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11898 Dedeyn (1991 GM9)
Classification: Outer Main-belt Asteroid          SPK-ID: 2011898
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1073604776916689 8.3656e-08  
a 3.225994580615526 4.0727e-08 AU
q 2.879650261409908 2.5822e-07 AU
i 2.097936778537627 6.896e-06 deg
node 129.3153255608466 0.00019655 deg
peri 51.01877218957092 0.00019848 deg
M 50.33301091121412 2.7746e-05 deg
tp 2456704.600462117630
(2014-Feb-16.10046212)
0.00016286 JED
period 2116.381112696754
5.79
4.0078e-05
1.097e-07
d
yr
n .1701016881318117 3.2212e-09 deg/d
Q 3.572338899821144 4.5099e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      951  
   data-arc span      23589 days (64.58 yr)  
   first obs. used      1949-11-25  
   last obs. used      2014-06-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50041  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:21:36  

Additional Information
 Earth MOID = 1.88456 AU 
 T_jup = 3.178 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.1 mag n/a PDS3 (MPC 36246)  

11898 Dedeyn           Discovered 1991 Apr. 10 by E. W. Elst at the European Southern Observatory.
Peter Paul De Deyn (b. 1957) is head of the Laboratory of Neurochemistry and Behavior at the Born-Bunge Foundation of the University of Antwerp. During 1985-1986 he specialized in neuropsychiatry at the Ann Arbor Medical Center. He is currently involved with studies of human ethology and animal laboratory sciences.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20010509/MPCPages.arcLast Updated: 2009-05-11

[ show close-approach data ]
Alternate Designations
 1991 GM9 = 1973 AW = 1991 HQ = 1993 QU7 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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