HD 214448

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HD 214448
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 22h 38m 22.14533s[1]
Declination −07° 53′ 51.2116″[1]
Apparent magnitude (V) 6.23[2] (6.64/8.11)[3]
Characteristics
Spectral type K0III + F2[4]
U−B color index +0.49[2]
B−V color index +0.78[2]
Variable type Suspected[5]
Astrometry
Radial velocity (Rv) 18.34±0.27[6] km/s
Proper motion (μ) RA: +74.25[1] mas/yr
Dec.: −0.98[1] mas/yr
Parallax (π) 8.38 ± 0.62[1] mas
Distance 390 ± 30 ly
(119 ± 9 pc)
Absolute magnitude (MV) 0.498[6]
Orbit[5]
Period (P) 147.07±8.09 yr
Semi-major axis (a) 0.249±0.051"
Eccentricity (e) 0.44±0.37
Inclination (i) 73.6±6.2°
Longitude of the node (Ω) 110.3±3.3°
Argument of periastron (ω)
(secondary)
191.9±14.7°
Details
Temperature 5,645[7] K
Other designations
BD-08° 5912, HD 214448, HIP 111761, HR 8612, SAO 146216, WDS J22384-0754.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 214448 is a binary star system in the equatorial constellation of Aquarius. They orbit each other with a period of around 147 years. The combined mass of the pair is twice that of the Sun.[5]

References[edit]

  1. ^ a b c d e 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 
  2. ^ a b c 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 
  3. ^ Malkov, O. Yu. et al. (2012), "Dynamical Masses of a Selected Sample of Orbital Binaries", Astronomy & Astrophysics 546: 5, Bibcode:2012A&A...546A..69M, doi:10.1051/0004-6361/201219774, A69 
  4. ^ Abt, H. A. (September 1985), "Visual multiples. VIII - 1000 MK types", Astrophysical Journal Supplement Series 59: 95−112, Bibcode:1985ApJS...59...95A, doi:10.1086/191064 
  5. ^ a b c Olevic, D.; Cvetkovic, Z. (2004), "Orbits of 6 Binaries", Serbian Astronomical Journal 168: 25, Bibcode:2004SerAJ.168...25O 
  6. ^ a b Soubiran, C. et al. (March 2008), "Vertical distribution of Galactic disk stars. IV. AMR and AVR from clump giants", Astronomy and Astrophysics 480 (1): 91–101, arXiv:0712.1370, Bibcode:2008A&A...480...91S, doi:10.1051/0004-6361:20078788 
  7. ^ Muñoz Bermejo, J. et al. (May 2013), "A PCA approach to stellar effective temperatures", Astronomy and Astrophysics 453: A95, arXiv:1303.7218, Bibcode:2013A&A...553A..95M, doi:10.1051/0004-6361/201220961. 

External links[edit]