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ζ Microscopii, Latinised as Zeta Microscopii, is a solitary, yellow-white hued star in the southern constellation of Microscopium. It is faintly visible to the naked eye with an apparent visual magnitude of +5.31. Based upon an annual parallax shift of 28.27 mas as seen from the Earth, it is 115 light years from the Sun. The star is moving away from the Sun with a radial velocity of +4.6 km/s.

This is an F-type main-sequence star with a stellar classification of F5 V. This indicates that, at the age of 2.2 billion years, it is still generating energy through hydrogen fusion at its core. It is radiating 7.5 times the Sun's luminosity from its photosphere at an effective temperature of 6,471 K. The star has an estimated 1.4 times the mass of the Sun and is spinning with a moderately high projected rotational velocity of 44.4 km/s.

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.
2. ^ Corben, P. M.; Stoy, R. H. (1968), "Photoelectric Magnitudes and Colours for Bright Southern Stars", Monthly Notes of the Astronomical Society of Southern Africa, 27: 11, Bibcode:1968MNSSA..27...11C.
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/0603770, Bibcode:2006AJ....132..161G, doi:10.1086/504637, S2CID 119476992.
4. ^ Wielen, R.; et al. (1999), "Sixth Catalogue of Fundamental Stars (FK6). Part I. Basic fundamental stars with direct solutions", Veroeffentlichungen des Astronomischen Rechen-Instituts Heidelberg, 35, Astronomisches Rechen-Institut Heidelberg: 1, Bibcode:1999VeARI..35....1W.
5. ^ Ammler-von Eiff, Matthias; Reiners, Ansgar (June 2012), "New measurements of rotation and differential rotation in A-F stars: are there two populations of differentially rotating stars?", Astronomy & Astrophysics, 542: A116, arXiv:1204.2459, Bibcode:2012A&A...542A.116A, doi:10.1051/0004-6361/201118724, S2CID 53666672.
6. ^ David, Trevor J.; Hillenbrand, Lynne A. (2015), "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets", The Astrophysical Journal, 804 (2): 146, arXiv:1501.03154, Bibcode:2015ApJ...804..146D, doi:10.1088/0004-637X/804/2/146, S2CID 33401607.
7. ^ McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x, S2CID 118665352.
8. "zet Mic". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2017-08-12.
9. Eggleton, P. P.; Tokovinin, A. A. (September 2008), "A catalogue of multiplicity among bright stellar systems", Monthly Notices of the Royal Astronomical Society, 389 (2): 869–879, arXiv:0806.2878, Bibcode:2008MNRAS.389..869E, doi:10.1111/j.1365-2966.2008.13596.x, S2CID 14878976.

v t e Constellation of Microscopium
List of stars in Microscopium Microscopium in Chinese astronomy
Stars	Bayer α β γ δ ε ζ η θ θ ι ν Flamsteed 2 PsA 3 PsA Variable R S T U AT AU AV AX BO DD HR 7817 7893 7909 7933 7971 7987 8046 8100 8104 8108 8200 8202 HD 202628 Other PSR J2124−3358 WASP-7
Exoplanets WASP-7b
Galaxies	NGC 6925 7012 7057 7060 Other ESO 286-19
Category

• F-type main-sequence stars
• Microscopium
• Bayer objects
• Durchmusterung objects
• Henry Draper Catalogue objects
• Hipparcos objects
• Bright Star Catalogue objects