Extrasolar planet List of extrasolar planets
Size comparison of SWEEPS-04 with Jupiter.
Parent star

<tr> <td colspan="2">Star</td> <td>SWEEPS J175853.92−291120.6</td></tr><tr> <td colspan="2">Constellation</td> <td>Sagittarius</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>17h 58m 53.92s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>−29° 11′ 20.6″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>18.8</td></tr><tr><td colspan="2">Distance</td><td>22000 ly
(6600 pc)</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.055 AU</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>4.2 d</td></tr><tr> <td>Inclination</td> <td style="text-align: center">(i)</td> <td>>87°</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td><3.8 MJ</td></tr><tr><td>Radius</td><td style="text-align: center">(r)</td><td>0.81±0.1 Template:Jupiter radius</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>October 4, 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Sahu et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Transit</td></tr><tr> <td colspan="2">Discovery status</td> <td>Confirmed</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>

SWEEPS-04 is an extrasolar planet orbiting the star SWEEPS J175853.92−291120.6 in the constellation Sagittarius approximately 22000 light years away (based on a distance modulus of 14.1) from the Solar System. This planet was found in 2006 by the Sagittarius Window Eclipsing Extrasolar Planet Search (SWEEPS) program that uses transit method.

The upper limit on the planet's mass is 3.8 times the mass of Jupiter. The best fit radius is 0.81 times that of Jupiter, but the uncertainty in this value is large, around 12%. It orbits at an average distance of 8,200,000 km (0.055 AU) from the parent star, taking 4.2 days to revolve around it.

See alsoEdit


External linksEdit


  • SWEEPS-04. Exoplanets. Retrieved 2009-05-22.

Coordinates: Sky map 17h 58m 54s, −29° 11′ 21″

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