absolute stability 絕對(duì)穩(wěn)定性

absorbing dust mass 致吸塵物質(zhì)

absorption trough 吸收槽

abundance standard 豐度標(biāo)準(zhǔn)星

accreting binary 吸積雙星

accretion column 吸積柱

accretion flow 吸積流

accretion mound 吸積堆

accretion ring 吸積環(huán)

accretion stream 吸積流

acoustic mode 聲模

active binary 活動(dòng)雙星

active chromosphere binary 活動(dòng)色球雙星

active chromosphere star 活動(dòng)色球星

active optics 主動(dòng)光學(xué)

actuator 促動(dòng)器

Adams ring 亞當(dāng)斯環(huán)

adaptive optics 自適應(yīng)光學(xué)

additional perturbation 附加攝動(dòng)

AGB, asymptotic giant branch 漸近巨星支

Alexis, Array of Low-Energy X-ray 〈阿列克希斯〉低能 X 射線(xiàn)

Imaging Sensors 成象飛行器

AM Herculis star 武仙 AM 型星

amplitude spectrum 變幅譜

angular elongation 距角

anonymous galaxy 未名星系

anonymous object 未名天體

anti-jovian point 對(duì)木點(diǎn)

annular-total eclipse 全環(huán)食

aperture photometry 孔徑測(cè)光

APM, Automated Photographic Measuring 〈APM〉底片自動(dòng)測(cè)量?jī)x

apoapse 遠(yuǎn)質(zhì)心點(diǎn)

apoapse distance 遠(yuǎn)質(zhì)心距

apogalacticon 遠(yuǎn)銀心點(diǎn)

apomartian 遠(yuǎn)火點(diǎn)

apparent association 表觀(guān)成協(xié)

apparent luminosity function 視光度函數(shù)

apparent superluminal motion 視超光速運(yùn)動(dòng)

apsidal advance 拱線(xiàn)進(jìn)動(dòng)

apsidal precession 拱線(xiàn)進(jìn)動(dòng)

Arcturus group 大角星群

area image sensor 面成象敏感器

area photometry 面源測(cè)光

area spectroscopy 面源分光

argument of pericentre 近心點(diǎn)幅角