HD 164604

Last updated
HD 164604 / Pincoya
Observation data
Epoch J2000        Equinox J2000
Constellation Sagittarius
Right ascension 18h 03m 06.93314s [1]
Declination –28° 33′ 38.3576″ [1]
Apparent magnitude  (V)9.62 [2]
Characteristics
Spectral type K3.5V(k) [3]
Apparent magnitude  (B)11.016 [2]
Apparent magnitude  (J)7.784±0.024 [2]
Apparent magnitude  (H)7.306±0.038 [2]
Apparent magnitude  (K)7.169±0.020 [2]
B−V color index 1.396±0.491 [2]
Astrometry
Radial velocity (Rv)7.30±0.16 [4]  km/s
Proper motion (μ)RA: −34.658±0.036 [4]   mas/yr
Dec.: −42.253±0.025 [4]   mas/yr
Parallax (π)24.9867 ± 0.0351  mas [4]
Distance 130.5 ± 0.2  ly
(40.02 ± 0.06  pc)
Absolute magnitude  (MV)6.57 [2]
Details
Mass 0.77±0.04 [5]   M☉
Radius 0.77+0.01
−0.04 [1]   R☉
Luminosity 0.258±0.001 [1]   L☉
Surface gravity (log g)4.41 [3]   cgs
Temperature 4,684+135
−37 [5]   K
Metallicity [Fe/H]0.09±0.08 [2]   dex
Age 7.24±4.72 [6]   Gyr
Other designations
CD–28° 14058, HD  164604, HIP  88414, SAO  186165, PPM  267742 [7]
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia 		data

HD 164604 is a single star in the southern constellation of Sagittarius constellation. It has the proper name Pincoya, as 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. [8] [9] A 2015 survey ruled out the existence of any additional stellar companions at projected distances from 13 to 340 astronomical units. [10] It is known to host a single super-Jupiter exoplanet. [11]

This star is invisible to the naked eye with an apparent visual magnitude of 9.62. [2] It is located at a distance of 128.5  light years from the Sun based on parallax, [1] and is drifting further away with a radial velocity of +6 km/s. [12] The stellar classification of HD 164604 is K3.5V(k), which indicates this is a K-type main-sequence star. The chromosphere is considered very inactive. [3] It is roughly seven [6] billion years old with 77% of the mass [5] and radius [1] of the Sun. The star is radiating 26% [1] of the luminosity of the Sun from its photosphere at an effective temperature of 4,684 K. [5]

Planetary system

A single super-Jupiter exoplanet was detected by the Magellan Planet Search Program in 2010 based on radial velocity variations of the host star. [11] The orbit of this body does not preclude a hypothetical Earth-mass exoplanet from occupying a dynamically stable orbit within the habitable zone of this star. [13] An astrometric measurement of the planet's inclination and true mass was published in 2022 as part of Gaia DR3. [14]

The HD 164604 planetary system [5] [14]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b / Caleuche 14.3±5.5  MJ 1.331 ± 0.0029641.47 ± 10.130.35 ± 0.129±19 ° —

Related Research Articles

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HD 196050 is a triple star system located in the southern constellation of Pavo. This system has an apparent magnitude of 7.50 and the absolute magnitude is 4.01. It is located at a distance of 165 light-years from the Sun based on parallax, and is drifting further away with a radial velocity of +61 km/s. It is also called by the Hipparcos designation HIP 101806.

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HD 179079 is a star with an exoplanetary companion in the equatorial constellation of Aquila. It has an apparent visual magnitude of approximately 7.96, making it too faint to be readily visible to the naked eye. The distance to this star can be determine using parallax measurements, which yields an estimate of approximately 228 light years. It is drifting further away with a radial velocity of +20 km/s.

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HD 63765 is a star with an orbiting exoplanet in the southern constellation of Carina. It is too faint to be visible with the naked eye, having an apparent visual magnitude of 8.10. The distance to this system is 106 light years based on parallax measurements, and it is drifting further away with a heliocentric radial velocity of 22 km/s.

HD 90156 is a star with an orbiting exoplanet in the constellation Hydra. Based on parallax measurements, it is located at a distance of 71.6 light years from the Sun. The system is drifting further away with a heliocentric radial velocity of 27 km/s. The apparent visual magnitude of this star is 6.92, which is places it near the lower limit of visibility to the naked eye. A survey in 2015 ruled out the existence of any stellar companions at projected distances above 5 AU.

