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43131 (1999 XK72)
Classification: Main-belt Asteroid          SPK-ID: 2043131
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1686210519578966 3.2805e-08  
a 2.616996448293769 9.5667e-09 au
q 2.175715754212394 8.3686e-08 au
i .9882291579478559 3.9556e-06 deg
node 207.5975404327325 0.00021153 deg
peri 143.5845457794474 0.00021188 deg
M 56.88852273940733 1.2224e-05 deg
tp 2458956.142719995083
(2020-Apr-16.64272000)
5.2189e-05 TDB
period 1546.33336507494
4.23
8.4792e-06
2.321e-08
d
yr
n .2328087902200528 1.2766e-09 deg/d
Q 3.058277142375143 1.118e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1146  
   data-arc span      11148 days (30.52 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49758  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 05:24:02  

Additional Information
 Earth MOID = 1.1683 au 
 Jupiter MOID = 2.37294 au 
 T_jup = 3.386 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.03   n/a E2021B10  

43131 (1999 XK72)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20020624/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 XK72 = 1990 RD4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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