The Heart Nebula, IC 1805, Sharpless 2-190, lies some 7500 light years away from Earth and is located in the Perseus Arm of the Galaxy in the constellation Cassiopeia. It was discovered by William Herschel on 3 November 1787. This is an emission nebula showing glowing ionized hydrogen gas and darker dust lanes.
Distance to Earth: 7,500 light years
Radius: 100 light years
Magnitude: 18.3
Coordinates: RA 2h 33m 22s | Dec +61° 26′ 36″
Absolute magnitude (V): 6.5
Apparent dimensions (V): 150' x 150'