Comets in 2007

comet

comet

astronomical object

Comet 96P/Machholz, also known as Machholz 1 is a periodic sunskirting comet discovered on 12 May 1986, by amateur astronomer Donald Machholz on Loma Prieta peak, in central California using binoculars. On 6 June 1986, 96P/Machholz passed from the Earth. 96P/Machholz last came to perihelion on January 31, 2023. The comet has an estimated diameter of around .

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.

astronomical object

108P/Ciffréo is a Jupiter-family comet with an orbital period of 7.25 years around the Sun. It is the only comet discovered by French astronomer, Jacqueline Ciffréo. The comet is noted for having a peculiar double morphology, in which the nucleus is accompanied by a comoving, detached, diffuse tail, which is probably a perspective artifact of particles ejected sunwards and then repelled by solar wind.

Comet Arend or 50P/Arend is a periodic comet in the Solar System which was discovered on October 4, 1951. It was discovered by astronomer Sylvain Julien Victor Arend at the Royal Observatory of Belgium located in the municipality of Uccle. The comet was illustrated at approximately a magnitude of 14 and also exhibited a nucleus within a coma 14 arc seconds across. It has been observed on its every subsequent apparition since discovery, with the most recent one occurred in 2024. The comet's next perihelion will be in the year 2032.

156P/Russell–LINEAR is a Jupiter-family comet with an orbital period of 6.4 years. It was discovered by Kenneth S. Russell in September 1986.

99P/Kowal, also known as Kowal 1, is a periodic comet in the Solar System that orbits out by Jupiter and has a 15 year orbital period. It has been observed regularly since 2019. Its most recent perihelion occurred in April 2022, and it is expected to return by May 2037.

136P/Mueller, also known as Mueller 3, is a periodic comet in the Solar System.

astronomical object

comet

astronomical object

comet

periodic comet

333P/LINEAR is a Jupiter-family comet in an 8.7-year retrograde orbit around the Sun. Upon discovery, it was the object with the shortest known retrograde orbit. The comet was discovered by LINEAR on 4 November 2007.

non-periodic comet

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.