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HD 164604 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 164604</td></tr><tr> <td colspan="2">Constellation</td> <td>Sagittarius</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>18h 03m 06.95s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–28° 33′ 38.3″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>9.7</td></tr><tr><td colspan="2">Distance</td><td>123.9 ± 8.8 ly
(38.0 ± 2.7 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K2V</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>0.80 M</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>-0.18</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.13 ± 0.05 AU
(169 Gm)</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.85 AU
(128 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>1.40 AU
(210 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.24 ± 0.14</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>606.4 ± 9.0 d
(1.66 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>20.3 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>51 ± 23°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>24552674 ± 80 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>77 ± 32 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>2.7 ± 1.3 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>January 26, 2010</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Arriagada et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>Las Campanas Observatory</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

Other designations
CD–28°14058 b, HIP 88414 b

<tr style="background-color: #A0B0FF;"><td align=center colspan=3>Database references</td></tr><tr valign=baseline><td colspan=2>Extrasolar Planets
Encyclopaedia
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

HD 164604 b is an extrasolar planet discovered in January of 2010 in association with the Magellan Planet Search Program. It has 2.7 times the mass of Jupiter and an orbital period of 606.4 days. Its star is classified as a K2 V dwarf and is roughly 124 light-years away from Earth. [1]

See alsoEdit

References Edit

Coordinates: Sky map 18h 03m 06.95s, −28° 33′ 38.3″

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