Last Updated：2025/11/23
(astronomy) The brightest star in the southern constellation of Centaurus. Alpha Centauri is actually a binary star with Alpha Centauri C or Proxima Centauri as a third component. Alpha Centauri A is the brightest star of the system and is somewhat brighter than our sun. Alpha Centauri B is somewhat fainter than Alpha Centauri A but much brighter than Proxima Centauri.
音声機能が動作しない場合はこちらをご確認ください
See correct answer
Alpha Centauri A
Edit Histories（0）
Source Word
Alpha Centauri A
Proper noun
(astronomy)
The
brightest
star
in
the
southern
constellation
of
Centaurus.
Alpha
Centauri
is
actually
a
binary
star
with
Alpha
Centauri
C
or
Proxima
Centauri
as
a
third
component.
Alpha
Centauri
A
is
the
brightest
star
of
the
system
and
is
somewhat
brighter
than
our
sun.
Alpha
Centauri
B
is
somewhat
fainter
than
Alpha
Centauri
A
but
much
brighter
than
Proxima
Centauri.
Japanese Meaning
アルファ・ケンタウリAは、南半球に位置するケンタウルス座に属する連星系アルファ・ケンタウリにおいて、最も明るい星を指します。この星は太陽よりもやや明るい輝度を持ち、アルファ・ケンタウリBやプロキシマ・ケンタウリとともに系を構成しています。
Sense（1）
(astronomy)
The
brightest
star
in
the
southern
constellation
of
Centaurus.
Alpha
Centauri
is
actually
a
binary
star
with
Alpha
Centauri
C
or
Proxima
Centauri
as
a
third
component.
Alpha
Centauri
A
is
the
brightest
star
of
the
system
and
is
somewhat
brighter
than
our
sun.
Alpha
Centauri
B
is
somewhat
fainter
than
Alpha
Centauri
A
but
much
brighter
than
Proxima
Centauri.
