(9687) Uhlenbeck

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Asteroid
(9687) Uhlenbeck
Properties of the orbit ( animation )
Epoch:  4th September 2017 ( JD 2,458,000.5)
Orbit type Main belt asteroid
Major semi-axis 2.8153  AU
eccentricity 0.0083
Perihelion - aphelion 2.7920 AU - 2.8386 AU
Inclination of the orbit plane 6.0534 °
Length of the ascending node 15.6611 °
Argument of the periapsis 75.2711 °
Sidereal period 4.72 a
Mean orbital velocity 17.75 km / s
Physical Properties
Medium diameter 5.380 (± 0.436) km
Albedo 0.222 (± 0.034)
Absolute brightness 13.7 mag
history
Explorer Cornelis Johannes van Houten ,
Ingrid van Houten-Groeneveld ,
Tom Gehrels
Date of discovery September 24, 1960
Another name 4614 PL , 1951 AL 3 , 1991 FE 4
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(9687) Uhlenbeck is an asteroid of the main belt that was discovered on September 24, 1960 by the Dutch astronomer couple Cornelis Johannes van Houten and Ingrid van Houten-Groeneveld . The discovery came about as part of the Palomar-Leiden survey , during which Tom Gehrels examined field plates recorded at the University of Leiden with the 120 cm Oschin Schmidt telescope of the Palomar observatory .

The asteroid was named on July 5, 2001 after the American physicist of Dutch origin George Eugene Uhlenbeck (1900–1988), who, together with Samuel Abraham Goudsmit, postulated the existence of the electron spin in 1925 .

See also

Web links