astro.wikisort.org - Comet
23P/Brorsen–Metcalf is a periodic comet with an orbital period of 70 years. It fits the classical definition of a Halley-type comet with (20 years < period < 200 years).[1] It was first discovered by Theodor Brorsen at the Altona Observatory on July 20, 1847, and again by Kaspar Schweizer (Moscow) on August 11, 1847. It was predicted that it would reappear between 1919 and 1922.
| Discovery | |
|---|---|
| Discovered by | Theodor Brorsen and Joel Metcalf |
| Discovery date | July 20, 1847 |
| Alternative designations | 1847 O1, 1919 Q1, 1989 N1 |
| Orbital characteristics A | |
| Epoch | October 1, 1989 |
| Aphelion | 33.65 AU |
| Perihelion | 0.478 AU |
| Semi-major axis | 17.07 AU |
| Eccentricity | 0.972 |
| Orbital period | 70.52 a[1] |
| Inclination | 19.33° |
| Last perihelion | September 11, 1989[1] |
| Next perihelion | June 8, 2059[2][3] |
On August 21, 1919, the comet was recovered by Joel Hastings Metcalf (Camp Idlewild, Vermont, United States) as 8th magnitude. Additional discoveries were made by Edward Barnard (Yerkes Observatory, Wisconsin, United States) on August 22, Michel Giacobini (Paris, France), Ostrovlev (Theodosia, Crimea) and Selavanov (Saint Petersburg). By the end of September 1919 it was confirmed as being the same as Brorsen's comet.
References
- "JPL Small-Body Database Browser: 23P/Brorsen-Metcalf". Jet Propulsion Laboratory. Archived from the original on September 18, 2019. Retrieved October 17, 2011.
last obs. used 1989-09-09
- "Horizons Batch for 23P/Brorsen-Metcalf (90000342) on 2059-Jun-08" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 2022-06-27. (JPL#13 Soln.date: 2002-Mar-01)
- Seiichi Yoshida (2005-11-09). "23P/Brorsen-Metcalf". Seiichi Yoshida's Comet Catalog. Retrieved February 19, 2012.
External links
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 23P at Kronk's Cometography
- 23P at Kazuo Kinoshita's Comets
- 23P at Seiichi Yoshida's Comet Catalog
 | This comet-related article is a stub. You can help Wikipedia by expanding it. |
На других языках
- [en] 23P/Brorsen–Metcalf
[ru] 23P/Брорзена — Меткафа
Комета Брорзена — Меткафа (23P/Brorsen-Metcalf) — короткопериодическая комета типа Галлея, которая была открыта 20 июля 1847 года датским астрономом Теодором Брорзеном на утреннем небе в созвездии Овна. Он описал её как слабую туманность, без заметной конденсации в центре, и отметил её движение на северо-восток. Комета обладает довольно длительным периодом обращения вокруг Солнца — чуть более 70,5 лет.Другой контент может иметь иную лицензию. Перед использованием материалов сайта WikiSort.org внимательно изучите правила лицензирования конкретных элементов наполнения сайта.
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