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Kepler-68b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>Kepler-68 (KOI 246)</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>19h 24m 07.76s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>+49° 02′ 25″</td></tr><tr> <td>Apparent magnitude</td> <td style="text-align: center">(mV)</td> <td>8.588</td></tr><tr><td colspan="2">Distance</td><td>440 ly
(135 pc)</td></tr><tr> <td>Mass</td> <td style="text-align: center">(m)</td> <td>1.079±0.051 M</td></tr><tr> <td>Radius</td> <td style="text-align: center">(r)</td> <td>1.243±0.019 R</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>5793±74 K</td></tr><tr> <td>Metallicity</td> <td style="text-align: center">[Fe/H]</td> <td>0.12±0.074</td></tr><tr> <td>Age</td> <td style="text-align: center"></td> <td>6.3 ± 1.7 Gyr</td></tr>

Physical characteristics

<tr><td>Mass</td><td style="text-align: center">(m)</td><td>5.79 M</td></tr><tr><td>Radius</td><td style="text-align: center">(r)</td><td>2.31±0.07 Template:Earth radius</td></tr><tr><td>Density</td><td style="text-align: center">(ρ)</td><td>2.60±0.74 g cm-3</td></tr><tr> <td>Temperature</td> <td style="text-align: center">(T)</td> <td>1280 K</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>0.06170 AU</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>5.398763 d</td></tr><tr> <td>Inclination</td> <td style="text-align: center">(i)</td> <td>87.60±0.9°</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>12 February 2013</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td></td></tr><tr> <td colspan="2">Discovery method</td> <td>Transit (Kepler Mission)</td></tr><tr> <td colspan="2">Other detection methods</td> <td>Radial velocity</td></tr><tr> <td colspan="2">Discovery status</td> <td>Confirmed</td></tr>

Other designations
KOI 246.01

Kepler-68b is an exoplanet orbiting the Sun-like star Kepler-68 in the constellation of Cygnus. Discovered by planetary-transit methods by the Kepler space telescope in February 2013, it has a radius of 2.31 ± 0.07 that of Earth and a density of 2.46–4.3 g/cm3. It has an orbital period of 5.398763 days at a distance of about 0.0617 AU from its star.[1] Doppler measurements were made to determine its mass to be 5.79 times that of Earth (0.026 MJ).[2]

With a density of 2.6 g/cm3 it has physical characteristics of both a super-Earth and a mini-Neptune.[3]

See alsoEdit

ReferencesEdit

Template:Exoplanets Template:Kepler-68 Template:2013 in space


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