HD 195564

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HD 195564
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Capricornus
Right ascension 20h 32m 23.695s[1]
Declination −09° 51′ 12.18″[1]
Apparent magnitude (V) 5.65[2]
Characteristics
Spectral type G2 V[3]
U−B color index +0.20[2]
B−V color index +0.68[2]
Distance
80.68 ± 0.10 ly
(24.74 ± 0.03 pc)
Details
HD 195564 A
Gyr
HD 195564 B
Mass0.55[7] M☉
HR 7845, SAO 163665[8]
Database references
SIMBADdata
ARICNSdata

HD 195564 is the

common proper motion with the brighter primary component.[7]

Based upon the

K-type star.[9]

The secondary companion has an apparent magnitude of 11.30,

″ from the primary, along a position angle of 27°[10] The pair orbit each other with an estimated period of around 510 years.[7]

In a paper published in April 2017, a candidate planet was found orbiting HD 195564 with a period of 5,404 days (14.80 yr).[11]

The HD 195564 planetary system[11]
Companion
(in order from star) 		Mass Semimajor axis
(AU) 		Orbital period
(days) 		Eccentricity Inclination Radius
b (unconfirmed) — — 5403.77251±164.1426 — — —

References

  1. ^
    doi:10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR
    .
  2. ^
    Bibcode:1986EgUBV........0M
    .
  3. ^
    S2CID 119417105
    .
  4. S2CID 51814894
    .
  5. ^
    S2CID 14911430
    , 40. See Table 3.
  6. S2CID 43455849, archived from the original
    (PDF) on 2017-09-22, retrieved 2018-11-04.
  7. ^
    S2CID 56066740
    , 87.
  8. ^ "HD 195564". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved March 15, 2016.
  9. Commonwealth Scientific and Industrial Research Organisation, December 21, 2004, archived from the original
    on March 18, 2012, retrieved 2012-01-16.
  10. ^
    doi:10.1086/323920
    , retrieved 2015-07-22.
  11. ^
    S2CID 14954371. Planet candidate is in Table 2; full table available here
    .
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