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HD 143361 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 143361</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>16h 01m 50.3484s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–44° 26′ 04.335″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>9.20</td></tr><tr><td colspan="2">Distance</td><td>193.6 ly
(59.35 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G6V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>2.0 AU
(300 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>34 mas</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>1.6 AU
(240 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>2.4 AU
(359 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.18 ± 0.1</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>1086 ± 90 d
(2.973 ± 0.246 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>20 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>187 ± 32°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,453,439 ± 190 JD</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>3.0 MJ
(950 M)</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>October 29, 2008</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Minniti et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

Other designations
HIP 78521 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 143361 b is an extrasolar planet located approximately 194 light-years away in the constellation of Norma, orbiting the 9th magnitude G-type main sequence star HD 143361. This planet has a minimum mass of 3.0 times that of Jupiter. Because the inclination is not known, the true mass is not known. This planet orbits at a distance of 2.0 AU with an orbital eccentricity of 0.18.

This object was detected using the radial velocity method during an astronomical survey conducted by the Magellan Planet Search Program using the MIKE echelle spectrograph on the 6.5-m Magellan II (Clay) telescope.

See also Edit

References Edit

External links Edit

Coordinates: Sky map 16h 01m 50.3484s, −44° 26′ 04.335″


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