58534 Logos

58534 Logos (/ˈloʊɡɒs/ LOH-goss or /ˈlɒɡɒs/ LOG-oss; or as in Greek: λόγος) is a small Kuiper-belt object, more specifically a cubewano, notable for having a comparatively large satellite named Zoe. For a small KBO, about 80 km in diameter, it has a very high albedo. The system mass is 4.58 ± 0.07×10¹⁷ kg.

In the Gnostic tradition, Logos and Zoe are a paired emanation of the deity, and part of its creation myth.†

Zoe

Logos is a binary with the components of comparable size orbiting the barycentre on a moderately elliptical orbit.

Logos' companion was discovered on 17 November 2001 from Hubble Space Telescope observations by K. S. Noll, D. C. Stephens, W. M. Grundy, J. Spencer, R. L. Millis]], M. W. Buie, D. Cruikshank, S. C. Tegler, and W. Romanishin and announced on 11 February 2002.

After the discovery, it received the provisional designation S/2001 (58534) 1. Once confirmed it was officially named (58534) Logos I Zoe (/ˈzoʊ.iː/; from Greek: Ζωή). It orbits Logos with a semi-major axis of 8217 ± 42 km in 309.9 ± 0.2 d with an eccentricity of 0.546 ± 0.008. Its estimated diameter is 66 km, and mass (0.15 ± 0.02)×10¹⁸ kg.