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160663 (1999 XK259)
Classification: Main-belt Asteroid          SPK-ID: 2160663
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403551183154939 4.6637e-08  
a 2.612906509030662 1.6037e-08 au
q 2.24617170680834 1.2297e-07 au
i 12.93651861862834 5.1506e-06 deg
node 140.7577945032945 2.1537e-05 deg
peri 285.475401137021 2.6916e-05 deg
M 301.2340530996996 1.7372e-05 deg
tp 2459252.330002968393
(2021-Feb-06.83000297)
7.5179e-05 TDB
period 1542.709780928555
4.22
1.4203e-05
3.889e-08
d
yr
n .233355621679741 2.1484e-09 deg/d
Q 2.979641311252985 1.8288e-08 au
  Orbit Determination Parameters
   # obs. used (total)      532  
   data-arc span      7239 days (19.82 yr)  
   first obs. used      1999-10-09  
   last obs. used      2019-08-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55076  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:23:07  

Additional Information
 Earth MOID = 1.30036 au 
 Jupiter MOID = 2.34652 au 
 T_jup = 3.359 
[ 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 15.3   n/a MPO436810  

160663 (1999 XK259)          Discovered 1999-Dec-09 by LONEOS at Anderson Mesa
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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