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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544877405453279 5.7053e-08  
a 2.400513683664018 1.5447e-08 AU
q 2.029663748526622 1.3534e-07 AU
i 8.946983361097518 8.3515e-06 deg
node 13.65104905833243 3.5913e-05 deg
peri 308.229378557329 4.586e-05 deg
M 114.8284818129043 2.9203e-05 deg
tp 2456367.186891028783
(2013-Mar-15.68689103)
0.00010962 JED
period 1358.484556852409
3.72
1.3112e-05
3.59e-08
d
yr
n .2650011722136286 2.5579e-09 deg/d
Q 2.771363618801415 1.7833e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      927  
   data-arc span      9579 days (26.23 yr)  
   first obs. used      1987-11-22  
   last obs. used      2014-02-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50288  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 20:40:05  

Additional Information
 Earth MOID = 1.03094 AU 
 T_jup = 3.493 
[ 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 13.5 mag n/a MPO267760  

13502 (1987 WD)          Discovered 1987-Nov-17 by Ueda, S., Kaneda, H. at Kushiro (399)
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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