HD 158633: Difference between revisions
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[[Category:Draco constellation]] |
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[[Category:K-type main sequence stars]] |
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Revision as of 18:36, 13 March 2010
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Draco |
| Right ascension | 17h 25m 00.0985s[1] |
| Declination | +67° 18′ 24.137″[1] |
| Apparent magnitude (V) | 6.43[2] |
| Characteristics | |
| Spectral type | K0 V[2] |
| U−B color index | +0.29[3] |
| B−V color index | +0.76[3] |
| Astrometry | |
| Radial velocity (Rv) | −40[4] km/s |
| Proper motion (μ) | RA: −531.03[1] mas/yr Dec.: 3.62[1] mas/yr |
| Parallax (π) | 78.14 ± 0.51 mas[1] |
| Distance | 41.7 ± 0.3 ly (12.80 ± 0.08 pc) |
| Absolute magnitude (MV) | 5.89[5] |
| Details | |
| Radius | 0.86[6] R☉ |
| Surface gravity (log g) | 4.80[7] cgs |
| Temperature | 5,400[7] K |
| Metallicity | −0.43 ± 0.08[8] |
| Age | 4.27 × 109[8] years |
| Other designations | |
HD 158633 is a main sequence star in the constellation Draco. This star is too faint to be observed with the unaided eye, but can be seen with a small telescope. It has a spectral classification of K0 V and has about 86% of the Sun's radius.[6] This star is emitting an excess of infrared radiation at a wavelength of 70 μm.[8] It has a low metallicity, with only 37% of the Sun's abundance of elements more massive than helium, and has a relatively high proper motion.[2]
References
- ^ a b c d e Perryman, M. A. C.; et al. (1997). "The Hipparcos Catalogue". Astronomy and Astrophysics. 323: L49 – L52. Bibcode:1997A&A...323L..49P.
{{cite journal}}: Explicit use of et al. in:|author=(help) - ^ a b c d "LHS 3287 -- High proper-motion Star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2009-04-14.
- ^ a b Hauck, B.; Mermilliod, M. (1998). "uvbyβ photoelectric photometric catalogue". Astronomy and Astrophysics Supplement Series. 129: 431–433. doi:10.1051/aas:1998195.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ Wilson, Ralph Elmer (1953). General catalogue of stellar radial velocities. Washington, DC: Carnegie Institution of Washington. Bibcode:1953GCRV..C......0W.
- ^ Kovtyukh, V. V.; Soubiran, C.; Belik, S. I. (2004). "A new Böhm-Vitense gap in the temperature range 5560 to 5610 K in the main sequence". Astronomy and Astrophysics. 427: 933–936. doi:10.1051/0004-6361:20041449.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ a b Pasinetti Fracassini, L. E.; Pastori, L.; Covino, S.; Pozzi, A. (2001). "Catalogue of Apparent Diameters and Absolute Radii of Stars (CADARS) - Third edition - Comments and statistics". Astronomy and Astrophysics. 367: 521–524. doi:10.1051/0004-6361:20000451.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ a b Luck, R. Earle; Heiter, Ulrike (2006). "Dwarfs in the Local Region". The Astronomical Journal. 131: 3069–3092. doi:10.1086/504080.
{{cite journal}}: CS1 maint: multiple names: authors list (link) - ^ a b c Beichman, C. A.; et al. "New Debris Disks Around Nearby Main-Sequence Stars: Impact on the Direct Detection of Planets". The Astrophysical Journal. 652 (2): 1674–1693. doi:10.1086/508449.
{{cite journal}}: Explicit use of et al. in:|author=(help)
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