.66±0.05 cgs

Teocht 4286±30 K

Cóimheas miotalach [Fe/H] −0.52±0.04 dex

Luas rothlaithe (v sin i) 2.4±1.0 km/s

Aois 7.1+1.5 | −1.2 Gbhl

Ainmchomharthaí eile[cuir in eagar | athraigh foinse]

Alramech, Abramech, α Boötis, 16 Boötes, BD+19°2777, GCTP 3242.00, GJ 541, HD 124897, HIP 69673, HR 5340, LHS 48, SAO 100944.

Tagairtí storshonracha SIMBAD sonra

  1. Olin J. Eggen (1962). "Space-velocity vectors for 3483 stars with proper motion and radial velocity": 79. 
  2. Caroline Soubiran (Márta 2008). "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants" (as Béarla) (1): 91–101. doi:10.1051/0004-6361:20078788. 
  3. Ráite i: Catalogue of Stellar Photometry in Johnson's 11-color system. Stated in source according to: SIMBAD. Teanga an tsaothair nó an ainm: Béarla. Dáta foilsithe: 2002.
  4. 4.0 4.1 Henrik Jönsson (8 Feabhra 2017). "Abundances of disk and bulge giants from high-resolution optical spectra. I. O, Mg, Ca, and Ti in the solar neighborhood and Kepler field samples" (as Béarla). doi:10.1051/0004-6361/201629128. 
  5. 5.0 5.1 5.2 George David Gatewood (13 Meitheamh 2008). "Astrometric Studies of Aldebaran, Arcturus, Vega, the Hyades, and Other Regions" (as Béarla) (1): 452–460. doi:10.1088/0004-6256/136/1/452. 
  6. David Latham (7 Nollaig 2007). "Rotational and radial velocities for a sample of 761 Hipparcos giants and the role of binarity" (as Béarla) (1): 209–231. doi:10.1088/0004-6256/135/1/209. 
  7. Henrik Jönsson (8 Feabhra 2017). "Abundances of disk and bulge giants from high-resolution optical spectra. I. O, Mg, Ca, and Ti in the solar neighborhood and Kepler field samples" (as Béarla). doi:10.1051/0004-6361/201629128. 
  8. 8.0 8.1 Floor van Leeuwen (2007). "Validation of the new Hipparcos reduction" (as Béarla) (2): 653–664. doi:10.1051/0004-6361:20078357. 
  9. Richard J. Patterson (5 Nollaig 2012). "Identifying contributions to the stellar halo from accreted, kicked-out, and in situ populations" (as Béarla) (2): 161. doi:10.1088/0004-637X/761/2/161.