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13987 (1992 WK9)
Classification: Main-belt Asteroid          SPK-ID: 2013987
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2154256288569582 5.1787e-08  
a 3.156870570064204 2.0031e-08 au
q 2.476799742288098 1.6692e-07 au
i .8557653213336478 4.8458e-06 deg
node 53.96023847886313 0.00038676 deg
peri 323.1536106694397 0.00038685 deg
M 97.64583805042417 1.3023e-05 deg
tp 2457044.807125646982
(2015-Jan-22.30712565)
7.2385e-05 JED
period 2048.724643684059
5.61
1.95e-05
5.339e-08
d
yr
n .1757190753329547 1.6725e-09 deg/d
Q 3.83694139784031 2.4347e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1015  
   data-arc span      8571 days (23.47 yr)  
   first obs. used      1992-10-19  
   last obs. used      2016-04-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58396  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:18:09  

Additional Information
 Earth MOID = 1.47731 au 
 Jupiter MOID = 1.62063 au 
 T_jup = 3.169 
[ 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 13.9 mag n/a MPO358766  

13987 (1992 WK9)          Discovered 1992-Nov-16 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20000320/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1992 WK9 = 1981 UP = 1986 PS 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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