279 Thule

Template:Short description Template:About Template:Use dmy dates {{#invoke:infobox|infoboxTemplate | class = vcard | titleclass = fn org | title = 279 Thule | image = {{#invoke:InfoboxImage|InfoboxImage|image=Орбита астероидов 279.png|upright={{#if:||1.1}}|alt=}} | caption = Orbital diagram | headerstyle = {{#if:#D6D6D6|background-color:#D6D6D6|background-color:#E0CCFF}} | labelstyle = max-width:{{#if:||11em}}; | autoheaders = y

| header1 = Discovery

| label2 = Discovered by | data2 = Johann Palisa | label3 = Discovery site | data3 = | label4 = Discovery date | data4 = 25 October 1888 | label5 = Template:Longitem | data5 =

| header10 = {{#if:|Designations|Designations}}

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1923 RA, 1927 EC
1954 FF<ref name=jpldata/> | label15 = Template:Longitem | data15 = Asteroid belt (Thule) | label16 = Adjectives | data16 = Thulean Template:IPAc-en<ref>Template:OED</ref> | label17 = Symbol | data17 =

| header20 = Orbital characteristics{{#ifeq:|yes| (barycentric)}}<ref name=jpldata>{{#invoke:citation/CS1|citation |CitationClass=web }}</ref>

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| header60 = Proper orbital elements

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({{#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 = Template:Val Template:Small<ref name=jpldata/> | 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 = | label81 = Template:Longitem | data81 = | label82 = Template:Longitem | data82 = | label83 = Template:Longitem | data83 = | label84 = Template:Longitem | data84 = | label85 = Template:Longitem | data85 = Template:Convert<ref name=jpldata/> | 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 = Template:Val<ref name=jpldata/> | label94 = Temperature | data94 = 133 K

| data100 = {{#if:|

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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 = B−V=0.75<ref name=jpldata/>
U−B=0.32<ref name=jpldata/>
D Template:Small<ref name=jpldata/>
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| header110 = Atmosphere

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279 Thule is a large asteroid from the outer asteroid belt. It is classified as a D-type asteroid and is probably composed of organic-rich silicates, carbon and anhydrous silicates. Thule was the first asteroid discovered with a semi-major axis greater than 4 AU. It was discovered by Johann Palisa on 25 October 1888 in Vienna and was named after the ultimate northern land of Thule.

Thule asteroids

Thule was the first discovered member of the Thule dynamical group, which as of 2008 was known to consist of three objects: 279 Thule, Template:Mpl, and Template:Mpl.<ref name=Broz2008>Template:Cite journal</ref> The orbits of these bodies are unusual. They orbit in the outermost edge of the asteroid belt in a 4:3 orbital resonance with Jupiter, the result of the periodic force Jupiter exerts on a body with Thule's orbital period, in the same way (though with the reverse effect) as the Kirkwood gaps in the more inner parts of the asteroid belt.

citation

CitationClass=web }}</ref>Template:Better source needed	Name	semimajor axis (au)	period (years)	eccentricity	inclination (°)	absolute magnitude	Size (km)
279 Thule	4.269	8.82	0.0432	2.334	8.53	Template:Val
Template:Mpl	4.290	8.89	0.1335	7.132	13.84	Template:Sort
Template:Mpl	4.278	8.85	0.2513	3.238	14.53	Template:Sort
Template:Mpl	4.286	8.87	0.0465	5.501	15.1	Template:Sort
Template:Mpl	4.288	8.88	0.1161	3.497	15.49	Template:Sort
Template:Mpl	4.297	8.91	0.2312	3.193	15.5	Template:Sort
Template:Mp	4.283	8.86	0.3722	5.935	16.5	Template:Sort

See also

• 486958 Arrokoth – A cubewano that was formerly nicknamed Ultima Thule

External links

• Template:AstDys
• Template:JPL small body

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