HD 130144

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HD 130144
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 14h 46m 05.9459s
Declination +15° 07′ 54.436″
Apparent magnitude (V) 5.88
Characteristics
Spectral type M5IIIab
U−B color index 1.31
B−V color index 1.57
Variable type Semi-regular pulsating Star
variable star identification 6796
Astrometry
Radial velocity (Rv) -22.3 km/s
Proper motion (μ) RA: -85.07 mas/yr
Dec.: 19.27 mas/yr
Parallax (π) 3.59 ± 0.86 mas
Distance approx. 900 ly
(approx. 280 pc)
Absolute magnitude (MV) 7.21
Details
Mass 0.4 M
Radius 0.5 R
Luminosity 0.04 L
Temperature 2,000–3,500 K
Other designations
EK Boötis, BD+15° 2758, FK5 3168, HIP 72208, HR 5512, SAO 101200.
Database references
SIMBAD data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HD 130144 or EK Boötis is a semiregular variable star.

References[edit]