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HD 142415 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 142415</td></tr><tr> <td colspan="2">Constellation</td> <td>Norma</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>15h 57m 40.7907s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−60° 12′ 00.926″</td></tr><tr><td colspan="2">Distance</td><td>113 ly
(34.6 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G1V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>1.07 AU</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.535 AU</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>1.605 AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.5</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>386.3±1.6 d
(1.058 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>30.2 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>255 ± 4°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,451,519 ± 4 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>51.3 ± 2.3 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.69 MJ
(537 M)</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>30 June 2003</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Mayor et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>doppler spectroscopy
(CORALIE)</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 78169 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 142415 b is an exoplanet with the semi-amplitude of 51.3 ± 2.3 m/s. This indicates the minimum mass of 1.69 Jupiter mass, an orbital period of 386.3 days, and the semi-major axis of 1.07 astronomical units based from its stellar mass. The wild, oval pathed wobble of the star used by Doppler spectrometer indicates that the orbit of the planet is highly eccentric at around 50%.[1]

The planet was discovered in La Silla Observatory on 30 June 2003 by Mayor, who used the CORALIE spectrograph.

See also Edit

ReferencesEdit

External links Edit

Coordinates: Sky map 15h 57m 40.7907s, −60° 12′ 00.926″


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