Astronomy:HD 130917
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Short description: White-hued main sequence star in the constellation Boötes
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Boötes[1] |
| Right ascension | 14h 49m 58.39852s[2] |
| Declination | +28° 36′ 56.9932″[2] |
| Apparent magnitude (V) | 5.80[3] |
| Characteristics | |
| Evolutionary stage | main sequence[4][2] |
| Spectral type | A4V[5] |
| U−B color index | 0.08[6] |
| B−V color index | 0.05[6] |
| Astrometry | |
| Radial velocity (Rv) | +1.4±4.3[3] km/s |
| Proper motion (μ) | RA: +18.286[2] mas/yr Dec.: −0.634[2] mas/yr |
| Parallax (π) | 9.7343 ± 0.0386[2] mas |
| Distance | 335 ± 1 ly (102.7 ± 0.4 pc) |
| Absolute magnitude (MV) | +0.84[1] |
| Details | |
| Mass | 2.2[7] M☉ |
| Radius | 3.0[7] R☉ |
| Luminosity | 43[7] L☉ |
| Surface gravity (log g) | 3.83[7] cgs |
| Temperature | 8,610[7] K |
| Rotational velocity (v sin i) | 222[4] km/s |
| Age | 454[2] Myr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 130917 is a single star[9] in the northern constellation of Boötes. It is an A-type main sequence star with a stellar classification of A4V.[3] At an apparent magnitude of 5.80,[3] it is visible to the naked eye under very dark skies.
HD 130917 is over twice as massive as the Sun and hotter at 8,610 K.[7] At an age of 454 million years,[2] it is still on the main sequence[4] but has expanded somewhat to three times the radius of the Sun and is now 43 times more luminous than the Sun.[7]
References
- ↑ 1.0 1.1 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 3.3 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.
- ↑ 4.0 4.1 4.2 Zorec, J.; Royer, F. (2012). "Rotational velocities of A-type stars. IV. Evolution of rotational velocities". Astronomy and Astrophysics 537: A120. doi:10.1051/0004-6361/201117691. Bibcode: 2012A&A...537A.120Z.
- ↑ Cowley, A. et al. (April 1969). "A study of the bright A stars. I. A catalogue of spectral classifications". Astronomical Journal 74: 375–406. doi:10.1086/110819. Bibcode: 1969AJ.....74..375C.
- ↑ 6.0 6.1 Osawa, Kiyoteru (July 1959). "Spectral Classification of 533 B8-A2 Stars and the Mean Absolute Magnitude of a0 V Stars". Astrophysical Journal 130: 159. doi:10.1086/146706. Bibcode: 1959ApJ...130..159O.
- ↑ 7.0 7.1 7.2 7.3 7.4 7.5 7.6 Stassun, Keivan G. et al. (2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal 158 (4): 138. doi:10.3847/1538-3881/ab3467. Bibcode: 2019AJ....158..138S.
- ↑ "HD 130917". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+130917.
- ↑ 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.
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