| NGC 6440 | |
| Class: | V |
| Epoch: | J2000 |
| Constellation: | Sagittarius |
| Dist Ly: | 27.7 kly (8.5 kpc)[1] |
| Appmag V: | 10.10 |
| Radius Arcminsec: | 3.15' x 3.15' |
| Metal Fe: | -0.36[2] |
| Names: | GCl 77, 1FGL J1748.7-2020, MXB 1746-20 |
NGC 6440 is a globular cluster in the constellation Sagittarius discovered by William Herschel on 28 May 1786. It has an apparent magnitude of around 10, with a diameter of about 6 arcminutes, and its Shapley–Sawyer Concentration Class is V.[3]