Gliese 588

Gliese 588 is a nearby red dwarf star of spectral type M2.5, located in the constellation Lupus at 19.34 light-years from Earth.[1] It emits a very stable light flux, with no detectable pulsations.[6]

Gliese 588
Observation data
Epoch J2000      Equinox J2000
Constellation Lupus
Right ascension 15h 32m 12.93186s[1]
Declination −41° 16′ 32.1081″[1]
Apparent magnitude (V) 9.311
Characteristics
Spectral type M2.5V[2]
U−B color index +1.14[3]
B−V color index +1.51[3]
Astrometry
Radial velocity (Rv)15.50 km/s
Proper motion (μ) RA: -1176.447[4] mas/yr
Dec.: -1030.9703[4] mas/yr
Parallax (π)168.9965 ± 0.0270[4] mas
Distance19.300 ± 0.003 ly
(5.9173 ± 0.0009 pc)
Absolute magnitude (MV)10.44[5]
Details[6]
Mass0.43±0.05 M☉
Radius0.42±0.03 R☉
Surface gravity (log g)4.82±0.08 cgs
Temperature3555±41 K
Metallicity [Fe/H]0.06±0.08 dex
Other designations
CD-40° 9712, GJ 588, HIP 76074, LHS 397, LTT 6210, TYC 7844-1976-1, 2MASS J15321302-4116314[2]
Database references
SIMBADdata

History of observations

According to Luyten's (1979) (catalogue LHS, as well as NLTT), this object was discovered by Innes.[7][8] In 1903–1927 Innes was the director of the Union Observatory (UO), South Africa.

However, in the Ci 20 catalogue (see number 934) this star was designated as "CD -40 7021", not "UO".[9] This may indicate that GJ 588 was first catalogued earlier, in the Cordoba Durchmusterung by John M. Thome in 1894.[10][11] Note: the real CD designation of Gliese 588 is "CD-40 9712",[12] not "CD -40 7021":[9] GJ 588 has a RA of 15 hours, but the real CD -40 7021 has a RA of 11 hours.[13][10]

Planetary system

On 11 June 2019 two planets were detected by radial velocity around Gliese 588 among other 118 planets around M dwarf stars.[14]

The Gliese 588 planetary system
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b (unconfirmed) 2.4+1.0
−0.9 M🜨		 0.049±0.005 5.8084+0.0016
−0.0018		 0.04+0.25
−0.04		 — —
c (unconfirmed) 10.3+6.9
−4.9 M🜨		 0.530+0.048
−0.054		 206.0+2.0
−3.3		 0.06+0.02
−0.06		 — —

References
  1. 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. S2CID 18759600. Vizier catalog entry
  2. "GJ 588". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 25 December 2016.
  3. Mermilliod, J.-C. (1986). "Compilation of Eggen's UBV data, transformed to UBV (unpublished)". Catalogue of Eggen's UBV Data. Bibcode:1986EgUBV........0M.
  4. Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv:2012.01533. Bibcode:2021A&A...649A...1G. doi:10.1051/0004-6361/202039657. S2CID 227254300. Gaia EDR3 record for this source at VizieR.
  5. "The One Hundred Nearest Star Systems". 2012. Retrieved 25 December 2016.
  6. Berdiñas, Z. M.; Rodríguez-López, C.; Amado, P. J.; Anglada-Escudé, G.; Barnes, J. R.; MacDonald, J.; Zechmeister, M.; Sarmiento, L. F. (2017), "High-cadence spectroscopy of M-dwarfs – II. Searching for stellar pulsations with HARPS", Monthly Notices of the Royal Astronomical Society, 469 (4): 4268–4282, arXiv:1705.04690, doi:10.1093/mnras/stx1140
  7. Luyten, Willem Jacob (1979). "LHS 397". LHS Catalogue, 2nd Edition.
  8. Kirkpatrick, J. Davy; Gelino, Christopher R.; Cushing, Michael C.; Mace, Gregory N.; Griffith, Roger L.; Skrutskie, Michael F.; Marsh, Kenneth A.; Wright, Edward L.; Eisenhardt, Peter R.; McLean, Ian S.; Mainzer, Amy K.; Burgasser, Adam J.; Tinney, Chris G.; Parker, Stephen; Salter, Graeme (2012). "Further Defining Spectral Type "Y" and Exploring the Low-mass End of the Field Brown Dwarf Mass Function". The Astrophysical Journal. 753 (2): 156. arXiv:1205.2122. Bibcode:2012ApJ...753..156K. doi:10.1088/0004-637X/753/2/156. S2CID 119279752.
  9. Porter, J. G.; Yowell, E. J.; Smith, E. S. (1930). "A catalogue of 1474 stars with proper motion exceeding four-tenths year". Publications of the Cincinnati Observatory. 20: 1–32. Bibcode:1930PCinO..20....1P. Page 21 (Ci 20 934).
  10. Thome, J. M. (1894). "Cordoba Durchmusterung declination -32 to -42". Resultados del Observatorio Nacional Argentino. 17: 1–538. Bibcode:1894RNAO...17....1T. Page 468 (CD -40 9712); page 459 (CD -40 7021)
  11. Dictionary of Nomenclature of Celestial Objects. CD entry. SIMBAD. Centre de Données astronomiques de Strasbourg.
  12. Luyten, Willem Jacob (1979). "NLTT 40449". NLTT Catalogue.
  13. Thome, John Macon (1892–1932). "CD -40 7021". Cordoba Durchmusterung.
  14. Barnes, J. R.; Kiraga, M.; Diaz, M.; Berdiñas, Z.; Jenkins, J. S.; Keiser, S.; Thompson, I.; Crane, J. D.; Shectman, S. A. (11 June 2019). "Frequency of planets orbiting M dwarfs in the Solar neighbourhood". arXiv:1906.04644v1 [astro-ph.EP].
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