HD 166066

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HD 166066
Observation data
Epoch J2000      Equinox J2000
Constellation Octans
Right ascension 18h 38m 51.07s[1]
Declination −85° 42′ 32.24″[1]
Apparent magnitude (V) 8.10±0.01[2]
Characteristics
Spectral type G0V[3]
B−V color index +0.59[2]
Astrometry
Radial velocity (Rv)2.93±2.55[1] km/s
Proper motion (μ) RA: +147.495±0.214[1] mas/yr
Dec.: −42.057±0.258[1] mas/yr
Parallax (π)14.2561 ± 0.1373[1] mas
Distance229 ± 2 ly
(70.1 ± 0.7 pc)
Absolute magnitude (MV)+4.09[4]
Details
Mass1.13+0.17
−0.14[5] M☉
Radius1.44+0.16
−0.03[1] R☉
Luminosity2.37±0.03[1] L☉
Surface gravity (log g)4.20+0.09
−0.06[5] cgs
Temperature5962+73
−299[1] K
Metallicity [Fe/H]−0.04+0.13
−0.14[6] dex
Rotational velocity (v sin i)5[7] km/s
Age4.89[8] Gyr
Other designations
CD−85 150, HD 166066, HIP 91434, GSC 09527-01174
Database references
SIMBADdata

HD 166066 is a solitary star located in the southern circumpolar constellation Octans. With an apparent magnitude of 8.1, it's only visible with binoculars. The star is located 229 light-years (70 parsecs) from the Solar System, but is drifting away with a radial velocity of +2.93 km/s.

Properties[]

HD 166066 is a G-type main sequence star similar to our Sun, but is 13% more massive, and 44% larger. It's metal abundance is 91% that of the Sun, and is hotter than it, with an effective temperature of 5,962 K compared to the Sun's 5,778 K. HD 166066 is slightly older, with an age of 4.89 billion years, and rotates slowly with a velocity of 5 km/s. However, it's more luminous than the sun, with a luminosity 2.37 times greater.

References[]

  1. ^ a b c d e f g h Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b Høg, E.; Fabricius, C.; Makarov, V. V.; Urban, S.; Corbin, T.; Wycoff, G.; Bastian, U.; Schwekendiek, P.; Wicenec, A. (1 March 2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. ISSN 0004-6361.
  3. ^ Houk, N.; Cowley, A. P. (1975). "University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_f0". University of Michigan Catalogue of two-dimensional spectral types for the HD stars. Volume I. Declinations -90_ to -53_f0., by Houk, N.; Cowley, A. P.. Ann Arbor, MI (USA): Department of Astronomy, University of Michigan, 19 + 452 p.
  4. ^ Anderson, E.; Francis, Ch. (1 May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38: 331–346. arXiv:1108.4971. doi:10.1134/S1063773712050015. ISSN 1063-7737.
  5. ^ a b Stassun, Keivan G.; Oelkers, Ryan J.; Paegert, Martin; Torres, Guillermo; Pepper, Joshua; De Lee, Nathan; Collins, Kevin; Latham, David W.; Muirhead, Philip S.; Chittidi, Jay; Rojas-Ayala, Bárbara; Fleming, Scott W.; Rose, Mark E.; Tenenbaum, Peter; Ting, Eric B.; Kane, Stephen R.; Barclay, Thomas; Bean, Jacob L.; Brassuer, C. E.; Charbonneau, David; Ge, Jian; Lissauer, Jack J.; Mann, Andrew W.; McLean, Brian; Mullally, Susan; Narita, Norio; Plavchan, Peter; Ricker, George R.; Sasselov, Dimitar; Seager, S.; Sharma, Sanjib; Shiao, Bernie; Sozzetti, Alessandro; Stello, Dennis; Vanderspek, Roland; Wallace, Geoff; Winn, Joshua N. (1 October 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158: 138. doi:10.3847/1538-3881/ab3467. hdl:1721.1/124721. ISSN 0004-6256.
  6. ^ Ammons, S. Mark; Robinson, Sarah E.; Strader, Jay; Laughlin, Gregory; Fischer, Debra; Wolf, Aaron (1 February 2006). "The N2K Consortium. IV. New Temperatures and Metallicities for More than 100,000 FGK Dwarfs". The Astrophysical Journal. 638: 1004–1017. doi:10.1086/498490. ISSN 0004-637X.
  7. ^ Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (1 May 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs". Astronomy and Astrophysics. 418: 989–1019. doi:10.1051/0004-6361:20035959. ISSN 0004-6361.
  8. ^ Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (1 June 2011). "New constraints on the chemical evolution of the solar neighbourhood and Galactic disc(s). Improved astrophysical parameters for the Geneva-Copenhagen Survey". Astronomy and Astrophysics. 530: A138. arXiv:1103.4651. doi:10.1051/0004-6361/201016276. ISSN 0004-6361.
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