HD 188405
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Aquila |
| Right ascension | 19h 55m 19.50021s[1] |
| Declination | −06° 44′ 05.2223″[1] |
| Apparent magnitude (V) | 6.51[2] (6.94 + 7.98)[3] |
| Characteristics | |
| Spectral type | F2V[3] |
| U−B color index | +0.05[2] |
| B−V color index | +0.39[2] |
| Astrometry | |
| Radial velocity (Rv) | −13.10[4] km/s |
| Proper motion (μ) | RA: +16.58[1] mas/yr Dec.: −60.18[1] mas/yr |
| Parallax (π) | 12.22 ± 0.84[1] mas |
| Distance | 270 ± 20 ly (82 ± 6 pc) |
| Details | |
| Luminosity | 13[5] L☉ |
| Temperature | 6,645[5] K |
| Other designations | |
| 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″.[6]
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 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
- 1 2 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. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
- 1 2 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
- ↑ Cvetkovic, Z.; Ninkovic, S. (2010), "On the Component Masses of Visual Binaries", Serbian Astronomical Journal 180: 71–80, Bibcode:2010SerAJ.180...71C, doi:10.2298/SAJ1080071C
External links
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