Gliese 179 is a small red dwarf star with an exoplanetary companion in the equatorial constellation of Orion. It is much too faint to be visible to the naked eye with an apparent visual magnitude of 11.94. The system is located at a distance of 40.5 light-years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of –9 km/s. It is a high proper motion star, traversing the celestial sphere at an angular rate of 0.370″·yr−1.

HD 86226 is a star with a pair of orbiting exoplanet companions, found in the constellation of Hydra. With an apparent visual magnitude of 7.93, it is too dim to be visible with the naked eye. The distance to this system has been determined by the parallax method, yielding a range of 149 light years. It is receding with a heliocentric radial velocity of +19.6 km/s. A survey in 2015 has ruled out the existence of any stellar companions at projected distances above 12 astronomical units.

HD 175167 is a star with an exoplanet companion in the southern constellation of Pavo. It is too faint to be visible with the naked eye at an apparent visual magnitude of 8.01. The system is located at a distance of 232 light-years from the Sun based on parallax measurements, and it is drifting further away with a radial velocity of 5 km/s. It shows a high proper motion, traversing the celestial sphere at an angular rate of 0.190 arcsec yr−1.

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HD 79498 is a double star in the northern constellation of Cancer. The primary component of this pair has an orbiting exoplanet companion. This star is too faint to be viewed with the naked eye, having an apparent visual magnitude of 8.05. The system is located at a distance of 159 light years based on parallax measurements, and is drifting further away with a heliocentric radial velocity of 20 km/s. It has a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.2″·yr−1.

<span class="mw-page-title-main">HD 206610</span> Star in the Aquarius constellation

HD 206610, also known as Bosona, is a star with an orbiting exoplanet in the constellation of Aquarius. Based on parallax measurements, it is located at a distance of approximately 482 light years from the Sun. The absolute magnitude of this star is 1.99, but at that distance it is too faint to view with the naked eye, having an apparent visual magnitude of 8.34. The system is drifting closer with a radial velocity of −18.6 km/s.

References

  1. 1 2 3 4 5 6 7 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. 1 2 3 4 5 6 7 8 9 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. S2CID   119257644.
  3. 1 2 3 Gray, R. O.; et al. (July 2006). "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample". The Astronomical Journal . 132 (1): 161–170. arXiv: astro-ph/0603770 . Bibcode:2006AJ....132..161G. doi:10.1086/504637. S2CID   119476992.
  4. 1 2 3 4 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. 1 2 3 4 5 Feng, Fabo; et al. (June 2019). "Search for Nearby Earth Analogs. I. 15 Planet Candidates Found in PFS Data". The Astrophysical Journal Supplement Series. 242 (2): 31. arXiv: 1904.08567 . Bibcode:2019ApJS..242...25F. doi: 10.3847/1538-4365/ab1b16 . S2CID   121128472. 25.
  6. 1 2 Pace, G. (March 2013), "Chromospheric activity as age indicator. An L-shaped chromospheric-activity versus age diagram", Astronomy & Astrophysics, 551: 4, arXiv: 1301.5651 , Bibcode:2013A&A...551L...8P, doi:10.1051/0004-6361/201220364, S2CID   56420519, L8.
  7. ↑ "HD 164604". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 5 February 2018.
  8. ↑ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  9. ↑ "Name Exo Worlds". www.iau.org. International Astronomical Union | IAU. Retrieved 2020-01-02.
  10. ↑ 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. Bibcode:2015MNRAS.450.3127M. doi: 10.1093/mnras/stv771 . hdl: 1887/49340 . Retrieved 19 June 2020.
  11. 1 2 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.
  12. ↑ 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.
  13. ↑ Agnew, Matthew T.; et al. (November 2017). "Stable habitable zones of single Jovian planet systems". Monthly Notices of the Royal Astronomical Society. 471 (4): 4494–4507. arXiv: 1706.05805 . Bibcode:2017MNRAS.471.4494A. doi:10.1093/mnras/stx1449.
  14. 1 2 Gaia Collaboration; et al. (2023). "Gaia Data Release 3". Astronomy & Astrophysics. 674: A34. arXiv: 2206.05595 . doi:10.1051/0004-6361/202243782. S2CID   249626026.
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