52975 Cyllarus

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Cyllarus (apmag 23) as seen at Keck
Discovery[1] and designation
Discovered by N. Danzl
Discovery site Kitt Peak
Discovery date October 12, 1998
MPC designation 52975
Named after
1998 TF35
Minor planet category Centaur[1][2]
Orbital characteristics[1]
Epoch May 14, 2008
Aphelion 35.99677890184186
Perihelion 16.20557560674432
Eccentricity 0.3791247249555059
133.98 yr
Inclination 12.64863840704166
Physical characteristics
Dimensions ~70 km (assumed)[3]
0.07 (assumed)[3]

52975 Cyllarus /ˈsɪlərəs/, provisionally known as 1998 TF35, is an asteroid discovered on October 12, 1998, by Nichole Danzl at the Kitt Peak Observatory near Sells, Arizona in the United States. It is named for the centaur Cyllarus of Greek mythology.

In November 2009, Mike Brown and his team using the Keck telescope took a spectrum of Cyllarus (apparent magnitude 23), giving it "the record for the faintest spectrum of a Kuiper belt object".

Cyllarus came to perihelion in September 1989.[1]


  1. ^ a b c d e "JPL Small-Body Database Browser: 52975 Cyllarus (1998 TF35)" (2008-09-25 last obs). 
  2. ^ Marc W. Buie. "Orbit Fit and Astrometric record for 52975" (2008-09-25 using 29 observations). SwRI (Space Science Department). Retrieved 2009-11-22. 
  3. ^ a b assumed to have a typical centaur albedo
  4. ^ "AstDys (52975) Cyllarus Ephemerides". Department of Mathematics, University of Pisa, Italy. Retrieved 2009-11-22. 

External links[edit]