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BD-17°63 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>BD-17°63</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>00h 28m 34.31s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–16° 13′ 34.8″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>9.62</td></tr><tr><td colspan="2">Distance</td><td>116 ± 5[1] ly
(36 ± 2[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K5V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.34 ± 0.02 AU
(200 ± 3 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>38.7 mas</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.62 AU
(93 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>2.06 AU
(308 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.54 ± 0.005</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>655.6 ± 0.6 d
(1.795 ± 0.001 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>22.3 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>112.2 ± 1.9°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,454,627.1 ± 1.5 JD</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>5.1 ± 0.12 MJ
(1620 ± 38 M)</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>October 26, 2008</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Moutou et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy
(HARPS)</td></tr><tr> <td colspan="2">Discovery site</td> <td>La Silla Observatory</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

Other designations
HIP 2247 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>

BD-17°63 b is an extrasolar planet located approximately 113 light-years away in the constellation of Cetus, orbiting the 10th magnitude K-type main sequence star BD-17°63. This planet has a minimum mass of 5.1 MJ and orbits at a distance of 1.34 astronomical units from the star. The distance ranges from 0.62 AU to 2.06 AU, corresponding to the eccentricity of 0.54. One revolution takes about 656 days.[2]

This planet was discovered on October 26, 2008 by Moutou et al. using the HARPS spectrograph on ESO’s 3.6 meter telescope installed at La Silla Observatory in Atacama desert, Chile.

See also Edit

References Edit

External links Edit

Coordinates: Sky map 00h 28m 34.3061s, −16° 13′ 34.839″


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