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58534 Logos, or as a binary system (58534) Logos-Zoe,[7] is a trans-Neptunian object and binary system from the classical Kuiper belt, approximately 77 kilometers (48 miles) in diameter. The bright cubewano belonged to the cold population and has a 66-kilometer sized companion named Zoe.[6] The system mass is (4.58±0.07)×1017 kg.[7]

58534 Logos
Logos and its companion Zoe imaged by the Hubble Space Telescope in 2004
Discovery
Discovered byMauna Kea Obs. (team disc.)
Discovery siteMauna Kea Obs.
Discovery date4 February 1997
Designations
MPC designation
(58534) Logos
Pronunciation/ˈloʊɡɒs/ or /ˈlɒɡɒs/
Named after
Logos [1]
(Aeon in Ptolemy Gnostics)
Alternative designations
1997 CQ29
Minor planet category
TNO [1] · cubewano [2]
cold [3]
AdjectivesLogian /ˈlɒdʒiən/[4]
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 3
Observation arc5582 days (15.28 yr)
Aphelion51.153 AU (7.6524 Tm)
Perihelion39.945 AU (5.9757 Tm)
Semi-major axis
45.549 AU (6.8140 Tm)
Eccentricity0.12304
Orbital period (sidereal)
307.42 yr (112284 d)
Mean anomaly
56.495°
Mean motion
0° 0m 11.542s / day
Inclination2.8946°
Longitude of ascending node
132.491°
Argument of perihelion
339.21°
Known satellitesZoe (est. D: 66 km)[5]
Physical characteristics
Mean diameter
77±18 km[6]
Mass2.7×1017 kg
Mean density
1.0 g/cm3
Geometric albedo
0.39 ± 0.17[6]
Absolute magnitude (H)
6.6[1]

    In the Gnostic tradition, Logos and Zoe are a paired emanation of the deity, and part of its creation myth.[1]


    Zoe


    Zoe
    Two bodies with similar mass orbiting around a common barycenter (red cross) with elliptic orbits. The interaction of Logos and Zoe is similar to this.
    Discovery
    Discovered byKeith S. Noll et al.
    Discovery date17 November 2001
    Designations
    Pronunciation/ˈzoʊ.iː/
    Named after
    		Zoe (Ζωή)
    Alternative designations
    		(58534) Logos I Zoe
    AdjectivesZoean /zoʊˈiːən/)
    Orbital characteristics[7]
    Semi-major axis
    		8217 km
    Eccentricity0.546
    Orbital period (sidereal)
    		309.9 d
    Satellite ofLogos
    Physical characteristics[5]
    Dimensions66 km
    Mass(0.15±0.02)×1018 kg

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

      Logos' companion, Zoe, was discovered on 17 November 2001 from Hubble Space Telescope observations by K. S. Noll, D. C. Stephens, W. M. Grundy, J. Spencer, Robert Millis, Marc Buie, Dale 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. It orbits Logos with a semi-major axis of 8217 km in 309.9 days with an eccentricity of 0.546.[7] Its estimated diameter is 66 km,[5] and mass (0.15 ± 0.02)×1018 kg.


      Orbit


      A 10-million-year integration of the orbit shows that it is a Classical Kuiper belt object that does not get closer to the Sun than 38.8 AU (5.80 billion km) or further than 52.1 AU.[2]

      Orbit of Logos (grey object) compared with Pluto (orange) and Neptune (blue)
      Orbit of Logos (grey object) compared with Pluto (orange) and Neptune (blue)

      References


      1. "58534 Logos (1997 CQ29)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 April 2016.
      2. Marc W. Buie (31 May 2003). "Orbit Fit and Astrometric record for 58534". SwRI (Space Science Department).
      3. Brown, Mike. "How many dwarf planets are there in the Solar System". Retrieved 17 February 2018.
      4. "Logian". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
      5. Wm. Robert Johnston (4 March 2007). "(58534) Logos and Zoe". Johnston's Archive.
      6. Grundy, W. M; Noll, K. S.; Stephens, D. C. (2005). "Diverse albedos of small trans-neptunian objects". Icarus. 176 (1): 184–191. arXiv:astro-ph/0502229. Bibcode:2005Icar..176..184G. doi:10.1016/j.icarus.2005.01.007. S2CID 118866288.
      7. Grundy, W. M.; Noll, K. S.; Nimmo, F.; Roe, H. G.; Buie, M. W.; Porter, S. B.; Benecchi, S. D.; Stephens, D. C.; Levison, H. F.; Stansberry, J. A. (2011). "Five new and three improved mutual orbits of transneptunian binaries" (PDF). Icarus. 213 (2): 678. arXiv:1103.2751. Bibcode:2011Icar..213..678G. doi:10.1016/j.icarus.2011.03.012. S2CID 9571163.



      На других языках

      [de] (58534) Logos

      (58534) Logos ist ein Kuipergürtelobjekt, das am 4. Februar 1997 von Chad Trujillo, Jun Chen, David C. Jewitt, Jane X. Luu entdeckt wurde. Es hat einen Durchmesser von 80 km und bildet mit seinem etwa 66 km großen Begleiter Zoe ein Doppelsystem. Logos und Zoe umkreisen die Sonne einmal in 306 Jahren. Logos wurde als Cubewano klassifiziert.
      - [en] 58534 Logos

      [ru] (58534) Логос

      (58534) Логос (лат. Logos) — классический объект пояса Койпера, открытый в 1997 году группой астрономов из обсерватории Мауна-Кеа. 14 июня 2003 года объект был включён в каталог малых планет под номером 58534[2].


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