Astronomy:HD 135438
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Short description: Star in the constellation Boötes
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Boötes |
| Right ascension | 15h 14m 06.04269s[1] |
| Declination | +31° 47′ 16.2454″[1] |
| Apparent magnitude (V) | 5.97[2] |
| Characteristics | |
| Spectral type | K5III[3] |
| B−V color index | 1.52[4] |
| Astrometry | |
| Radial velocity (Rv) | +4[5] km/s |
| Proper motion (μ) | RA: +41.485[1] mas/yr Dec.: −28.200[1] mas/yr |
| Parallax (π) | 5.0111 ± 0.1026[1] mas |
| Distance | 650 ± 10 ly (200 ± 4 pc) |
| Absolute magnitude (MV) | −0.33[6] |
| Details | |
| Mass | 1.2[7] M☉ |
| Radius | 37.6[1] R☉ |
| Luminosity | 734[1] L☉ |
| Surface gravity (log g) | 1.73[1] cgs |
| Temperature | 3,960[1] K |
| Metallicity [Fe/H] | +0.15[7] dex |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 135438 is a K-type giant star in the northern constellation of Boötes. With an apparent magnitude of 6.0, it lies about 650 light years away.
HD 135438 has a magnitude 9.36 companion at an angular separation of 118.2″ along a position angle of 158° (as of 2012).[8] Gaia Data Release 3 parallaxes indicate that the visual companion is an unrelated background star.[9]
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 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.
- ↑ Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P. et al. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics 355: L27–L30. ISSN 0004-6361. Bibcode: 2000A&A...355L..27H.
- ↑ Pickles, A.; Depagne, É. (2010). "All-Sky Spectrally Matched UBVRI - ZY and u‧ g‧ r‧ i‧ z‧ Magnitudes for Stars in the Tycho2 Catalog". Publications of the Astronomical Society of the Pacific 122 (898): 1437. doi:10.1086/657947. Bibcode: 2010PASP..122.1437P.
- ↑ Percy, John R. (December 1993), "The photometric variability of K giants", Publications of the Astronomical Society of the Pacific 105 (694): 1422–1426, doi:10.1086/133324, Bibcode: 1993PASP..105.1422P.
- ↑ 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.
- ↑ Gontcharov, G. A. (2017). "VizieR Online Data Catalog: Tycho-2 red giant branch and carbon stars (Gontcharov, 2011)". VizieR On-Line Data Catalog. Bibcode: 2017yCat..90370769G.
- ↑ 7.0 7.1 Anders, F. et al. (August 2019). "Photo-astrometric distances, extinctions, and astrophysical parameters for Gaia DR2 stars brighter than G = 18". Astronomy & Astrophysics 628: A94. doi:10.1051/0004-6361/201935765. ISSN 0004-6361. Bibcode: 2019A&A...628A..94A.
- ↑ Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466–3471, doi:10.1086/323920, Bibcode: 2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22.
- ↑ 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.
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