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13502 (1987 WD)
Classification: Main-belt Asteroid          SPK-ID: 2013502
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .154973711714765 5.6805e-08  
a 2.399683282834199 1.454e-08 au
q 2.027795457553511 1.3519e-07 au
i 8.956452575896245 6.6871e-06 deg
node 13.55276315407954 3.1769e-05 deg
peri 308.8842164762539 3.8905e-05 deg
M 326.1748821456642 2.6201e-05 deg
tp 2457728.075163508988
(2016-Dec-05.57516351)
9.9278e-05 JED
period 1357.779714501389
3.72
1.234e-05
3.379e-08
d
yr
n .265138738011122 2.4097e-09 deg/d
Q 2.771571108114887 1.6793e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1172  
   data-arc span      10376 days (28.41 yr)  
   first obs. used      1987-11-22  
   last obs. used      2016-04-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48369  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:16:40  

Additional Information
 Earth MOID = 1.02942 au 
 Jupiter MOID = 2.58076 au 
 T_jup = 3.494 
[ 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 13.6 mag n/a MPO319253  

13502 (1987 WD)          Discovered 1987-Nov-17 by Ueda, S., Kaneda, H. at Kushiro
Reference: 20000222/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1987 WD = 1983 TJ = 1997 GZ42 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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