Epoch J2000 Equinox J2000
|Right ascension||15h 10m 44.74390s |
|Declination||–61° 25′ 20.3469″ |
|Apparent magnitude (V)||6.29±0.01 |
|Spectral type||G0 V Fe+0.4  or G3 IV |
|B−V color index||0.623±0.003 |
|Radial velocity (Rv)||43.50±0.74  km/s|
|Proper motion (μ)||
Dec.: −12.184  mas/ yr
|Parallax (π)||41.59 ± 0.23  mas|
|Distance||78.4 ± 0.4
(24.0 ± 0.1 pc)
|Absolute magnitude (MV)||4.37 |
|Luminosity||1.63  L☉|
|Surface gravity (log g)||4.35±0.04 cgs|
|Metallicity [Fe/H]||+0.14±0.01 dex|
|Rotational velocity (v sin i)||3.21  km/s|
|Age||1.75  Gyr|
HD 134060, also known by its Gould designation of 38 G. Circini, is a star in the southern constellation of Circinus. It is near the lower limit of stars visible to the naked eye, having an apparent visual magnitude of 6.29.  The distance to HD 134060, as determined using an annual parallax shift measurement of 41.59 mas,  is 78.4 light years. It is moving further away with a heliocentric radial velocity of 43.5 km/s, having come within 34.6 ly some 439,000 years ago. 
During the NStars project, Grey et al. (2006) found a stellar classification of G0 V Fe+0.4 for this star,  matching a Sun-like G-type main-sequence star with an overabundance of iron in its outer atmosphere. However, an older classification of G3 IV  is still used, which would suggest it is instead a more evolved subgiant star. HD 134060 has an estimated 1.07 times the mass of the Sun and 1.15 times the Sun's radius.  It is radiating 1.63  times the Sun's luminosity from its photosphere at an effective temperature of about 5,965 K. 
Based upon an 8-year survey using the HARPS spectrograph at La Silla Observatory, in 2011 the detection of a pair of planets orbiting this star were announced. The inner planet, HD 134060 b, is in a tight, eccentric orbit around the star with a period of just over three days. The second object, HD 134060 c, has a more leisurely period of around 3.2 years and a high orbital eccentricity. 
The star was observed for a few hours by the Spitzer Space Telescope in the hopes of observing a transit by the inner planet, but none was detected.  HD 134060 displays an infrared excess at a wavelength of 18μm, making it a warm debris disk candidate. 
(in order from star)
|b||0.0351±0.0021 MJ||0.0441±0.0010 ||3.269555+0.000092
- Gaia Collaboration; Brown, A. G. A.; Vallenari, A.; Prusti, T.; De Bruijne, J. H. J.; Mignard, F.; Drimmel, R.; et al. (2016), "Gaia Data Release 1. Summary of the astrometric, photometric, and survey properties", Astronomy & Astrophysics, 595: A2, arXiv: 1609.04172, Bibcode: 2016A&A...595A...2G, doi: 10.1051/0004-6361/201629512, S2CID 1828208.
- Gillon, M.; et al. (May 2017), "The Spitzer search for the transits of HARPS low-mass planets. II. Null results for 19 planets", Astronomy & Astrophysics, 601: 23, arXiv: 1701.01303, Bibcode: 2017A&A...601A.117G, doi: 10.1051/0004-6361/201629270, S2CID 86862862, A117.
- Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (July 2006), "Contributions to the Nearby Stars (NStars) Project: spectroscopy of stars earlier than M0 within 40 pc-The Southern Sample", The Astronomical Journal, 132 (1): 161–170, arXiv: astro-ph/0603770, Bibcode: 2006AJ....132..161G, doi: 10.1086/504637, S2CID 119476992.
- Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971, Bibcode: 2012AstL...38..331A, doi: 10.1134/S1063773712050015, S2CID 119257644.
- Delgado Mena, E.; et al. (April 2015), "Li abundances in F stars: planets, rotation, and Galactic evolution", Astronomy & Astrophysics, 576: 24, arXiv: 1412.4618, Bibcode: 2015A&A...576A..69D, doi: 10.1051/0004-6361/201425433, S2CID 56051637, A69.
- "HD 134060". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2018-07-12.
- Mugrauer, M.; Ginski, C. (12 May 2015). "High-contrast imaging search for stellar and substellar companions of exoplanet host stars". Monthly Notices of the Royal Astronomical Society. 450 (3): 3127–3136. doi: 10.1093/mnras/stv771. Retrieved 19 June 2020.
- Mayor, M.; et al. (September 2011), "The HARPS search for southern extra-solar planets XXXIV. Occurrence, mass distribution and orbital properties of super-Earths and Neptune-mass planets", arXiv: 1109.2497 [ astro-ph.EP]
- Ishihara, Daisuke; et al. (May 2017), "Faint warm debris disks around nearby bright stars explored by AKARI and IRSF", Astronomy & Astrophysics, 601: 18, arXiv: 1608.04480, Bibcode: 2017A&A...601A..72I, doi: 10.1051/0004-6361/201526215, S2CID 55234482, A72.
- "Archived copy". Archived from the original on 2014-02-02. Retrieved 2013-01-31.CS1 maint: archived copy as title ( link)