HD 166066

Last updated
HD 166066
Observation data
Epoch J2000.0        Equinox J2000.0 (ICRS)
Constellation Octans
Right ascension 18h 38m 51.0741s [1]
Declination −85° 42′ 32.2260″ [1]
Apparent magnitude  (V)8.10±0.01 [2]
Characteristics
Spectral type G0 V [3]
B−V color index +0.59 [2]
Astrometry
Radial velocity (Rv)2.93±2.55 [4]  km/s
Proper motion (μ)RA: +147.318  mas/yr [1]
Dec.: −43.097  mas/yr [1]
Parallax (π)14.5962 ± 0.1186  mas [1]
Distance 223 ± 2  ly
(68.5 ± 0.6  pc)
Absolute magnitude  (MV)4.09 [5]
Details
Mass 1.13 [6]   M☉
Radius 1.39+0.07
−0.05 [7]   R☉
Luminosity 2.12 [5]   L☉
Surface gravity (log g)4.25 [6]   cgs
Temperature 6,054±80 [6]   K
Metallicity [Fe/H]−0.03 [6]   dex
Rotational velocity (v sin i)5 [8]  km/s
Age 7.0+2.5
−1.2 [9]   Gyr
Other designations
CD−85°150, CPD−85°478, HD  166066, HIP  91434, GSC  09527-01174 [10]
Database references
SIMBAD data

HD 166066 is a solitary star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 8.10, [2] making it readily visible in binoculars, but not to the naked eye. The object is located 223 light years away from the Solar System, [1] but is drifting away with a poorly constrained radial velocity of about 2.93  km/s . [4]

HD 166066 has a stellar classification of G0 V, indicating that it is a G-type main sequence star similar to the Sun. [3] However, the calcium H & K lines are narrow and weak for its class. [3] It has 113% the mass of the Sun [6] and 139% its radius, along with twice its luminosity. [5] [7]

The iron abundance is 93% that of the Sun, and is slightly hotter, with an effective temperature of 6,054 K [6] compared to the Sun's 5,778 K. HD 166066 is significantly older, with an age of 7 billion years, [9] and rotates modestly with a projected rotational velocity of 5  km/s . [8]

Related Research Articles

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HD 88218 is a binary star in the southern constellation Antlia. The system has a combined apparent magnitude of 6.14, making it faintly visible to the naked eye. HD 88218 is relatively close at a distance of 103 light years but is receding with a heliocentric radial velocity of 36.7 km/s.

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HD 31975 is a star situated in the southern circumpolar constellation Mensa. It has an apparent magnitude of 6.28, which is near the threshold of naked eye visibility. It is relatively close at a distance of about 106 light years but is receding with a heliocentric radial velocity of 26.9 km/s.

HD 39194 is a star located in the southern circumpolar constellation Mensa. It has an apparent magnitude of 8.07, making it readily visible in binoculars but not to the naked eye. The object is relatively close at a distance of 86 light years but is receding with a heliocentric radial velocity of 13.9 km/s.

Mu1 Octantis, Latinized from μ1 Octantis, is a solitary star in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.98, allowing it to be faintly visible to the naked eye under ideal conditions. Located 335 light years away, it is approaching the Sun with a heliocentric radial velocity of −36 km/s.

HD 10800, also known as HR 512 or Gliese 67.1, is a triple star located in the southern circumpolar constellation Octans. It has a combined apparent magnitude of 5.87, allowing it to be faintly seen with the naked eye. The system is relatively close at a distance of 88.1 light years but is drifting closer with a heliocentric radial velocity −1.1 km/s.

HD 208741, also known as HR 8380, is a yellowish-white hued star located in the southern circumpolar constellation Octans. It has an apparent magnitude of 5.91, making it faintly visible to the naked eye. Parallax measurements place it at a distance of 211 light years, and it is currently receding with a heliocentric radial velocity of 8 km/s.

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<span class="mw-page-title-main">HD 201772</span> Star in the constellation Microscopium

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<span class="mw-page-title-main">HD 192886</span> High proper motion star; F-type dwarf

HD 192886, also known as HR 7749 or rarely 84 G. Telescopii, is a solitary, yellowish-white hued star located in the southern constellation Telescopium. It has an apparent magnitude of 6.13, making it barely visible to the naked eye, even in ideal conditions. The object is located relatively close at a distance of only 103 light years but is drifting closer with a heliocentric radial velocity of −29.6 km/s. At its current distance, HD 192886's brightness is diminished by 0.13 magnitudes due to extinction from interstellar dust. It has an absolute magnitude of +3.69.

References

  1. 1 2 3 4 5 6 Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics . 649: A1. arXiv: 2012.01533 . Bibcode:2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657 . S2CID   227254300. (Erratum:  doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  2. 1 2 3 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. 1 2 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_ƒ0. Bibcode:1975mcts.book.....H.
  4. 1 2 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.
  5. 1 2 3 Anderson, E.; Francis, Ch. (May 2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331–346. arXiv: 1108.4971 . Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. ISSN   1063-7737. S2CID   255204555.
  6. 1 2 3 4 5 6 Casagrande, L.; Schönrich, R.; Asplund, M.; Cassisi, S.; Ramírez, I.; Meléndez, J.; Bensby, T.; Feltzing, S. (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 & Astrophysics. 530: A138. arXiv: 1103.4651 . Bibcode:2011A&A...530A.138C. doi: 10.1051/0004-6361/201016276 . ISSN   0004-6361.
  7. 1 2 Stassun, Keivan G.; et al. (9 September 2019). "The Revised TESS Input Catalog and Candidate Target List". The Astronomical Journal. 158 (4): 138. arXiv: 1905.10694 . Bibcode:2019AJ....158..138S. doi: 10.3847/1538-3881/ab3467 . ISSN   0004-6256.
  8. 1 2 Nordström, B.; Mayor, M.; Andersen, J.; Holmberg, J.; Pont, F.; Jørgensen, B. R.; Olsen, E. H.; Udry, S.; Mowlavi, N. (May 2004). "The Geneva-Copenhagen survey of the Solar neighbourhood: Ages, metallicities, and kinematic properties of ~14 000 F and G dwarfs". Astronomy & Astrophysics. 418 (3): 989–1019. arXiv: astro-ph/0405198 . Bibcode:2004A&A...418..989N. doi: 10.1051/0004-6361:20035959 . ISSN   0004-6361.
  9. 1 2 Holmberg, J.; Nordström, B.; Andersen, J. (July 2009). "The Geneva-Copenhagen survey of the solar neighbourhood: III. Improved distances, ages, and kinematics". Astronomy & Astrophysics. 501 (3): 941–947. arXiv: 0811.3982 . Bibcode:2009A&A...501..941H. doi: 10.1051/0004-6361/200811191 . ISSN   0004-6361.
  10. ↑ "HD 166066". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved June 25, 2022.
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