58534 Logos#Zoe

{{Infobox planet

| minorplanet=yes

| background=#C2E0FF

| name=58534 Logos

| image=File:logos-zoe-hst.jpg

| image_scale=

| caption=Logos and its companion Zoe imaged by the Hubble Space Telescope in 2004

| discoverer= Mauna Kea Obs. {{small|(team disc.)}}

| discovery_site = Mauna Kea Obs.

| discovered=4 February 1997

| mpc_name=(58534) Logos

| pronounced={{IPAc-en|ˈ|l|oʊ|ɡ|ɒ|s}} or {{IPAc-en|ˈ|l|ɒ|ɡ|ɒ|s}}

| adjectives=Logian {{IPAc-en|ˈ|l|ɒ|dʒ|i|ə|n}}{{OED|Logian}}

| alt_names={{mp|1997 CQ|29}}

| named_after=Logos
{{small|(Aeon in Ptolemy Gnostics)}}

| mp_category=TNO{{·}}cubewano
cold

| orbit_ref=

| epoch=13 January 2016 (JD 2457400.5)

| observation_arc=5582 days (15.28 yr)

| uncertainty=3

| semimajor={{Convert|45.549|AU|Tm|abbr=on}}

| perihelion={{Convert|39.945|AU|Tm|abbr=on}}

| aphelion={{Convert|51.153|AU|Tm|abbr=on|lk=on}}

| eccentricity=0.12304

| period=307.42 yr (112284 d)

| inclination=2.8946°

| asc_node=132.491°

| arg_peri=339.21°

| mean_anomaly=56.495°

| mean_motion={{Deg2DMS|0.0032062|sup=ms}} / day

| satellites= Zoe {{small|(est. D: 66 km)}}

| mean_diameter = {{val|77|18|u=km}}

| mass={{val|2.7|e=17|ul=kg}}

| density=1.0 g/cm³

| rotation=

| albedo=0.39 ± 0.17

| spectral_type=

| abs_magnitude=6.6

}}

58534 Logos, or as a binary system (58534) Logos-Zoe, is a trans-Neptunian object and binary system from the classical Kuiper belt, approximately {{convert|77|km|mi|abbr=off|sigfig=2|sp=us}} in diameter. The bright cubewano belongs to the cold population and has a 66-kilometer (41 miles) sized companion named Zoe. The system mass is {{val|4.58|0.07|e=17|ul=kg}}.

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

Zoe

{{Infobox planet

| minorplanet = yes

| name = Zoe

| image = orbit5.gif

| image_scale =

| caption = 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.

| discoverer = Keith S. Noll et al.

| discovered = 17 November 2001

| alt_names = {{nowrap|(58534) Logos I}}

| pronounced = {{IPAc-en|ˈ|z|oʊ|.|iː}}

| named_after = Zoe (Ζωή)

| adjectives = Zoean {{IPAc-en|z|oʊ|ˈ|iː|ə|n}})

| orbit_ref =

| semimajor = {{val|8217|u=km}}

| eccentricity = 0.546

| period = 309.9 d

| inclination =

| satellite_of = {{dp|Logos}}

| physical_ref =

| dimensions = {{val|66|u=km}}

| mass = {{val|1.5|0.2|e=17|u=kg}}

| density =

| albedo =

| spectral_type =

| magnitude =

| abs_magnitude =

}}

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

Logos was discovered on 4 February 1997, and its 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 {{nowrap|S/2001 (58534) 1}}. Once confirmed it was officially designated (58534) Logos I and named Zoe. It orbits Logos with a semi-major axis of 8217 km in 309.9 days with an eccentricity of 0.546. Its estimated diameter is 66 km, and mass (0.15 ± 0.02){{e|18}} 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 {{Convert|38.8|AU|e9km|abbr=unit|lk=on}} or further than 52.1 AU.

File:Pluto Logos Neptune.jpg

References

{{reflist|refs=

{{Cite web |url=https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=58534;cad=1 |title=58534 Logos (1997 CQ29) |work=JPL Small-Body Database |publisher=NASA/Jet Propulsion Laboratory |access-date=12 April 2016}}

{{cite web

|author=Marc W. Buie

|author-link=Marc W. Buie

|date=31 May 2003

|title=Orbit Fit and Astrometric record for 58534

|publisher=SwRI (Space Science Department)

|url=http://www.boulder.swri.edu/~buie/kbo/astrom/58534.html}}

{{cite web

|last1=Brown |first1=Mike

|title=How many dwarf planets are there in the Solar System

|url=http://web.gps.caltech.edu/~mbrown/dps.html

|access-date=17 February 2018}}

{{cite journal |last1=Grundy |first1=W. M |last2=Noll |first2=K. S.|last3=Stephens |first3=D. C. |title=Diverse albedos of small trans-neptunian objects |journal=Icarus |volume=176 |issue=1 |pages=184–191 |date=2005 |doi=10.1016/j.icarus.2005.01.007 |bibcode=2005Icar..176..184G |arxiv=astro-ph/0502229|s2cid=118866288 }}

{{Cite journal |last1=Grundy |first1=W. M. |last2=Noll |first2=K. S. |last3=Nimmo |first3=F. |last4=Roe |first4=H. G. |last5=Buie |first5=M. W. |last6=Porter |first6=S. B. |last7=Benecchi |first7=S. D. |last8=Stephens |first8=D. C. |last9=Levison |first9=H. F. |last10=Stansberry |first10=J. A. |doi=10.1016/j.icarus.2011.03.012 |title=Five new and three improved mutual orbits of transneptunian binaries |journal=Icarus |volume=213 |issue=2 |pages=678 |year=2011 |url=http://es.ucsc.edu/~fnimmo/website/Grundy_KBO.pdf |bibcode=2011Icar..213..678G |arxiv=1103.2751|s2cid=9571163 }}

{{cite web |date=4 March 2007 |title=(58534) Logos and Zoe |publisher=Johnston's Archive |author=Wm. Robert Johnston |url=http://www.johnstonsarchive.net/astro/astmoons/am-58534.html}}

}}

External links

[http://cbat.eps.harvard.edu/iauc/07800/07824.html IAUC 7824] {{webarchive |url=https://web.archive.org/web/20060501175745/http://cfa-www.harvard.edu/iauc/07800/07824.html |date=2006-05-01}} – [http://cbat.eps.harvard.edu/iauc/07900/07959.html IAUC 7959]
{{AstDys|058534}}
{{JPL small body}}

058534

Category:Named minor planets

Category:Binary trans-Neptunian objects

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