HD 126009

HD 126009 or CI Boötis is a variable star[4] in the northern constellation of Boötes.

HD 126009

The visual band light curve of HD 126009, plotted from data presented by Tabur et al. (2009)[1]
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 22m 14.00070s[2]
Declination +29° 22′ 11.7179″[2]
Apparent magnitude (V) 6.6[3]
Characteristics
Spectral type M3III[4]
U−B color index +1.46[3]
B−V color index +1.60[3]
Variable type Irregular[5]
Astrometry
Radial velocity (Rv)−19.66±0.54[6] km/s
Proper motion (μ) RA: −39.980[2] mas/yr
Dec.: −26.201[2] mas/yr
Parallax (π)4.5229 ± 0.0973 mas[2]
Distance720 ± 20 ly
(221 ± 5 pc)
Absolute magnitude (MV)−0.268[7]
Details
Mass1.8[2] M☉
Radius71[2] R☉
Luminosity943[2] L☉
Temperature3,227[8] K
Age1.6[2] Gyr
Other designations
CI Boötes, BD+30°2513, HD126009, HIP 70236, SAO 83312.
Database references
SIMBADdata

References
  1. Tabur, V.; Bedding, T. R.; Kiss, L. L.; Moon, T. T.; Szeidl, B.; Kjeldsen, H. (December 2009). "Long-term photometry and periods for 261 nearby pulsating M giants". Monthly Notices of the Royal Astronomical Society. 400 (4): 1945–1961. arXiv:0908.3228. Bibcode:2009MNRAS.400.1945T. doi:10.1111/j.1365-2966.2009.15588.x.
  2. 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.
  3. Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
  4. Tabur, V.; Bedding, T. R. (2009), "Long-term photometry and periods for 261 nearby pulsating M giants", Monthly Notices of the Royal Astronomical Society, 400 (4): 1945–61, arXiv:0908.3228, Bibcode:2009MNRAS.400.1945T, doi:10.1111/j.1365-2966.2009.15588.x, S2CID 15358380
  5. Mennessier, M. O.; et al. (August 2001), "Long period variable stars: galactic populations and infrared luminosity calibrations", Astronomy and Astrophysics, 374 (3): 968–979, arXiv:astro-ph/0105552, Bibcode:2001A&A...374..968M, doi:10.1051/0004-6361:20010764, S2CID 15721872.
  6. Famaey, B.; et al. (2009). "Spectroscopic binaries among Hipparcos M giants,. I. Data, orbits, and intrinsic variations". Astronomy and Astrophysics. 498 (2): 627–640. arXiv:0901.0934. Bibcode:2009A&A...498..627F. doi:10.1051/0004-6361/200810698. S2CID 18739721.
  7. 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.
  8. Soubiran, Caroline; Le Campion, Jean-François; Brouillet, Nathalie; Chemin, Laurent (2016). "The PASTEL catalogue: 2016 version". Astronomy & Astrophysics. 591: A118. arXiv:1605.07384. Bibcode:2016A&A...591A.118S. doi:10.1051/0004-6361/201628497. S2CID 119258214.


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