NGC 2403 is an intermediate spiral galaxy in the constellation Camelopardalis. It has a H II nucleus.[3] It was discovered by William Herschel in 1788. NGC 2403 is an outlying member of the M81 Group,[2] and is approximately 8 million light-years distant. The northern spiral arm connects to NGC 2404.[2] It may be easily seen using 10 × 50 binoculars.[2]