HD 126009

HD 126009
	; The visual band light curve of HD 126009, plotted from data presented by Tabur et al. (2009)
Observation data; Epoch J2000 Equinox J2000
Constellation	Boötes
Right ascension	14h 22m 14.00070s
Declination	+29° 22′ 11.7179″
Apparent magnitude (V)	6.6
Characteristics
Spectral type	M3III
U−B color index	+1.46
B−V color index	+1.60
Variable type	Irregular
Astrometry
Radial velocity (Rv)	−19.66±0.54 km/s
Proper motion (μ)	RA: −39.980 mas/yr ; Dec.: −26.201 mas/yr
Parallax (π)	4.5229 ± 0.0973 mas
Distance	720 ± 20 ly ; (221 ± 5 pc)
Absolute magnitude (MV)	−0.268
Details
Mass	1.8 M☉
Radius	71 R☉
Luminosity	943 L☉
Temperature	3,227 K
Age	1.6 Gyr
Other designations
	CI Boötes, BD+30°2513, HD126009, HIP 70236, SAO 83312.
Database references
SIMBAD	data

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

References[edit]

^ 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.
^ ^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.
^ ^a ^b ^c Mermilliod, J.-C. (1986), "Compilation of Eggen's UBV data, transformed to UBV (unpublished)", Catalogue of Eggen's UBV Data. SIMBAD, Bibcode:1986EgUBV........0M
^ ^a ^b 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
^ 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.
^ 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.
^ 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.
^ 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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[Tabur-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.

[dr3-2] ^ ^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.

[MERMILLIOD-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

[tabur-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

[aaa374_968-5] 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.

[Famaey2009-6] 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.

[gontcharov2011-7] 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.

[pastel-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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Observation data Epoch J2000 Equinox J2000
The visual band light curve of HD 126009, plotted from data presented by Tabur et al. (2009)^[1]
Constellation	Boötes
Right ascension	14^h 22^m 14.00070^s^[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 (R_v)	−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]
Distance	720 ± 20 ly (221 ± 5 pc)
Absolute magnitude (M_V)	−0.268^[7]

Details

Mass	1.8^[2] `M`_☉
Radius	71^[2] `R`_☉
Luminosity	943^[2] `L`_☉
Temperature	3,227^[8] K
Age	1.6^[2] Gyr

Other designations
CI Boötes, BD+30°2513, HD126009, HIP 70236, SAO 83312.
Database references
SIMBAD	data