HD 66428

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HD 66428
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Monoceros
Right ascension 08h 03m 28.6652s[1]
Declination −01° 09′ 45.752″[1]
Apparent magnitude (V) 8.25[1]
Distance 179.3 ± 12.4 ly
(55.0 ± 3.8 pc)
Spectral type G5 [2]
Other designations
BD–00°1891, HIP 39417, LTT 3038, SAO 135426
Database references
SIMBAD data

HD 66428 is a G-type main sequence star located approximately 179 light-years away in the constellation of Monoceros. This star is similar to our Sun with an apparent magnitude of 8.25, an effective temperature of 5705 ± 27 K and a solar luminosity 1.28. Its absolute magnitude is 11.1 while its U-V color index is 0.71. It is considered an inactive star and it is metal-rich ([Fe/H] = 0.310).[1][2][3] This star has a precise mass of 1.14552 solar masses. This precision comes from the Corot mission that measured asteroseismology.

Planetary system[edit]

In July 2006, a planet HD 66428 b was found by Paul Butler using the radial velocity method. The >2.82 MJ planet orbits at 3.18 AU away from the star.[1]

The HD 66428 planetary system[1]
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b >2.82 ± 0.27 MJ 3.18 ± 0.19 1973 ± 31 0.465 ± 0.030

See also[edit]

References[edit]

  1. ^ a b c d e f Butler, R. P. et al. (2006). "Catalog of Nearby Exoplanets". The Astrophysical Journal 646 (1): 505–522. arXiv:astro-ph/0607493. Bibcode:2006ApJ...646..505B. doi:10.1086/504701. 
  2. ^ a b Kashyap, V.L. et al.'; Drake, Jeremy J.; Saar, Steven H. (2008). "Extrasolar Giant Planets and X-Ray Activity" (abstact). Astrophysical Journal 687 (2): 1339–1356. arXiv:0807.1308. Bibcode:2008ApJ...687.1339K. doi:10.1086/591922. 
  3. ^ Sousa, S.G. et al. (2008). "Spectroscopic parameters for 451 stars in the HARPS GTO planet search program". Astronomy and Astrophysics 487: 373–381. arXiv:0805.4826. Bibcode:2008A&A...487..373S. doi:10.1051/0004-6361:200809698. 

External links[edit]

Coordinates: Sky map 08h 03m 28.6652s, −01° 09′ 45.752″