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OGLE-TR-56b
Extrasolar planet List of extrasolar planets
300px
Size comparison of OGLE-TR-56b with Jupiter.
Parent star

<tr> <td colspan="2">Star</td> <td>OGLE-TR-56</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 56m 35.51s[1]</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–29° 32′ 21.2″[1]</td></tr><tr><td colspan="2">Distance</td><td>~4,900 ly
(~1,500[2] pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>G?</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.0225 ± 0.0004 AU
(3.37 Gm)</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>0.0225 AU
(3.37 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>0.0225 AU
(3.37 Gm)</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>1.211909 ± 0.000001 d</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>(29.08582 h)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>203 km/s</td></tr><tr> <td>Inclination</td> <td style="text-align: center">(i)</td> <td>78.8 ± 0.5°</td></tr><tr> <td>Time of transit</td> <td style="text-align: center">(Tt)</td> <td>3936.598 ± 0.001 JD</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>1.29 ± 0.12 MJ</td></tr><tr><td>Radius</td><td style="text-align: center">(r)</td><td>1.30 ± 0.05 Template:Jupiter radius</td></tr><tr><td>Density</td><td style="text-align: center">(ρ)</td><td>779 kg m-3</td></tr><tr><td>Surface gravity</td><td style="text-align: center">(g)</td><td>19.8 m/s² (2.02 g)</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>~1973 K</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>3 November 2002
confirmed: 4 January 2003</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Konacki et al.[3]</td></tr><tr> <td colspan="2">Discovery method</td> <td>Transit</td></tr><tr> <td colspan="2">Other detection methods</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published[3]</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>

OGLE-TR-56b is an extrasolar planet located approximately 1500 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-TR-56. This planet was discovered on November 3, 2002[1] by the OGLE project using the transit method and confirmed on January 4, 2003 by the Doppler technique.[2] The period of this confirmed planet was the shortest until the confirmed discovery of WASP-12b on April 1, 2008.[4] The short period and proximity of the OGLE-TR-56 b to its host mean it belongs to a class of objects known as hot Jupiters.

File:OGLE-TR-56 b rv.pdf

The planet is theorized to have iron rain.[5]

See also Edit

References Edit

External links Edit

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Coordinates: Sky map 17h 56m 35.51s, −29° 32′ 21.2″


de:OGLE-TR-56 b

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