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HD 43197 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 43197</td></tr><tr> <td colspan="2">Constellation</td> <td>Canis Major</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>06h 13m 35.662s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–29° 53′ 50.17″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>8.95</td></tr><tr><td colspan="2">Distance</td><td>180 ± 10[1] ly
(56 ± 4[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G9IV/V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.868 AU
(129.8 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>15.8 mas</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>327.8 d
(0.8975 y)</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.6 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>October 19, 2009</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Naef et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>radial velocity (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[2]</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 43197 b is an extrasolar planet which orbits the G-type main sequence or subgiant star HD 43197, located approximately 180 light years away in the constellation Canis Major. This planet has at least three-fifths the mass of Jupiter and takes 0.9 years to orbit the star at a semimajor axis of 0.868 AU.[2] However unlike most other known exoplanets, its eccentricity is not known, but it is typical that its inclination is not known. This planet was detected by HARPS on October 19, 2009, together with 29 other planets.

References Edit

Coordinates: Sky map 06h 13m 35.6615s, −29° 53′ 50.169″


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