Bases: astropy.units.quantity.Quantity
A physical or astronomical constant.
These objects are quantities that are meant to represent physical constants.
Attributes Summary
| abbrev | A typical ASCII text abbreviation of the constant, also generally the same as the Python variable used for this constant. |
| cgs | If the Constant is defined in the CGS system return that instance of the constant, else convert to a Quantity in the appropriate CGS units. |
| name | The full name of the constant. |
| reference | The source used for the value of this constant. |
| si | If the Constant is defined in the SI system return that instance of the constant, else convert to a Quantity in the appropriate SI units. |
| system | The system of units in which this constant is defined (typically None so long as the constant’s units can be directly converted between systems). |
| uncertainty | The known uncertainty in this constant’s value. |
| unit | The unit(s) in which this constant is defined. |
Methods Summary
| copy() | Return a copy of this Constant instance. |
Attributes Documentation
A typical ASCII text abbreviation of the constant, also generally the same as the Python variable used for this constant.
If the Constant is defined in the CGS system return that instance of the constant, else convert to a Quantity in the appropriate CGS units.
The full name of the constant.
The source used for the value of this constant.
If the Constant is defined in the SI system return that instance of the constant, else convert to a Quantity in the appropriate SI units.
The system of units in which this constant is defined (typically None so long as the constant’s units can be directly converted between systems).
The known uncertainty in this constant’s value.
The unit(s) in which this constant is defined.
Methods Documentation
Return a copy of this Constant instance. Since they are by definition immutable, this merely returns another reference to self.