55 Pandora
Template:Short description Template:For Template:Use dmy dates {{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = 55 Pandora | image = {{#invoke:InfoboxImage|InfoboxImage|image=55Pandora (Lightcurve Inversion).png|upright={{#if:||1.1}}|alt=}} | caption = Light curve–based 3D model of Pandora | headerstyle = {{#if:#D6D6D6|background-color:#D6D6D6|background-color:#E0CCFF}}; color:inherit; | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y
| header1 = Discovery
| label2 = Discovered by | data2 = George Mary Searle | label3 = Discovery site | data3 = Albany, New York | label4 = Discovery date | data4 = September 10, 1858 | label5 = Template:Longitem | data5 =
| header10 = {{#if:|Designations|Designations}}
| label11 = Template:Longitem | data11 = (55) Pandora | label12 = Pronunciation | data12 = Template:IPAc-en<ref>Template:OED</ref> | label13 = Template:Longitem | data13 = Pandora | label14 = Template:Longitem | data14 = | label15 = Template:Longitem | data15 = Main belt | label16 = Adjectives | data16 = Pandorian Template:IPAc-en<ref>John Krumpelmann (1959) Bayard Taylor and German Letters, p. 122</ref> | label17 = Symbol | data17 = File:55 Pandora symbol (bold).svg (astrological)
| header20 = Orbital characteristics{{#ifeq:|yes| (barycentric)}}<ref name="JPL" />
| data21 = | data22 = {{#if:May 5, 2025 |Epoch May 5, 2025}} | data23 = {{#if: | Uncertainty parameter {{{uncertainty}}}}} | label24 = Observation arc | data24 = | label25 = Earliest precovery date | data25 = | label26 = {{#switch:{{{apsis}}} |apsis|gee|barion|center|centre|(apsis)=Apo{{{apsis}}} |Ap{{#if:|{{{apsis}}}|helion}}}} | data26 = Template:Convert | label27 = Peri{{#if:|{{{apsis}}}|helion}} | data27 = Template:Convert | 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:Convert | label33 = Template:Longitem | data33 = | label34 = Eccentricity | data34 = 0.145 | label35 = Template:Longitem | data35 = 4.58 yr (1,673 d) | label36 = Template:Longitem | data36 = | label37 = Template:Longitem | data37 = | label38 = Template:Longitem | data38 = 114.416° | label39 = Template:Longitem | data39 = | label40 = Inclination | data40 = 7.176° | label41 = Template:Longitem | data41 = | label42 = Template:Longitem | data42 = 10.287° | label43 = Template:Longitem | data43 = | label44 = Template:Longitem | data44 = | label45 = Template:Longitem | data45 = 4.996° | label46 = Template:Nowrap | data46 = | label47 = Satellite of | data47 = | 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 = TJupiter | data59 =
| header60 = Proper orbital elements
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| data64 = {{#if: |{{{p_mean_motion}}} degTemplate:\yr}}
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| data65 = {{#if:|{{#expr:360/1 round 5}} yr
({{#expr:365.25*360/1 round 3}} d) }}
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| data66 = {{#if:|{{{perihelion_rate}}} arcsecTemplate:\yr }}
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| header70 = Template:Anchor{{#if:yes| Physical characteristics|Physical characteristics}}
| label71 = Dimensions | data71 = Template:Val km<ref name="JPL" /> | label72 = Template:Longitem | data72 = | 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 = 3.1Template:E kgTemplate:Citation needed | label81 = Template:Longitem | data81 = | label82 = Template:Longitem | data82 = | label83 = Template:Longitem | data83 = | label84 = Template:Longitem | data84 = | label85 = Template:Longitem | data85 = 4.804 h<ref name="JPL" /> | 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 = 0.204<ref name="JPL" /> | label94 = Temperature | data94 =
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{{#if:|}}{{#if:|}}{{#if:|}}{{#if:|}}| Surface temp. | min | mean | max |
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| label101 = Surface absorbed dose rate
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| label102 = Surface equivalent dose rate
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| data103 = Tholen = M<ref name=JPL/><ref name=Britt2014/>
SMASS = X<ref name=JPL/>
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| data105 =
| label106 = Template:Longitem
| data106 = 7.84<ref name="JPL" />
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| header110 = Atmosphere
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55 Pandora is a fairly large and relatively bright asteroid in the asteroid belt. Pandora was discovered by American astronomer and Catholic priest George Mary Searle on September 10, 1858, from the Dudley Observatory near Albany, New York.<ref name="IAU_MPC"/> It was his only asteroid discovery.
It is named after Pandora, the first woman in Greek mythology, who unwisely opened a box that released evil into the world. The name was apparently chosen by Blandina Dudley, widow of the founder of the Dudley Observatory, who had been involved in an acrimonious dispute with the director of the observatory, astronomer B. A. Gould.{{ safesubst:#invoke:Unsubst||date=__DATE__ |$B= Template:Fix }} Gould felt that the name had an "apt significance".<ref>Template:Cite book</ref> The asteroid shares its name with Pandora, a moon of Saturn.
This object is orbiting the Sun with a period of 4.58 years, a semi-major axis of Template:Val, and an eccentricity of 0.15. Its orbital plane lies at an angle of 7.2° to the plane of the ecliptic. Photometric observations of this asteroid at the Rozhen Observatory in Bulgaria during 2010 gave a light curve with a period of 4.7992 hours and a brightness variation of Δm=0.22 mag. This is consistent with a period of 4.804 hours and an amplitude of 0.24 obtained during a 1977 study.<ref name="Radeva2011"/> It has a cross-sectional size of Template:Convert.<ref name="JPL"/>
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