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102P/Shoemaker

From Wikipedia, the free encyclopedia

102P/Shoemaker
Discovery[1]
Discovered byCarolyn S. Shoemaker
Eugene M. Shoemaker
Discovery sitePalomar Observatory
Discovery date27 September 1984
Designations
P/1984 S2
P/1991 L2
  • Shoemaker 1[2]
  • 1984 XVI, 1991 XXIII
  • 1984q, 1991p
Orbital characteristics[3][4]
Epoch21 November 2025 (JD 2461000.5)
Observation arc37.35 years[a]
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[5]
TJupiter2.732
Earth MOID0.976 AU
Jupiter MOID0.191 AU
Physical characteristics[6]
Mean radius
0.208 km (0.129 mi)
Mean density
430±60 kg/m3
Comet total
magnitude (M1)		16.2[3]

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.[7] Images taken of it in 1999 were not recognized until 2006 when it was once again observed.[8] It was unexpectedly dim in each of these returns.

Notes

[edit]
  1. ↑ Observation arc from the Minor Planet Center database covering dates from 1 September 1984 until 6 January 2022.

References

[edit]
  1. 1 2 C. S. Shoemaker; E. M. Shoemaker (4 October 1984). D. W. Green (ed.). "Comet Shoemaker (1984q)". IAU Circular. 3997 (1). Bibcode:1984IAUC.3997....1S.
  2. ↑ "Periodic Comet Names and Designations". Planetary Data System: Small Body Node. NASA. Retrieved 6 September 2026.
  3. 1 2 "102P/Shoemaker 1 – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 14 January 2026.
  4. ↑ "102P/Shoemaker Orbit". Minor Planet Center. Retrieved 17 June 2014.
  5. ↑ "Horizons Batch for 102P/Shoemaker 1 (90000944) on 2028-Jul-10" (Perihelion occurs when rdot flips from negative to positive). JPL Horizons. Retrieved 13 September 2021. (JPL K213/2 Soln.date: 2022-Feb-06)
  6. ↑ M. L. Paradowski (2022). "A New Indirect Method of Determining Density of Cometary Nuclei" (PDF). Acta Astronomica. 72 (2): 141–159. Bibcode:2022AcA....72..141P. doi:10.32023/0001-5237/72.2.4. ISSN 0001-5237.
  7. ↑ P. M. Kilmartin; A. C. Gilmore (11 June 1991). "Periodic Comet Shoemaker 1 (1991p)". IAU Circular. 5286 (1). Bibcode:1991IAUC.5286....1K.
  8. ↑ K. Sarneczky; L. Kiss; P. Birtwhistle; B. G. Marsden (July 2006). "Comet 102P/Shoemaker". Minor Planet Electronic Circulars. 2006-O54. Bibcode:2006MPEC....O...54S.
[edit]
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