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JPL Small-Body Database Browser
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13381 (1998 WJ17)
Classification: Outer Main-belt Asteroid          SPK-ID: 2013381
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2136998608053766 4.5185e-08  
a 3.990268078708126 4.3511e-08 au
q 3.137548345712062 1.9128e-07 au
i 4.212233973332786 5.3913e-06 deg
node 233.995316070301 6.5695e-05 deg
peri 82.64194732893012 6.7079e-05 deg
M 284.170087206327 1.6902e-05 deg
tp 2459213.752875889445
(2020-Dec-30.25287589)
0.00014182 TDB
period 2911.39772138338
7.97
4.762e-05
1.304e-07
d
yr
n .1236519481195933 2.0225e-09 deg/d
Q 4.84298781170419 5.281e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1307  
   data-arc span      12092 days (33.11 yr)  
   first obs. used      1986-04-02  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55034  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:09:13  

Additional Information
 Earth MOID = 2.12719 au 
 Jupiter MOID = .605546 au 
 T_jup = 3.010 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.4   n/a MPO439185  
diameter diameter 15.728 km 0.557 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  
geometric albedo albedo 0.103   0.020 urn:nasa:pds:neowise_diameters_albedos::2.0[hildas] (http://adsabs.harvard.edu/abs/2012ApJ...744..197G)  

13381 (1998 WJ17)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20000124/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WJ17 = 1989 SB7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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