Comet 1P/Halley
Named after Edmond Halley (1656-1742) who contributed to the first physical understanding of the nature of comets.
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| Classification | Halley-type Comet |
Osculating Orbital Elements
| Epoch | 2449400,5 |
| Semi major axis | 17,8341 AU |
| Period [Julian yrs] | 75,316 Julian years |
| Inclination | 162,263 ° |
| Eccentricity | 0,9671 |
| Lon. of ascending node | 58,420 ° |
| Argument of perihelion | 111,332 ° |
| Passage of perihelion | 1986-Feb-05.895317 |
| Aphelion distance | 35,0823 AU |
| Mean anomaly | 38,384 ° |
Physical Data
| Radius | 5,50 km |
| Total magnitude (M1) | 5,5 |
| Total magnitude slope (k1) | 8 |
| Nuclear magnitude (M2) | 13,6 |
| Nuclear magnitude slope (k2) | 5 |
| Nuclear phase coefficient | 0,03 |
Discovery Circumstances
| Discoverer | Johann Georg Palitzsch |
| Discovered | 1758-12-25 |
Data File
| Data File Name | 1P_Halley.aed |
| Data File Date | 2006-12-22 |
| Data File Size | 6870 kB |
| Covered Period | 1600,00 - 2170,00 |
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