4P/Faye

The comet was first observed by Faye on November 23, but bad weather prevented its confirmation until the 25th. It was so faint that it had already passed perihelion about a month before its discovery, and only a close pass by the Earth had made it bright enough for discovery. Otto Wilhelm von Struve reported that the comet was visible to the naked eye at the end of November. It remained visible for smaller telescopes until January 10, 1844, and was finally lost to larger telescopes on April 10, 1844.

In 1844, Friedrich Wilhelm Argelander{{cite journal

| last=Argelander | first=Friedrich W.A.

| title=Schreiben des Herrn Professors Argelander, Directors der Sternwarte in Bonn, an den Herausgeber

| journal=Astronomische Nachrichten | volume=21 | number=495

| date=January 3, 1844

| pages=225–226 | doi=10.1002/asna.18440211502

| bibcode=1844AN.....21..225A

}} and Thomas James Henderson{{cite journal

| last=Henderson | first=Thomas J.

| title=On the Orbit of the Comet of Faye

| journal=Monthly Notices of the Royal Astronomical Society | volume=6 | number=3

| date=January 10, 1844

| pages=18–20 | doi=10.1093/mnras/6.3.18b

| doi-access=free

}} independently computed that the comet was a short-period comet; by May, its period had been calculated to be 7.43 years. Urbain Le Verrier computed the positions for the 1851 apparition, predicting perihelion in April 1851. The comet was found close to his predicted position on November 29, 1850, by James Challis.

The comet was missed during its apparitions in 1903 and 1918 due to unfavorable observing circumstances. It reached a brightness of about 9th magnitude in 2006.

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.{{Cite web|url=https://www.britastro.org/node/26154/|title = Comet of the month – 4P/Faye | British Astronomical Association}}

The comet nucleus is estimated to be about 3.5 km in diameter.{{cite journal |last1=Lamy |first1=P. L. |last2=Toth |first2=I. |last3=Weaver |first3=H. A. |last4=A'Hearn |first4=M. F. |last5=Jorda |first5=L. |title=Properties of the nuclei and comae of 13 ecliptic comets from Hubble Space Telescope snapshot observations |journal=Astronomy & Astrophysics |date=December 2009 |volume=508 |issue=2 |pages=1045–1056 |doi=10.1051/0004-6361/200811462|bibcode=2009A&A...508.1045L |s2cid=125249770 |doi-access=free }}

Орбита кометы 4P.jpg

{{reflist

| refs =

{{cite web

|date=2011-11-01

|title=4P/Faye (NK 2145)

|publisher=OAA Computing and Minor Planet Sections

|author=Syuichi Nakano

|author-link=Syuichi Nakano

|url=http://www.oaa.gr.jp/~oaacs/nk/nk2145.htm

|access-date=2012-02-18}}

{{Cite web

|first=Gary W. |last=Kronk

|author-link=Gary W. Kronk

|date=2001–2005

|title=4P/Faye

|url=http://cometography.com/pcomets/004p.html

|access-date=2005-12-25}} ([http://cometography.com Cometography Home Page])

{{cite web

|date=2008-10-12

|title=4P/Faye (2006)

|publisher=Seiichi Yoshida's Comet Catalog

|author=Seiichi Yoshida

|url=http://www.aerith.net/comet/catalog/0004P/2006.html

|access-date=2007-09-24| archive-url= https://web.archive.org/web/20071013033031/http://aerith.net/comet/catalog/0004P/2006.html| archive-date= 13 October 2007 | url-status= live}}

{{cite web

|type=last observation: 2014-01-29 last obs

|title=JPL Small-Body Database Browser: 4P/Faye

|url=http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=4P

|publisher=Jet Propulsion Laboratory

|access-date=2014-10-29}}

{{cite web

|title=4P/Faye Orbit

|url=http://www.minorplanetcenter.net/db_search/show_object?object_id=4P

|publisher=Minor Planet Center

|access-date=2014-06-16}}

{{cite web

|title=Horizons Batch for 4P/Faye (90000117) on 2029-Mar-09

|publisher=JPL Horizons

|type=Perihelion occurs when rdot flips from negative to positive

|url=https://ssd.jpl.nasa.gov/horizons_batch.cgi?batch=1&COMMAND=%2790000117%27&START_TIME=%272029-Mar-01%27&STOP_TIME=%272029-Mar-20%27&STEP_SIZE=%273%20hours%27&QUANTITIES=%2719%27

|access-date=2022-06-15}} (JPL#K212/23 Soln.date: 2022-Jun-08)

{{cite web

|title=4P/Faye past, present and future orbital elements

|url=http://jcometobs.web.fc2.com/pcmtn/0004p.htm

|work=Comet Orbit

|first=Kazuo |last=Kinoshita

|date=2015-06-12

|archive-url=https://web.archive.org/web/20110520032357/http://jcometobs.web.fc2.com/pcmtn/0004p.htm

|archive-date=2011-05-20

|url-status=live

|access-date=2023-07-20}}

}}

{{Sister project links|d=Q1422981|c=category:4P/Faye|n=no|b=no|v=no|voy=no|s=no|wikt=no|q=no|species=no}}

• {{JPL Small Body|id=1000026}}
• [http://cometbase.net/en/observation/listObserv/136 4P/Faye at CometBase database]
• [http://www.aerith.net/comet/catalog/0004P/index.html 4P/Faye] – Seiichi Yoshida @ aerith.net
• [http://cometography.com/pcomets/004p.html 4P/Faye history from Gary W. Kronk's Cometography]
• [http://www.minorplanetcenter.net/db_search/show_object?object_id=4P&commit=Show 4P/Faye] at the Minor Planet Center's Database

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