762 Pulcova
Template:Short description Template:Use dmy dates {{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = 762 Pulcova | image = {{#invoke:InfoboxImage|InfoboxImage|image=762Pulcova-SwRI.gif|upright={{#if:||1.1}}|alt=}} | caption = 762 Pulcova and satellite as seen with adaptive optics in 2000<ref name=CFHT2000/> | headerstyle = {{#if:#D6D6D6|background-color:#D6D6D6|background-color:#E0CCFF}}; color:inherit; | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y
| header1 = Discovery<ref name=jpldata/>
| label2 = Discovered by | data2 = G. N. Neujmin | label3 = Discovery site | data3 = | label4 = Discovery date | data4 = 3 September 1913 | label5 = Template:Longitem | data5 =
| header10 = {{#if:|Designations|Designations}}
| label11 = Template:Longitem | data11 = (762) Pulcova | label12 = Pronunciation | data12 = Template:IPAc-en | label13 = Template:Longitem | data13 = Pulkovo Heights | label14 = Template:Longitem | data14 = 1913 SQ | label15 = Template:Longitem | data15 = Main belt | label16 = Adjectives | data16 = Pulcovian Template:IPAc-en<ref>Catalogue of the Mathematical, Historical, Bibliographical and Miscellaneous Portion of the Celebrated Library of M. Guglielmo Libri, 1861, p. 216</ref> | label17 = Symbol | data17 =
| header20 = Orbital characteristics{{#ifeq:|yes| (barycentric)}}<ref name=jpldata/>
| data21 = | data22 = {{#if:31 July 2016 (JD 2457600.5) |Epoch 31 July 2016 (JD 2457600.5)}} | data23 = {{#if:0 | Uncertainty parameter 0}} | label24 = Observation arc | data24 = 100.08 yr (36553 d) | label25 = Earliest precovery date | data25 = | label26 = {{#switch:{{{apsis}}} |apsis|gee|barion|center|centre|(apsis)=Apo{{{apsis}}} |Ap{{#if:|{{{apsis}}}|helion}}}} | data26 = Template:Convert (Q) | label27 = Peri{{#if:|{{{apsis}}}|helion}} | data27 = Template:Convert (q) | 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 (a) | label33 = Template:Longitem | data33 = | label34 = Eccentricity | data34 = 0.10319 (e) | label35 = Template:Longitem | data35 = 5.60 yr (2046.5 d) | label36 = Template:Longitem | data36 = | label37 = Template:Longitem | data37 = | label38 = Template:Longitem | data38 = 348.62° (M) | label39 = Template:Longitem | data39 = Template:Deg2DMS / day (n) | label40 = Inclination | data40 = 13.089° (i) | label41 = Template:Longitem | data41 = | label42 = Template:Longitem | data42 = 305.76° (Ω) | label43 = Template:Longitem | data43 = | label44 = Template:Longitem | data44 = | label45 = Template:Longitem | data45 = 189.54° (ω) | label46 = Template:Nowrap | data46 = | label47 = Satellite of | data47 = | label48 = Group | data48 = | label49 = {{#switch: |yes|true=Satellites |Known satellites}} | data49 = S/2000 (762) 1<ref name=CFHT2000/> | label50 = Star | data50 = | label51 = Earth MOID | data51 = Template:Convert | label52 = Mercury MOID | data52 = | label53 = Venus MOID | data53 = | label54 = Mars MOID | data54 = | label55 = Jupiter MOID | data55 = Template:Convert | label56 = Saturn MOID | data56 = | label57 = Uranus MOID | data57 = | label58 = Neptune MOID | data58 = | label59 = TJupiter | data59 = 3.158
| 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) }}
| label66 = Template:Longitem
| data66 = {{#if:|{{{perihelion_rate}}} arcsecTemplate:\yr }}
| label67 = Template:Longitem
| data67 = {{#if:|{{{node_rate}}} arcsecTemplate:\yr}}
| header70 = Template:Anchor{{#if:yes| Physical characteristics|Physical characteristics}}
| label71 = Dimensions | data71 = | label72 = Template:Longitem | data72 = | label73 = Template:Longitem | data73 = Template:Val km | label74 = Template:Longitem | data74 = | label75 = Template:Longitem | data75 = | label76 = Flattening | data76 = | label77 = Circumference | data77 = | label78 = Template:Longitem | data78 = | label79 = Volume | data79 = | label80 = Mass | data80 = 1.40Template:E kg<ref name=Baer/> | label81 = Template:Longitem | data81 = 0.90 g/cm3<ref name=Baer/> | label82 = Template:Longitem | data82 = | label83 = Template:Longitem | data83 = | label84 = Template:Longitem | data84 = | label85 = Template:Longitem | data85 = Template:Convert | label86 = Template:Longitem | data86 = 5.839 hr<ref name=jpldata/> | 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 = Template:Val<ref name=jpldata/> | 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 | data101 = | label102 = Surface equivalent dose rate | data102 = | label103 = Template:Longitem | data103 = | label104 = Template:Longitem | data104 = | label105 = Template:Longitem | data105 = 11.93 to 14.79<ref>Magnitudes generated with JPL Horizons for the year 1950 through 2100</ref> | label106 = Template:Longitem | data106 = 8.28<ref name=jpldata/> | label107 = Template:Longitem | data107 =
| header110 = Atmosphere
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762 Pulcova is a main-belt asteroid. It was discovered by Grigoriy N. Neujmin in 1913,<ref name=jpldata/> and is named after Pulkovo Observatory, near Saint Petersburg. Pulcova is 137 km in diameter,<ref name=jpldata>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> and is a C-type asteroid, which means that it is dark in colouring with a carbonate composition.
Photometric observations of this asteroid from Leura, Australia during 2006 gave a light curve with a period of 5.8403 ± 0.0005 hours and a brightness variation of 0.20 ± 0.02 in magnitude. This result is in agreement with previous studies.<ref name="Oey2006"/>
Satellite
On February 22, 2000,<ref name=CFHT2000>{{#invoke:citation/CS1|citation |CitationClass=web }} (AO image)</ref> astronomers at the Canada-France-Hawaii Telescope on Mauna Kea, Hawaii, discovered a 15-km moon (roughly a tenth the size of the primary)<ref name=swri2000>{{#invoke:citation/CS1|citation |CitationClass=web }} (mentions both 90 Antiope and 762 Pulcova)</ref> orbiting Pulcova at a distance of 800 km.<ref name="Merline2000"/> Its orbital period is 4 days.<ref name="Johnston">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> The satellite is about 4 magnitudes fainter than the primary.<ref name="Merline2000"/> It was one of the first asteroid moons to be identified.
Density
In the year 2000, Merline estimated Pulcova to have a density of 1.8 g/cm3, which would make it more dense than the triple asteroid 45 Eugenia, and binary 90 Antiope.<ref name="Merline2000">{{#invoke:citation/CS1|citation |CitationClass=web }}</ref> But estimates by Marchis in 2008 suggest a density of only 0.90 g/cm3,<ref name=Baer> {{#invoke:citation/CS1|citation |CitationClass=web }} </ref> suggesting it may be a loosely packed rubble pile, not a monolithic object.
References
External links
- Asteroids with Satellites, Robert Johnston, johnstonsarchive.net
- Template:AstDys
- Template:JPL small body
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