HD 181433

Starbox begin
name = HD 181433Starbox observe
epoch = J2000.0
constell = Pavo
ra = RA|19|25|09.5663cite web|url=http://simbad.u-strasbg.fr/simbad/sim-id?protocol=html&Ident=hd+181433&NbIdent=1&Radius=10&Radius.unit=arcmin&submit=submit+id|title=NLTT 47732 -- High proper-motion star|work=SIMBAD|accessdate=2008-10-02]
dec = DEC|-66|28|07.671
appmag_v = 8.38Starbox character
class = K5Vcite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-S?HIP%2095467|title=HIP 95152|work=The Hipparcos and Tycho Catalogues: The Hipparcos Main Catalogue|year=1997|author=ESA|accessdate=2008-10-02]
r-i =
v-r =
b-v = 1.04
u-b =
variable = Starbox astrometry
radial_v = +37.9
prop_mo_ra = –230.60cite web|url=http://webviz.u-strasbg.fr/viz-bin/VizieR-5?-out.add=.&-source=I/311/hip2&recno=95152|title=HIP 95152|author=van Leeuwen, F.|year=2007|work=Hipparcos, the New Reduction: The Astrometric Catalogue|accessdate=2008-10-02]
prop_mo_dec = 235.37
parallax = 37.37
p_error = 1.13
parallax_footnote =
space_v_u =
space_v_v =
space_v_w =
absmag_v = 6.24Calculated from apparent magnitude and parallax: $extstyle\; M\_\{mathrm\{V$ = m_{mathrm{V - 5log_{10} left(frac{100}{mathrm{parallax in milliarcseconds ight)] Starbox catalog
names = HIP 95467, Gliese 756.1, SAO 254563Starbox reference
Simbad = HD+181433

HD 181433 is a star located approximately 87 light-years awayCalculated from parallax: $extstyle\; mathrm\{Distance\; in\; parsecs\}=frac\{1000\}\{mathrm\{parallax\; in\; milliarcseconds$] in the constellation of Pavo (the Peacock). According to SIMBAD, it has a stellar classification of K3III-IV, which puts it on the borderline between being a giant star and a subgiant. However this is inconsistent with its luminosity properties: its absolute magnitude is 6.24 which means it is less luminous than our Sun. Its entry in the Hipparcos catalogue lists a spectral type of K5V, classifying it as a dwarf star. As of 2008, two extrasolar planets are thought to be orbiting within the system.cite press release|url=http://www.eso.org/public/outreach/press-rel/pr-2008/pr-19-08.html|title=A Trio of Super-Earths|publisher=ESO|date=2008-06-16|accessdate=2008-10-02] There is currently little information on these planets. The name of this star comes from its identifier in the Henry Draper catalogue.

Planetary system

Orbiting the star are two planets that were discovered in June 2008. The inner planet is a so-called super-Earth. [cite web
url=http://uk.news.yahoo.com/rtrs/20080616/tsc-uk-space-planets-011ccfa.html
title=Astronomers find batch of "Super Earths"
accessdate= 2008-06-16
publisher=BT Yahoo.com] The outer planet is a gas giant at a minimum mass of 72% that of Jupiter. The orbital periods for two planets are 9.37 days for super-Earth, and 1024 days for a gas giant.cite web|url=http://exoplanet.eu/star.php?st=HD+181433|title=Notes for star HD 181433|author=Schneider, J.|work=The Extrasolar Planets Encyclopaedia|accessdate=2008-10-02]

PlanetboxOrbit
exoplanet = b
mass = >0.0238cite web|url=http://exoplanet.eu/planet.php?p1=HD+181433&p2=b|title=Notes for Planet HD 181433 b|work=The Extrasolar Planets Encyclopaedia|author=Schneider, J.|accessdate=2008-10-02]
semimajor = ?
period = 9.37
eccentricity = ?PlanetboxOrbit
exoplanet = c
mass = >0.72cite web|url=http://exoplanet.eu/planet.php?p1=HD+181433&p2=c|title=Notes for Planet HD 181433 c|work=The Extrasolar Planets Encyclopaedia|author=Schneider, J.|accessdate=2008-10-02]
semimajor = ?
period = 1024
eccentricity = ?

Notes

References

External links

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