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9531 Jean-Luc (1981 QK)
Classification: Main-belt Asteroid          SPK-ID: 2009531
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1864246517282248 8.3313e-08  
a 2.234605609975131 1.0601e-08 AU
q 1.81802003738558 1.8785e-07 AU
i 5.815729076346218 8.4208e-06 deg
node 359.5854642572119 4.8082e-05 deg
peri 354.2762815057341 4.9764e-05 deg
M 342.7066598946514 1.4874e-05 deg
tp 2457059.110595769513
(2015-Feb-05.61059577)
5.0631e-05 JED
period 1220.112155806073
3.34
8.6824e-06
2.377e-08
d
yr
n .2950548425297544 2.0996e-09 deg/d
Q 2.651191182564682 1.2577e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      961  
   data-arc span      19144 days (52.41 yr)  
   first obs. used      1961-10-17  
   last obs. used      2014-03-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52884  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 19:34:06  

Additional Information
 Earth MOID = .813449 AU 
 T_jup = 3.610 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8 mag n/a MPO266009  

9531 Jean-Luc           Discovered 1981 Aug. 30 by E. Bowell at the Anderson Mesa Station of the Lowell Observatory.
Jean-Luc Margot (b. 1969), a scientist at the Arecibo Observatory, has used radar interferometry and self-built data-acquisition hardware to make the most detailed topographic maps available for the moon's polar regions. He also led the radar investigation of the binary near-earth-object 2000 DP107.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010109/MPCPages.arcLast Updated: 2009-05-11

Alternate Designations
 1981 QK = 1961 UU = 1991 QK 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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