Mass:	1.674 927 29(28) × 10−27 kg
	939.565 560(81) MeV/c²
Radius:	about 0.8 × 10−15 m
Electric charge:	0 C
Spin:	½
Magnetic dipole moment:	-1.91304273(45) μN
Quark composition:	2 Down, 1 Up