HD 164604

HD 164604 is a K dwarf star in the Sagittarius constellation.

HD 164604
Observation data
Epoch J2000      Equinox J2000
Constellation Sagittarius
Right ascension 18h 03m 06.933s[1]
Declination –28° 33 38.32[1]
Apparent magnitude (V) 9.83[2]
Characteristics
Spectral type K3.5Vk:
Apparent magnitude (B) 10.88[2]
Apparent magnitude (J) 7.784[3]
Apparent magnitude (H) 7.306[3]
Apparent magnitude (K) 7.169[3]
B−V color index 0.8
Astrometry
Radial velocity (Rv)+6.30 ± 0.6[4] km/s
Proper motion (μ) RA: -32.33[1] mas/yr
Dec.: -39.10[1] mas/yr
Parallax (π)24.35 ± 1.76[1] mas
Distance134 ± 10 ly
(41 ± 3 pc)
Absolute magnitude (MV)7.1
Details
Mass0.80 M
Metallicity-0.18
Other designations
CD–28° 14058, HIP 88414, PPM 267742, SAO 186165[5]
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia
data

The survey in 2015 have ruled out the existence of any additional stellar companions at projected distances from 13 to 340 astronomical units.[6]

The star HD 164604 is named Pincoya. The name was selected in the NameExoWorlds campaign by Chile, during the 100th anniversary of the IAU. Pincoya is a female water spirit from southern Chilean mythology who is said to bring drowned sailors to the Caleuche so that they can live in the afterlife.[7][8]

Planetary system

A single gas giant planet was detected by the Magellan Planet Search Program in 2010.

The HD 164604 planetary system[9]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥2.7 ± 1.3 MJ 1.3 ± 0.05 606.4 ± 9.0 0.24 ± 0.14

See also

References

  1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. S2CID 18759600.Vizier catalog entry
  2. Høg, E.; et al. (2000). "The Tycho-2 catalogue of the 2.5 million brightest stars". Astronomy and Astrophysics. 355: L27–L30. Bibcode:2000A&A...355L..27H.
  3. Cutri, R. M.; et al. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. Bibcode:2003yCat.2246....0C.
  4. Gontcharov, G. A. (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.
  5. "HD 164604". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 5 February 2018.
  6. Mugrauer, M.; Ginski, C. (12 May 2015). "High-contrast imaging search for stellar and substellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 450 (3): 3127–3136. doi:10.1093/mnras/stv771. Retrieved 19 June 2020.
  7. "Approved names". NameExoworlds. Retrieved 2020-01-02.
  8. "Name Exo Worlds". www.iau.org. International Astronomical Union | IAU. Retrieved 2020-01-02.
  9. Arriagada, Pamela; et al. (2010). "Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program". The Astrophysical Journal. 711 (2): 1229–35. arXiv:1001.4093. Bibcode:2010ApJ...711.1229A. doi:10.1088/0004-637X/711/2/1229. S2CID 118682009.

This article is issued from Wikipedia. The text is licensed under Creative Commons - Attribution - Sharealike. Additional terms may apply for the media files.