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HD 169830 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 169830</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 27m 49.4838s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–29° 49′ 00.715″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>5.9</td></tr><tr><td colspan="2">Distance</td><td>118.49 ly
(36.33 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>F7V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.818 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.332 ± 0.03</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>226.01 ± 0.23 d</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>148 ± 2°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,451,923 ± 1 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>80.7 ± 0.9 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>2.98 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 15, 2000[1]</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Mayor, Udry et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery site</td> <td>Template:Country data France</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr> <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 169830 b is an extrasolar planet[2] three times the mass of Jupiter. Due to its high mass, it is most likely a gas giant planet, akin to Jupiter and Saturn in our own solar system. This planet at 0.8 AU is slightly farther out than Venus is in our solar system, orbiting around its star every 262 days.

See also Edit

ReferencesEdit

  1. Script error
  2. (2001). The CORALIE survey for southern extrasolar planets V. 3 new extrasolar planets. Astronomy and Astrophysics 375 (1): 205–218.

Coordinates: Sky map 18h 27m 49.4838s, −29° 49′ 00.715″


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