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243688 (1999 XX171)
Classification: Main-belt Asteroid          SPK-ID: 2243688
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2191302634275702 2.7664e-08  
a 2.545750056952678 1.542e-08 au
q 1.987899176351886 7.0046e-08 au
i 15.31457531089819 6.6297e-06 deg
node 78.10246689258391 1.1212e-05 deg
peri 271.1702131180456 2.1986e-05 deg
M 98.80672366302217 1.8116e-05 deg
tp 2458593.301595111713
(2019-Apr-19.80159511)
7.502e-05 TDB
period 1483.617919158312
4.06
1.348e-05
3.691e-08
d
yr
n .242650075434675 2.2047e-09 deg/d
Q 3.10360093755347 1.8799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      826  
   data-arc span      25252 days (69.14 yr)  
   first obs. used      1950-12-09  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49214  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-25 09:23:53  

Additional Information
 Earth MOID = 1.05151 au 
 Jupiter MOID = 2.51141 au 
 T_jup = 3.360 
[ 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 15.0   n/a MPO503159  

243688 (1999 XX171)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

[ show close-approach data ]
Alternate Designations
 1999 XX171 = 2003 WW125 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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