Achernar Comparison Table

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Achernar comparison table

Subject has right ascension has declination has spectral type is part of has surface temperature is an instance of has V magnitude has color has been observ has B-V magnitude has distance has absorption line is usually part of is a kind of has apparent magnitude has synonym has definition has luminosity class

B star O, B, A, and early F 11000 to 28000 K blue-white He I early star Blue-white star of spectral type B whose spectra are characterized by absorption lines of neutral helium which reach their maximum intensity at B2. The Balmer lines of hydrogen are strong, and lines of singly ionized oxygen and other gases are also present.

naked eye star Milky Way greater than 1000 Kelvin for many centuries asterism naked eye object brighter than 5 A star visible without visual aids

subgiant greater than 1000 Kelvin star A star whose position on the H-R diagram is intermediate between that of main-sequence stars and normal giants of the same spectral type. IV

Achernar 1 37 42.9 -57 14 12 B5 Milky Way 11000 to 28000 K subgiant 0.46 blue-white for many centuries -0.16 35 pc He I asterism brighter than 5 HR 472 IV

Subject	has right ascension	has declination	has spectral type	is part of	has surface temperature	is an instance of	has V magnitude	has color	has been observ	has B-V magnitude	has distance	has absorption line	is usually part of	is a kind of	has apparent magnitude	has synonym	has definition	has luminosity class
B star			O, B, A, and early F		11000 to 28000 K			blue-white				He I		early star			Blue-white star of spectral type B whose spectra are characterized by absorption lines of neutral helium which reach their maximum intensity at B2. The Balmer lines of hydrogen are strong, and lines of singly ionized oxygen and other gases are also present.
naked eye star				Milky Way	greater than 1000 Kelvin				for many centuries				asterism	naked eye object	brighter than 5		A star visible without visual aids
subgiant					greater than 1000 Kelvin									star			A star whose position on the H-R diagram is intermediate between that of main-sequence stars and normal giants of the same spectral type.	IV
Achernar	1 37 42.9	-57 14 12	B5	Milky Way	11000 to 28000 K	subgiant	0.46	blue-white	for many centuries	-0.16	35 pc	He I	asterism		brighter than 5	HR 472		IV

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