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HD 129445 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 129445</td></tr><tr> <td colspan="2">Constellation</td> <td>Circinus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>14h 46m 03.064s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–68° 45′ 45.89″[1]</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>8.8</td></tr><tr><td colspan="2">Distance</td><td>210 ± 20[1] ly
(66 ± 5[1] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G8V</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>0.99 M</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>0.25</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>2.9 ± 0.2 AU
(440 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>43 mas</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.9 AU
(130 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>5.0 AU
(750 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.70 ± 0.10</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>1840 ± 55 d
(5.04 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>17 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>163 ± 15°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>24553093 ± 50 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>38 ± 6 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>1.6 ± 0.6 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>January 26, 2010</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Arriagada et al.[2]</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>Las Campanas Observatory</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published[2]</td></tr>

Other designations
CD–68°1403 b, HIP 72203 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>

This planet is an eccentric Jupiter gas giant discovered by the Magellan Planet Search Program in 2010.[2]

References Edit

  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. 2.0 2.1 2.2 (2010). Five Long-period Extrasolar Planets in Eccentric orbits from the Magellan Planet Search Program. The Astrophysical Journal 711 (2): 1229–35.


Coordinates: Sky map 14h 46m 03.06s, −68° 45′ 45.9″

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