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129106 (2004 XD21)
Classification: Main-belt Asteroid          SPK-ID: 2129106
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03321211525617997 5.9166e-08  
a 2.906530610315577 2.8936e-08 au
q 2.809998580690161 1.7718e-07 au
i 3.097933507331621 5.3192e-06 deg
node 93.83602604487663 0.00012725 deg
peri 285.7691575747835 0.00015543 deg
M 95.98311458694148 8.78e-05 deg
tp 2458517.938004051301
(2019-Feb-03.43800405)
0.00044222 TDB
period 1809.925832154302
4.96
2.7028e-05
7.4e-08
d
yr
n .198903178022219 2.9703e-09 deg/d
Q 3.003062639940993 2.9897e-08 au
  Orbit Determination Parameters
   # obs. used (total)      448  
   data-arc span      7353 days (20.13 yr)  
   first obs. used      1999-12-07  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53682  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 07:02:48  

Additional Information
 Earth MOID = 1.81348 au 
 Jupiter MOID = 2.1468 au 
 T_jup = 3.282 
[ 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 15.2   n/a MPO417674  

129106 (2004 XD21)          Discovered 2004-Dec-08 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

Alternate Designations
 2004 XD21 = 1999 XF63 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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