Extrasolar planet List of extrasolar planets
Size comparison of WASP-3b with Jupiter.
Parent star

<tr> <td colspan="2">Star</td> <td>WASP-3</td></tr><tr> <td colspan="2">Constellation</td> <td>Lyra</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>18h 33m 32s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+35° 39′ 42″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>10.64</td></tr><tr><td colspan="2">Distance</td><td>727 ly
(223 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>F7V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.0317+0.0006
AU</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>1.8468372 ± 6e-07 d</td></tr><tr> <td>Inclination</td> <td style="text-align: center">(i)</td> <td>85.06+0.15
°</td></tr><tr> <td>Time of transit</td> <td style="text-align: center">(Tt)</td> <td>2454605.55915 ± 0.00023 JD</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>2.06 ± 0.13 MJ</td></tr><tr><td>Radius</td><td style="text-align: center">(r)</td><td>1.454 ± 0.084 Template:Jupiter radius</td></tr><tr><td>Density</td><td style="text-align: center">(ρ)</td><td>1040 kg m-3</td></tr><tr><td>Surface gravity</td><td style="text-align: center">(g)</td><td>2.71 m/s² (26.6 g)</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>1983 K</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>October 31, 2007</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Pollacco et al. (SuperWASP)</td></tr><tr> <td colspan="2">Discovery method</td> <td>Transit</td></tr><tr> <td colspan="2">Discovery site</td> <td>ORM</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-3 b rv.pdf

WASP-3b is an extrasolar planet orbiting the star WASP-3 located over 727 light-years away in the constellation Lyra. It was discovered via the transit method by SuperWASP, and follow up radial velocity observations confirmed that WASP-3b is a planet. The planet's mass and radius indicate that it is a gas giant with a similar bulk composition to Jupiter. WASP-3b has such an orbital distance around its star to classify it in the class of planets known as hot Jupiters and has an atmospheric temperature of approximately 1983 K.[1]

WASP-3b undergoes no detectable gravitational tugging from other bodies in this system.[2]

See alsoEdit


  1. (2008). WASP-3b: a strongly irradiated transiting gas-giant planet. Monthly Notices of the Royal Astronomical Society 385 (3): 1576–1584.
  2. M Montalto (Nov 2, 2012). A new analysis of the WASP-3 system: no evidence for an additional companion. MNRAS 427 (4): 2757.

External linksEdit


Coordinates: Sky map 18h 33m 32s, +35° 39′ 42″

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