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'