Alpha Ophiuchi Comparison Table

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Alpha Ophiuchi 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 absorption line is usually part of is a kind of has apparent magnitude has synonym has definition has luminosity class

A star O, B, A, and early F 10000 K white H I early star Star with spectral type A in which the spectrum of the Balmer lines of hydrogen attain their greatest strength. Helium lines can no longer be seen. Some metallic lines are present; in late A stars the H and K lines of ionized calcium appear. A0 stars have a color index of zero.

giant greater than 1000 Kelvin star High-luminosity star that lies above the main sequence on the Hertzsprung-Russell diagram. III

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

Alpha Ophiuchi 17 34 56.0 +12 33 36 A5III Milky Way 10000 K naked eye star 2.08 white for many centuries 0.15 H I asterism brighter than 5 HR 6556 III

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 absorption line	is usually part of	is a kind of	has apparent magnitude	has synonym	has definition	has luminosity class
A star			O, B, A, and early F		10000 K			white			H I		early star			Star with spectral type A in which the spectrum of the Balmer lines of hydrogen attain their greatest strength. Helium lines can no longer be seen. Some metallic lines are present; in late A stars the H and K lines of ionized calcium appear. A0 stars have a color index of zero.
giant					greater than 1000 Kelvin								star			High-luminosity star that lies above the main sequence on the Hertzsprung-Russell diagram.	III
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
Alpha Ophiuchi	17 34 56.0	+12 33 36	A5III	Milky Way	10000 K	naked eye star	2.08	white	for many centuries	0.15	H I	asterism		brighter than 5	HR 6556		III

Next A star: Alpha Pictoris Up: A star, giant, naked eye star Previous A star: Alpha Lacertae