HD 50554
From Infogalactic: the planetary knowledge core
Observation data Epoch J2000.0 Equinox J2000.0 |
|
---|---|
Constellation | Gemini |
Right ascension | 06h 54m 42.83s[1] |
Declination | +24° 14′ 44.0″[1] |
Apparent magnitude (V) | +6.860 |
Characteristics | |
Spectral type | F8V |
B−V color index | 0.532 |
Variable type | “None” |
Astrometry | |
Radial velocity (Rv) | –4.2 km/s |
Proper motion (μ) | RA: –37.58 ± 0.71[1] mas/yr Dec.: –95.54 ± 0.47[1] mas/yr |
Parallax (π) | 33.43 ± 0.59[1] mas |
Distance | 98 ± 2 ly (29.9 ± 0.5 pc) |
Absolute magnitude (MV) | +4.401 |
Details | |
Mass | 1.04 M☉ |
Radius | 1.11 ± 0.33 R☉ |
Luminosity | 1.33 L☉ |
Surface gravity (log g) | 4.35 cgs |
Temperature | 5977 ± 5.8[2] K |
Metallicity | –0.07 |
Rotation | 3.3 km/s |
Age | 4.58 years |
Other designations | |
Database references | |
SIMBAD | data |
Extrasolar Planets Encyclopaedia |
data |
HD 50554 is a star approximately 98 light-years (30 pc) away in the constellation Gemini.
Star
HD 50554 is a yellow-white main-sequence star [F8V] that currently fuse hydrogen in its core. Since the star is 7th magnitude, it is not visible to the unaided eye, but with binoculars or a telescope, it should be easy to see this star. The age of the star is only 10 million years older than our Sun. It is a population I star with metallicity of –0.07 dex [Fe/H] or 85% as much metals as the Sun.
Planetary system
In 2001, a giant planet was announced by the European Southern Observatory, who used the radial velocity method.[3][4] The discovery was confirmed in 2002 using observations from the lick and keck telescopes.[5]
Companion (in order from star) |
Mass | Semimajor axis (AU) |
Orbital period (days) |
Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | >4.46 ± 0.48 MJ | 2.28 ± 0.13 | 1224 ± 12 | 0.444 ± 0.038 | — | — |
See also
References
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