Encke-type comets

periodic comet

311P/PanSTARRS, also known as P/2013 P5 (PanSTARRS), is an active asteroid and Encke-type comet discovered by Bryce T. Bolin using the Pan-STARRS telescope on 27 August 2013. Observations made by the Hubble Space Telescope revealed that it had six comet-like tails. The tails are suspected to be streams of material ejected by the asteroid as a result of a rubble pile asteroid spinning fast enough to remove material from it. This is similar to 331P/Gibbs, which was found to be a quickly-spinning rubble pile as well.

{| class=wikitable style="text-align:center; font-size:11px; float:right; margin:2px" |- bgcolor= style="font-size: smaller;" | colspan="8" style="text-align:center;"|Perihelion distanceat different epochs |- ! Epoch !! Perihelion(AU) |- | 1929 || 5.68 |- | 1967 || 3.55 |- | 2026 || 4.84 |- | 2034 || 3.84 |}

111P/Helin–Roman–Crockett is an Encke-type comet with an 8.46-year orbit around the Sun. It was co-discovered by Eleanor and Ron Helin, Brian P. Roman and Randy L. Crockett on 5 January 1989 from images obtained about 1-2 days prior.

147P/Kushida–Muramatsu is a quasi-Hilda comet discovered in 1993 by Japanese astronomers Yoshio Kushida and Osamu Muramatsu.

87P/Bus is an Encke-type comet with a current orbital period of 6.37 years around the Sun. It is the only comet discovered by Australian astronomer, Schelte J. Bus.

116P/Wild, also known as Wild 4, is a periodic comet in the Solar System. It fits the definition of an Encke-type comet with (TJupiter > 3; a Jupiter).

129P/Shoemaker–Levy, also known as Shoemaker–Levy 3, is a periodic comet in the Solar System. It fits the definition of an Encke-type comet with (TJupiter > 3; a Jupiter), and is a quasi-Hilda comet.

238P/Read (P/2005 U1) is a main-belt comet discovered on 24 October 2005 by astronomer Michael T. Read using the Spacewatch 36-inch telescope on Kitt Peak National Observatory. It has an orbit within the asteroid belt and has displayed the coma of a traditional comet. It fits the definition of an Encke-type comet with (TJupiter > 3; a Jupiter).

94P/Russell 4 is a periodic comet in the Solar System.

82P/Gehrels is a periodic comet that was discovered on 27 October 1975, by Tom Gehrels at the Palomar Mountain Observatory in California having a faint nuclear brightness of magnitude 17.

412P/WISE is an Encke-type comet with a 5.5-year orbit around the Sun. It is the first of many comets discovered by the Wide-field Infrared Survey Explorer (WISE), and has since been followed by ground observatories, among them the Mauna Kea Observatory.

Wikimedia list article

331P/Gibbs (P/2012 F5) is a small periodic Encke-type and rare main-belt comet, discovered by American amateur astronomer Alex Gibbs.

266P/Christensen is a Encke-type comet with a 6.63-year orbit around the Sun. It will next come to perihelion in December 2026. It has been suggested as the possible source of the 1977 "Wow! Signal", however this was later disproven by a follow-up study in 2020, where it was found out to be likely a maser-like flare from small hydrogen clouds in interstellar space instead.

REDIRECT List of numbered comets#349P

disintegrated active main-belt asteroid

REDIRECT List of numbered comets#358P

REDIRECT List of numbered comets#313P

259P/Garradd is a Jupiter-family comet and active asteroid with an orbital period of 4.5 years. It was discovered in images obtained on 2 September 2008 as part of the Siding Spring Survey by Gordon J. Garradd.

comet