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2015-2-17 10:00|鿴:10443|:0|:С

ĵλдı׼ΪAUҲдaua.u.uaѧϵijȵλ149,597,871ǧף92,955,807Ӣ-̫ƽ룬ѸΪԾ149,597,870,700ס

20128£йеĹѧᣨIAU28ȫϣѧ޼ͶƱķʽĵλ̶Ϊ149,597,870,700סµĵλ壬׵ĶԴеҲ˵ĵλڲ̫ߵľҹҲʱ仯Ӱ죨ȻĵλԴյƽ룩

ʼֽдuaӢϵĹõauϻƼAUͬʱʱ׼ISO 31-1ҲʹAUͨдĸʹѧҵĵλţaua.u.ҲԭӵλⵥλAU㷺ĵʹΪĵλķš1ĵλֵΪλijֵԷAʾ

ĵλAUԭʼĶǵ̫Բ볤᳤ȡ1976꣬ϻᣨIAUAUĶʹΪȷø˹k峤ȡʱֵ0.017 202 098 95ΪĵλijȡһֵĶһСԺԣĿԾÿ0.017 202 098 95ĽƵʣת365.2568983գһ˹̫꣩תҲŶӰţԲ뾶GMĽ൱ڣ0.017 202 098 952 AU3/d2ijȡֵ̫ĸıı䣨Ȼı伫ҼС20128£ѧͶƱͨµĶ壬¶һΪλֵ149,597,870,700ס

ִIJ

λãԴ̫̽״ң⾫ܵIJе״һЩ巴Ĺõʱ䡣Ȼ󣬽ЩλѧļȽϣλͨΪʹĵλ㡣ЩȽĵλʹù٣ֵΪ173.144 632 6847 (69) AU/dĶʱBarycentric Dynamical TimeTDBͬڹʵλƣSIǹ̶/루cSIΪʾλʹAU/dcAUٵķĵλõĵλҲףA֣

A = 86\,400 \frac{c_{\rm SI}}{c_{\rm AU}}.

ϻ2009ƽʵңJPLͶ˹ѧԺIAARASΪȽ֮ĵλAUѹֵΪλֵǣ

A = 149 597 870 700 (3) m

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ݶ壬ĵλG̫MġȻGMڹʵλƣSIжûоȷIJֵƵֵѾǵλþȷĵ֪ţǶȱʾĿյɣֻƷҪǵλãΪҪʹĵλʹùʵλơ

ļҲҪǵЧӦرǣڵϵʱʱTTǵ˶Ƚϲdz""ȽʱʱڱĶȱ쳤ͳIJĶʱTDBΪ̫ľ벻ǹ̶ģ0.983 289 8912ĵλ1.016 710 3335ĵλ֮仯ҵ򿿽̫յ㣩ʱ̫ҲȽǿͬʱҲԱȽϿٶڹ·ƶͬ׵Ķʱ룬еĹ۲Ǻ㶨Ĺ٣dzߵijȱȽʱߵijƺԵı仯

ױΪгȣԭȣĵλǹʶλƣSIδھȷʵϣʼίԱᣨCIPMע⵽˶ֻһ㹻Сռ߶УСԵӰԺԡˣ̫ϵΧڵľδġ1976ĵλĶʾģرΪûضIJοϵʱʵ֤Կļ㣺һȫĶ壬ڹ

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˹˹º̫ĽǶ87㣬̫ľǵ¾1820ʵ390

ݸڡ׼Praeparatio Evangelica˹̫ᷢľ"ҦӦĦɦئ ̦ԦѦɦĦς ӦŦӦѦʦϦҦɦς ʦ ϦʦӦئʦɦҦ̦ԦѦɦς"40080000˹أ4,080,000˹أ1903갣¡ܶټ룩൱804,000,000˹أedition of Édouard des Places1974-1991ı༭ϣ˹൱ֽ185190ףǰߵķֻ̫ͣ755,000ǧףڶλķ14870ǧ15280ǧףȷ2% ϲǡ˹Ҳ˵̫ĹֵPappusǵ뾶490ŵ˹άG.J.ͼĬؽƲ⣬Կó̫Ӳ""7ֵļ衣

