HD 33636

Starbox begin
name = HD 33636 A / BStarbox observe
epoch = J2000.0
constell = Orion
ra = 05h 11m 46.4490s
dec = +04º 24' 12.7418″Starbox character
class = G0VH-03 / M6V
b-v = 0.588 ± 0.016 / ?cite journal |url=http://adsabs.harvard.edu/abs/2003A%26A...410.1039P |author=Perrier et al. |title=The ELODIE survey for northern extra-solar planets. I. Six new extra-solar planet candidates |journal=Astronomy and Astrophysics |eprint= |class=astro-ph |year=2003 |volume=410 |issue= |pages=1039–1049 |accessdate=December 21 |accessyear=2007 |doi=10.1051/0004-6361:20031340]
u-b =
variable = Starbox astrometry
radial_v =
prop_mo_ra =
prop_mo_dec =
parallax = 35.6cite journal |url=http://adsabs.harvard.edu/abs/2007AJ....134..749B |author=Bean et al. |title=The Mass of the Candidate Exoplanet Companion to HD 33636 from Hubble Space Telescope Astrometry and High-Precision Radial Velocities |journal=The Astronomical Journal |eprint= |class=astro-ph |year=2007 |volume=134 |issue=2 |pages=749–758 |accessdate=December 21 |accessyear=2007 |doi=10.1086/519956]
p_error = 0.2
appmag_v = 7.06 / ?
absmag_v = 4.77 / ?
dist_ly = 93.6
dist_pc = 28.7Starbox visbin
name = HD 33636 B
axis_unitless = 14.2 ± 0.2 AU
eccentricity =
period = 2117.3 ± 0.8
inclination = 4.1 ± 0.1
ang_dist = 14.2 ± 0.2
long_peri = 339.5 ± 1.4
t_peri = 2451205.8 ± 6.4
semi-amp = 11420 ± 600 Starbox detail
mass = 1.12±0.03 [Santos 2003] / 0.135±0.01
radius = 1.01 / 0.2?Main Sequence lookup based on 0.135 mass.]
luminosity = 1.07 / 0.002?
temperature = 5990 ± 50 / ?
metal =
rotation =
age =
names = BD+04 858, HIP 24205, SAO 112506

HD 33636 is a binary system located in Orion constellation. The visible member HD 33636 A is a 7^th magnitude yellow main-sequence star. It is located at a distance of 93.6 light years from our home planet. It has Fe/H of −0.05 +/- 0.07.

A companion was discovered in 2003 with a minimum mass of planet size.cite journal | url=http://www.journals.uchicago.edu/doi/full/10.1086/338768 | author=Vogt "et al." | title=Ten Low-Mass Companions from the Keck Precision Velocity Survey | journal=The Astrophysical Journal | volume=568 | issue=1 |year=2002 | pages=352 – 362 | doi=10.1086/338768 ] This was ascertained to be a tiny star in 2007, making it HD 33636 B.

HD 33636 B

HD 33636 B was discovered in 2003 by Perrier "et al." who used ELODIE spectrometer in France. With this method it showed a minimum mass of 9.28 Jupiter mass, and was initially assumed to be a planet and provisionally labelled "HD 33636 b" (lower-case).

In 2007, Bean et al. used the Hubble Space Telescope (HST) and he found that this body has an inclination as little as 4.1 ± 0.1º, which yielded the true mass of 142 Jupiter mass. This is too high to be a planet. It is now classified as an M-dwarf star of spectral type M6V, "HD 33636 B".

This star takes 2117 days or 5.797 years to orbit at the average distance of 3.27 Astronomical Units (AU).

References

*cite journal|url=http://www.journals.uchicago.edu/doi/abs/10.1086/504701 | author=Butler "et al." | title=Catalog of Nearby Exoplanets | journal=The Astrophysical Journal | volume=646 | issue=1 | pages=505 – 522 | year=2006 | doi=10.1086/504701 ( [http://xxx.lanl.gov/abs/astro-ph?papernum=0607493 web Preprint] )

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