Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>OGLE-2005-BLG-169L</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>18h 06m 05s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–30° 43′ 57″</td></tr><tr><td colspan="2">Distance</td><td>8,800 ly
(2,700 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>M?</td></tr> <tr style="background-color: #A0B0FF;"><td colspan="3" align=center>Observed separation</td></tr><tr> <td>Projected separation</td> <td style="text-align: center">(d)</td> <td>2.7 AU</td></tr><tr valign=baseline> <td>Source-lens
closest approach</td> <td style="text-align: center">(t0)</td> <td>2,453,491.88 JD</td></tr><tr> <td>Angle of source motion</td> <td style="text-align: center">(α)</td> <td>117.0°</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>13 M</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>~70 K</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>10 March 2006</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>MicroFUN,
PLANET/RoboNet, OGLE</td></tr><tr> <td colspan="2">Discovery method</td> <td>Gravitational microlensing</td></tr><tr> <td colspan="2">Discovery status</td> <td>Published</td></tr>

Other designations
EWS 2005-BUL-169Lb, EWS 2005-BLG-169Lb

<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>

OGLE-2005-BLG-169Lb is an extrasolar planet located approximately 2700 parsecs away in the constellation of Sagittarius, orbiting the star OGLE-2005-BLG-169L. This planet was discovered by the OGLE project using the gravitational microlensing method. Based on a most likely mass for the host star of 0.49 solar mass (M), the planet has a mass of 13 times that of Earth (M). Its mass and estimated temperature are close to those of Uranus. It is speculated that this planet may either be an ice giant like Uranus, or a "naked super-Earth" with a solid icy or rocky surface.[1]

See alsoEdit


  1. (2006). Microlens OGLE-2005-BLG-169 Implies That Cool Neptune-like Planets Are Common. The Astrophysical Journal Letters 644 (1): L37–L40.

External links Edit

Coordinates: Sky map 18h 06m 05s, −30° 43′ 57″


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