9911 Quantz

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9911 Quantz
Orbit of 9911 Quantz (blue), planets (red) and the Sun (black). The outermost planet visible is Jupiter.
Discovery and designation
Discovered by C. J. van Houten, I. van Houten-Groeneveld & T. Gehrels
Discovery date September 29, 1973
MPC designation 9911 Quantz
Named after
Johann Joachim Quantz
4129 T-2, 1986 GR, 1989 CL4
Orbital characteristics
Epoch October 27, 2007
Aphelion 2.6354156 AU
Perihelion 1.9658094 AU
2.3006125 AU
Eccentricity 0.1455278
1274.5699017 d
Inclination 5.20572°
Physical characteristics
Surface temp. min mean max
S-type asteroid[1]

9911 Quantz is an S-type main belt asteroid. It orbits the Sun once every 3.49 years.[2]

Discovered on September 29, 1973 by Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld on photographic plates that had been taken by Tom Gehrels with the Samuel Oschin telescope at the Palomar Observatory, it was given the provisional designation "4129 T-2". It was later renamed "Quantz" after Johan Joachim Quantz, a 17th-century German music teacher and composer.[3]


  1. ^ Gianluca Masi, Sergio Foglia & Richard P. Binzel. "Search for Unusual Spectroscopic Candidates Among 40313 minor planets from the 3rd Release of the Sloan Digital Sky Survey Moving Object Catalog". 
  2. ^ "9911 Quantz (4129 T-2)". JPL Small-Body Database Browser. NASA/JPL. Retrieved 2008-02-04. 
  3. ^ MPC 34356 Minor Planet Center