Proxima Centauri concept from the Astronomy knowledge base

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Next flare star: UV Ceti Up: flare star Previous flare star: Wolf 359

Proxima Centauri

subject fact

Proxima Centauri has spectral type dM4e has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0
has parallax 0'.765
has distance 4.25 light-years has source: Croswell, K. 1995 The Alchemy of the Heavens, Anchor Books, 2001-09-27 09:30:41.0
has radius R = 1.3 × 10¹⁰ cm has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0
has bolometric magnitude M _bol = 11.66
is a part of Centaurus
has mass M = 0.1 M_sun
has definition An flare star probably associated with the alpha Centauri system. It is the closest star to the Sun. has source: Hopkins, J. 1976 Glossary of Astronomy and Astrophysics, University of Chicago Press, 2001-09-27 09:30:41.0
is an instance of flare star

flare star has synonym UV Ceti star

red dwarf has abundance 70 percent of all stars 2001-09-27 09:30:52.0

cataclysmic variable has peak brightness 2001-09-27 09:30:40.0
has recovery time
has outburst start time
has acronym CV

star has star surface temperature 2001-09-27 09:30:25.0
has V magnitude
has B magnitude
has U magnitude
has position on celestial sphere from the point of view of Earth
has proper motion 2001-09-27 09:30:24.0
has radiation at surface which is diffused out from the hotter core
has energy source gravitational contraction and or fusion
has energy production which takes place primarily within the core
has surface density which depends on luminosity class
has surface temperature greater than 1000 Kelvin 2001-09-27 09:30:24.0
has apparent magnitude 2001-09-27 09:30:25.0
has absolute magnitude
has age
has catalog star catalog
has material hydrogen, helium
has velocity determined from proper motion and radial velocity

dwarf has symbol d 2001-09-27 09:30:52.0
has luminosity class V

celestial body has spectra 2001-09-27 09:30:09.0

variable has name designated with
R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name
RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted
AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted
V 335, V 336, etc., when the double letter designations are exhausted
2001-09-27 09:30:34.0
has observational problem some difficulty in distinguishing between various kinds
has observable variation time scale within a period of decades has URL: http://www.aavso.org, 2001-09-27 09:30:34.0
has light curve
has optical brightness variation 0.2 magnitudes or greater
has amplitude

physical object has location or center of gravity 2001-09-27 09:27:27.0
has angular momentum
has momentum
has temperature
has volume
has extent

Next flare star: UV Ceti Up: flare star Previous flare star: Wolf 359

Proxima Centauri	has spectral type dM4e
	has parallax 0'.765
	has distance 4.25 light-years
	has radius R = 1.3 × 10¹⁰ cm
	has bolometric magnitude M _bol = 11.66
	is a part of Centaurus
	has mass M = 0.1 M_sun
	has definition An flare star probably associated with the alpha Centauri system. It is the closest star to the Sun.
	is an instance of flare star
flare star	has synonym UV Ceti star
red dwarf	has abundance 70 percent of all stars
cataclysmic variable	has peak brightness
	has recovery time
	has outburst start time
	has acronym CV
star	has star surface temperature
	has V magnitude
	has B magnitude
	has U magnitude
	has position on celestial sphere from the point of view of Earth
	has proper motion
	has radiation at surface which is diffused out from the hotter core
	has energy source gravitational contraction and or fusion
	has energy production which takes place primarily within the core
	has surface density which depends on luminosity class
	has surface temperature greater than 1000 Kelvin
	has apparent magnitude
	has absolute magnitude
	has age
	has catalog star catalog
	has material hydrogen, helium
	has velocity determined from proper motion and radial velocity
dwarf	has symbol d
dwarf	has luminosity class V
celestial body	has spectra
variable	has name designated with R, S, T, U, V, W, X, Y, or Z and the genitive of the latin constellation name RR, RS, RT, RU, RV, RW, RX, RY, or RZ and the genitive of the latin constellation name when the single letter designations are exhausted AA...AZ, BB...BZ, etc. (omitting J), which ends with QQ...QZ and the genitive of the latin constellation namewhen the RR...RZ designations are exhausted V 335, V 336, etc., when the double letter designations are exhausted
	has observational problem some difficulty in distinguishing between various kinds
	has observable variation time scale within a period of decades
	has light curve
	has optical brightness variation 0.2 magnitudes or greater
	has amplitude
physical object	has location or center of gravity
	has angular momentum
	has momentum
	has temperature
	has volume
	has extent