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HD 24040 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>HD 24040</td></tr><tr> <td colspan="2">Constellation</td> <td>Taurus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>03h 50m 22.9681s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+17° 28′ 34.919″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>7.52</td></tr><tr><td colspan="2">Distance</td><td>151.7 ± 7.5 ly
(46.51 ± 2.3 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G0</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>1.18 M</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>4.68 AU
(700 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>100.6 mas</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>4.36 AU
(652 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>5.00 AU
(748 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.068 ± 0.039</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>3400 ± 160 d
(9.3 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>15 km/s</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>2,450,730 ± 430 JD</td></tr><tr> <td>Semi-amplitude</td> <td style="text-align: center">(K)</td> <td>48.9 ± 1.7 m/s</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>>4.04 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>March 12, 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Butler et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>California, USA</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published[1]</td></tr>

Other designations
HIP 17960 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 24040 b is a long-period exoplanet taking approximately 3700 days to orbit at 4.92 astronomical units in a circular orbit. It has minimum mass 4 times that of Jupiter. To have more accurate true mass, inclination must be known, yet the inclination is not known.[1][2]

See also Edit

References Edit

External links Edit

Coordinates: Sky map 03h 50m 22.9681s, +17° 28′ 34.919″


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