Astronomy:HD 180262
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Short description: Wide double star in the constellation Aquila
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 15m 20.08999s[1] |
| Declination | +15° 05′ 01.1456″[1] |
| Apparent magnitude (V) | 5.57[2] (5.75 + 7.69)[3] |
| Characteristics | |
| Spectral type | G8II-III + A1V[3] |
| U−B color index | +0.85[2] |
| B−V color index | +1.10[2] |
| R−I color index | 0.54 |
| Astrometry | |
| Radial velocity (Rv) | −25.2[4] km/s |
| Proper motion (μ) | RA: +0.55[1] mas/yr Dec.: −11.10[1] mas/yr |
| Parallax (π) | 5.32 ± 0.9[1] mas |
| Distance | approx. 600 ly (approx. 190 pc) |
| Details | |
| HD 180262 A | |
| Radius | 50[5] R☉ |
| Luminosity | 323[6] L☉ |
| Surface gravity (log g) | 2.0[7] cgs |
| Temperature | 4,308[8] K |
| Metallicity [Fe/H] | 0.21[8] dex |
| Rotational velocity (v sin i) | 1.4[7] km/s |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Database references | |
| SIMBAD | data |
HD 180262 is a wide double star in the equatorial constellation of Aquila. The pair have an angular separation of 89.823″.[3]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics 474 (2): 653–664. doi:10.1051/0004-6361:20078357. Bibcode: 2007A&A...474..653V.
- ↑ 2.0 2.1 2.2 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode: 1986EgUBV........0M
- ↑ 3.0 3.1 3.2 Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society 389 (2): 869–879, doi:10.1111/j.1365-2966.2008.13596.x, Bibcode: 2008MNRAS.389..869E
- ↑ Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters 32 (11): 759–771. doi:10.1134/S1063773706110065. Bibcode: 2006AstL...32..759G.
- ↑ Pasinetti Fracassini, L. E. et al. (February 2001), "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics", Astronomy and Astrophysics 367 (2): 521–524, doi:10.1051/0004-6361:20000451, Bibcode: 2001A&A...367..521P
- ↑ McDonald, I. et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society 427 (1): 343–57, doi:10.1111/j.1365-2966.2012.21873.x, Bibcode: 2012MNRAS.427..343M
- ↑ 7.0 7.1 Lèbre, A.; de Laverny, P.; Do Nascimento, J. D. Jr.; de Medeiros, J. R. (May 2006), "Lithium abundances and rotational behavior for bright giant stars", Astronomy and Astrophysics 450 (3): 1173–1179, doi:10.1051/0004-6361:20053485, Bibcode: 2006A&A...450.1173L
- ↑ 8.0 8.1 Greenstein, Jesse L.; Keenan, Philip C. (January 1958), "Abundances of Metals, CN, and CH in Giant Stars", Astrophysical Journal 127: 172, doi:10.1086/146449, Bibcode: 1958ApJ...127..172G
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