HD 60532

HD 60532
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Puppis
Right ascension 07h 34m 03.18084s[1]
Declination –22° 17′ 45.8398″[1]
Apparent magnitude (V) 4.450[2]
Characteristics
Spectral type F6 IV-V[3]
U−B color index +0.07[4]
B−V color index +0.51[4]
Astrometry
Radial velocity (Rv)60.7[2] km/s
Proper motion (μ) RA: –39.87[1] mas/yr
Dec.: 46.84[1] mas/yr
Parallax (π)38.91 ± 0.27[1] mas
Distance83.8 ± 0.6 ly
(25.7 ± 0.2 pc)
Absolute magnitude (MV)2.40[2]
Details
Mass1.44+0.03
−0.1[5] M☉
Radius2.52 R☉
Luminosity8.596 L☉
Surface gravity (log g)4.09[6] cgs
Temperature6,095[5] K
Metallicity [Fe/H]–0.42[5] dex
Rotational velocity (v sin i)8[5] km/s
Age2.7 ± 0.1[5] Gyr
Other designations
108 G. Puppis,[7][8] BD–21° 2007, GC 10134, HIP 36795, HR 2906, Gliese 279, SAO 174009
Database references
SIMBADdata
Exoplanet Archivedata
ARICNSdata
Extrasolar Planets
Encyclopaedia		data

HD 60532 is a white (F-type) main sequence star located approximately 84 light-years away in the constellation of Puppis, taking its primary name from its Henry Draper Catalogue designation. It is calculated to be 1.44 times more massive than the Sun. The star is only 59% as old as our Sun (2.7 Gyr) and has metallicity of only 38% that of our Sun. In 2008, two extrasolar planets were discovered in orbit around it.

Planetary system

In September 2008, two Jupiter-like planets were found orbiting the star.[5] The orbital periods of these two planets appear to be in 3:1 resonance.[9]

The HD 60532 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 3.15 MJ 0.77 201.83 ± 0.14 0.278 ± 0.006 — —
c 7.46 MJ 1.58 607.06 ± 2.1 0.038 ± 0.008 — —

See also

References

  1. 1 2 3 4 5 van Leeuwen, Floor (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752v1Freely accessible, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357 Note: see VizieR catalogue I/311.
  2. 1 2 3 Nordström, B.; et al. (May 2004), "The Geneva-Copenhagen survey of the Solar neighbourhood. Ages, metallicities, and kinematic properties of ˜14 000 F and G dwarfs", Astronomy and Astrophysics, 418: 989–1019, arXiv:astro-ph/0405198Freely accessible, Bibcode:2004A&A...418..989N, doi:10.1051/0004-6361:20035959
  3. ↑ Gray, R. O.; et al. (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/0603770Freely accessible, Bibcode:2006AJ....132..161G, doi:10.1086/504637
  4. 1 2 Johnson, H. L.; Iriarte, B.; Mitchell, R. I.; Wisniewskj, W. Z. (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory, 4 (99), Bibcode:1966CoLPL...4...99J
  5. 1 2 3 4 5 6 Desort, M.; et al. (2008), "Extrasolar planets and brown dwarfs around A-F type stars V. A planetary system found with HARPS around the F6IV-V star HD 60532", Astronomy and Astrophysics, 491 (3): 883–888, arXiv:0809.3862Freely accessible, Bibcode:2008A&A...491..883D, doi:10.1051/0004-6361:200810241web preprint
  6. ↑ Edvardsson, B.; et al. (August 1993), "The Chemical Evolution of the Galactic Disk - Part One - Analysis and Results", Astronomy and Astrophysics, 275 (1): 101, Bibcode:1993A&A...275..101E
  7. ↑ Gould, Benjamin Apthorp (1879), Uranometria Argentina: brightness and position of every fixed star, down to the seventh magnitude, within one hundred degrees of the South Pole, 1, Observatorio Nacional Argentino, p. 172
  8. ↑ Gould, Benjamin Apthorp; Pilcher, Frederick, Uranometria Argentina, Revised, retrieved 2011-12-08
  9. ↑ Laskar, J.; Correia, A. C. M. (2009), "HD60532, a planetary system in a 3:1 mean motion resonance" (PDF), Astronomy & Astrophysics Letters, 496 (2): L5–L8, arXiv:0902.0667Freely accessible, Bibcode:2009A&A...496L...5L, doi:10.1051/0004-6361/200911689

Coordinates: 07h 34m 03.1805s, −22° 17′ 45.841″

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