|
META TOPICPARENT |
name="UnitsDesc" |
http://xml.openoffice.org/sx2ml)" />IAU Rec. | VizieR symbol | VizieR explanation | VizieR SI value | HEASARC symbol | GNU expression | GNU aliases | Note | | | % | percent | 0.01 | | percent | % | | | A | A | Ampere | A | A | A | ampere, amp | | | a | a | year | 3.15576×10+7s | | see yr | | | | | a0 | (Bohr radius) | 5.29177×10-11m | | bohrradius | atomiclength | | | | al | light-year | 9.46053×10+15m | | lightyear | ly | | | | alpha | (fine structure constant) | 7.29735×10-3 | | alpha | | | | Å $-1ó¡ | Angstrom | ?Angstroem(0.1nm) | 10-10m | angstrom | angstrom | ångström, Å | | | | Å | ?Angstroem(0.1nm) | 10-10m | | see Angstrom | | | | ' | arcmin | minute of arc | 4.62963×10-5 | arcmin | arcmin | arcminute, ' | | | " | arcsec | second of arc | 7.71605×10-7 | arcsec | arcsec | arcsecond, " | | | atm $-1ó¡ | atm | ?atmosphere | 1.01325×10+5Pa (kg·m-1·s-2) | | atm | atmosphere | | | | AU | astronomical unit | 1.49598×10+11m | AU | see au | | | | au | au | astronomical unit | 1.49598×10+11m | | astronomicalunit | au | | | bar $-1ó¡ | bar | ?bar(10+5Pa) | 10+5Pa (kg·m-1·s-2) | | bar | | | | b $-1ó¡ | barn | barn(10-28m2) | 10-28m+2 | barn | barn | | | | | bit | binary information unit | | | bit | | | | | byte | byte(8bits) | | byte | byte | B | | | C | C | Coulomb | C (s·A) | C | coulomb | C | | | | c | c(speed_of_light) | 2.99792×10+8m·s-1 | | c | light | | | cal $-1ó¡ | cal | ?calorie | 4.1854J (kg·m+2·s-2) | | cal_IT | cal, calorie, calorie_IT | 1 | | cd | cd | candela(lumen/sr) | cd | cd | cd | candela | | | | ct | count | | count | ??? | | | | | D | Debye (dipole) | 3.33333×10-30m·s·A | | debye | | | | d | d | day | 8.64×10+4s | d | day | d, da | | | o | deg | degree | 2.77778×10-3 | deg | degree | arcdeg | | | oC | degC | Celsius | K | | degC | degcelsius | | | | degF | ?Fahrenheit | 5.55556×10-1K | | degF | degfahrenheit | | | dyn $-1ó¡ | dyn | ?dyne(10-5N) | 10-5N (kg·m·s-2) | | dyne | dyn | | | | e | e(electron_charge) | 1.60218×10-19C (s·A) | | e | | | | | eps0 | (electric constant) | 8.85419×10-12kg-1·m-3·s+4·A+2 | | epsilon0 | | | | erg $-1ó¡ | erg | ?erg(10-7J) | 10-7J (kg·m+2·s-2) | erg | erg | | | | eV | eV | electron-Volt | 1.60218×10-19J (kg·m+2·s-2) | eV | eV | electronvolt, ev | | | F | F | Farad | F (kg-1·m-2·s+4·A+2) | F | farad | F | | | | G | G(gravitation constant) | 6.673×10-11kg-1·m+3·s-2 | | G | | | | | g | gram | 10-3kg | | gram | gm, g, gramme | | | G $-1ó¡ | gauss | ?Gauss(10-4T) | 10-4T (kg·s-2·A-1) | G | gauss | Gs | 2 | | | geoMass | Earth mass | 5.976×10+24kg | | earthmass | | | | H | H | Henry | H (kg·m+2·s-2·A-2) | H | henry | H | | | h | h | hour | 3.6×10+3s | h | see hr | | 3 | | | hr | ?hour(use 'h') | 3.6×10+3s | | hour | hr | | | | \h | hbar(Planck constant) | 1.05457×10-34kg·m+2·s-1 | | hbar | spin, atomicaction | | | Hz | Hz | Herz | Hz (s-1) | Hz | Hz | hz | | | | inch | ?inch | 2.54×10-2m | | inch | in | | | J | J | Joule | J (kg·m+2·s-2) | J | joule | J | | | | JD | Julian Day | 8.64×10+4s | | ??? | | | | | jovMass | Jupiter mass | 1.902×10+27kg | | jupitermass | | | | Jy | Jy | Jansky(10-26W/m2/Hz) | 10-26kg·s-2 | Jy | fluxunit | jansky, Jy | | | K | K | Kelvin | K | K | K | kelvin | | | | k | k(Boltzmann) | 1.38065×10-23kg·m+2·s-2·K-1 | | boltzmann | k | | | kg | kg | kilogram | kg | kg | kg | kilogram | | | | l | ?litre | 10-3m+3 | | liter | l, litre | | | lm | lm | lumen | 7.95775×10-2cd | lm | lumen | lm | | | lx | lx | lux(lm/m2) | 7.95775×10-2m-2·cd | lx | lux | lx | | | | lyr | ?light-year (c*yr) | 9.46053×10+15m | lyr | see al | | | | m | m | metre | m | m | m | meter, metre | | | mag $-1ó | mag | magnitude | mag | mag | ??? | | | | mas $-1ó | mas | milli-second of arc | 7.71605×10-10 | | mas | | | | | me | me(electron_mass) | 9.10938×10-31kg | | electronmass | m_e | | | min | min | minute | 6×10+1s | min | minute | min | | | | MJD | Mod. Julian Date (JD-2400000.5) | 8.64×10+4s | | ??? | | | | | mmHg | ?mercury_mm | 1.33322×10+2Pa (kg·m-1·s-2) | | mmHg | torr | | | mol | mol | mole | mol | mol | mol | mole | | | | month | ?month | | | month | mo | | | | mp | mp(proton_mass) | 1.67266×10-27kg | | protonmass | m_p | | | | mu0 | (magnetic constant) | 1.25664×10-6kg·m·s-2·A-2 | | mu0 | | | | | muB | (Bohr magneton) | 9.27401×10-28m+2·A | | bohrmagneton | mu_B | | | N | N | Newton | N (kg·m·s-2) | N | newton | N | | | $-1§© | Ohm | Ohm(V/A) | Ohm (kg·m+2·s-3·A-2) | ohm | ohm | | | | Pa | Pa | Pascal | Pa (kg·m-1·s-2) | Pa | pascal | Pa | | | pc | pc | parsec | 3.0857×10+16m | pc | parsec | pc | | | | ph | photon | | photon | ??? | | | | | pi | pi(3.14...) | 3.14159 | | pi | | | | | pix | pixel | | pixel | ??? | | | | | R | R(gas_constant) | 8.3143kg·m+2·s-2·K-1·mol-1 | | gasconstant | R | | | rad | rad | radian | 1.59155×10-1 | rad | radian | | 4 | | | Ry | Rydberg(13.6eV) | 2.17989×10-18J (kg·m+2·s-2) | | rydberg | | | | S | S | Siemens(A/V) | S (kg-1·m-2·s+3·A+2) | S | siemens | S, mho | | | s | s | second | s | s | s | second, sec | | | | sec | ?second (use 's') | s | | see s | | | | | solLum | solar luminosity | 3.826×10+26W (kg·m+2·s-3) | | ??? | | 5 | | Mo | solMass | solar mass | 1.989×10+30kg | | solarmass | sunmass | | | | solRad | solar radius | 6.9599×10+8m | | sunradius | | | | sr | sr | steradian | 7.95775×10-2 | sr | sr | steradian | | | | Sun | Solar unit | | | ??? | | | | T | T | Tesla | T (kg·s-2·A-1) | T | tesla | T | | | | t | ?ton | 10+3kg | | tonne | t, metricton | | | u | u | atomic mass unit | 1.66054×10-27kg | | atomicmassunit | u, amu | | | | uas | micro-second of arc | 7.71605×10-13 | | ??? | | | | V | V | Volt | V (kg·m+2·s-3·A-1) | V | volt | V | | | W | W | Watt | W (kg·m+2·s-3) | W | watt | W | | | Wb | Wb | Weber(V·s) | Wb (kg·m+2·s-2·A-1) | Wb | weber | Wb | | | | yr | year | 3.15576×10+7s | yr | tropicalyear | year, yr | | | | µ0 | (magnetic constant) | 1.25664×10-6kg·m·s-2·A-2 | | see mu0 | | | | | µas | micro-second of arc | 7.71605×10-13 | | see uas | | | | | | | | | | | | | | | | | | | | | | | IAU | http://www.iau.org/Units.234.0.html?&0 | | | | | | | | VizieR old | http://vizier.u-strasbg.fr/doc/catstd-3.2.htx | | | | | | | | VizieR cgi | http://vizier.u-strasbg.fr/cgi-bin/Unit?%3f | | | | | | | | GNU Units | http://www.gnu.org/software/units/ | | | | | | | | HEASARC | http://heasarc.nasa.gov/docs/journal/units4.html | | | | | | | | | | | | | | | | | 1 | Slightly ambiguous definition of cal... | | | | | | | | 2 | Gs ambiguous | | | | | | | | 3 | h is Planck constant in GNU | | | | | | | | 4 | rad is a radioactive unit in GNU | | | | | | | | 5 | sunlum in GNU is luminance on earth | | | | | | | | | | | | | | | | | | $-1ó = discussed in text | | | | | | | | | $-1ó¡ = deprecated | | | | | | |
