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 mas[1] |
| Distance | 83.8 ± 0.6 ly (25.7 ± 0.2 pc) |
| Absolute magnitude (MV) | 2.40[2] |
| Details | |
| Mass | 1.44+0.03 −0.1[5] M☉ |
| Radius | 2.52 R☉ |
| Luminosity | 8.596 L☉ |
| Surface gravity (log g) | 4.09[6] cgs |
| Temperature | 6,095[5] K |
| Metallicity [Fe/H] | –0.42[5] dex |
| Rotational velocity (v sin i) | 8[5] km/s |
| Age | 2.7 ± 0.1[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
| Exoplanet Archive | data |
| ARICNS | 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]
| 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
- ^ a b c d e van Leeuwen, Floor (November 2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv:0708.1752v1, Bibcode:2007A&A...474..653V, doi:10.1051/0004-6361:20078357 Note: see VizieR catalogue I/311.
- ^ a b c 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/0405198, Bibcode:2004A&A...418..989N, doi:10.1051/0004-6361:20035959
- ^ 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/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637
- ^ a b 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
- ^ a b c d e f 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:0809.3862, Bibcode:2008A&A...491..883D, doi:10.1051/0004-6361:200810241web preprint
- ^ 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
- ^ 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, vol. 1, Observatorio Nacional Argentino, p. 172
- ^ Gould, Benjamin Apthorp; Pilcher, Frederick, Uranometria Argentina, Revised, retrieved 2011-12-08
- ^ 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:0902.0667, Bibcode:2009A&A...496L...5L, doi:10.1051/0004-6361/200911689
External links
- "HD 60532". Exoplanets.
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