92P/Sanguin

92P/Sanguin

Discovery
Discovered by	Juan G. Sanguin
Discovery date	15 October 1977
Designations
MPC designation	P/1977 T2 P/1989 J1 [1]
Alternative designations	1977 XII, 1990 IV 1977p, 1989z
Orbital characteristics [2] [3]
Epoch	27 February 2015 (JD 2457080.5)
Observation arc	38.33 years
Earliest precovery date	13 September 1977
Number of observations	1,001
Aphelion	8.897 AU
Perihelion	1.826 AU
Semi-major axis	5.361 AU
Eccentricity	0.65949
Orbital period	12.413 years
Inclination	19.444°
Longitude of ascending node	181.46°
Argument of periapsis	163.80°
Mean anomaly	359.82°
Last perihelion	1 March 2015
Next perihelion	15 July 2027
TJupiter	2.410
Earth MOID	0.826 AU
Jupiter MOID	0.807 AU
Physical characteristics [4] [5]
Mean diameter	2.38 km (1.48 mi)
Synodic rotation period	6.2 hours
Geometric albedo	0.04 (assumed)
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. ^[2]

Physical characteristics

Initial estimates suggest that the comet completes a single rotation approximately once every 6 days, ^[6] however this was revised to just only 6.2 hours. ^[5]

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. ^[4]

References

1. "Comet Names and Designations". International Comet Quarterly. Retrieved 22 July 2025.
2. "92P/Sanguin – JPL Small-Body Database Lookup". ssd.jpl.nasa.gov. Jet Propulsion Laboratory . Retrieved 9 June 2024.
3. "92P/Sanguin Orbit". Minor Planet Center . Retrieved 24 February 2019.
4. 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.
5. 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 .
6. 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.

External links

• 92P/Sanguin at the JPL Small-Body Database
  • Close approach  · Discovery  · Ephemeris  · Orbit viewer  · Orbit parameters  · Physical parameters

Numbered comets
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