HD 130322

HD 130322
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Virgo
Right ascension 14h 47m 32.727s[1]
Declination −00° 16′ 53.32″[1]
Apparent magnitude (V) 8.05
Characteristics
Spectral type K0V
Astrometry
Proper motion (μ) RA: −129.67±0.99[1] mas/yr
Dec.: −141.57±1.24[1] mas/yr
Parallax (π)31.54 ± 1.18[1] mas
Distance103 ± 4 ly
(32 ± 1 pc)
Other designations
BD+00°3243, HIP 72339, LTT 5873, NLTT 38386
Database references
SIMBADThe star
planet b
Exoplanet Archivedata

HD 130322 is an 8th magnitude star in the constellation of Virgo. It is an orange dwarf, a type of star somewhat dimmer and cooler than our Sun. Spectral type of the star is K0V. It can only be seen with binoculars or telescope. Being almost exactly on the celestial equator the star is visible everywhere in the world except for the North Pole.

System

In 2000, an extrasolar planet was discovered orbiting the star.[2]

The star rotates at an inclination of 76+14
−42 degrees relative to Earth.[3] It has been assumed that the planet shares that inclination.[4] But several "hot Jupiters" are known to be oblique relative to the stellar axis.[5]

The HD 130322 planetary system[6][7]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b >1.089 ± 0.98 MJ 0.0910 ± 0.053 10.70871±0.00018 0.029±0.016 — —

See also

References

  1. 1 2 3 4 5 van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Vizier catalog entry
  2. ↑ Udry, S.; et al. (2000). "The CORALIE survey for southern extra-solar planets II. The short-period planetary companions to HD 75289 and HD 130322". Astronomy and Astrophysics. 356 (2): 590–598. Bibcode:2000A&A...356..590U.
  3. ↑ Simpson, E. K.; et al. (November 2010), "Rotation periods of exoplanet host stars", Monthly Notices of the Royal Astronomical Society, 408 (3): 1666–1679, arXiv:1006.4121, Bibcode:2010MNRAS.408.1666S, doi:10.1111/j.1365-2966.2010.17230.x
  4. ↑ "hd_130322_b". Extrasolar Planet Encyclopaedia. Retrieved November 12, 2012.
  5. ↑ Roberto Sanchis-Ojeda; Josh N. Winn; Daniel C. Fabrycky (2012). "Starspots and spin-orbit alignment for Kepler cool host stars". arXiv:1211.2002. Bibcode:2013AN....334..180S. doi:10.1002/asna.201211765.
  6. ↑ Hinkel, Natalie R.; et al. (2015). "Refined Properties of the Hd 130322 Planetary System". The Astrophysical Journal. 803 (1). 8. arXiv:1502.03441. Bibcode:2015ApJ...803....8H. doi:10.1088/0004-637X/803/1/8.
  7. ↑ 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.

Coordinates: 14h 47m 32.7269s, −00° 16′ 53.314″


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