21P/Giacobini–Zinner

Also known as Comet Giacobini-Zinner, 21P/Giacobinni–Zinner

{| 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) |- | 1894 || 1.23 |- | 1900 || 0.93 |- | 1985 || 1.03 |- | 2031 || 1.07 |- | 2078 || 0.97 |}

Key facts

Comet.name: 21P/Giacobini–Zinner
Comet.image: Comet 21P Giacobini-Zinner September 2018.jpg
Comet.caption: Comet Giacobini–Zinner photographed from Moscow, Russia on 9 September 2018.
Comet.discoverer: Michel GiacobiniErnst Zinner
Comet.discovery_date: 20 December 190023 October 1913
Comet.mpc_name: P/1900 Y1P/1913 U1
Comet.designations: 1900 III; 1913 V; 1926 VI;1933 III; 1940 I; 1946 V;1959 VIII; 1966 I; 1972 VI;1979 III; 1985 XIII; 1992 IX
Comet.epoch: 26 March 2025 (JD 2460760.5)
Comet.observation_arc: 4,922 days (13.48 years)
Comet.obs: 7,387
Comet.perihelion: 1.009 AU
Comet.aphelion

Article

5 sections

Contents

Physical properties
Exploration
2025 Perihelion
References
External links

Comet Giacobini–Zinner (officially designated as 21P/Giacobini–Zinner) is a periodic comet in the Solar System. It was discovered by Michel Giacobini, who observed it in the constellation of Aquarius on 20 December 1900. It was recovered two orbits later by Ernst Zinner, while he was observing variable stars near Beta Scuti on 23 October 1913.