Comet 23P/Brorsen-Metcalf
Named after Theodor Johan Christian Ambders Brorsen, who discovered the comet on July 20, 1847 at Altona Observatory, Germany, and Joel Hastings Metcalf.
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| Classification | Halley-type Comet, NEO |
Osculating Orbital Elements
| Epoch | 2447800,5 |
| Semi major axis | 17,0692 AU |
| Period [Julian yrs] | 70,523 Julian years |
| Inclination | 19,334 ° |
| Eccentricity | 0,9720 |
| Lon. of ascending node | 311,585 ° |
| Argument of perihelion | 129,611 ° |
| Passage of perihelion | 1989-Sep-11.937433 |
| Aphelion distance | 33,6597 AU |
| Mean anomaly | 0,266 ° |
Physical Data
| Total magnitude (M1) | 7,8 |
| Total magnitude slope (k1) | 8 |
| Nuclear magnitude (M2) | 14 |
| Nuclear magnitude slope (k2) | 5 |
| Nuclear phase coefficient | 0,03 |
Discovery Circumstances
| Discoverer | Theodor Johan Christian Ambders Brorsen |
| Discovered | 1847-07-20 |
Data File
| Data File Name | 23P_Brorsen_Metcalf.aed |
| Data File Date | 2006-12-22 |
| Data File Size | 2714 kB |
| Covered Period | 1800,00 - 2100,00 |
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