Astronomy:590 Tomyris

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590 Tomyris
590Tomyris (Lightcurve Inversion).png
A three-dimensional model of 590 Tomyris based on its light curve
Discovery
Discovered byMax Wolf
Discovery siteHeidelberg
Discovery date4 March 1906
Designations
(590) Tomyris
Pronunciation/ˈtɒmɪrɪs/[1]
1906 TO
Orbital characteristics[2]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc110.12 yr (40221 d)
|{{{apsis}}}|helion}}3.2395 astronomical unit|AU (484.62 Gm)
|{{{apsis}}}|helion}}2.7564 AU (412.35 Gm)
2.9979 AU (448.48 Gm)
Eccentricity0.080570
Orbital period5.19 yr (1896.0 d)
Mean anomaly166.534°
Mean motion0° 11m 23.532s / day
Inclination11.174°
Longitude of ascending node106.157°
339.791°
Physical characteristics
Mean radius19.935±0.7 km
Rotation period5.562 h (0.2318 d)
Geometric albedo0.1218±0.009
Absolute magnitude (H)9.90


Tomyris (minor planet designation: 590 Tomyris) is a minor planet orbiting the Sun. Its name derives from the Massagetean (ancient Eastern Iranian) ruler Tomyris, and may have been inspired by the asteroid's provisional designation 1906 TO.

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