(9911) Quantz Main-belt Asteroid
Discovered on 29 September 1973 by van Houten, C. J., van Houten-Groeneveld, I., Gehrels, T. at Palomar.
Johan Joachim Quantz (1697-1773), the son of a smith, became citypiper of Merseburg, Germany, and later came to the court in Dresden as an oboe player. Thirty years later he took up the flute, studying throughout Europe and introducing new techniques for the flute. In 1741 he became the teacher and musical conductor for the Prussian king Friedrich II the Great. Quantz composed about 500 pieces for flute and published a book about playing the flute and on Baroque music in general.Naming citation (19990402/MPCPages.arc), IAU / Minor Planet Center, via NASA/JPL
Where Quantz is today
Seen from above the solar system on 2026-10-14: Quantz is 2.62 au from the Sun and 1.99 au from Earth. Computed from JPL's orbital elements.
Facts
| Number | 9911 |
| Provisional designation | 4129 T-2 |
| Orbit class | Main-belt Asteroid |
| Diameter | 3.23 km (#14,653 largest of 17,440 named asteroids with a measured size) |
| Albedo | 0.323 |
| Absolute magnitude (H) | 14.66 |
| Orbital period | 3.49 years |
| Semi-major axis | 2.30 au |
| Perihelion – aphelion | 1.96 – 2.64 au |
| Eccentricity | 0.146 |
| Inclination | 5.20° |
| Closest distance between its orbit and Earth's (MOID) | 0.955 au |
Data: NASA/JPL Small-Body Database and the IAU Minor Planet Center.
Also named after someone called Johan
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- (7857) Lagerros
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- (12857) Johandemessie
- (13350) Gmelin
- (24503) Kero
- (25108) Bostrom
- (79410) Wallerius
- (483637) Johanstein
All asteroids named after someone called Johan
Also discovered on 29 September 1973
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- (4549) Burkhardt
- (4721) Atahualpa
- (4752) Myron
- (4876) Strabo
- (4978) Seitz
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- (5197) Rottmann
- (5243) Clasien
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- (5266) Rauch