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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2158513854547113 6.7837e-08  
a 3.156636862254242 2.9801e-08 AU
q 2.475272422159251 2.1789e-07 AU
i .8557487528699896 6.7017e-06 deg
node 53.95341922172045 0.00043351 deg
peri 323.0601404881343 0.00043362 deg
M 352.2515672263052 1.5458e-05 deg
tp 2457044.590673326080
(2015-Jan-22.09067333)
8.8318e-05 JED
period 2048.497142709281
5.61
2.9009e-05
7.942e-08
d
yr
n .175738590254451 2.4887e-09 deg/d
Q 3.838001302349233 3.6234e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      748  
   data-arc span      7960 days (21.79 yr)  
   first obs. used      1992-10-19  
   last obs. used      2014-08-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56346  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Aug-13 14:23:28  

Additional Information
 Earth MOID = 1.47695 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 13.8 mag n/a MPO302152  

13987 (1992 WK9)          Discovered 1992-Nov-16 by Ueda, S., Kaneda, H. at Kushiro (399)
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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