4P/Faye
 | |
| Discovery | |
|---|---|
| Discovered by | Hervé Faye |
| Discovery date | November 23, 1843 |
| Designations | |
| P/1843 W1, P/1850 W1, 1910e | |
| Orbital characteristics | |
| Epoch | 2021-09-23[1] (JD2459480.5) |
| Aphelion | 6.03AU[1] |
| Perihelion | 1.619 AU |
| Semi-major axis | 3.824 AU |
| Eccentricity | 0.5767 |
| Orbital period | 7.48a |
| Inclination | 8.013° |
| Last perihelion | 2021-Sep-08[1] May 29, 2014 November 15, 2006 |
| Next perihelion | 2029-Mar-09[2](JPL Horizons) |
| TJupiter | 2.737 |
| EarthMOID | 0.56 AU (84 million km) |
| Physical characteristics | |
| Dimensions | 3.54 km[3] |
| Perihelion distance at different epochs[4] | |||||||
| Epoch | Perihelion (AU) | ||||||
|---|---|---|---|---|---|---|---|
| 1806 | 1.74 | ||||||
| 1843 | 1.69 | ||||||
| 1984 | 1.59 | ||||||
| 2102 | 1.51 | ||||||
Comet 4P/Faye(also known asFaye's CometorComet Faye) is aperiodicJupiter-family cometdiscovered in November 1843 byHervé Fayeat theRoyal ObservatoryinParis.Its most recentperihelia(closest approaches to the Sun) were on November 15, 2006; May 29, 2014;[5]and September 8, 2021.[1]
The comet was first observed by Faye on November 23, but bad weather prevented its confirmation until the 25th.[6]It was so faint that it had already passedperihelionabout a month before its discovery, and only a close pass by theEarthhad made it bright enough for discovery.Otto Wilhelm von Struvereported that the comet was visible to the naked eye at the end of November.[6]It remained visible for smaller telescopes until January 10, 1844, and was finally lost to larger telescopes on April 10, 1844.[6]
In 1844,Friedrich Wilhelm Argelander[7]andThomas James Henderson[8]independently computed that the comet was a short-period comet; by May, its period had been calculated to be 7.43 years.[6]Urbain Le Verriercomputed the positions for the 1851 apparition, predicting perihelion in April 1851.[6]The comet was found close to his predicted position on November 29, 1850, byJames Challis.[6]
The comet was missed during its apparitions in 1903 and 1918 due to unfavorable observing circumstances.[6]It reached a brightness of about 9thmagnitudein 2006.[9]
4P/Faye has a close approach to Jupiter every 59.3 years, which is gradually reducing its perihelion and increasing its orbital eccentricity. In the most recent close approach to Jupiter (March 2018), Faye's perihelion changed from about 1.7 AU to about 1.5 AU.[10]
Thecomet nucleusis estimated to be about 3.5 km in diameter.[11]
- Orbit of Comet 4P/Faye.
-
References
[edit]- ^abcd"4P/Faye Orbit".Minor Planet Center.Retrieved2014-06-16.
- ^"Horizons Batch for 4P/Faye (90000117) on 2029-Mar-09"(Perihelion occurs when rdot flips from negative to positive).JPL Horizons.Retrieved2022-06-15.(JPL#K212/23 Soln.date: 2022-Jun-08)
- ^"JPL Small-Body Database Browser: 4P/Faye"(last observation: 2014-01-29 last obs).Jet Propulsion Laboratory.Retrieved2014-10-29.
- ^Kinoshita, Kazuo (2015-06-12)."4P/Faye past, present and future orbital elements".Comet Orbit.Archivedfrom the original on 2011-05-20.Retrieved2023-07-20.
- ^Syuichi Nakano(2011-11-01)."4P/Faye (NK 2145)".OAA Computing and Minor Planet Sections.Retrieved2012-02-18.
- ^abcdefgKronk, Gary W.(2001–2005)."4P/Faye".Retrieved2005-12-25.(Cometography Home Page)
- ^Argelander, Friedrich W.A. (January 3, 1844). "Schreiben des Herrn Professors Argelander, Directors der Sternwarte in Bonn, an den Herausgeber".Astronomische Nachrichten.21(495): 225–226.Bibcode:1844AN.....21..225A.doi:10.1002/asna.18440211502.
- ^Henderson, Thomas J. (January 10, 1844)."On the Orbit of the Comet of Faye".Monthly Notices of the Royal Astronomical Society.6(3): 18–20.doi:10.1093/mnras/6.3.18b.
- ^Seiichi Yoshida (2008-10-12)."4P/Faye (2006)".Seiichi Yoshida's Comet Catalog.Archivedfrom the original on 13 October 2007.Retrieved2007-09-24.
- ^"Comet of the month – 4P/Faye | British Astronomical Association".
- ^Lamy, P. L.; Toth, I.; Weaver, H. A.; A'Hearn, M. F.; Jorda, L. (December 2009)."Properties of the nuclei and comae of 13 ecliptic comets from Hubble Space Telescope snapshot observations".Astronomy & Astrophysics.508(2): 1045–1056.Bibcode:2009A&A...508.1045L.doi:10.1051/0004-6361/200811462.S2CID125249770.
External links
[edit]
- Orbital simulationfrom JPL (Java) /Horizons Ephemeris
- 4P/Faye at CometBase database
- 4P/Faye– Seiichi Yoshida @ aerith.net
- 4P/Faye history from Gary W. Kronk's Cometography
- 4P/Fayeat theMinor Planet Center's Database
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