Extrasolar planet List of extrasolar planets
Size comparison of WASP-10b with Jupiter.
Parent star

<tr> <td colspan="2">Star</td> <td>WASP-10</td></tr><tr> <td colspan="2">Constellation</td> <td>Pegasus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>23h 15m 58s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+31° 27′ 46″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>12.70</td></tr><tr><td colspan="2">Distance</td><td>290±70 ly
(90±20 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>K5</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.0371+0.0014
AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.057+0.011
</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>3.0927616+1.12E-5
d</td></tr><tr> <td>Inclination</td> <td style="text-align: center">(i)</td> <td>86.8+0.6
°</td></tr><tr> <td>Argument of
</td> <td style="text-align: center">(ω)</td> <td>2.737+0.194
°</td></tr><tr> <td>Time of transit</td> <td style="text-align: center">(Tt)</td> <td>2454357.85803+0.00042

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>3.06+0.23
MJ</td></tr><tr><td>Radius</td><td style="text-align: center">(r)</td><td>1.08 ± 0.02 Template:Jupiter radius</td></tr><tr><td>Density</td><td style="text-align: center">(ρ)</td><td>3220 kg m-3</td></tr><tr><td>Surface gravity</td><td style="text-align: center">(g)</td><td>6.93 g</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>1300 K</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>April 1, 2008</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Cameron et al. (SuperWASP)</td></tr><tr> <td colspan="2">Discovery method</td> <td>Transit</td></tr><tr> <td colspan="2">Discovery site</td> <td>SAAO</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
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

File:WASP-10 b rv.pdf

WASP-10b is an extrasolar planet discovered in 2008 by SuperWASP using the transit method. Follow-up radial velocity observations showed that it is three times more massive than Jupiter, while the transit observations showed that its radius is 8% bigger than Jupiter, quite small for a Hot Jupiter but this is due to its high mass. This makes the density of this planet similar to our Moon. Its takes 3 days to orbit around the star, in contrast to 365 days for the Earth to go around the Sun.[1] [2] It is the only confirmed extrasolar planet in WASP-10's planetary system, since the only other detected planet in WASP-10's planetary system, WASP-10c, is still unconfirmed.[3]

See alsoEdit


  1. Johnson et al. (2009). A SMALLER RADIUS FOR THE TRANSITING EXOPLANET WASP-10b. The Astrophysical Journal Letters 692 (2): L100–L104.
  2. Christian et al. (December 29, 2008). WASP-10b: a 3MJ, gas-giant planet transiting a late-type K star. Monthly Notices of the Royal Astronomical Society 392 (4): 1585–1590.
  3. Extrasolar Planets Encyclopaedia - WASP-10.

External linksEdit


Coordinates: Sky map 23h 15m 58s, +31° 27′ 46″

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