Altair

Ón Vicipéid, an chiclipéid shaor.
WD Bosca Sonraí Réad RéalteolaíochAltair
Altair1.jpg
Cineálréalta, déréalta, réalta athraitheach, Delta Scuti variable (en) Aistrigh, foinse infridhearg, foinse x-gha réaltfhisiceach agus réalta threorach
Cineál speictreach (réalta)A7Vn[1] Cuir in eagar ar Wikidata
RéaltbhuíonAn tIolar Cuir in eagar ar Wikidata
AoisJ2000.0 Cuir in eagar ar Wikidata
Saintréithe fisiceacha agus réaltmhéadracha
Fad ón Domhan17 ly Cuir in eagar ar Wikidata
Ga1.7 ga gréine Cuir in eagar ar Wikidata
Leacú0.2[2] Cuir in eagar ar Wikidata
Dearbhmhéid2.22 Cuir in eagar ar Wikidata
Méid dhealraitheach (V)0.76[3] Cuir in eagar ar Wikidata
Mais1.7 M☉ Cuir in eagar ar Wikidata
Saobhdhiallas194.95 mas[4] Cuir in eagar ar Wikidata
Dualghluaisne (diallas)385.29 mas/y [4] Cuir in eagar ar Wikidata
Dualghluaisne (dronairde)536.23 mas/y [4] Cuir in eagar ar Wikidata
Luas rothlaithe réaltach240 km/s
90.8 km/s[5] Cuir in eagar ar Wikidata
Luas gathach−26.6 km/s[6] Cuir in eagar ar Wikidata
Imtharraingt dromchla9,000 cm/s²[5] Cuir in eagar ar Wikidata
Dronairde (α)19h 50m 46.9986s[4] Cuir in eagar ar Wikidata
Diallas (δ)8° 52′ 5.9563″[4] Cuir in eagar ar Wikidata
Miotalacht7.94[5] Cuir in eagar ar Wikidata
DathB-V colour (en) Aistrigh= 0.22
U-B colour (en) Aistrigh= 0.08 Cuir in eagar ar Wikidata
Lonrachas10.7 solar luminosity (en) Aistrigh Cuir in eagar ar Wikidata
Aois measta1,000,000,000 bliain Cuir in eagar ar Wikidata
Cuid deG-Cloud (en) Aistrigh agus Summer Triangle (en) Aistrigh Cuir in eagar ar Wikidata
Catalóga réalteolaíochta
SAO 125122 (Smithsonian Astrophysical Observatory Star Catalog (en) Aistrigh)
2MASS J19504698+0852060 (2MASS)
GSC 01058-03399 (Guide Star Catalog (en) Aistrigh)
HD 187642 (Henry Draper Catalogue (en) Aistrigh)
HIP 97649 (Hipparcos Catalogue (en) Aistrigh)
HR 7557 (Bright Star Catalogue (en) Aistrigh)
IRAS 19483+0844 (IRAS (en) Aistrigh)
GJ 768 (Gliese Catalogue of Nearby Stars (en) Aistrigh)
α Aql (Bayer designation (en) Aistrigh)
ADS 13009 A (Aitken Double Star Catalogue (en) Aistrigh)
1ES 1948+08.7 (Einstein Slew survey, Version No. 1 (en) Aistrigh)
1RXS J195047.0+085159 (1RXS (en) Aistrigh)
AG+08 2636 (Astronomische Gesellschaft Katalog (en) Aistrigh)
ASCC 1075038 (All-sky Compiled Catalogue (en) Aistrigh)
BD+08 4236 (Durchmusterung (en) Aistrigh)
CCDM J19508+0852A (Catalog of Components of Double and Multiple Stars (en) Aistrigh)
CSI+08 4236 1 (Catalog of Stellar Identifications (en) Aistrigh)
FK5 745 (FK5 (en) Aistrigh)
GC 27470 (Boss General Catalogue (en) Aistrigh)
GCRV 12193 (General Catalogue of Stellar Radial Velocities (en) Aistrigh)
HIC 97649 (Hipparcos Input Catalogue (en) Aistrigh)
IDS 19459+0836 A (Index Catalogue of Visual Double Stars (en) Aistrigh)
IRC +10441 (Two-Micron Sky Survey (en) Aistrigh)
JP11 3142 (JP11 (en) Aistrigh)
LFT 1499 (Luyten Five-Tenths catalogue (en) Aistrigh)
LHS 3490 (Luyten Half-Second catalogue (en) Aistrigh)
LSPM J1950+0852 (LSPM-NORTH catalog (en) Aistrigh)
LTT 15795 (Luyten Two-Tenths catalogue (en) Aistrigh)
N30 4388 (Catalog of 5,268 Standard Stars Based on the Normal System N30 (en) Aistrigh)
NLTT 48314 (New Luyten Two-Tenths catalogue (en) Aistrigh)
NSV 24910 (New Catalogue of Suspected Variable Stars (en) Aistrigh)
PLX 4665 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PLX 4665.00 (General Catalogue of Trigonometric Stellar Parallaxes (en) Aistrigh)
PMC 90-93 530 (Tokyo Photoelectric Meridian Circle Catalog (en) Aistrigh)
PPM 168779 (PPM Star Catalogue (en) Aistrigh)
RAFGL 2463 (The Revised AFGL (RAFGL) catalogue (en) Aistrigh)
ROT 2857 (Catalogue of rotational velocities of the stars (en) Aistrigh)
TD1 25537 (TD1 Catalog of Stellar Ultraviolet Fluxes (en) Aistrigh)
TYC 1058-3399-1 (Tycho Catalogue (en) Aistrigh)
UBV 16885 (UBV Photoelectric Photometry Catalogue (en) Aistrigh)
UBV M 24205 (Photoelectric catalogue, magnitudes and colors of stars in the UBV and UCBV systems (en) Aistrigh)
uvby98 100187642 (uvbyβ Photoelectric Photometric Catalogue (en) Aistrigh)
alf Aql (General Catalogue of Variable Stars (en) Aistrigh)
WDS J19508+0852A (Washington Double Star Catalog (en) Aistrigh)
Zkh 297 (Zhakozhaj (en) Aistrigh)
Ci 20 1169 (Catalogue of proper motion stars (en) Aistrigh)
PM 19484+0844 (Catalogs of proper-motion stars. I. Stars brighter than visual magnitude 15 and with annual proper motion of 1" or more (en) Aistrigh)
WEB 17173 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue (en) Aistrigh)
53 Aql (Flamsteed designation (en) Aistrigh) Cuir in eagar ar Wikidata

