HD 135438
Observation data
Epoch J2000      Equinox J2000
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 mas[1]
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. ^ a b c d e f g h i Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. 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.; Wicenec, A. (March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H. ISSN 0004-6361.
  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. arXiv:1011.2020. Bibcode:2010PASP..122.1437P. doi:10.1086/657947. S2CID 54678796.
  4. ^ Percy, John R. (December 1993), "The photometric variability of K giants", Publications of the Astronomical Society of the Pacific, 105 (694): 1422–1426, Bibcode:1993PASP..105.1422P, doi:10.1086/133324.
  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, arXiv:1606.08053, Bibcode:2006AstL...32..759G, doi:10.1134/S1063773706110065, S2CID 119231169.
  6. ^ 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. ^ a b 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. arXiv:1904.11302. Bibcode:2019A&A...628A..94A. doi:10.1051/0004-6361/201935765. ISSN 0004-6361.
  8. ^ Mason, B. D.; et al. (2014), "The Washington Visual Double Star Catalog", The Astronomical Journal, 122 (6): 3466–3471, Bibcode:2001AJ....122.3466M, doi:10.1086/323920, retrieved 2015-07-22.
  9. ^ Vallenari, A.; et al. (Gaia collaboration) (2023). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy and Astrophysics. 674: A1. arXiv:2208.00211. Bibcode:2023A&A...674A...1G. doi:10.1051/0004-6361/202243940. S2CID 244398875. Gaia DR3 record for this source at VizieR.

External links

Constellation of Boötes
Categories