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92P/Sanguin

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92P/Sanguin
Discovery[1]
Discovered byJuan G. Sanguin
Discovery siteLeoncito, Argentina
Discovery date15 October 1977
Designations
P/1977 T2
P/1989 J1[2]
  • 1977 XII, 1990 IV
  • 1977p, 1989z
Orbital characteristics[3][4]
Epoch27 February 2015 (JD 2457080.5)
Observation arc38.33 years
Earliest precovery date13 September 1977
Number of
observations		1,001
Aphelion8.897 AU
Perihelion1.826 AU
Semi-major axis5.361 AU
Eccentricity0.65949
Orbital period12.413 years
Inclination19.444°
181.46°
Argument of
periapsis		163.80°
Mean anomaly359.82°
Last perihelion1 March 2015
Next perihelion15 July 2027
TJupiter2.410
Earth MOID0.826 AU
Jupiter MOID0.807 AU
Physical characteristics[3]
Mean diameter
2.38 km (1.48 mi)[5]
6.2 hours[6]
0.04 (assumed)[5]
Comet total
magnitude (M1)		11.1
Comet nuclear
magnitude (M2)		14.5

92P/Sanguin, also called Sanguin's Comet or Comet Sanguin, is a Jupiter-family comet discovered on 15 October 1977, by Juan G. Sanguin at Leoncito Astronomical Complex.[3]

Physical characteristics

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Initial estimates suggest that the comet completes a single rotation approximately once every 6 days,[7] however this was revised to just only 6.2 hours.[6]

The nucleus of the comet has a radius of about 1.19 km (0.74 mi) based on observations by the Keck Observatory, assuming a geometric albedo of 0.04.[5]

References

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  1. ↑ J. G. Sanguin; C. U. Cesco; H. E. Schuster (21 October 1977). B. G. Marsden (ed.). "Comet Sanguin (1977p)". IAU Circular. 3124 (1). Bibcode:1977IAUC.3124....1C.
  2. ↑ "Comet Names and Designations". International Comet Quarterly. Retrieved 22 July 2025.
  3. 1 2 3 "92P/Sanguin – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory. Retrieved 9 June 2024.
  4. ↑ "92P/Sanguin Orbit". Minor Planet Center. Retrieved 24 February 2019.
  5. 1 2 3 K. J. Meech; O. R. Hainaut; B. G. Marsden (2004). "Comet nucleus size distributions from HST and Keck telescopes". Icarus. 170 (2): 463–491. Bibcode:2004Icar..170..463M. doi:10.1016/j.icarus.2004.03.014.
  6. 1 2 B. E. A. Mueller; N. H. Samarasinha (2018). "Further Investigation of Changes in Cometary Rotation". The Astronomical Journal. 156 (3): 107–114. arXiv:1806.11158. Bibcode:2018AJ....156..107M. doi:10.3847/1538-3881/aad0a1.
  7. ↑ C. Snodgrass; A. Fitzsimmons; S. C. Lowry (2011). "The nuclei of comets 7P/Pons-Winnecke, 14P/Wolf and 92P/Sanguin" (PDF). Astronomy & Astrophysics. 444 (1): 287–295. arXiv:astro-ph/0509115. doi:10.1051/0004-6361:20053237. S2CID 119473563.
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