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.

HD 130322
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Virgo
Right ascension 14h 47m 32.7266s[1]
Declination −00° 16′ 53.3059″[1]
Apparent magnitude (V) 8.05
Spectral type K0V
Proper motion (μ) RA: −130.798±0.106[1] mas/yr
Dec.: −140.365±0.118[1] mas/yr
Parallax (π)31.3423 ± 0.0711 mas[1]
Distance104.1 ± 0.2 ly
(31.91 ± 0.07 pc)
Mass0.92±0.03 M
Radius0.85±0.04 R
Surface gravity (log g)4.52±0.06 cgs
Temperature5387±44 K
Rotation26.53±0.70 d
Rotational velocity (v sin i)0.5±0.5 km/s
Age10[citation needed] Gyr
Other designations
BD+00 3243, HIP 72339, LTT 5873, NLTT 38386[3]
Database references
SIMBADThe star
planet b
Exoplanet Archivedata

The star HD 130322 is named Mönch. The name was selected in the NameExoWorlds campaign by Switzerland, during the 100th anniversary of the IAU. Mönch is one of the prominent peaks of the Bernese Alps.[4][5]


In 2000, an extrasolar planet was discovered orbiting the star.[6]

The star rotates at an inclination of 76+14
degrees relative to Earth.[7] It has been assumed that the planet shares that inclination.[8] But several "hot Jupiters" are known to be oblique relative to the stellar axis.[9]

The HD 130322 planetary system[2][10]
(in order from star)
Mass Semimajor axis
Orbital period
Eccentricity Inclination Radius
b (Eiger) >1.089 ± 0.98 MJ 0.0910 ± 0.053 10.70871±0.00018 0.029±0.016

See alsoEdit


  1. ^ a b c d e Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics. 616. A1. arXiv:1804.09365. Bibcode:2018A&A...616A...1G. doi:10.1051/0004-6361/201833051. Gaia DR2 record for this source at VizieR.
  2. ^ a b 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. S2CID 12657851.
  3. ^ "HD 130322". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2019-01-16.
  4. ^ "Approved names". NameExoworlds. Retrieved 2020-01-02.
  5. ^ "International Astronomical Union | IAU". www.iau.org. Retrieved 2020-01-02.
  6. ^ 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. Archived from the original on 2012-02-04. Retrieved 2006-07-02.
  7. ^ 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, S2CID 6708869
  8. ^ "hd_130322_b". Extrasolar Planet Encyclopaedia. Retrieved November 12, 2012.
  9. ^ Roberto Sanchis-Ojeda; Josh N. Winn; Daniel C. Fabrycky (2012). "Starspots and spin-orbit alignment for Kepler cool host stars". Astronomische Nachrichten. 334 (1–2): 180–183. arXiv:1211.2002. Bibcode:2013AN....334..180S. doi:10.1002/asna.201211765. S2CID 38743202.
  10. ^ 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. S2CID 119067572.

External linksEdit

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