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HD 208177

From Wikipedia, the free encyclopedia
HD 208177
Observation data
Epoch J2000      Equinox ICRS
Constellation Aquarius[1]
HD 208177
Right ascension 21h 54m 35.915s[2]
Declination −03° 18′ 04.58″[2]
Apparent magnitude (V) 6.20[3]
companion
Right ascension 21h 54m 45.312s[4]
Declination −03° 18′ 34.35″[4]
Apparent magnitude (V) 15.16[5]
Characteristics
HD 208177
Evolutionary stage main sequence[2]
Spectral type F6/7V[6]
U−B color index 0.07[3]
B−V color index 0.48[3]
companion
Evolutionary stage main sequence[7]
Spectral type M3.5V[7]
Astrometry
HD 208177
Radial velocity (Rv)−20[8] km/s
Proper motion (μ) RA: +26.272[2] mas/yr
Dec.: −33.683[2] mas/yr
Parallax (π)13.7652±0.0717 mas[2]
Distance237 ± 1 ly
(72.6 ± 0.4 pc)
Absolute magnitude (MV)+2.05[1]
companion
Radial velocity (Rv)−14.33±2.85[4] km/s
Proper motion (μ) RA: +27.675[4] mas/yr
Dec.: −33.708[4] mas/yr
Parallax (π)13.7048±0.0269 mas[4]
Distance238.0 ± 0.5 ly
(73.0 ± 0.1 pc)
Details
HD 208177
Mass1.63[9] M☉
Radius2.87[10] R☉
Luminosity14[10] L☉
Surface gravity (log g)3.66[10] cgs
Temperature6,577[10] K
Metallicity [Fe/H]0.30[11] dex
Rotational velocity (v sin i)80[12] km/s
Age1.70[11] Gyr
companion
Mass0.32[9] M☉
Radius0.40[10] R☉
Luminosity0.018[10] L☉
Surface gravity (log g)4.83[10] cgs
Temperature3,341[10] K
Other designations
BD−03°5329, HD 208177, HIP 108144, HR 8363, SAO 145735
companion: Gaia DR3 2670423305295264256
Database references
SIMBADdata
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 208177 is a binary star system in the equatorial constellation of Aquarius. They are faintly visible to the naked eye with an apparent magnitude of 6.20.[3] The pair have an angular separation of 144″ and the companion is of 15th magnitude.[9]

The primary component is a main-sequence star with a stellar classification of F6/7V.[6] It has an estimated 163%[9] of the Sun's mass and is about 1.7 billion years old[11] The companion is only 0.32 M☉.[9]

References

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  1. 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. arXiv:1108.4971. Bibcode:2012AstL...38..331A. doi:10.1134/S1063773712050015. XHIP record for this object at VizieR.
  2. 1 2 3 4 5 6 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. 1 2 3 4 Nicolet, B. (1978). "Photoelectric photometric Catalogue of homogeneous measurements in the UBV System". Astronomy and Astrophysics Supplement Series. 34: 1–49. Bibcode:1978A&AS...34....1N.
  4. 1 2 3 4 5 6 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.
  5. ↑ Suissa, Gabrielle; Mandell, Avi M.; Wolf, Eric T.; Villanueva, Geronimo L.; Fauchez, Thomas; Kopparapu, Ravi Kumar (2020). "Dim Prospects for Transmission Spectra of Ocean Earths around M Stars". The Astrophysical Journal. 891 (1): 58. arXiv:1912.08235. Bibcode:2020ApJ...891...58S. doi:10.3847/1538-4357/ab72f9.
  6. 1 2 Houk, N.; Swift, C. (1999). "Michigan catalogue of two-dimensional spectral types for the HD Stars, Vol. 5". Michigan Spectral Survey. 5. Bibcode:1999MSS...C05....0H.
  7. 1 2 Montes, D.; González-Peinado, R.; Tabernero, H. M.; Caballero, J. A.; Marfil, E.; Alonso-Floriano, F. J.; Cortés-Contreras, M.; González Hernández, J. I.; Klutsch, A.; Moreno-Jódar, C. (2018). "Calibrating the metallicity of M dwarfs in wide physical binaries with F-, G-, and K-primaries - I: High-resolution spectroscopy with HERMES: Stellar parameters, abundances, and kinematics". Monthly Notices of the Royal Astronomical Society. 479 (1): 1332. arXiv:1805.05394. Bibcode:2018MNRAS.479.1332M. doi:10.1093/mnras/sty1295.
  8. ↑ 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.
  9. 1 2 3 4 5 Tokovinin, Andrei (April 2014). "From Binaries to Multiples. II. Hierarchical Multiplicity of F and G Dwarfs". The Astronomical Journal. 147 (4): 14. arXiv:1401.6827. Bibcode:2014AJ....147...87T. doi:10.1088/0004-6256/147/4/87. S2CID 56066740. 87.
  10. 1 2 3 4 5 6 7 8 Stassun, Keivan G.; et al. (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.
  11. 1 2 3 Casagrande, L.; et al. (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): 21. arXiv:1103.4651. Bibcode:2011A&A...530A.138C. doi:10.1051/0004-6361/201016276. S2CID 56118016.
  12. ↑ Głȩbocki, R.; Gnaciński, P. (2005). "Systematic errors in the determination of stellar rotational velocities". 13th Cambridge Workshop on Cool Stars. 560: 571. Bibcode:2005ESASP.560..571G.
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