107 Camilla

Template:Short description Template:Use dmy dates {{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = 107 Camilla | image = {{#invoke:InfoboxImage|InfoboxImage|image=107Camilla (Lightcurve Inversion).png|upright={{#if:||1.1}}|alt=}} | caption = Template:Longitem | headerstyle = {{#if:#D6D6D6|background-color:#D6D6D6|background-color:#E0CCFF}}; color:inherit; | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y

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Template:Val<ref name="SIMPS" />
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Template:Val<ref name="SIMPS" />
Template:Val<ref name="Masiero-2014" />
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C Template:Small
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File:107 Camilla.png

a lightcurve model of the asteroid on the top and an Image of the asteroid on the bottom.

107 Camilla is one of the largest asteroids from the outermost edge of the asteroid belt, approximately Template:Convert in diameter. It is a member of the Sylvia family and located within the Cybele group. It was discovered on 17 November 1868, by English astronomer Norman Pogson at Madras Observatory, India, and named after Camilla, Queen of the Volsci in Roman mythology.<ref name="springer" /><ref name="MPC-object" /> The X-type asteroid is a rare triple asteroid with two minor-planet moons discovered in 2001 and 2016, respectively. It is elongated in shape and has a short rotation period of 4.8 hours.<ref name="lcdb" />

Physical characteristics

Camilla has a very dark surface and primitive carbonaceous composition.

A large number of rotational lightcurves of have been obtained from photometric observations since the 1980s.<ref name="Tanigawa-2015b" /> Best rated results gave a short rotation period of 4.844 hours with a brightness amplitude between 0.32 and 0.53 magnitude.<ref name="Harris-1989b" /><ref name="Polishook-2009c" />Template:Efn

Lightcurve analysis indicates that Camilla's pole most likely points towards ecliptic coordinates (β, λ) = (+51°, 72°) with a 10° uncertainty,<ref name="Torppa-2003" /> which gives it an axial tilt of 29°. Follow-up modeling of photometric data gave similar results.<ref name="Durech-2011a" /><ref name="Hanus-2013b" /><ref name="Hanus-2016a" />

Diameter and albedo

10μ radiometric data collected from Kitt Peak in 1975 gave a first diameter estimate of 209 km.<ref name="Morrison-1976" /> According to the space-based surveys carried out by the Japanese Akari satellite, the Infrared Astronomical Satellite IRAS and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer,<ref name="AKARI" /><ref name="Masiero-2014" /><ref name="SIMPS" /><ref name="WISE" /><ref name="Pravec-2012b" /> as well as observations by the Keck Observatory and photometric modeling,<ref name="Marchis-2012" /><ref name="Hargrove-2012" /><ref name="Marchis-2006c" /><ref name="Durech-2011a" /><ref name="Hanus-2013b" /><ref name="Marchis-2008c" /><ref name="Hargrove-2011" /> Camilla measures between 185 and 247 kilometers in diameter and its surface has an albedo between 0.160 and 0.294.<ref name="lcdb" />

Satellites

Camilla is the 6th triple asteroid that has been discovered in the asteroid belt, after 87 Sylvia, 45 Eugenia, 216 Kleopatra, 93 Minerva and 130 Elektra (a quaternary).

Outer satellite

{{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = S/2001 (107) 1 | image = {{#invoke:InfoboxImage|InfoboxImage|image=|upright={{#if:||1.1}}|alt=}} | caption = | headerstyle = {{#if:#A0FFA0|background-color:#A0FFA0|background-color:#E0CCFF}}; color:inherit; | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y

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| label71 = Dimensions | data71 = | label72 = Template:Longitem | data72 = Template:Val, assuming equal albedos and D_Camilla = 254 km<ref name="Pajuelo2018"/>
Template:Val<ref name=Baer />
~ 11 ± 2 km<ref name="Marchis-2006c" /> | label73 = Template:Longitem | data73 = | label74 = Template:Longitem | data74 = | label75 = Template:Longitem | data75 = | label76 = Flattening | data76 = | label77 = Circumference | data77 = | label78 = Template:Longitem | data78 = | label79 = Volume | data79 = | label80 = Mass | data80 = ~1.5Template:E kg<ref name="mass">Assuming a similar density to the primary.</ref> | label81 = Template:Longitem | data81 = | label82 = Template:Longitem | data82 = | label83 = Template:Longitem | data83 = | label84 = Template:Longitem | data84 = | label85 = Template:Longitem | data85 = | label86 = Template:Longitem | data86 = | label87 = Template:Longitem | data87 = | label88 = Template:Longitem | data88 = | label89 = Template:Longitem | data89 = | label90 = Template:Longitem | data90 = | label91 = Template:Longitem | data91 = | label92 = Template:Longitem | data92 = | label93 = {{#if:yes |Template:Longitem |Albedo}} | data93 = | label94 = Temperature | data94 =

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Surface temp.	min	mean	max
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On 1 March 2001, a minor-planet moon of Camilla was found by A. Storrs, F. Vilas, R. Landis, E. Wells, C. Woods, B. Zellner, and M. Gaffey using the Hubble Space Telescope.<ref name="iauc7599" /> It has the provisional designation Template:Mp but has not yet received an official name.