S’é Altair (α Aquilae, α Aql) an réalta is gile sa réaltbhuíon Aquila agus an dara réalta déag is gile i spéir na hoíche. Tá sé sa néall–G i láthair na huaire. Is réalta Cineál A den phríomhord é Altair a bhfuil ollméid radharcach fhollasach de 0.77 aige agus é ina cheann de trí rinn an Triantáin Samhraidh. Is iad an beirt rinn eile ná Deneb agus Vega. Tá sé faoi 16.7 solasbhlianta (5.13 parsoic) ón Domhain agus is ceann de na réaltaí is goire dúinn atá infheicthe don súil nocht. Rothlaíonn Altair go tapaidh, le luas ag an mheánchiorcal de tuairim is 286 clm/s. Nochtaigh staidéar leis an Palomar Triail-leaba Trasnamhéadar nach bhfuil Altair sféarúil ach go bhfuil sé maol treascartha ag na mólanna de bharr a ard ráta imrothlaithe. Dhearbhaigh staidéir trasnamhéadaracha eile le teileascóip iolracha ag oibriú san fhodhearg an feiniméan seo.

Carta Altair sa réaltbhuíon Aquila



Sonra Breathnaithe[cuir in eagar | athraigh foinse]

Réaltbhuíon Aquila

Ceartéirí 19u 50n 46.99855s

Díochlaonadh +08° 52′ 05.9563″

Méid Fhollasach 0.76

Cailíochtaí[cuir in eagar | athraigh foinse]

Céim éabhlóideach Príomh ord

Cineál speictreach A7 V

U−B Innéacs daith +0.09[2]

B−V Innéacs daith +0.22[2]

V−R Innéacs daith +0.14[2]

R−I Innéacs daith +0.13[2]

Cineál athróige Delta Scuti

Réaltmhéadracht[cuir in eagar | athraigh foinse]

Luas gathach −26.1 ± 0.9[3] clm/s

Saobhdhiallas 194.95 ± 0.57

cianfhad 16.73 ± 0.05 (5.13 ± 0.01

Dearbhmhéid 2.22

Mionphointí[cuir in eagar | athraigh foinse]

Mais 1.79 ± 0.018 M☉

Ga 1.63 to 2.03 R☉

Lonrachas 10.6 L☉

Imtharraingt dhromchlach (log g) 4.29 cgs

Teocht 6,900 to 8,500 K

Cóimheas miotalach [Fe/H] −0.2 dex

Rothlú 8.9 hours[6]

Luas rothlaithe (v sin i) 240[5] clm/s

Aois 630[4] Msbh

Ainmneacha eile

Atair, α Aquilae, α Aql, Alpha Aquilae, Alpha Aql, 53 Aquilae, 53 Aql, BD+08°4236, FK5 745, GCTP 4665.00, GJ 768, HD 187642, HIP 97649, HR 7557, LFT 1499, LHS 3490, LTT 15795, NLTT 48314, SAO 125122, WDS 19508+0852A.[3][8][9]

Tagairtí stórsonracha SIMBAD sonra

  1. Christopher J. Corbally (Deireadh Fómhair 2003). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 Parsecs: The Northern Sample. I" (as an Béarla) (4): 2048–2059. doi:10.1086/378365. 
  2. URL tagartha: https://iopscience.iop.org/article/10.1086/322340.
  3. Ráite i: Catalogue of Stellar Photometry in Johnson's 11-color system. Teanga an tsaothair nó an ainm: an Béarla. Dáta foilsithe: 2002.
  4. 4.0 4.1 4.2 4.3 4.4 Floor van Leeuwen (2007). "Validation of the new Hipparcos reduction" (as an Béarla) (2): 653–664. doi:10.1051/0004-6361:20078357. 
  5. 5.0 5.1 5.2 "Abundances in the local region. II. F, G, and K dwarfs and subgiants" (Nollaig 21, 2016) (1): 21–21. doi:10.3847/1538-3881/153/1/21. 
  6. "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system" (as an Béarla) (Samhain 2006) (11): 759–771. doi:10.1134/S1063773706110065.