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 | |
| 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
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]
| 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
References
- 1 2 3 4 5 6 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.
- 1 2 Kashyap, V.L.; Drake, Jeremy J.; Saar, Steven H. (2008). "Extrasolar Giant Planets and X-Ray Activity" (abstract). Astrophysical Journal 687 (2): 1339–1356. arXiv:0807.1308. Bibcode:2008ApJ...687.1339K. doi:10.1086/591922.
- ↑ 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
- "Notes for star HD 66428". The Extrasolar Planets Encyclopaedia. Retrieved 2008-08-20.
Coordinates: 
08h 03m 28.6652s, −01° 09′ 45.752″
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