HD 188405
In today's world, HD 188405 has become a topic of great relevance and interest to a wide spectrum of people. The importance of HD 188405 has been recognized by experts in various areas, who have highlighted its impact on modern society. Since its emergence, HD 188405 has sparked debates and reflections around its influence on different aspects of daily life. In this article, we will explore in depth the meaning and implications of HD 188405, analyzing its different dimensions and its relevance in the current context.
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila[1] |
| Right ascension | 19h 55m 19.50021s[2] |
| Declination | −06° 44′ 05.2223″[2] |
| Apparent magnitude (V) | 6.51[3] (6.94 + 7.98)[4] |
| Characteristics | |
| Spectral type | F2V[4] |
| U−B color index | +0.05[3] |
| B−V color index | +0.39[3] |
| Astrometry | |
| Radial velocity (Rv) | −13.10[5] km/s |
| Proper motion (μ) | RA: +16.58[2] mas/yr Dec.: −60.18[2] mas/yr |
| Parallax (π) | 12.22±0.84 mas[2] |
| Distance | 270 ± 20 ly (82 ± 6 pc) |
| Absolute magnitude (MV) | +1.94[1] |
| Orbit[6] | |
| Period (P) | 425±22 yr |
| Semi-major axis (a) | 1.085±0.024″ |
| Eccentricity (e) | 0.9414±0.0020 |
| Inclination (i) | 103.05±0.84° |
| Longitude of the node (Ω) | 264.03±0.77° |
| Periastron epoch (T) | B 1974.28±0.23 |
| Argument of periastron (ω) (secondary) | 327.9±1.7° |
| Details | |
| HD 188405 A | |
| Mass | 1.4[7] M☉ |
| Radius | 2.8[7] R☉ |
| Luminosity | 13[7] L☉ |
| Temperature | 6,646[7] K |
| Other designations | |
| BD−07°5102, HD 188405, HIP 98038, HR 7599, SAO 143911 | |
| Database references | |
| SIMBAD | data |
HD 188405 is a binary star in the equatorial constellation of Aquila. The pair have an orbital period of roughly 425 years and an angular separation of 1.085″.[8]
References
- ^ a b Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015.
- ^ a b c d e 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. S2CID 18759600.
- ^ a b c Nicolet, B. (1978). "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System". Astronomy and Astrophysics Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N.
- ^ a b Malkov, O. Yu.; et al. (2012). "Dynamical Masses of a Selected Sample of Orbital Binaries". Astronomy & Astrophysics. 546: 5. Bibcode:2012A&A...546A..69M. doi:10.1051/0004-6361/201219774. A69.
- ^ 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. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065. S2CID 119231169.
- ^ "Sixth Catalog of Orbits of Visual Binary Stars". United States Naval Observatory. Archived from the original on 1 August 2017. Retrieved 21 May 2017.
- ^ a b c d Chandler, Colin Orion; McDonald, Iain; Kane, Stephen R. (2016). "The Catalog of Earth-Like Exoplanet Survey Targets (CELESTA): A Database of Habitable Zones Around Nearby Stars". The Astronomical Journal. 151 (3): 59. arXiv:1510.05666. Bibcode:2016AJ....151...59C. doi:10.3847/0004-6256/151/3/59. S2CID 119246448.
- ^ Cvetkovic, Z.; Ninkovic, S. (2010). "On the Component Masses of Visual Binaries". Serbian Astronomical Journal. 180 (180): 71–80. Bibcode:2010SerAJ.180...71C. doi:10.2298/SAJ1080071C.
External links
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