Discovery | |
---|---|
Discovered by | Henry L. Giclas |
Discovery date | September 8, 1978 |
Designations | |
1931 R1; 1978 R2; 1978 XXII; 1978k; 1985 M1; 1985 XV; 1985g; 1992 XXV | |
Orbital characteristics | |
Epoch | March 6, 2006 |
Aphelion | 5.443 AU |
Perihelion | 1.852 AU |
Semi-major axis | 3.647 AU |
Eccentricity | 0.4923 |
Orbital period | 6.965 a |
Inclination | 7.2810° |
Last perihelion | June 3, 2020 [1] July 23, 2013 [2] August 7, 2006 |
Next perihelion | 2027-Feb-12 [3] |
84P/Giclas is a periodic comet in the Solar System. The comet nucleus is estimated to be 1.8 kilometers in diameter. [4] In 1995 precovery images from three nights in September 1931 by Clyde W. Tombaugh were located. [5]
During the 2020 apparition it was not more than 60 degrees from the Sun until September 2020.
On 11 June 2033 the comet will pass 0.0387 AU (5,790,000 km ; 3,600,000 mi ) from the asteroid 4 Vesta. [6]
The nucleus of the comet has a radius of 0.90 ± 0.05 kilometers, assuming a geometric albedo of 0.04. [7]
32P/Comas Solà is a periodic comet with a current orbital period of 8.8 years.
Comet Grigg–Skjellerup is a periodic comet. It was visited by the Giotto probe in July 1992. The spacecraft came as close as 200 km, but could not take pictures because some instruments were damaged from its encounter with Halley's Comet. The comet next comes to perihelion on 25 December 2023, but will be 1.8 AU from Earth and only 31 degrees from the Sun.
Comet 4P/Faye is a periodic Jupiter-family comet discovered in November 1843 by Hervé Faye at the Royal Observatory in Paris. Its most recent perihelia were on November 15, 2006; May 29, 2014; and September 8, 2021.
28P/Neujmin, also known as Neujmin 1, is a large periodic comet in the Solar System. With a perihelion distance of 1.5AU, this comet does not make close approaches to the Earth.
36P/Whipple is a periodic comet in the Solar System. It is the lowest numbered Quasi-Hilda comet. It passed 0.25 AU (37 million km) from Jupiter in June 1922.
37P/Forbes is a periodic comet in the Solar System. It was discovered on August 1, 1929, by Alexander F. I. Forbes in South Africa.
41P/Tuttle–Giacobini–Kresák is a periodic comet in the Solar System. The comet nucleus is estimated to be 1.4 kilometers in diameter.
42P/Neujmin, also known as Neujmin 3, is a periodic comet 2 km in diameter.
48P/Johnson is a periodic comet in the Solar System.
49P/Arend–Rigaux is a periodic comet in the Solar System.
71P/Clark is a periodic comet in the Solar System with an orbital period of 5.5 years.
73P/Schwassmann–Wachmann, also known as Schwassmann–Wachmann 3 or SW3 for short, is a periodic comet that has a 5.4 year orbital period and that has been actively disintegrating since 1995. When it came to perihelion in March 2017, fragment 73P-BT was separating from the main fragment 73P-C. Fragments 73P-BU and 73P-BV were detected in July 2022. The main comet came to perihelion on 25 August 2022, when the comet was 0.97 AU from the Sun and 1 AU from Earth. It will be less than 80 degrees from the Sun from 25 May 2022 until August 2023. On 3 April 2025 it will make a modest approach of 0.3 AU to Jupiter. 73P will next come to perihelion on 23 December 2027 when it will be 0.92 AU from the Sun and on the far side of the Sun 1.9 AU from Earth.
78P/Gehrels, also known as Gehrels 2, is a Jupiter-family periodic comet in the Solar System with a current orbital period of 7.22 years.
98P/Takamizawa is a periodic comet in the Solar System.
101P/Chernykh is a periodic comet which was first discovered on August 19, 1977, by Nikolaj Stepanovich Chernykh. It will next come to perihelion in 2034.
167P/CINEOS (P/2004 PY42) is a large periodic comet and active, grey centaur, approximately 66 kilometers (41 miles) in diameter, orbiting the Sun outside the orbit of Saturn. It was discovered on August 10, 2004, by astronomers with the CINEOS survey at Gran Sasso in Italy. It is one of only a handful known Chiron-type comets.
118P/Shoemaker–Levy is a comet discovered by astronomers Carolyn and Eugene M. Shoemaker and David Levy.
1741 Giclas is a stony Koronis asteroid from the outer region of the asteroid belt, approximately 13 kilometers in diameter. It was discovered on 26 January 1960, by IU's Indiana Asteroid Program at Goethe Link Observatory near Brooklyn, Indiana, United States. It is named for astronomer Henry L. Giclas.
45P/Honda–Mrkos–Pajdušáková is a short-period comet discovered by Minoru Honda December 3, 1948. It is named after Minoru Honda, Antonín Mrkos, and Ľudmila Pajdušáková. The object revolves around the Sun on an elliptical orbit with a period of 5.25 years. The nucleus is 1.3 kilometers in diameter. On August 19 and 20, 2011, it became the fifteenth comet detected by ground radar telescope.
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. From its discovery, the comet has had 7 perihelions with its last return of Earth recorded on November 1, 2007. The comet's next perihelion will be in the year 2024.
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