HD 216718

Last updated
HD 216718
Observation data
Epoch J2000       Equinox J2000
Constellation Aquarius [1]
Right ascension 22h 55m 10.96166s [2]
Declination −04° 59′ 16.4546″
Apparent magnitude  (V)5.72 [3] (6.03 + 7.75) [4]
Characteristics
Spectral type K0III-IV [5]
U−B color index +0.60 [3]
B−V color index +0.88 [3]
Astrometry
Radial velocity (Rv)−7.06±0.13 [6] km/s
Proper motion (μ)RA: +29.88 [2] mas/yr
Dec.: −10.78 [2] mas/yr
Parallax (π)11.99±0.65  mas [2]
Distance 270 ± 10  ly
(83 ± 5  pc)
Absolute magnitude  (MV)+1.12 [1]
Orbit [4]
Period (P)96.48 yr
Semi-major axis (a)0.4810″
Eccentricity (e)0.6430
Details
Surface gravity (log g)3.16 [7]   cgs
Temperature 5,080 [7]   K
Metallicity [Fe/H]0.04 [7]   dex
Rotational velocity (v sin i)0.0 [6]  km/s
Other designations
BU 718, BD−05°5885, HD 216718, HIP 113184, HR 8716, SAO 146388
Database references
SIMBAD data

HD 216718 is a binary star system in the equatorial constellation of Aquarius.

References

  1. 1 2 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.
  2. 1 2 3 4 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
  3. 1 2 3 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
  4. 1 2 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
  5. ↑ Randich, S.; et al. (August 1999), "Lithium in population I subgiants", Astronomy and Astrophysics, 348: 487–500, Bibcode:1999A&A...348..487R
  6. 1 2 Massarotti, Alessandro; et al. (January 2008), "Rotational and Radial Velocities for a Sample of 761 HIPPARCOS Giants and the Role of Binarity", The Astronomical Journal, 135 (1): 209–231, Bibcode:2008AJ....135..209M, doi: 10.1088/0004-6256/135/1/209 , S2CID   121883397
  7. 1 2 3 McWilliam, Andrew (December 1990), "High-resolution spectroscopic survey of 671 GK giants. I - Stellar atmosphere parameters and abundances", Astrophysical Journal Supplement Series, 74: 1075–1128, Bibcode:1990ApJS...74.1075M, doi: 10.1086/191527



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