Later observations in September 2005 with the Very Large Telescope (VLT) allowed the determination of an orbit. In addition to the data in the infobox at right, the inclination was found to be 3 ± 1° with respect to an axis pointing towards (β, λ) = (+55°, 75°). Given the ~10° uncertainty in the actual rotational axis of Camilla, one can say that the orbit's inclination is less than 10°.

The satellite is estimated to measure about 11 km in diameter.<ref name="Marchis-2006c" /> Assuming a similar density to the primary, this would give it an approximate mass of ~1.5Template:E kg. It has a similar colour to the primary.<ref name="iauc7599"/>

Inner satellite

{{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = S/2016 (107) 1 | image = {{#invoke:InfoboxImage|InfoboxImage|image=|upright={{#if:||1.1}}|alt=}} | caption = | headerstyle = {{#if:#A0FFA0|background-color:#A0FFA0|background-color:#E0CCFF}}; color:inherit; | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y

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| data21 = | data22 = {{#if: |Epoch {{{epoch}}}}} | data23 = {{#if: | Uncertainty parameter {{{uncertainty}}}}} | label24 = Observation arc | data24 = 428 days | label25 = Earliest precovery date | data25 = | label26 = {{#switch:{{{apsis}}} |apsis|gee|barion|center|centre|(apsis)=Apo{{{apsis}}} |Ap{{#if:|{{{apsis}}}|helion}}}} | data26 = | label27 = Peri{{#if:|{{{apsis}}}|helion}} | data27 = | label28 = Peri{{#if:|{{{apsis}}}|apsis}} | data28 = | label29 = {{#switch:{{{apsis}}} |helion|astron=Ap{{{apsis}}} |Apo{{#if:|{{{apsis}}}|apsis}}}} | data29 = | label30 = Periastron | data30 = | label31 = Apoastron | data31 = | label32 = Template:Longitem | data32 = Template:Val | label33 = Template:Longitem | data33 = | label34 = Eccentricity | data34 = Template:Val | label35 = Template:Longitem | data35 = Template:Val | label36 = Template:Longitem | data36 = | label37 = Template:Longitem | data37 = | label38 = Template:Longitem | data38 = | label39 = Template:Longitem | data39 = | label40 = Inclination | data40 = Template:Val | label41 = Template:Longitem | data41 = | label42 = Template:Longitem | data42 = | label43 = Template:Longitem | data43 = | label44 = Template:Longitem | data44 = | label45 = Template:Longitem | data45 = | label46 = Template:Nowrap | data46 = | label47 = Satellite of | data47 = 107 Camilla | label48 = Group | data48 = | label49 = {{#switch: |yes|true=Satellites |Known satellites}} | data49 = | label50 = Star | data50 = | label51 = Earth MOID | data51 = | label52 = Mercury MOID | data52 = | label53 = Venus MOID | data53 = | label54 = Mars MOID | data54 = | label55 = Jupiter MOID | data55 = | label56 = Saturn MOID | data56 = | label57 = Uranus MOID | data57 = | label58 = Neptune MOID | data58 = | label59 = T_Jupiter | data59 =

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({{#expr:365.25*360/1 round 3}} d) }} | label66 = Template:Longitem | data66 = {{#if:|{{{perihelion_rate}}} arcsec Template:\yr }} | label67 = Template:Longitem | data67 = {{#if:|{{{node_rate}}} arcsec Template:\yr}}

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| data100 = {{#if:|

Surface temp.	min	mean	max
{{{temp_name1}}}
{{{temp_name2}}}
{{{temp_name3}}}
{{{temp_name4}}}

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| header110 = Atmosphere

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In 2016, the discovery of a second satellite of Camilla was reported by astronomers at Cerro Paranal's Very Large Telescope in Chile. It has the provisional designation Template:Mp.<ref name="IAUC-9282" />

Observations were taken between 29 May 2015 and 30 July 2016, using the VLT-SPHERE, the principal instrument attached to the 8-meter "Melipal" (UT3) unit of the VLT. On 3 out of 5 observation sessions, the new satellite could be detected.<ref name="IAUC-9282" /> The body's orbit has a semi-major axis of 340 kilometers.<ref name="Johnstonsarchive" />

Notes

Template:Notelist

References

Template:Reflist

External links

IAU Circulars – 2016: S/2016 (107) 1
(107) Camilla, S/2001 (107) 1, and S/2016 (107) 1, johnstonsarchive.net
Hubble Finds New Asteroid Moon (SpaceDaily.com, 21-03-2001), includes discovery image.
107 Camilla and S/2001 (107) 1, orbit data website maintained by F. Marchis. Includes orbit diagrams.
Template:AstDys
Template:JPL small body

Template:Minor planets navigator Template:Large asteroids {{#invoke:Navbox|navbox}} Template:Authority control

107 Camilla

Contents

Physical characteristics

Diameter and albedo

Satellites

Outer satellite

Inner satellite

Notes

References

External links

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107 Camilla

Physical characteristics

Diameter and albedo

Satellites

Outer satellite

Inner satellite

Notes

References

External links

Navigation menu

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