һƪйѧģ㾭ԼԪǰһͣʾüѧ̫ľ룺ƽ̹ģʹ1000ص㣬Ӱȡ

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ϲǡ˹Ԫǰ2ͣ7'490
ܣԪ2ͣ2 501,210
Godefroy Wendelin16351514,000
Ү׻޿˹16391514,000
˹ٰݸ˹16598.624,000
& 죨167221,700
ķʵ£17718.624,000
ɡŦ18958.8023,440
ɪ޲أ19098.80723,420
޵¡˹˹19418.79023,466
ִ8.79414323,455

Ԫ2ܹ̫ͣƽǵ뾶1,210ҪȷֵܲӲĵƽӲ1 26䣬ֵʵʵĴࡣȻƵǵ뾶64 1/6ӲͼеĴһֵǽӽȷֵġȻ̫ӴСóΪֱ̫ʱֱһҴʳļ¼ʳʱͨӰ׶ʱӰ׶ֱЩݣ̫ľѧǵ뾶1,210ʹ̫ıʴԼ19ϰ˹˹ƥͼΡȻ˵ܵĹʽеģ΢Сı仯dzУֻҪڲϱٷֵ㣬Ϳʹ̫ľ޴

ϣѧʹ˹֮ѧҶܵģһЩ䶯ǶƵ̫벢ûжĸı䡣磬ڽѧʱal-Farghn̫ƽ1,170뾶zijal-Battnʹõ̫ƽ1,108뾶ѧңal-BrnҲʹƵֵԺŷ͵ڹҲʹƵֵ1,142뾶1,150뾶ֵܵҲdzӽ̫뾭16Ҵ

Լ˹ǵһλϵܹƵֵ̫͵ˣݿգҪ³DZ1627꣩˶ѧҼ̫ǵԾ룬²̫ԾȤȻǣԶķԱ۹۲ȷIJǶȣâѧGodefroy Wendelin1635½а˹˹Ĺ۲⣬ҷֵܵٵ11

ͨĹ۲Եõ׼ȷĹֵͬλòգԾȷǵӲͽ̫Ծ룬̫ӲֱӲҮ׻޿˹ͼ1639۲ĽΪֵ1662귢õӲֵ15룬µֵֵ̫ӲԵ-̫ľ͵İ뾶Ϊ߲ģ

A = {1\over{\tan\alpha}}.

̫ӲԽС̫͵ľԽԶ15"̫Ӳ൱ڵ̫ľ13,750뾶

ݸ˹Ӧø󣺾ɱȽϽǺӴС24,000뾶൱8.6"̫ӲȻݸ˹ĹֵdzӽִֵΪĹ޷֤󣩵ļ裬ʷѧҶijɾ;ۿۣȷֵƺdz˶õĹ۲⣬ĸ໥Ľ

ĵλ

νĺڵЧӦʹյIJdzѣֺ󣬽Ǿ̫棬Dzĵλѷ

Jean RicherͿ1672ǴӽʱֱӰͷǵ׸ǵӲǵõ̫Ӳ9½"൱ڵ뾶22,000ǻǵһλ׼ȷͿɿĵ뾶ʵѧңǵͬáƤ1669뾶3,269,000toise1toise =1.949ףһλͬУաĬ1676֤ʵⲨٶȴֵ֮ͨҪԹо̫ľʱ䣬ÿλĹʱֽѧһ뵥λ

ղķ˹и﷢չõķ۲գҷOptica Promata1663꣩õɡǿҵ֧֣Ӧ17611769Լ18741882Ľչ۲ϡdzɶԷģÿͷ͹۲ĴһΣ17611769Ĺ۲һǰδеĹʺսڼ䣬ǺķѾDzʮѧؽй۲⣺мλϹᡣJrôme LalandeֲͬĽõ̫Ӳ8.6Ľ

