1917 Cuyo

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1917 Cuyo
Discovery [1]
Discovered byC. U. Cesco
A. G. Samuel
Discovery siteEl Leoncito Complex
Discovery date1 January 1968
MPC designation(1917) Cuyo
Named after
Universidad Nacional de Cuyo[2]
1968 AA
NEO · Amor[1]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc63.10 yr (23,049 days)
Aphelion3.2358 AU
Perihelion1.0625 AU
2.1491 AU
3.15 yr (1,151 days)
0° 18m 46.08s / day
Earth MOID0.0722 AU · 28.1 LD
Physical characteristics
Dimensions5.7 km[3]
2.6890 h (0.11204 d)[1]
SMASS = Sl [1]

1917 Cuyo, provisional designation 1968 AA, is an stony asteroid and near-Earth object of the Amor group, approximately 5.7 kilometers in diameter. It was discovered on 1 January 1968, by astronomer Carlos Cesco and A. G. Samuel at El Leoncito Observatory, Argentina.[1]

Orbit and characteristics[edit]

SMASS classification Cuyo is a stony Sl-type.[1]

In 1989, Cuyo was detected with radar from the Arecibo Observatory at a distance of 0.17 AU. The measured radar cross-section was 2.5 km2.[4]

According to the survey carried out by NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, Cuyo measures 5.7 kilometers in diameter and its surface has an albedo of 0.195.[1]


This minor planet is named in honor of the Universidad Nacional de Cuyo, which operated the observatory at El Leoncito in collaboration with Columbia and Yale University. Cuyo is also the name of a region in central-west Argentina.[2]


  1. ^ a b c d e f g h i "JPL Small-Body Database Browser: 1917 Cuyo (1968 AA)" (2017-06-13 last obs.). Jet Propulsion Laboratory. Retrieved 14 June 2017.
  2. ^ a b Schmadel, Lutz D. (2003). "(1917) Cuyo". Dictionary of Minor Planet Names – (1917) Cuyo. Springer Berlin Heidelberg. p. 154. doi:10.1007/978-3-540-29925-7_1918. ISBN 978-3-540-29925-7.
  3. ^ a b Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015). "NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos". The Astrophysical Journal. 814 (2): 13. arXiv:1509.02522. Bibcode:2015ApJ...814..117N. doi:10.1088/0004-637X/814/2/117. Retrieved 14 June 2017.
  4. ^ Ostro, S. J.; et al. (October 1991), "Asteroid radar astrometry", Astronomical Journal, 102: 1490–1502, Bibcode:1991AJ....102.1490O, doi:10.1086/115975

External links[edit]