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HD 70573 b
Extrasolar planet List of extrasolar planets
300px
Artist's conception of HD 70573 b, as a jovian planet.
Parent star

<tr> <td colspan="2">Star</td> <td>HD 70573</td></tr><tr> <td colspan="2">Constellation</td> <td>Hydra</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>8h 22m 49.9514s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+01° 51′ 33.552″</td></tr><tr><td colspan="2">Distance</td><td>149 ly
(45.7 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G1.2V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.76 ± 0.05 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.02 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>2.50 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.4 ± 0.1</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>851.8 ± 11.6 d
(2.332 y)</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>269.6 ± 14.3°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,452,106.54 ± 25.72 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>149 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>6.1 ± 0.4 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>March 19, 2007</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Setiawan et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>radial velocity</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

HD 70573 b orbits the youngest RV host star HD 70573 approximately 149 light-years away in the constellation of Hydra. The discovery of the planet is important because it enables the study of debris disks around young stars in relation to presence of planets.

ReferencesEdit

External links Edit

Coordinates: Sky map 08h 22m 49.9514s, +01° 51′ 33.552″


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