HD 190984

HD 190984
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Pavo
Right ascension 20h 11m 30.716s[1]
Declination –64° 37 13.69[1]
Apparent magnitude (V) 8.76[2]
Characteristics
Spectral type F8V[2]
Apparent magnitude (B) 9.27
Apparent magnitude (J) 7.671
Apparent magnitude (H) 7.389
Apparent magnitude (K) 7.319
B−V color index 0.579[2]
Astrometry
Radial velocity (Rv)20.2 km/s
Proper motion (μ) RA: 0.68 ± 0.73[1] mas/yr
Dec.: 44.57 ± 0.81[1] mas/yr
Parallax (π)9.8 ± 2.6[2] mas
Distanceapprox. 330 ly
(approx. 100 pc)
Absolute magnitude (MV)3.71[2]
Details
Mass0.91[2] M
Radius1.53[2] R
Luminosity2.69[2] L
Surface gravity (log g)4.02 ± 0.22[2] cgs
Temperature5988 ± 25[2] K
Metallicity-0.48 ± 0.06[2]
Rotation23 days
Rotational velocity (v sin i)3.4[2] km/s
Other designations
CD–64°1271, HIP 99496, PPM 364454
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia
data

HD 190984 is a 9th magnitude F-type main sequence star located approximately 330 light years away in the constellation Pavo. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content is one-thirds as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.

The HD 190984 planetary system[2]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥3.1 MJ 5.5 4885 ± 1600 0.57 ± 0.10

See also

References

Coordinates: 20h 11m 30.7166s, −64° 37′ 13.694″


This article is issued from Wikipedia - version of the Monday, December 29, 2014. The text is available under the Creative Commons Attribution/Share Alike but additional terms may apply for the media files.