HD 24040

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Star
HD 24040
AladinLite
Observation
dates equinox :  J2000.0 , epoch : J2000.0
Constellation bull
Right ascension 03 h 50 m 22.97 s
declination + 17 ° 28 ′ 34.9 ″
Apparent brightness 7.5 likes
Typing
Spectral class G0
Astrometry
Radial velocity (−9.7 ± 0.1) km / s
parallax (21.46 ± 0.75)  mas
distance (152 ± 5)  ly
(46.6 ± 1.6)  pc  
Visual absolute brightness M vis +4.16 mag
Proper movement 
Rec. Share: (113.79 ± 0.79)  mas / a
Dec. portion: (−252.18 ± 0.67)  mas / a
Physical Properties
Dimensions approx. 1.2  M ☉
Effective temperature approx. 5850  K
Metallicity [Fe / H] approx. +0.21
Age approx. 7 · 10 9  a
Other names
and catalog entries
Bonn survey BD + 17 ° 638
Henry Draper Catalog HD 24040 [1]
Hipparcos catalog HIP 17960 [2]
SAO catalog SAO 93630 [3]
Tycho catalog TYC 1252-844-1 [4]Template: Infobox star / maintenance / specification of the TYC catalog
annotation
  1. ↑ Calculated from apparent brightness and distance.

HD 24040 is a about 152  light years distant star of spectral type G0 in the constellation Taurus . It has an apparent magnitude of 7.5 mag and is orbited by a substellar companion with a minimum mass below 10 Jupiter's masses.

Spectroscopic companion

HD 24040 is orbited by the substellar companion (HD 24040 b), for which a period of 3400  d and a mass of at least 4 Jupiter's were determined using the radial velocity method . The companion could therefore be an exoplanet . The semi-major axis would be about 8 astronomical units , the eccentricity about 0.068. The companion is considered a potential gas planet due to its high mass .

Web links

Individual evidence

  1. ↑ a b c Hipparcos catalog (ESA 1997)
  2. ↑ Pulkovo radial velocities for 35493 HIP stars
  3. ↑ a b c Hipparcos, the New Reduction (van Leeuwen, 2007)