HD 216718

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HD 216718
Observation data
Epoch J2000      Equinox J2000
Constellation Aquarius
Right ascension 22h 55m 10.96166s[1]
Declination −04° 59′ 16.4546″
Apparent magnitude (V) 5.72[2] (6.03 + 7.75)[3]
Characteristics
Spectral type K0III-IV[4]
U−B color index +0.60[2]
B−V color index +0.88[2]
Astrometry
Radial velocity (Rv)−7.06±0.13[5] km/s
Proper motion (μ) RA: +29.88[1] mas/yr
Dec.: −10.78[1] mas/yr
Parallax (π)11.99 ± 0.65 mas[1]
Distance270 ± 10 ly
(83 ± 5 pc)
Orbit[3]
Period (P)96.48 yr
Semi-major axis (a)0.4810″
Eccentricity (e)0.6430
Details
Surface gravity (log g)3.16[6] cgs
Temperature5,080[6] K
Metallicity [Fe/H]0.04[6] dex
Rotational velocity (v sin i)0.0[5] km/s
Other designations
BD-05° 5885, HD 216718, HIP 113184, HR 8716, SAO 146388.
Database references
SIMBADdata

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

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  2. ^ a b c Cite error: The named reference aass34_1 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference aa546_A69_5 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference aaa348_487 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference aj135_1_209 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference apjss74 was invoked but never defined (see the help page).