4015 Wilson–Harrington
4015 Wilson–Harrington at 19 November 1949, from the 48-inch Schmidt telescope at Palomar. The image was enhanced by ESO to show the tail. | |
| Discovery | |
|---|---|
| Discovered by | Albert G. Wilson and Robert G. Harrington |
| Discovery date | 19 November 1949 |
| Designations | |
| (4015) Wilson–Harrington | |
| 107P/1949 W1 107P/1979 VA 1949 III · 1949g | |
| NEO · Apollo · Comet | |
| Orbital characteristics | |
| Epoch 2022-Aug-09 (JD 2459800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 24241 days (66.37 yr) |
| Aphelion | 4.2833 AU (640.77 Gm) |
| Perihelion | 0.96664 AU (144.607 Gm) |
| 2.6249 AU (392.68 Gm) | |
| Eccentricity | 0.63175 |
| 4.25 yr (1553.4 d) | |
Average orbital speed | 16.39 km/s |
| 356.37° | |
| 0° 13m 47.568s / day | |
| Inclination | 2.7992° |
| 266.77° | |
| 2026-Nov-25 2022-Aug-24 (previous) | |
| 95.441° | |
| Earth MOID | 0.045552 AU (6.8145 Gm) |
| TJupiter | 3.080 |
| Physical characteristics | |
| Dimensions | 4 km |
| 2 ± 0.25 km | |
| 3.5736 h (0.14890 d) | |
| 0.05 ± 0.01 | |
| (orange) B−V=0.666 U−B=0.279 | |
| ~11 (1979) 16 (2009) | |
| 15.99 | |
4015 Wilson–Harrington is an active asteroid known both as comet 107P/Wilson–Harrington and as asteroid 4015 Wilson–Harrington. It passed 0.4 AU (60 million km) from Earth on 20 July 2022 and then passed perihelion (closest approach to the Sun) on 24 August 2022. It seldom gets brighter than apparent magnitude 16. It will return to perihelion on 25 November 2026.