HD 70642

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HD 70642
Observation data
Epoch J2000.0
Constellation
(pronunciation)		 Puppis
Right ascension 8h 21m 28.1361s
Declination –39° 42′ 19.474″
Apparent magnitude (V) +7.18
Characteristics
Spectral type G5V
U-B color index 0.28
B-V color index 0.70
V-R color index 0.35
R-I color index 0.32
Variable type none
Astrometry
Radial velocity (Rv) +48.1 km/s
Proper motion (μ) RA: −202.07 mas/yr
Dec.: 225.59 mas/yr
Parallax (π) 34.77 ± 0.60 mas
Distance 93.8 ly (28.76 pc)
Absolute magnitude (MV) +4.89
Details
Mass 1 ± 0.05 M☉
Radius 1.01 R☉
Surface gravity (log g) 4.72
Luminosity 0.96 L☉
Temperature 5533 K
Metallicity 0.16 ± 0.02 Fe/H
(145% Sun)
Rotation ?
Age 3.8 × 109 years
Other designations
CD-39°4247, CP(D)-39°2308, LTT 3116, HIP 40952, Gl 304, SAO 199126

HD 70642 is a yellow dwarf star in the constellation of Puppis. This star has about the same mass and radius as the Sun, is slightly cooler and less luminous, and is richer in abundance of iron relative to hydrogen.

Contents

[edit] Planetary system

A long period planet companion to HD 70642 was announced in 2003. Since this planet orbits in a circular orbit (e=0.1) at 3.3 AU, there is the possibility of undiscovered Earth-like planets closer to the star that could be hospitable to life. This planetary system is more similar to our solar system than any other currently known planetary system.

The HD 70642 system
Companion
(in order from star)		 Mass
(MJ)		 Orbital period
(days)		 Semimajor axis
(AU)		 Eccentricity
b >2 (± 0.06) 2231 (± 400) 3.3 0.1 (± 0.06)

[edit] See also

[edit] References

[edit] External links

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