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HD 33283 b
Extrasolar planet List of extrasolar planets
300px
Celestia image of HD 33283 b, as a hot jupiter.
Parent star

<tr> <td colspan="2">Star</td> <td>HD 33283</td></tr><tr> <td colspan="2">Constellation</td> <td>Lepus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>05h 08m 01.0118s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–26° 47′ 50.896″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>8.05</td></tr><tr><td colspan="2">Distance</td><td>283.37 ly
(86.88 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G4V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.145 ± 0.006 AU
(21.7 Gm)</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.075 AU
(11.2 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.215 AU
(32.2 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.48 ± 0.05</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>18.179 ± 0.007 d
(0.049771 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>86.5 km/s</td></tr><tr> <td>Argument of
periastron
</td> <td style="text-align: center">(ω)</td> <td>155.8 ± 8.0°</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2453017.6 ± 0.3 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>25.2 ± 2.0 m/s</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.33 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 17, 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Johnson et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>Template:Country data United States</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</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 33283 b is an exoplanet orbiting around HD 33283. The mass of the planet is about 1/3 that of Jupiter or about the same as Saturn. However, the planet orbits very close to the star, taking only 18 days to complete its orbit with average speed of 86.5 km/s. Despite of this, its orbit is eccentric, bringing it as close as 0.075 AU to the star and as far away as 0.215 AU.[1]

See alsoEdit

ReferencesEdit

External linksEdit

Coordinates: Sky map 05h 08m 01.0118s, −26° 47′ 50.896″


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