7796 Járacimrman () is a dark Adeonian

asteroid An asteroid is a minor planet of the inner Solar System. Sizes and shapes of asteroids vary significantly, ranging from 1-meter rocks to a dwarf planet almost 1000 km in diameter; they are rocky, metallic or icy bodies with no atmosphere. ...

orbiting in the central region of the asteroid belt, approximately 11 kilometers in diameter. Discovered by Zdeněk Moravec at the Kleť Observatory in 1996, it was later named after

Jára Cimrman Jára Cimrman or Jára da Cimrman (officially Jaroslav Cimrman) (), also known as "the Master", is a fictional Czech polymath, created by Ladislav Smoljak, Jiří Šebánek and Zdeněk Svěrák. The fictional personality is presented as a univ ...

, a Czech fictional character.

Discovery

''Járacimrman'' was discovered by Zdeněk Moravec at the Kleť Observatory in the Czech Republic, on 16 January 1996 and was initially designated . Observations continued until April 1996, and then again between June and July 1997. The asteroid was later determined to be a lost asteroid which had previously been observed twice: at the Brera-Merate Observatory in northern Italy on 12 December 1973, and at Mount Stromlo Observatory, near Canberra, Australia, on 8 and 9 July 1990.

Classification and orbit

The asteroid is a member of the

Adeona family The Adeona or Adeonian family () is a large asteroid family that formed from the parent body 145 Adeona. Its spectral type is that of a carbonaceous C-type, with currently 2,236 asteroids identified as family members. Based upon simulation ...

(), a large family of carbonaceous asteroids. In 1997, ''Járacimrman''s orbit was calculated more precisely by additional observatories and it could therefore be numbered as asteroid 7796, the 312th recognized (numbered) asteroid discovered at the Kleť Observatory. Moravec suggested naming it after the fictional Czech polymath

Physical characteristics

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, ''Járacimrman'' measures 11.312 kilometers in diameter and its surface has an albedo of 0.055, which is typical for carbonaceous C-type asteroids. However, no spectral data is available for the asteroid, thus neither its chemical nor mineralogical composition is currently known. In addition, no rotational lightcurve has been obtained of ''Járacimrman'' as of 2017.

Naming

The citation accompanying the suggestion said: "Named for Jára Cimrman, a fictitious Czech genius. An analogue to Leonardo da Vinci, he was a playwright, composer, poet, painter, versatile scientist, inventor, polar explorer, sportsman, first man on the moon, etc. Although his name is not mentioned in any encyclopedia, his work is explored at the Jára Cimrman Theatre in Prague. This theatre is headed by the famous cimrmanologists Z. Svěrák and L. Smoljak, who endorsed the name proposal." The name was approved by International Astronomical Union (IAU) ''Committee on Small Body Nomenclature'' and published on 11 February 1998 ().

Discovery

Classification and orbit

Physical characteristics

Naming

References

External links