HD 5388

From Wikipedia, the free encyclopedia
Jump to: navigation, search
HD 5388
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Phoenix
Right ascension 00h 55m 11.89s[1]
Declination –47° 24′ 21.5″[1]
Apparent magnitude (V) 6.73[2]
Characteristics
Spectral type F6V[2]
Apparent magnitude (B) 7.73
Apparent magnitude (J) 5.795
Apparent magnitude (H) 5.524
Apparent magnitude (K) 5.441
B−V color index 0.500[2]
Astrometry
Radial velocity (Rv) 39.2 km/s
Proper motion (μ) RA: –80.14 ± 0.55[1] mas/yr
Dec.: –178.07 ± 0.49[1] mas/yr
Parallax (π) 18.62 ± 0.66[1] mas
Distance 175 ± 6 ly
(54 ± 2 pc)
Absolute magnitude (MV) 3.10[2]
Details
Mass 1.21[2] M
Radius 1.91[2] R
Luminosity 4.60[2] L
Surface gravity (log g) 4.28 ± 0.06[2] cgs
Temperature 6297 ± 32[2] K
Metallicity -0.27 ± 0.02[2]
Rotation 23 days
Rotational velocity (v sin i) 4.2[2] km/s
Other designations
78 G. Phoenicis, CD–48°216, CPD-48°109, GC 1100, HIP 4311, LTT 518, NLTT 3057, PPM 305379, SAO 215291
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data

HD 5388 (78 G. Phoenicis[3]) is a 7th magnitude F-type main sequence star located approximately 175 light years away in the constellation Phoenix. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content is half as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.[2] This was later demonstrated to be a brown dwarf rather than a planet.[4]

The HD 5388 system[2][4]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b 69 MJ 1.76 777 ± 4 0.40 ± 0.02

See also[edit]

References[edit]

Coordinates: Sky map 00h 55m 11.8897s, −47° 24′ 21.475″