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HD 224693 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 224693</td></tr><tr> <td colspan="2">Constellation</td> <td>Cetus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>23h 59m 53.833s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−22° 25′ 41.21″[1]</td></tr><tr><td colspan="2">Distance</td><td>320 ± 30[1] ly
(98 ± 9[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G2IV</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.233 AU
(34.9 Gm)</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.221 AU
(33.1 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.245 AU
(36.7 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.05 ± 0.03</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>26.73 ± 0.02 d
(0.07318 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>95.2 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>6 ± 200°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2453193.9 ± 3 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>40.2 ± 2.0 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.71 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 17, 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Johnson and NK2 consortium</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler Spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>Hawaii, USA</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 224693 b is an extrasolar planet orbiting the star HD 224693 every 27 days with a minimum mass 71% of Jupiter.[2]

See also Edit

ReferencesEdit

  1. 1.0 1.1 1.2 1.3 (2007). Validation of the new Hipparcos reduction. Astronomy and Astrophysics 474 (2): 653–664. Vizier catalog entry
  2. (2006). The N2K Consortium. VI. Doppler Shifts without Templates and Three New Short-Period Planets. The Astrophysical Journal 647 (1): 600–611.

External links Edit

Coordinates: Sky map 23h 59m 53.8329s, −22° 25′ 41.208″


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