A/Gm
1895в149.250.12
1941Ӳ149.6740.016
1964״149.59810.001
1976ң149.597 8700.000 001
2009ң149.597 870 7000.000 000 003

һַвйأҵõ㷺̫ܵӲ8.80壨ӽڵֵ8.794143壩ȻɡŦҲýյϣַܸߵۡŦҲA. A. MichelsonԵػ豸٣вÿλĹʱϣ״ֱӲõǧΪλյؾ롣Ŧ̫Ӳֵ͹в˹1896걻һιϵijֱ1964궼ĵλ1930׶ȱʹá

Сǰǵķֺ19001901ĽӽʹӲIJúܴĸơһιԵר1930-1931ٶȽ˰ӲIJ

1960ڣֱ״ǺͻǵľΪеķŹٲֵĸĽʾŦ̫Ӳ͹вǻìܵġ

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ĵľ뵥λʹĵλߣӲǽǶ1ľ롣ͼе1AU1pcΪձμӲ

λAױʾĵλֵԱij

A^3 = \frac{D^2}{G M_\odot k^2}

˴GţM̫kǸ˹Dʱеһ졣̫Է䲻ȶʧǵĹҲȶŲԶ̫Ҳ·ĵλΪһֶλĺҲкԹ̶ֵĵλ

ͬڹʶλƣSIȷֵ˹kǹ̶ĵλϵͳÿλĹʱȫͬڹʶλGMˣпܽĵλȫùʶλ𽥳Ϊ淶

2004꣬ʹ÷̫ϵIJΪ̫ãλÿ+154

һ͵Ŀ̫ϫĦǵϫáձǰѧ2009ǵĽ顣

֮󣬻ڷͽǶȵĹ۲õϵ͵Ĺֵÿ+72 ףȻԶ̫Ŀǰֵڷܵı仯ÿ1012IJ֣߸͡˽۲⵽ӿDGPģ͡

ЩǽƵƽ룬ڹ˶Ծʱ仯ҲҪɵı仯

ľ0.0026 0.0001 AU

̫ľ1.00 0.02 AU

̫ľ1.52 0.14 AU

ľ̫ľ5.20 0.05 AU

ڤ̫ľ39.5 9.8 AU

ŰشԼʼ35 AU

ɢʼ45 AUŰشص10 AU

Űش50-55 AU

SednaĹΧ̫76942 AUSednaĿǰ̫ľԼ88AU2009꣩

94 AU̫/Ƿ/Ǽʽ֮ն𲨡

96.7 AU2009̫ľ롣ǺĿǰ̫ϵг˳Ǻ̫֮̽⣬ңԶ塣

100 AUHeliosheath

119 AU20102º1̫ľ룬Ŀǰ̫Զ壬ÿ3.5AUľԶ̫С

100-1000 AUɢֲҪ롣

1000-3000 AUϣ/ŷƿʼľ롣

20,000 AUϣ/ŷƽľ룬"ŷ"Ŀʼ

50,000 AUơŷơܵ뼫ޣ0.8 ꣩

100,000 AUơŷơܵԶ뼫ޣ1.6꣩

230,000 AU̫Ӱ루ϣ/򣩡ԽǼʽʣ1.1ࣨ3.6꣩

ǣ̫֮⣬ĺǣ̫Լ268, 000 AU

ĵƽֱ5.5 AU822,800,000ǧף

̫ϵĵľ룬Լ1.7109 AU

1{}AU = 149,597,870 km = 1.5 \times 10^8 km

1AU = 149,597,870.700 0.003ǧס 92,955,807Ӣ 8.317 ֡ 499 s

1 0.002 AU

1 ס 0.0067 AU

1 63,241 AU

1 206,265 AU

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