命神星（Fortuna）是第19颗被人类发现的小行星，于1852年8月22日发现。命神星的直径为225.0千米，质量为1.2×10千克，公转周期为1393.378天。

命神星的名字来自罗马神话中的命运女神福尔图娜。

^JPL Small-Body Database Browser: 19 Fortuna. 2008-08-21 last 奥林匹克广播服务公司[2008-11-11].

^Jim Baer.Recent Asteroid 质量 Determinations. Personal Website. 2008[2008-11-27].

^Storrs, Alex; Weiss, B.; Zellner, B.; et al.Imaging Observations of Asteroids with Hubble Space Telescope. Icarus. 1998,137: 260–268[2005-01-15].Bibcode:1999Icar..137..260S.doi:10.1006/icar.1999.6047.

^Baer, James;Steven R. Chesley.Astrometric masses of 21 asteroids, and an integrated asteroid ephemeris(PDF). Celestial Mechanics and Dynamical Astronomy (Springer Science+Business Media B.V. 2007). 2008,100(2008): 27–42[2008-11-11].Bibcode:2008CeMDA.100...27B.doi:10.1007/s10569-007-9103-8.

^AstDys (19) Fortuna Ephemerides. Department of 数学, University of Pisa, Italy.[2010-06-27].

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^JPL Small-Body Database Browser: 19 Fortuna. 2008-08-21 last 奥林匹克广播服务公司[2008-11-11].

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^Jim Baer.Recent Asteroid 质量 Determinations. Personal Website. 2008[2008-11-27].

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