HD 154857 c

Planetbox begin
name = HD 154857 c Planetbox star
star = HD 154857
constell = Ara
RA = RA|17|11|15.7219
DEC = DEC|–56|40|50.865
dist_ly = 223.55
dist_pc = 68.54
class = G5VPlanetbox orbit
semimajor =
semimajor_gigameter =
periastron =
periastron_gigameter =
apastron =
apastron_gigameter =
eccentricity = 0.25
period = 1900
period_year = 5.2
period_megasecond = 160
speed =
ang_dist =
long_peri =
t_peri =
semi-amp = Planetbox character
mass =
radius =
density =
gravity_earth =
gravity =
temperature = Planetbox discovery
discovery_date = 9 February 2007
discoverers = O’Toole
discovery_method = Doppler spectroscopy
discovery_site = flag|Australia
discovery_status = Published Planetbox catalog
names = HIP 84069 c, SAO 244491 c

HD 154857 c is an unconfirmed extrasolar planet located approximately 224 light-years away in the constellation of Ara, orbiting the star HD 187123. This planet with unknown mass takes about 1900 days or 5.2 years to orbit at unknown distance from the star. It was discovered on 9 February 2007 by O’Toole in Australia using the method Doppler spectroscopy, along with HD 23127 b and HD 159868 b.

ee also

* HD 154857 b
* List of unconfirmed exoplanets

References

*cite journal | url=http://www.journals.uchicago.edu/doi/abs/10.1086/513563 | author=O'Toole "et al." | title=New Planets around Three G Dwarfs | journal=The Astrophysical Journal | volume=660 | issue=2 | year=2007 | pages=1636 – 1641 | doi=10.1086/513563 ( [http://xxx.lanl.gov/abs/astro-ph/0702213 web Preprint] )

External links

*
*