| Discovery | |
|---|---|
| Discovered by | Kenneth S. Russell at the UK Schmidt Telescope, Australia |
| Discovery date | 16 June 1979 |
| Orbital characteristics | |
| Epoch | 2021-05-26 |
| Aphelion | 5.5 AU |
| Perihelion | 2.1 AU |
| Eccentricity | 0.44 |
| Orbital period | 7.5 yr |
| Inclination | 17.8° |
| Last perihelion | 2013-11-05? (unobserved) |
| Next perihelion | 2021-05-23?[1] (lost since 1985) |
83D/Russell (previously 83P/Russell) is a periodic lost comet in the Solar System with an orbital period of about 7.5 years. On the post-1988 orbit the comet probably does not get brighter than about apparent magnitude 21. The comet might come to perihelion in late May 2021, but the uncertainty in the comet's position is a few million km.