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Gliese 832 b
Extrasolar planet List of extrasolar planets
Parent star

<tr> <td colspan="2">Star</td> <td>Gliese 832</td></tr><tr> <td colspan="2">Constellation</td> <td>Grus</td></tr><tr> <td>Right ascension</td> <td style="text-align: center">(α)</td> <td>21h 33m 33.9752s</td></tr><tr> <td>Declination</td> <td style="text-align: center">(δ)</td> <td>–49° 00′ 32.422″</td></tr><tr><td colspan="2">Distance</td><td>16.10 ly
(4.938 pc)</td></tr><tr><td colspan="2">Spectral type</td> <td>M1.5V</td></tr>

Orbital elements

<tr><td>Semimajor axis</td><td style="text-align: center">(a)</td> <td>3.4 ± 0.4 AU
(510 Gm)</td></tr><tr><td> </td> <td style="text-align: center"> </td> <td>690 mas</td></tr><tr> <td>Periastron</td> <td style="text-align: center">(q)</td> <td>3.0 AU
(450 Gm)</td></tr><tr> <td>Apastron</td> <td style="text-align: center">(Q)</td> <td>3.8 AU
(570 Gm)</td></tr><tr> <td>Eccentricity</td> <td style="text-align: center">(e)</td> <td>0.12 ± 0.11</td></tr><tr><td>Orbital period</td><td style="text-align: center">(P)</td> <td>3416 ± 131 d
(9.352 y)</td></tr><tr> <td>Orbital speed</td> <td style="text-align: center">(υ)</td> <td>10.9 km/s</td></tr><tr> <td>Time of periastron</td> <td style="text-align: center">(T0)</td> <td>1211 ± 353 JD</td></tr>

Physical characteristics

<tr><td>Minimum mass</td><td style="text-align: center">(m sin i)</td><td>0.64 ± 0.06 MJ</td></tr>

Discovery information

<tr> <td colspan="2">Discovery date</td> <td>September 1, 2008</td></tr><tr> <td colspan="2">Discoverer(s)</td> <td>Bailey et al.</td></tr><tr> <td colspan="2">Discovery method</td> <td>Doppler spectroscopy</td></tr><tr> <td colspan="2">Discovery site</td> <td>Anglo-Australian Observatory</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
Encyclopaedia
</td><td>data</td></tr><tr><td colspan=2>SIMBAD</td><td>data</td></tr>

Gliese 832 b (Gl 832 b or GJ 832 b) is an extrasolar planet located approximately 16 light-years from our sun in the constellation of Grus, orbiting the red dwarf star Gliese 832.[1]

OrbitEdit

The planet takes 3416 days to revolve at an orbital distance of 3.4 AU; this is the longest-period Jupiter-like planet orbiting a red dwarf.[2] The brightness of the faint parent star at that distance corresponds to the brightness of the Sun from 80AU (or a 100 times brighter than a full Moon as seen from Earth).

DiscoveryEdit

The planet was discovered in the Anglo-Australian Observatory on September 1, 2008.

ReferencesEdit

  1. Wall, Mike (June 25, 2014). Nearby Alien Planet May Be Capable of Supporting Life. Space.com. Retrieved July 1, 2014.
  2. Bailey, Jeremy et al. (2008). A Jupiter-like Planet Orbiting the Nearby M Dwarf GJ832. The Astrophysical Journal 690: 743–747.

External linksEdit

Coordinates: Sky map 21h 33m 33.9752s, −49° 00′ 32.422″


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