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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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2158513674144894 6.4513e-08  
a 3.156636848473358 2.3758e-08 AU
q 2.47527246829942 2.1141e-07 AU
i .855744236045586 5.5413e-06 deg
node 53.95344320086992 0.00042987 deg
peri 323.0601138206766 0.00042997 deg
M 352.2515734291265 1.3198e-05 deg
tp 2457044.590637741624
(2015-Jan-22.09063774)
7.5289e-05 JED
period 2048.49712929464
5.61
2.3126e-05
6.332e-08
d
yr
n .1757385914052801 1.984e-09 deg/d
Q 3.838001228647297 2.8886e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      860  
   data-arc span      8095 days (22.16 yr)  
   first obs. used      1992-10-19  
   last obs. used      2014-12-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53643  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 02:22:00  

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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