|Discovered by||Heinrich Louis d'Arrest|
|Discovery date||June 28, 1851|
|1678 R1, 1851 M1, 1857 X1,
1923b, 1950a, 1963f,
1970d, 1976e, 1982e,
|Orbital characteristics A|
|Semi-major axis||3.495 AU|
|Orbital period||6.54 a|
|Last perihelion||August 14, 2008|
|Next perihelion||March 2, 2015|
6P/d'Arrest (also known as d'Arrest's Comet or Comet d'Arrest) is a periodic Jupiter-family comet in the Solar System, orbiting between Mars and Jupiter. It passed 0.15124 AU (22,625,000 km; 14,059,000 mi) from the Earth on August 12, 1976.
The comet next comes to perihelion (closest approach to the Sun) on March 2, 2015, but it will be an unfavorable apparition as it will be have a solar elongation of less than 30 degrees from October 2014 until May 2015.
In 1991, Andrea Carusi and Giovanni B. Valsecchi (Istituto Astrofisica Spaziale, Rome), and Ľubor Kresák and Margita Kresáková (Slovak Astronomical Institute, Bratislava) independently suggested this comet was the same as a comet observed by Philippe de La Hire in 1678.
It was first observed by Heinrich Ludwig d'Arrest, in Leipzig, Germany, on 28th and 30th of June 1851.
- Syuichi Nakano (May 28, 2008). "6P/d'Arrest (NK 1625)". OAA Computing and Minor Planet Sections. Retrieved February 18, 2012.
- "JPL Small-Body Database Browser: 6P/d'Arrest" (last observation: 2014-03-10). Jet Propulsion Laboratory. Retrieved February 25, 2010.
- "JPL Close-Approach Data: 6P/d'Arrest" (last observation: 2014-03-10). Retrieved February 22, 2012.
- Seiichi Yoshida (2014-03-16). "6P/d'Arrest". Seiichi Yoshida's Comet Catalog. Retrieved 2014-10-29.
- "Elements and Ephemeris for 6P/d'Arrest". Minor Planet Center. Retrieved 2014-10-29. (0006P)
- Kronk, Gary W. (2001–2005). "6P/d'Arrest". Archived from the original on June 22, 2006. Retrieved June 7, 2006. (Cometography Home Page)
- Carusi, A.; Valsecchi, G. B.; Kresák, Ľ.; Kresáková, M.; and Sitarski, G., Periodic Comet d'Arrest = Comet la Hire (1678), IAU Circular 5283, 1 (1990)
- Orbital simulation from JPL (Java) / Horizons Ephemeris
- 6P/d'Arrest at CometBase database
- Elements and Ephemeris for 6P/d'Arrest – Minor Planet Center
- 6P/d'Arrest – Seiichi Yoshida @ aerith.net
- 6P – Gary W. Kronk's Cometography
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