| C/1998 H1 (Stonehouse) | |
| Discoverer: | Patrick L. Stonehouse |
| Discovery Site: | Wolverine, Michigan |
| Discovery Date: | 22 April 1998 |
| Epoch: | 13 May 1998 (JD 2450946.5) |
| Observation Arc: | 91 days |
| Obs: | 407 |
| Aphelion: | 1,442.77 AU |
| Perihelion: | 1.487 AU |
| Semimajor: | 722.129 AU |
| Eccentricity: | 0.99794 |
| Period: | 19,405.77 years |
| Inclination: | 104.693° |
| Asc Node: | 222.109° |
| Arg Peri: | 1.325° |
| Tjup: | –0.376 |
| Earth Moid: | 0.4796 AU |
| Jupiter Moid: | 3.9427 AU |
| M1: | 10.0 |
| M2: | 14.5 |
| Magnitude: | 12.0 |
| Last P: | 14 April 1998 |
Comet Stonehouse, formally designated C/1998 H1, is a non-periodic comet discovered in April 22, 1998 by Patrick L. Stonehouse of Wolverine, Michigan, USA.
With a maximum brightness of about 12.0 in April/May 1998, Comet Stonehouse was too faint to be seen by the unaided eye, but it was a popular object for telescope-equipped comet watchers.