About: HD 154857 c

An Entity of Type: planet, from Named Graph: http://dbpedia.org, within Data Space: dbpedia.org

HD 154857 c is an extrasolar planet located approximately 224 light-years away in the constellation of Ara, orbiting the star HD 154857. This planet takes about 3470 days (9.5 years) to orbit the star. The first signs of this planet were noticed on 9 February 2007 by O’Toole in Australia using the method Doppler spectroscopy, along with HD 23127 b and HD 159868 b. The orbit had not yet been completely observed, so the values quoted were lower limits. The previously unconstrained orbital period and minimum mass were constrained in January 2014.

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dbo:Planet/orbitalPeriod
  • 3469.875
  • 3470.0
dbo:abstract
  • HD 154857 c is an extrasolar planet located approximately 224 light-years away in the constellation of Ara, orbiting the star HD 154857. This planet takes about 3470 days (9.5 years) to orbit the star. The first signs of this planet were noticed on 9 February 2007 by O’Toole in Australia using the method Doppler spectroscopy, along with HD 23127 b and HD 159868 b. The orbit had not yet been completely observed, so the values quoted were lower limits. The previously unconstrained orbital period and minimum mass were constrained in January 2014. (en)
  • HD 154857 c是一顆距離地球約209光年的太陽系外行星，位於天壇座，母恆星是HD 154857。該行星的軌道週期3470日（9.5年）。 (zh)
dbo:detectionMethod
  • Doppler spectroscopy
dbo:discovered
  • 2007-02-09 (xsd:date)
dbo:orbitalPeriod
  • 299797200.000000 (xsd:double)
  • 299808000.000000 (xsd:double)
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  • 16797286 (xsd:integer)
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  • 3156 (xsd:nonNegativeInteger)
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  • 1110866911 (xsd:integer)
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dbp:apsis
  • astron (en)
dbp:discovered
  • 2007-02-09 (xsd:date)
dbp:discoverer
  • O’Toole (en)
dbp:discoveryMethod
dbp:eccentricity
  • 0.060000 (xsd:double)
dbp:name
  • HD 154857 c (en)
dbp:period
  • 2.997972E8
  • 2.99808E8
dbp:semiAmplitude
  • >23 (en)
dbp:star
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rdfs:comment
  • HD 154857 c is an extrasolar planet located approximately 224 light-years away in the constellation of Ara, orbiting the star HD 154857. This planet takes about 3470 days (9.5 years) to orbit the star. The first signs of this planet were noticed on 9 February 2007 by O’Toole in Australia using the method Doppler spectroscopy, along with HD 23127 b and HD 159868 b. The orbit had not yet been completely observed, so the values quoted were lower limits. The previously unconstrained orbital period and minimum mass were constrained in January 2014. (en)
  • HD 154857 c是一顆距離地球約209光年的太陽系外行星，位於天壇座，母恆星是HD 154857。該行星的軌道週期3470日（9.5年）。 (zh)
rdfs:label
  • HD 154857 c (en)
  • HD 154857 c (zh)
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  • HD 154857 c (en)
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