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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2155867918169437 5.6283e-08  
a 3.155936037064093 2.1194e-08 au
q 2.475557911653966 1.8293e-07 au
i .8557264027689592 5.0377e-06 deg
node 53.9522830001515 0.00040278 deg
peri 323.0784602370309 0.00040287 deg
M 62.56242298565033 1.302e-05 deg
tp 2457044.621480520916
(2015-Jan-22.12148052)
7.2871e-05 JED
period 2047.814980597151
5.61
2.0629e-05
5.648e-08
d
yr
n .1757971317775117 1.7709e-09 deg/d
Q 3.83631416247422 2.5763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      967  
   data-arc span      8462 days (23.17 yr)  
   first obs. used      1992-10-19  
   last obs. used      2015-12-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .57849  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:26:06  

Additional Information
 Earth MOID = 1.47564 au 
 Jupiter MOID = 1.62199 au 
 T_jup = 3.170 
[ 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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