102P/Shoemaker

Jupiter-family comet From Wikipedia, the free encyclopedia

102P/Shoemaker, also known as Shoemaker 1, is a Jupiter-family comet with a 7.47-year orbit around the Sun. It was first seen in 1984,[1] and then again in 1991.[6] Images taken of it in 1999 were not recognized until 2006 when it was once again observed.[7] It was unexpectedly dim in each of these returns.

DiscoveredbyCarolyn S. Shoemaker
Eugene Merle Shoemaker
DiscoverysitePalomar Observatory
Discoverydate27 September 1984
P/1984 S2
P/1991 L2
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102P/Shoemaker
Discovery[1]
Discovered byCarolyn S. Shoemaker
Eugene Merle Shoemaker
Discovery sitePalomar Observatory
Discovery date27 September 1984
Designations
P/1984 S2
P/1991 L2
  • Shoemaker 1
  • 1984 XVI, 1991 XXIII
  • 1984q, 1991p
Orbital characteristics[2][3]
Epoch21 November 2025 (JD 2461000.5)
Observation arc37.35 years
Earliest precovery date1 September 1984
Number of
observations		529
Aphelion5.562 AU
Perihelion2.079 AU
Semi-major axis3.821 AU
Eccentricity0.45582
Orbital period7.468 years
Inclination25.846°
339.35°
Argument of
periapsis		20.708°
Mean anomaly232.94°
Last perihelion22 January 2021
Next perihelion10 July 2028[4]
TJupiter2.732
Earth MOID0.976 AU
Jupiter MOID0.191 AU
Physical characteristics[2]
Mean radius
0.208 km (0.129 mi)[5]
Comet total
magnitude (M1)		16.2
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References

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