Astronomy:HD 135438

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Short description: Star in the constellation Boötes
HD 135438
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
Distance650 ± 10 ly
(200 ± 4 pc)
Absolute magnitude (MV)−0.33[6]
Details
Mass1.2[7] M
Radius37.6[1] R
Luminosity734[1] L
Surface gravity (log g)1.73[1] cgs
Temperature3,960[1] K
Metallicity [Fe/H]+0.15[7] dex
Other designations
BD+32°2561, HD 135438, HIP 74561, HR 5674, SAO 64574.
Database references
SIMBADdata

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. 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.
  2. 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. Bibcode2000A&A...355L..27H. 
  3. 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. Bibcode2010PASP..122.1437P. 
  4. 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, Bibcode1993PASP..105.1422P. 
  5. 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, Bibcode2006AstL...32..759G. 
  6. Gontcharov, G. A. (2017). "VizieR Online Data Catalog: Tycho-2 red giant branch and carbon stars (Gontcharov, 2011)". VizieR On-Line Data Catalog. Bibcode2017yCat..90370769G. 
  7. 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. Bibcode2019A&A...628A..94A. 
  8. Mason, B. D. et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal 122 (6): 3466–3471, doi:10.1086/323920, Bibcode2001AJ....122.3466M, http://vizier.u-strasbg.fr/viz-bin/VizieR?-source=B/wds, retrieved 2015-07-22. 
  9. 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.

External links