Amateur Astronomy, Part 3
21 entries in the Amateur Astronomy, Part 3 compendium.
Comet Ikeya–SekiA sungrazing comet that became one of the brightest in a millennium.C/1963 A1 (Ikeya)Long-period comet discovered by a 19-year-old amateur astronomer.C/1964 N1 (Ikeya)Long-period comet discovered by Kaoru Ikeya in 1964.C/1939 H1 (Jurlof–Achmarof–Hassel)Long-period comet discovered in 1939 with two associated meteor showers.C/1999 H1 (Lee)Non-periodic comet discovered by Steven Lee in 1999.C/2018 V1 (Machholz–Fujikawa–Iwamoto)A comet with a probable extrasolar origin, now escaping the Solar System.141P/MachholzA fragmented Jupiter-family comet with multiple observed components.C/2004 Q2 (Machholz)A bright non-periodic comet with an unusually distant perihelion.C/2023 P1 (Nishimura)Long-period comet discovered by Hideo Nishimura in August 2023.PH1bFirst transiting circumbinary planet found in a quadruple star system.Comet RyvesDiscovered by an amateur, it briefly rivaled Venus near the Sun.C/1962 C1 (Seki–Lines)Great Comet of 1962, discovered independently by two observers.C/1983 J1 (Sugano–Saigusa–Fujikawa)Fourth closest comet approach to Earth in the 20th century.C/1975 T2 (Suzuki–Saigusa–Mori)Long-period comet discovered by five Japanese observers in 1975.C/1969 T1 (Tago–Sato–Kosaka)First comet observed by an artificial satellite, OAO-2.P/2010 H2 (Vales)A distant Jupiter-family comet discovered during a massive outburst.C/1970 K1 (White–Ortiz–Bolelli)Bright Kreutz sungrazer discovered independently by three observers in 1970.C/1998 P1 (Williams)Non-periodic comet discovered by Peter F. Williams in 1998.Amateur Astronomers Association of PittsburghPittsburgh amateur astronomy club founded in 1929.American Association of Variable Star ObserversCoordinates amateur variable star observations for professional research.American Meteor SocietyNon-profit supporting amateur and professional meteor research since 1911.
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