CT Chamaeleontis

Starbox begin
name = CT ChamaeleontisStarbox observe
epoch = J2000.0
equinox = J2000.0 (ICRS)
constell = Chamaeleon
ra = RA|11|04|09.131SIMBAD link|CT+Cha|V* CT Cha -- T Tau-type Star, database entry, SIMBAD. Accessed on line October 1, 2008.]
dec = DEC|−76|27|19.30
appmag_v=12.31 to 12.43CT Cha, database entry, [http://www.sai.msu.su/groups/cluster/gcvs/gcvs/iii/iii.dat The combined table of GCVS Vols I-III and NL 67-78 with improved coordinates, General Catalogue of Variable Stars] , Sternberg Astronomical Institute, Moscow, Russia. Accessed on line October 1, 2008.] Starbox character
class = K7
b-v = −0.9
v-r = 0.8
variable = INBStarbox astrometry
radial_v = 15.1 ± 0.5
prop_mo_ra = −21.3 ± 4.6
prop_mo_dec = 6.3 ± 4.5
dist_pc = 165 ± 30
dist_ly = 540 ± 100Starbox detail
age = 0 to 4 × 10⁶ Direct evidence of a sub-stellar companion around CT Cha, T. O. B. Schmidt et al., accepted for publication in "Astronomy and Astrophysics", bibcode|2008arXiv0809.2812S, arXiv|0809.2812.] Starbox catalog
names=CT Cha.Starbox reference
Simbad=CT+Cha

Starbox begin
name = CT Chamaeleontis bStarbox relpos
primary = CT Chamaleontis
epoch = 2006–2007
angdistsec = 2.670
angdistmas =
angdistref =
posang = 300.7
posangref =
projsep = ~440
projsepref = Starbox character
class = M8–L0Starbox detail
mass = 0.016 ± 0.006
radius = 0.23±|0.08|0.06
temperature = 2600 ± 250
luminosity = 0.002
gravity = 3.5
age = 0 to 4 × 10⁶ Starbox catalog
names=CT Cha b.Starbox reference
Simbad=NAME+CT+Cha+b

CT Chamaeleontis (CT Cha) is a T Tauri star in the constellation of Chamaeleon. It has an apparent visual magnitude which varies between 12.31 and 12.43.

In 2006 and 2007, a faint companion was observed 2.7 arcseconds away from CT Chamaeleontis, using the Very Large Telescope at the European Southern Observatory. Since the object shares common proper motion with CT Chamaleontis, it is believed to be physically close to the star, with a projected separation of approximately 440 astronomical units. It is estimated to have a mass of approximately 17 Jupiter masses and is probably a brown dwarf. The companion has been designated "CT Chamaeleontis b". [SIMBAD link|NAME%20CT%20Cha%20b|NAME CT Cha b -- Extra-solar Planet Candidate, database entry, SIMBAD. Accessed on line October 1, 2008.]

References