110P/Hartley
< 110P
Comet Hartley 3 imaged from the Zwicky Transient Facility on 20 November 2021 | |
| Discovery | |
|---|---|
| Discovered by | Malcolm Hartley |
| Discovery site | UK Schmidt Telescope |
| Discovery date | 19 February 1988 |
| Designations | |
| P/1988 D1 P/1993 M1 | |
| |
| Orbital characteristics | |
| Epoch | 25 February 2023 (JD 2460000.5) |
| Observation arc | 35.23 years |
| Number of observations | 3,998 |
| Aphelion | 4.752 AU |
| Perihelion | 2.455 AU |
| Semi-major axis | 3.604 AU |
| Eccentricity | 0.31870 |
| Orbital period | 6.841 years |
| Inclination | 11.705° |
| 287.52° | |
| Argument of periapsis | 167.46° |
| Mean anomaly | 71.255° |
| Last perihelion | 18 October 2021 |
| Next perihelion | 28 August 2028 |
| TJupiter | 2.990 |
| Earth MOID | 1.483 AU |
| Jupiter MOID | 0.478 AU |
| Physical characteristics | |
Mean radius | 2.31±0.03 km |
Mean density | 0.13±0.02 g/cm3 |
| 10.153±0.001 hours | |
| (V–R) = 0.67±0.09 | |
| Comet total magnitude (M1) | 4.3 |
| Comet nuclear magnitude (M2) | 13.3 |
Comet Hartley 3 is a periodic comet with a six-year orbit around the Sun. It is one of ten comets discovered by Australian astronomer, Malcolm Hartley.