|
> > | IAU Rec. | VizieR symbol | VizieR explanation | VizieR SI value | HEASARC symbol | GNU expression | GNU aliases | Note | | | % | percent | 0.01 | | percent | % | | | A | A | Ampere | A | A | A | ampere, amp | | | a | a | year | 3.15576×10+7s | | see yr | | | | | a0 | (Bohr radius) | 5.29177×10-11m | | bohrradius | atomiclength | | | | al | light-year | 9.46053×10+15m | | lightyear | ly | | | | alpha | (fine structure constant) | 7.29735×10-3 | | alpha | | | | Å ‡ | Angstrom | ?Angstroem(0.1nm) | 10-10m | angstrom | angstrom | ångström, Å | | | | Å | ?Angstroem(0.1nm) | 10-10m | | see Angstrom | | | | ' | arcmin | minute of arc | 4.62963×10-5 | arcmin | arcmin | arcminute, ' | | | " | arcsec | second of arc | 7.71605×10-7 | arcsec | arcsec | arcsecond, " | | | atm ‡ | atm | ?atmosphere | 1.01325×10+5Pa (kg·m-1·s-2) | | atm | atmosphere | | | | AU | astronomical unit | 1.49598×10+11m | AU | see au | | | | au | au | astronomical unit | 1.49598×10+11m | | astronomicalunit | au | | | bar ‡ | bar | ?bar(10+5Pa) | 10+5Pa (kg·m-1·s-2) | | bar | | | | b ‡ | barn | barn(10-28m2) | 10-28m+2 | barn | barn | | | | | bit | binary information unit | | | bit | | | | | byte | byte(8bits) | | byte | byte | B | | | C | C | Coulomb | C (s·A) | C | coulomb | C | | | | c | c(speed_of_light) | 2.99792×10+8m·s-1 | | c | light | | | cal ‡ | cal | ?calorie | 4.1854J (kg·m+2·s-2) | | cal_IT | cal, calorie, calorie_IT | 1 | | cd | cd | candela(lumen/sr) | cd | cd | cd | candela | | | | ct | count | | count | ??? | | | | | D | Debye (dipole) | 3.33333×10-30m·s·A | | debye | | | | d | d | day | 8.64×10+4s | d | day | d, da | | | o | deg | degree | 2.77778×10-3 | deg | degree | arcdeg | | | oC | degC | Celsius | K | | degC | degcelsius | | | | degF | ?Fahrenheit | 5.55556×10-1K | | degF | degfahrenheit | | | dyn ‡ | dyn | ?dyne(10-5N) | 10-5N (kg·m·s-2) | | dyne | dyn | | | | e | e(electron_charge) | 1.60218×10-19C (s·A) | | e | | | | | eps0 | (electric constant) | 8.85419×10-12kg-1·m-3·s+4·A+2 | | epsilon0 | | | | erg ‡ | erg | ?erg(10-7J) | 10-7J (kg·m+2·s-2) | erg | erg | | | | eV | eV | electron-Volt | 1.60218×10-19J (kg·m+2·s-2) | eV | eV | electronvolt, ev | | | F | F | Farad | F (kg-1·m-2·s+4·A+2) | F | farad | F | | | | G | G(gravitation constant) | 6.673×10-11kg-1·m+3·s-2 | | G | | | | | g | gram | 10-3kg | | gram | gm, g, gramme | | | G ‡ | gauss | ?Gauss(10-4T) | 10-4T (kg·s-2·A-1) | G | gauss | Gs | 2 | | | geoMass | Earth mass | 5.976×10+24kg | | earthmass | | | | H | H | Henry | H (kg·m+2·s-2·A-2) | H | henry | H | | | h | h | hour | 3.6×10+3s | h | see hr | | 3 | | | hr | ?hour(use 'h') | 3.6×10+3s | | hour | hr | | | | \h | hbar(Planck constant) | 1.05457×10-34kg·m+2·s-1 | | hbar | spin, atomicaction | | | Hz | Hz | Herz | Hz (s-1) | Hz | Hz | hz | | | | inch | ?inch | 2.54×10-2m | | inch | in | | | J | J | Joule | J (kg·m+2·s-2) | J | joule | J | | | | JD | Julian Day | 8.64×10+4s | | ??? | | | | | jovMass | Jupiter mass | 1.902×10+27kg | | jupitermass | | | | Jy | Jy | Jansky(10-26W/m2/Hz) | 10-26kg·s-2 | Jy | fluxunit | jansky, Jy | | | K | K | Kelvin | K | K | K | kelvin | | | | k | k(Boltzmann) | 1.38065×10-23kg·m+2·s-2·K-1 | | boltzmann | k | | | kg | kg | kilogram | kg | kg | kg | kilogram | | | | l | ?litre | 10-3m+3 | | liter | l, litre | | | lm | lm | lumen | 7.95775×10-2cd | lm | lumen | lm | | | lx | lx | lux(lm/m2) | 7.95775×10-2m-2·cd | lx | lux | lx | | | | lyr | ?light-year (c*yr) | 9.46053×10+15m | lyr | see al | | | | m | m | metre | m | m | m | meter, metre | | | mag † | mag | magnitude | mag | mag | ??? | | | | mas † | mas | milli-second of arc | 7.71605×10-10 | | mas | | | | | me | me(electron_mass) | 9.10938×10-31kg | | electronmass | m_e | | | min | min | minute | 6×10+1s | min | minute | min | | | | MJD | Mod. Julian Date (JD-2400000.5) | 8.64×10+4s | | ??? | | | | | mmHg | ?mercury_mm | 1.33322×10+2Pa (kg·m-1·s-2) | | mmHg | torr | | | mol | mol | mole | mol | mol | mol | mole | | | | month | ?month | | | month | mo | | | | mp | mp(proton_mass) | 1.67266×10-27kg | | protonmass | m_p | | | | mu0 | (magnetic constant) | 1.25664×10-6kg·m·s-2·A-2 | | mu0 | | | | | muB | (Bohr magneton) | 9.27401×10-28m+2·A | | bohrmagneton | mu_B | | | N | N | Newton | N (kg·m·s-2) | N | newton | N | | | Ω | Ohm | Ohm(V/A) | Ohm (kg·m+2·s-3·A-2) | ohm | ohm | | | | Pa | Pa | Pascal | Pa (kg·m-1·s-2) | Pa | pascal | Pa | | | pc | pc | parsec | 3.0857×10+16m | pc | parsec | pc | | | | ph | photon | | photon | ??? | | | | | pi | pi(3.14...) | 3.14159 | | pi | | | | | pix | pixel | | pixel | ??? | | | | | R | R(gas_constant) | 8.3143kg·m+2·s-2·K-1·mol-1 | | gasconstant | R | | | rad | rad | radian | 1.59155×10-1 | rad | radian | | 4 | | | Ry | Rydberg(13.6eV) | 2.17989×10-18J (kg·m+2·s-2) | | rydberg | | | | S | S | Siemens(A/V) | S (kg-1·m-2·s+3·A+2) | S | siemens | S, mho | | | s | s | second | s | s | s | second, sec | | | | sec | ?second (use 's') | s | | see s | | | | | solLum | solar luminosity | 3.826×10+26W (kg·m+2·s-3) | | ??? | | 5 | | Mo | solMass | solar mass | 1.989×10+30kg | | solarmass | sunmass | | | | solRad | solar radius | 6.9599×10+8m | | sunradius | | | | sr | sr | steradian | 7.95775×10-2 | sr | sr | steradian | | | | Sun | Solar unit | | | ??? | | | | T | T | Tesla | T (kg·s-2·A-1) | T | tesla | T | | | | t | ?ton | 10+3kg | | tonne | t, metricton | | | u | u | atomic mass unit | 1.66054×10-27kg | | atomicmassunit | u, amu | | | | uas | micro-second of arc | 7.71605×10-13 | | ??? | | | | V | V | Volt | V (kg·m+2·s-3·A-1) | V | volt | V | | | W | W | Watt | W (kg·m+2·s-3) | W | watt | W | | | Wb | Wb | Weber(V·s) | Wb (kg·m+2·s-2·A-1) | Wb | weber | Wb | | | | yr | year | 3.15576×10+7s | yr | tropicalyear | year, yr | | | | µ0 | (magnetic constant) | 1.25664×10-6kg·m·s-2·A-2 | | see mu0 | | | | | µas | micro-second of arc | 7.71605×10-13 | | see uas | | | | | | | | | | | | | | | | | | | | | | | IAU | http://www.iau.org/Units.234.0.html?&0 | | | | | | | | VizieR old | http://vizier.u-strasbg.fr/doc/catstd-3.2.htx | | | | | | | | VizieR cgi | http://vizier.u-strasbg.fr/cgi-bin/Unit?%3f | | | | | | | | GNU Units | http://www.gnu.org/software/units/ | | | | | | | | HEASARC | http://heasarc.nasa.gov/docs/journal/units4.html | | | | | | | | | | | | | | | | | 1 | Slightly ambiguous definition of cal... | | | | | | | | 2 | Gs ambiguous | | | | | | | | 3 | h is Planck constant in GNU | | | | | | | | 4 | rad is a radioactive unit in GNU | | | | | | | | 5 | sunlum in GNU is luminance on earth | | | | | | | | | | | | | | | | | | † = discussed in text | | | | | | | | | ‡ = deprecated | | | | | | |
|