HD 118889

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HD 118889
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 13h 39m 34.6169s
Declination +10° 44′ 46.567″
Apparent magnitude (V) 5.58
Characteristics
Spectral type F0V
U−B color index 0.05
B−V color index 0.33
Astrometry
Radial velocity (Rv) -18 km/s
Proper motion (μ) RA: -113.44 mas/yr
Dec.: -13.38 mas/yr
Parallax (π) 18.68 ± 0.91 mas
Distance 175 ± 9 ly
(54 ± 3 pc)
Absolute magnitude (MV) 5.884
Details
Mass 1.7 M
Radius 1.4 R
Luminosity L
Temperature 6,000–7,500 K
Rotation 111 Km/s
0,00175 Year
Orbit
Companion CCDM 13395+1045 B
BU 612
Period (P) 22.35 yr
Semi-major axis (a) 0.208"
Eccentricity (e) 0.527
Inclination (i) 47.8°
Longitude of the node (Ω) 35.4°
Periastron epoch (T) 1929.69
Other designations
BD+11° 2589, HIP 66640, SAO 100654, HR 5138.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)
Database references
SIMBAD data

HD 118889 or ADS 8987 B is a double or multiple star.

References[edit]