HD 164604 information

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

^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference Gray_et_al_2006 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d 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.
^ ^a ^b ^c ^d Cite error: The named reference Feng_et_al_2019 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Pace2013 was invoked but never defined (see the help page).
^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
^ Cite error: The named reference NameExoWorlds was invoked but never defined (see the help page).
^ Cite error: The named reference IAU1912 was invoked but never defined (see the help page).
^ Cite error: The named reference Mugrauer_Ginski_2015 was invoked but never defined (see the help page).
^ Cite error: The named reference Arriagada2010 was invoked but never defined (see the help page).
^ Cite error: The named reference Gontcharov was invoked but never defined (see the help page).

[GaiaDR2-1] ^ ^a ^b ^c ^d ^e ^f ^g Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).

[Anderson_Francis_2012-2] ^ ^a ^b ^c ^d ^e ^f ^g ^h ⁱ Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).

[Gray_et_al_2006-3] Cite error: The named reference Gray_et_al_2006 was invoked but never defined (see the help page).

[GaiaDR3-4] 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.

[Feng_et_al_2019-5] Cite error: The named reference Feng_et_al_2019 was invoked but never defined (see the help page).

[Pace2013-6] Cite error: The named reference Pace2013 was invoked but never defined (see the help page).

[SIMBAD-7] Cite error: The named reference SIMBAD was invoked but never defined (see the help page).

[NameExoWorlds-8] Cite error: The named reference NameExoWorlds was invoked but never defined (see the help page).

[IAU1912-9] Cite error: The named reference IAU1912 was invoked but never defined (see the help page).

[Mugrauer_Ginski_2015-10] Cite error: The named reference Mugrauer_Ginski_2015 was invoked but never defined (see the help page).

[Arriagada2010-11] Cite error: The named reference Arriagada2010 was invoked but never defined (see the help page).

[Gontcharov-12] Cite error: The named reference Gontcharov was invoked but never defined (see the help page).

Observation data Epoch J2000 Equinox J2000
Constellation	Sagittarius
Right ascension	18^h 03^m 06.93314^s^[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 (R_v)	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 (M_V)	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

HD 164604 information

and 30 Related for: HD 164604 information

HD 164604

HD 164604 b

List of proper names of stars

Pincoya

Caleuche

List of proper names of exoplanets

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List of stars in Sagittarius

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List of exoplanets detected by radial velocity

Iota Sagittarii

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HD 175167 b

List of exoplanets discovered in 2010

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Kappa Sagittarii