HD 5388

HD 5388
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Phoenix
Right ascension 00h 55m 11.89s[1]
Declination –47° 24′ 21.5″[1]
Apparent magnitude (V) 6.73[2]
Characteristics
Spectral type F6V[2]
Apparent magnitude (B) 7.73
Apparent magnitude (J) 5.795
Apparent magnitude (H) 5.524
Apparent magnitude (K) 5.441
B−V color index 0.500[2]
Astrometry
Radial velocity (Rv)39.2 km/s
Proper motion (μ) RA: –80.14 ± 0.55[1] mas/yr
Dec.: –178.07 ± 0.49[1] mas/yr
Parallax (π)18.62 ± 0.66[1] mas
Distance175 ± 6 ly
(54 ± 2 pc)
Absolute magnitude (MV)3.10[2]
Details
Mass1.21[2] M☉
Radius1.91[2] R☉
Luminosity4.60[2] L☉
Surface gravity (log g)4.28 ± 0.06[2] cgs
Temperature6297 ± 32[2] K
Metallicity-0.27 ± 0.02[2]
Rotation23 days
Rotational velocity (v sin i)4.2[2] km/s
Age5.5 ± 0.5[3] Gyr
Other designations
78 G. Phoenicis, CD–48°216, CPD-48°109, GC 1100, HIP 4311, LTT 518, NLTT 3057, PPM 305379, SAO 215291
Database references
SIMBADdata
Exoplanet Archivedata
Extrasolar Planets
Encyclopaedia		data

HD 5388 (78 G. Phoenicis[4]) is a 7th magnitude F-type main sequence star located approximately 175 light years away in the constellation Phoenix. This star is larger, hotter, brighter, and more massive than our Sun. Also its metal content is half as much as the Sun. In 2009, a gas giant planet was found in orbit around the star.[2] This was later demonstrated to be a brown dwarf rather than a planet.[5]

The HD 5388 planetary system[2][5]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 69 MJ 1.76 777 ± 4 0.40 ± 0.02 — —

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. 1 2 3 4 5 6 7 8 9 10 11 12 13 Santos, N. C.; et al. (2010). "The HARPS search for southern extrasolar planets XXI. Three new giant planets orbiting the metal-poor stars HD5388, HD181720, and HD190984". Astronomy and Astrophysics. 512. A47. arXiv:0912.3216. Bibcode:2010A&A...512A..47S. doi:10.1051/0004-6361/200913489.
  3. ↑ Bonfanti, A.; et al. (2015). "Revising the ages of planet-hosting stars". Astronomy and Astrophysics. 575. A18. arXiv:1411.4302. Bibcode:2015A&A...575A..18B. doi:10.1051/0004-6361/201424951.
  4. ↑ "Uranometria Argentina". Archived from the original on 2012-02-27. Retrieved 2010-07-16.
  5. 1 2 Sahlmann, J.; et al. (2011). "HD 5388 b is a 69 MJup companion instead of a planet". Astronomy and Astrophysics Letters. 528. L8. arXiv:1102.3372. Bibcode:2011A&A...528L...8S. doi:10.1051/0004-6361/201116533.

Coordinates: 00h 55m 11.8897s, −47° 24′ 21.475″

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