HD 208177

HD 208177
Observation data
Epoch J2000      Equinox ICRS
Constellation Aquarius
HD 208177
Right ascension 21h 54m 35.915s
Declination −03° 18′ 04.58″
Apparent magnitude (V) 6.20
companion
Right ascension 21h 54m 45.312s
Declination −03° 18′ 34.35″
Apparent magnitude (V) 15.16
Characteristics
HD 208177
Evolutionary stage main sequence
Spectral type F6/7V
U−B color index 0.07
B−V color index 0.48
companion
Evolutionary stage main sequence
Spectral type M3.5V
Astrometry
HD 208177
Radial velocity (Rv)−20 km/s
Proper motion (μ) RA: +26.272 mas/yr
Dec.: −33.683 mas/yr
Parallax (π)13.7652±0.0717 mas
Distance237 ± 1 ly
(72.6 ± 0.4 pc)
Absolute magnitude (MV)+2.05
companion
Radial velocity (Rv)−14.33±2.85 km/s
Proper motion (μ) RA: +27.675 mas/yr
Dec.: −33.708 mas/yr
Parallax (π)13.7048±0.0269 mas
Distance238.0 ± 0.5 ly
(73.0 ± 0.1 pc)
Details
HD 208177
Mass1.63 M☉
Radius2.87 R☉
Luminosity14 L☉
Surface gravity (log g)3.66 cgs
Temperature6,577 K
Metallicity [Fe/H]0.30 dex
Rotational velocity (v sin i)80 km/s
Age1.70 Gyr
companion
Mass0.32 M☉
Radius0.40 R☉
Luminosity0.018 L☉
Surface gravity (log g)4.83 cgs
Temperature3,341 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. The pair have an angular separation of 144″ and the companion is of 15th magnitude.

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

References

  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.