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173981 (2001 XK139)
Classification: Main-belt Asteroid          SPK-ID: 2173981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04391895936192527 5.7636e-08  
a 3.106517360494425 3.1578e-08 au
q 2.970082350781755 1.7921e-07 au
i 10.23792946091185 5.4642e-06 deg
node 79.96741897289158 3.5919e-05 deg
peri 43.3415604283909 7.1538e-05 deg
M 94.26626545578826 6.2005e-05 deg
tp 2458476.823716817227
(2018-Dec-24.32371682)
0.00034399 TDB
period 1999.903794154417
5.48
3.0494e-05
8.349e-08
d
yr
n .1800086589426229 2.7447e-09 deg/d
Q 3.242952370207095 3.2965e-08 au
  Orbit Determination Parameters
   # obs. used (total)      347  
   data-arc span      6732 days (18.43 yr)  
   first obs. used      2001-11-21  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62527  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 03:34:20  

Additional Information
 Earth MOID = 1.99552 au 
 Jupiter MOID = 1.88278 au 
 T_jup = 3.194 
[ 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 15.1   n/a MPO433119  

173981 (2001 XK139)          Discovered 2001-Dec-14 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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