Delta de l'Àguila

Infotaula objecte astronòmicDelta de l'Àguila
Tipusestrella variable, font d'infrarojos, font astrofísica de rajos X, estrella doble, font propera a infrarrojos i font d'emissió de raigs UV Modifica el valor a Wikidata
Tipus espectral (estel)F1IV-V(n)[1] Modifica el valor a Wikidata
Constel·lacióÀguila Modifica el valor a Wikidata
ÈpocaJ2000.0 Modifica el valor a Wikidata
Dades orbitals
Excentricitat e0,36[2] Modifica el valor a Wikidata
Característiques físiques i astromètriques
Radi2,04 R☉ Modifica el valor a Wikidata
Magnitud absoluta2,46 Modifica el valor a Wikidata
Magnitud aparent (V)3,36 (banda V)[3] Modifica el valor a Wikidata
Massa1,65 M☉ Modifica el valor a Wikidata
Temperatura efectiva7.396 K[4] Modifica el valor a Wikidata
Paral·laxi64,41 mas[5] Modifica el valor a Wikidata
Moviment propi (declinació)82,51 mas/a [5] Modifica el valor a Wikidata
Moviment propi (ascensió recta)254,54 mas/a [5] Modifica el valor a Wikidata
Velocitat de rotació estel·lar87,3 km/s[6] Modifica el valor a Wikidata
Velocitat radial−34 km/s[7] Modifica el valor a Wikidata
Gravetat superficial equatorial18.600 cm/s²[4] Modifica el valor a Wikidata
Ascensió recta (α)19h 25m 29.9014s[5] Modifica el valor a Wikidata
Declinació (δ)3° 6' 53.2061''[5] Modifica el valor a Wikidata
Metal·licitat−0,06[4] Modifica el valor a Wikidata
Lluminositat8,9 lluminositats solars Modifica el valor a Wikidata
Edat estimada2.000.000.000 mil milions d'anys[8] Modifica el valor a Wikidata
Catàlegs astronòmics
SAO 124603 (Catàleg SAO)
2MASS J19252990+0306532 (2MASS)
HD 182640 (Henry Draper Catalogue)
HIP 95501 (Catàleg Hipparcos)
HR 7377 (Catàleg d'Estrelles Brillants)
GJ 760 (Gliese Catalogue of Nearby Stars)
BD+02 3879 (Bonner Durchmusterung)
δ Aql (nomenclatura de Bayer)
1RXS J192530.0+030640 (1RXS)
2EUVE J1925+03.1 (The second Extreme Ultraviolet Explorer source catalog)
ASCC 1160894 (All-sky Compiled Catalogue)
CCDM J19254+0307A (Catàleg de Components d'Estrelles Dobles i Múltiples)
CSV 101835 (Catalogue of suspected variable stars)
EUVE J1925+03.1 (The first Extreme Ultraviolet Explorer source catalog)
FK5 730 (FK5)
GC 26816 (Catàleg General de Boss)
GCRV 11863 (General Catalogue of Stellar Radial Velocities)
HIC 95501 (Hipparcos Input Catalogue)
IDS 19205+0255 A (Index Catalogue of Visual Double Starsanglès)
IRAS 19229+0300 (IRAS)
IRC +00429 (Two-Micron Sky Survey)
JP11 3101 (JP11)
LSPM J1925+0306 (LSPM-NORTH catalog)
LTT 15672 (Luyten Two-Tenths catalogue)
N30 4301 (Catalog of 5,268 Standard Stars Based on the Normal System N30)
NLTT 47775 (New Luyten Two-Tenths catalogue)
NSV 12004 (New Catalogue of Suspected Variable Stars)
PLX 4542 (Catàleg General de Paral·laxis Estel·lars Trigonomètriques)
PMC 90-93 519 (Tokyo Photoelectric Meridian Circle Catalog)
PPM 167816 (Catàleg d'estrelles PPM)
ROT 2793 (Catàleg de velocitats rotacionals dels estels)
TD1 24638 (Catàleg de Fluxes Estel·lars Ultraviolats TD1)
TYC 469-6227-1 (Catàleg Tycho)
UBV 16450 (UBV)
WDS J19255+0307A (Catàleg d'Estrelles Dobles Washington)
WDS J19255+0307Aa,Ab (Catàleg d'Estrelles Dobles Washington)
WEB 16698 (Vitesses radiales. Catalogue WEB: Wilson Evans Batten. Radial velocities: The Wilson-Evans-Batten catalogue)
30 Aql (Nomenclatura de Flamsteed)
Gaia DR3 4289041379340453376 (Gaia DR3)
Gaia DR2 4289041379334773888 (Gaia Data Release 2)
UCAC4 466-102721 (Fourth USNO CCD Astrograph Catalog)
TIC 228896480 (TESS Input Catalog)
AG+03 2453 (AGK3U)
UBV M 23752 (UBV)
Renson 50510 (General catalogue of AP and AM stars) Modifica el valor a Wikidata

Delta de l'Àguila (δ Aquilae) és un sistema estel·lar triple de la constel·lació de l'Àguila. Està aproximadament a 50,1 anys llum de la Terra.

Es tracta d'una binària astromètrica. La component visible és una groga-blanca del tipus F subgeganta, amb una magnitud aparent de +3,36. El període orbital de la binària és de 3,422 anys. La component visible és una binària espectroscòpica, la qual cosa eleva el nombre de components a tres. La binària espectroscòpica té un període orbital de 3,77 hores.

Referències

  1. «The Physical Basis of Luminosity Classification in the Late A-, F-, and Early G-Type Stars. I. Precise Spectral Types for 372 Stars» (en anglès). Astronomical Journal, 4, 4-2001, pàg. 2148–2158. DOI: 10.1086/319956.
  2. URL de la referència: https://dx.doi.org/10.1086%2F115169.
  3. Afirmat a: Catalogue of Stellar Photometry in Johnson's 11-color system. Indicat a la font segons: SIMBAD. Llengua del terme, de l'obra o del nom: anglès. Data de publicació: 2002.
  4. 4,0 4,1 4,2 Eva Grebel «SP_Ace: a new code to derive stellar parameters and elemental abundances» (en anglès). Astronomy and Astrophysics, 11-02-2016, pàg. 2–2. DOI: 10.1051/0004-6361/201526758.
  5. 5,0 5,1 5,2 5,3 5,4 Floor van Leeuwen «Validation of the new Hipparcos reduction» (en anglès). Astronomy and Astrophysics, 2, 2007, pàg. 653–664. DOI: 10.1051/0004-6361:20078357.
  6. «Ca II HK emission in rapidly rotating stars» (en anglès). Astronomy and Astrophysics, 3, 1-2009, pàg. 1099–1107. DOI: 10.1051/0004-6361:200810377.
  7. «Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system» (en anglès). Astronomy Letters, 11, 11-2006, pàg. 759–771. DOI: 10.1134/S1063773706110065.
  8. URL de la referència: http://stars.astro.illinois.edu/sow/deltaaql.html.

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