HD 180262
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| 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 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752
. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. - 1 2 3 Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV data. SIMBAD, Bibcode:1986EgUBV........0M
- 1 2 3 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, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x
- ↑ 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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- ↑ 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: 521–524, arXiv:astro-ph/0012289, Bibcode:2001A&A...367..521P, doi:10.1051/0004-6361:20000451
- ↑ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x
- 1 2 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, Bibcode:2006A&A...450.1173L, doi:10.1051/0004-6361:20053485
- 1 2 Greenstein, Jesse L.; Keenan, Philip C. (January 1958), "Abundances of Metals, CN, and CH in Giant Stars", Astrophysical Journal, 127: 172, Bibcode:1958ApJ...127..172G, doi:10.1086/146449
External links
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